Merge branch 'codex/target-user-profile-step1'

# Conflicts:
#	src/main/java/com/sztzjy/linkCommerce/controller/stu/StudentTrainingAnswerController.java

src/main/java/com/sztzjy/linkCommerce/controller/stu/StudentTrainingAnswerController.java

@@ -408,6 +408,11 @@ public class StudentTrainingAnswerController {
     @Autowired private com.sztzjy.linkCommerce.service.IndustryDemandAnalysisStepTwoService industryDemandAnalysisStepTwoService;
     @Autowired private com.sztzjy.linkCommerce.service.IndustryDemandAnalysisStepThreeService industryDemandAnalysisStepThreeService;
     @Autowired private com.sztzjy.linkCommerce.service.IndustryDemandAnalysisStepFourService industryDemandAnalysisStepFourService;
+    @Autowired private com.sztzjy.linkCommerce.service.TargetUserProfileStepOneService targetUserProfileStepOneService;
+    @Autowired private com.sztzjy.linkCommerce.service.TargetUserProfileStepTwoService targetUserProfileStepTwoService;
+    @Autowired private com.sztzjy.linkCommerce.service.TargetUserProfileStepThreeService targetUserProfileStepThreeService;
+    @Autowired private com.sztzjy.linkCommerce.service.TargetUserProfileStepFourService targetUserProfileStepFourService;
+    @Autowired private com.sztzjy.linkCommerce.service.TargetUserProfileStepFiveService targetUserProfileStepFiveService;
 
     @Autowired
     private SupplierEvaluationStepTwoService supplierEvaluationStepTwoService;
@@ -1215,6 +1220,16 @@ public class StudentTrainingAnswerController {
     public ResultEntity<com.sztzjy.linkCommerce.entity.dto.IndustryDemandAnalysisStepThreeValidationResult> validateIndustryDemandAnalysisStepThree(@RequestBody com.sztzjy.linkCommerce.entity.dto.IndustryDemandAnalysisStepThreeValidationRequest answer, HttpServletRequest request) { try { return new ResultEntity<>(HttpStatus.OK, "校验通过", industryDemandAnalysisStepThreeService.validate(answer, TokenProvider.getJWTUser(request))); } catch (ServiceException e) { return new ResultEntity<>(e.getCode(), e.getMessage()); } }
     @PostMapping("/industry-demand-analysis/step-4/validate") @ApiOperation("行业需求分析第四步校验")
     public ResultEntity<com.sztzjy.linkCommerce.entity.dto.IndustryDemandAnalysisStepFourValidationResult> validateIndustryDemandAnalysisStepFour(@RequestBody com.sztzjy.linkCommerce.entity.dto.IndustryDemandAnalysisStepFourValidationRequest answer, HttpServletRequest request) { try { return new ResultEntity<>(HttpStatus.OK, "校验通过", industryDemandAnalysisStepFourService.validate(answer, TokenProvider.getJWTUser(request))); } catch (ServiceException e) { return new ResultEntity<>(e.getCode(), e.getMessage()); } }
+    @PostMapping("/target-user-profile/step-1/validate") @ApiOperation("目标用户画像第一步校验")
+    public ResultEntity<com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationResult> validateTargetUserProfileStepOne(@RequestBody com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationRequest answer, HttpServletRequest request) { try { return new ResultEntity<>(HttpStatus.OK, "校验通过", targetUserProfileStepOneService.validate(answer, TokenProvider.getJWTUser(request))); } catch (ServiceException e) { return new ResultEntity<>(e.getCode(), e.getMessage()); } }
+    @PostMapping("/target-user-profile/step-2/validate") @ApiOperation("目标用户画像第二步校验")
+    public ResultEntity<com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepTwoValidationResult> validateTargetUserProfileStepTwo(@RequestBody com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepTwoValidationRequest answer, HttpServletRequest request) { try { return new ResultEntity<>(HttpStatus.OK, "校验通过", targetUserProfileStepTwoService.validate(answer, TokenProvider.getJWTUser(request))); } catch (ServiceException e) { return new ResultEntity<>(e.getCode(), e.getMessage()); } }
+    @PostMapping("/target-user-profile/step-3/validate") @ApiOperation("目标用户画像第三步校验")
+    public ResultEntity<com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepThreeValidationResult> validateTargetUserProfileStepThree(@RequestBody com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepThreeValidationRequest answer, HttpServletRequest request) { try { return new ResultEntity<>(HttpStatus.OK, "校验通过", targetUserProfileStepThreeService.validate(answer, TokenProvider.getJWTUser(request))); } catch (ServiceException e) { return new ResultEntity<>(e.getCode(), e.getMessage()); } }
+    @PostMapping("/target-user-profile/step-4/validate") @ApiOperation("目标用户画像第四步校验")
+    public ResultEntity<com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFourValidationResult> validateTargetUserProfileStepFour(@RequestBody com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFourValidationRequest answer, HttpServletRequest request) { try { return new ResultEntity<>(HttpStatus.OK, "校验通过", targetUserProfileStepFourService.validate(answer, TokenProvider.getJWTUser(request))); } catch (ServiceException e) { return new ResultEntity<>(e.getCode(), e.getMessage()); } }
+    @PostMapping("/target-user-profile/step-5/validate") @ApiOperation("目标用户画像第五步校验")
+    public ResultEntity<com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFiveValidationResult> validateTargetUserProfileStepFive(@RequestBody com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFiveValidationRequest answer, HttpServletRequest request) { try { return new ResultEntity<>(HttpStatus.OK, "校验通过", targetUserProfileStepFiveService.validate(answer, TokenProvider.getJWTUser(request))); } catch (ServiceException e) { return new ResultEntity<>(e.getCode(), e.getMessage()); } }
     @DeleteMapping("/{taskKey}")
     @ApiOperation("删除当前学生指定实训任务答案")
     public ResultEntity delete(@PathVariable String taskKey,

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepFiveValidationRequest.java

@@ -0,0 +1,32 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+import java.util.List;
+
+public class TargetUserProfileStepFiveValidationRequest {
+    private List<MarketSegment> segments;
+    private String marketSelection;
+
+    public List<MarketSegment> getSegments() { return segments; }
+    public void setSegments(List<MarketSegment> segments) { this.segments = segments; }
+    public String getMarketSelection() { return marketSelection; }
+    public void setMarketSelection(String marketSelection) { this.marketSelection = marketSelection; }
+
+    public static class MarketSegment {
+        private String market;
+        private String attractiveness;
+        private String painPoints;
+        private String behaviorCharacteristics;
+        private String productOpportunity;
+
+        public String getMarket() { return market; }
+        public void setMarket(String market) { this.market = market; }
+        public String getAttractiveness() { return attractiveness; }
+        public void setAttractiveness(String attractiveness) { this.attractiveness = attractiveness; }
+        public String getPainPoints() { return painPoints; }
+        public void setPainPoints(String painPoints) { this.painPoints = painPoints; }
+        public String getBehaviorCharacteristics() { return behaviorCharacteristics; }
+        public void setBehaviorCharacteristics(String behaviorCharacteristics) { this.behaviorCharacteristics = behaviorCharacteristics; }
+        public String getProductOpportunity() { return productOpportunity; }
+        public void setProductOpportunity(String productOpportunity) { this.productOpportunity = productOpportunity; }
+    }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepFiveValidationResult.java

@@ -0,0 +1,11 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+public class TargetUserProfileStepFiveValidationResult {
+    private boolean valid;
+    private String message;
+
+    public boolean isValid() { return valid; }
+    public void setValid(boolean valid) { this.valid = valid; }
+    public String getMessage() { return message; }
+    public void setMessage(String message) { this.message = message; }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepFourValidationRequest.java

@@ -0,0 +1,35 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+import java.util.List;
+
+public class TargetUserProfileStepFourValidationRequest {
+    private List<UserPortrait> records;
+
+    public List<UserPortrait> getRecords() { return records; }
+    public void setRecords(List<UserPortrait> records) { this.records = records; }
+
+    public static class UserPortrait {
+        private String code;
+        private String user;
+        private String basicAttributes;
+        private String tags;
+        private String behavior;
+        private String painPoints;
+        private String psychology;
+
+        public String getCode() { return code; }
+        public void setCode(String code) { this.code = code; }
+        public String getUser() { return user; }
+        public void setUser(String user) { this.user = user; }
+        public String getBasicAttributes() { return basicAttributes; }
+        public void setBasicAttributes(String basicAttributes) { this.basicAttributes = basicAttributes; }
+        public String getTags() { return tags; }
+        public void setTags(String tags) { this.tags = tags; }
+        public String getBehavior() { return behavior; }
+        public void setBehavior(String behavior) { this.behavior = behavior; }
+        public String getPainPoints() { return painPoints; }
+        public void setPainPoints(String painPoints) { this.painPoints = painPoints; }
+        public String getPsychology() { return psychology; }
+        public void setPsychology(String psychology) { this.psychology = psychology; }
+    }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepFourValidationResult.java

@@ -0,0 +1,11 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+public class TargetUserProfileStepFourValidationResult {
+    private boolean valid;
+    private String message;
+
+    public boolean isValid() { return valid; }
+    public void setValid(boolean valid) { this.valid = valid; }
+    public String getMessage() { return message; }
+    public void setMessage(String message) { this.message = message; }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepOneValidationRequest.java

@@ -0,0 +1,17 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+public class TargetUserProfileStepOneValidationRequest {
+    private String excelUrl;
+    private String excelName;
+    private Integer previewRowCount;
+    private Integer previewColumnCount;
+
+    public String getExcelUrl() { return excelUrl; }
+    public void setExcelUrl(String excelUrl) { this.excelUrl = excelUrl; }
+    public String getExcelName() { return excelName; }
+    public void setExcelName(String excelName) { this.excelName = excelName; }
+    public Integer getPreviewRowCount() { return previewRowCount; }
+    public void setPreviewRowCount(Integer previewRowCount) { this.previewRowCount = previewRowCount; }
+    public Integer getPreviewColumnCount() { return previewColumnCount; }
+    public void setPreviewColumnCount(Integer previewColumnCount) { this.previewColumnCount = previewColumnCount; }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepOneValidationResult.java

@@ -0,0 +1,11 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+public class TargetUserProfileStepOneValidationResult {
+    private boolean valid;
+    private String message;
+
+    public boolean isValid() { return valid; }
+    public void setValid(boolean valid) { this.valid = valid; }
+    public String getMessage() { return message; }
+    public void setMessage(String message) { this.message = message; }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepThreeValidationRequest.java

@@ -0,0 +1,20 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+import java.util.List;
+
+public class TargetUserProfileStepThreeValidationRequest {
+    private List<Insight> insights;
+
+    public List<Insight> getInsights() { return insights; }
+    public void setInsights(List<Insight> insights) { this.insights = insights; }
+
+    public static class Insight {
+        private String dimension;
+        private String analysis;
+
+        public String getDimension() { return dimension; }
+        public void setDimension(String dimension) { this.dimension = dimension; }
+        public String getAnalysis() { return analysis; }
+        public void setAnalysis(String analysis) { this.analysis = analysis; }
+    }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepThreeValidationResult.java

@@ -0,0 +1,11 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+public class TargetUserProfileStepThreeValidationResult {
+    private boolean valid;
+    private String message;
+
+    public boolean isValid() { return valid; }
+    public void setValid(boolean valid) { this.valid = valid; }
+    public String getMessage() { return message; }
+    public void setMessage(String message) { this.message = message; }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepTwoValidationRequest.java

@@ -0,0 +1,23 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+import java.util.List;
+
+public class TargetUserProfileStepTwoValidationRequest {
+    private List<ChartUpload> charts;
+
+    public List<ChartUpload> getCharts() { return charts; }
+    public void setCharts(List<ChartUpload> charts) { this.charts = charts; }
+
+    public static class ChartUpload {
+        private String type;
+        private String url;
+        private String name;
+
+        public String getType() { return type; }
+        public void setType(String type) { this.type = type; }
+        public String getUrl() { return url; }
+        public void setUrl(String url) { this.url = url; }
+        public String getName() { return name; }
+        public void setName(String name) { this.name = name; }
+    }
+}

src/main/java/com/sztzjy/linkCommerce/entity/dto/TargetUserProfileStepTwoValidationResult.java

@@ -0,0 +1,11 @@
+package com.sztzjy.linkCommerce.entity.dto;
+
+public class TargetUserProfileStepTwoValidationResult {
+    private boolean valid;
+    private String message;
+
+    public boolean isValid() { return valid; }
+    public void setValid(boolean valid) { this.valid = valid; }
+    public String getMessage() { return message; }
+    public void setMessage(String message) { this.message = message; }
+}

src/main/java/com/sztzjy/linkCommerce/service/TargetUserProfileStepFiveService.java

@@ -0,0 +1,9 @@
+package com.sztzjy.linkCommerce.service;
+
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFiveValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFiveValidationResult;
+
+public interface TargetUserProfileStepFiveService {
+    TargetUserProfileStepFiveValidationResult validate(TargetUserProfileStepFiveValidationRequest request, JwtUser user);
+}

src/main/java/com/sztzjy/linkCommerce/service/TargetUserProfileStepFourService.java

@@ -0,0 +1,9 @@
+package com.sztzjy.linkCommerce.service;
+
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFourValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFourValidationResult;
+
+public interface TargetUserProfileStepFourService {
+    TargetUserProfileStepFourValidationResult validate(TargetUserProfileStepFourValidationRequest request, JwtUser user);
+}

src/main/java/com/sztzjy/linkCommerce/service/TargetUserProfileStepOneService.java

@@ -0,0 +1,9 @@
+package com.sztzjy.linkCommerce.service;
+
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationResult;
+
+public interface TargetUserProfileStepOneService {
+    TargetUserProfileStepOneValidationResult validate(TargetUserProfileStepOneValidationRequest request, JwtUser user);
+}

src/main/java/com/sztzjy/linkCommerce/service/TargetUserProfileStepThreeService.java

@@ -0,0 +1,9 @@
+package com.sztzjy.linkCommerce.service;
+
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepThreeValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepThreeValidationResult;
+
+public interface TargetUserProfileStepThreeService {
+    TargetUserProfileStepThreeValidationResult validate(TargetUserProfileStepThreeValidationRequest request, JwtUser user);
+}

src/main/java/com/sztzjy/linkCommerce/service/TargetUserProfileStepTwoService.java

@@ -0,0 +1,9 @@
+package com.sztzjy.linkCommerce.service;
+
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepTwoValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepTwoValidationResult;
+
+public interface TargetUserProfileStepTwoService {
+    TargetUserProfileStepTwoValidationResult validate(TargetUserProfileStepTwoValidationRequest request, JwtUser user);
+}

src/main/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepFiveServiceImpl.java

@@ -0,0 +1,60 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFiveValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFiveValidationResult;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import com.sztzjy.linkCommerce.service.TargetUserProfileStepFiveService;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+
+import java.util.Arrays;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+@Service
+public class TargetUserProfileStepFiveServiceImpl implements TargetUserProfileStepFiveService {
+    private static final String TASK_KEY = "target-user-profile";
+    private static final int MAX_SEGMENTS = 6;
+    private static final Set<String> ATTRACTIVENESS_OPTIONS = new LinkedHashSet<>(Arrays.asList("高", "中", "低"));
+
+    @Autowired
+    private StudentTrainingAnswerService studentTrainingAnswerService;
+
+    @Override
+    public TargetUserProfileStepFiveValidationResult validate(TargetUserProfileStepFiveValidationRequest request, JwtUser user) {
+        if (user == null || StringUtils.isBlank(user.getUserId())) {
+            throw new ServiceException(HttpStatus.UNAUTHORIZED, "请先登录后再校验");
+        }
+        if (user.getRoleId() != 4) {
+            throw new ServiceException(HttpStatus.FORBIDDEN, "仅学生可进行实训校验");
+        }
+        StudentTrainingAnswer savedAnswer = studentTrainingAnswerService.get(TASK_KEY, null, user);
+        String savedContent = savedAnswer == null ? "" : savedAnswer.getStep1Answer();
+        if (StringUtils.isBlank(savedContent) || !StringUtils.contains(savedContent, "keyUserRecords")
+                || !StringUtils.contains(savedContent, "U01") || !StringUtils.contains(savedContent, "U02") || !StringUtils.contains(savedContent, "U03")) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请先完成并保存第 4 步重点用户画像");
+        }
+        if (request == null || request.getSegments() == null || request.getSegments().isEmpty() || request.getSegments().size() > MAX_SEGMENTS) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请完成细分市场分析表，最多可填写 6 行");
+        }
+        for (TargetUserProfileStepFiveValidationRequest.MarketSegment segment : request.getSegments()) {
+            if (segment == null || StringUtils.isBlank(segment.getMarket()) || !ATTRACTIVENESS_OPTIONS.contains(StringUtils.trim(segment.getAttractiveness()))
+                    || StringUtils.isBlank(segment.getPainPoints()) || StringUtils.isBlank(segment.getBehaviorCharacteristics())
+                    || StringUtils.isBlank(segment.getProductOpportunity())) {
+                throw new ServiceException(HttpStatus.BAD_REQUEST, "请完整填写每个细分市场的吸引力、需求痛点、行为特征和产品机会");
+            }
+        }
+        if (StringUtils.isBlank(request.getMarketSelection())) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请完成市场选择结论");
+        }
+        TargetUserProfileStepFiveValidationResult result = new TargetUserProfileStepFiveValidationResult();
+        result.setValid(true);
+        result.setMessage("校验通过");
+        return result;
+    }
+}

src/main/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepFourServiceImpl.java

@@ -0,0 +1,65 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFourValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFourValidationResult;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import com.sztzjy.linkCommerce.service.TargetUserProfileStepFourService;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+
+import java.util.Arrays;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+@Service
+public class TargetUserProfileStepFourServiceImpl implements TargetUserProfileStepFourService {
+    private static final String TASK_KEY = "target-user-profile";
+    private static final Set<String> REQUIRED_CODES = new LinkedHashSet<>(Arrays.asList("U01", "U02", "U03"));
+    private static final Set<String> REQUIRED_INSIGHT_DIMENSIONS = new LinkedHashSet<>(Arrays.asList("高价值用户占比", "用户活跃度", "消费能力", "用户忠诚度", "重点客户群特征"));
+
+    @Autowired
+    private StudentTrainingAnswerService studentTrainingAnswerService;
+
+    @Override
+    public TargetUserProfileStepFourValidationResult validate(TargetUserProfileStepFourValidationRequest request, JwtUser user) {
+        if (user == null || StringUtils.isBlank(user.getUserId())) {
+            throw new ServiceException(HttpStatus.UNAUTHORIZED, "请先登录后再校验");
+        }
+        if (user.getRoleId() != 4) {
+            throw new ServiceException(HttpStatus.FORBIDDEN, "仅学生可进行实训校验");
+        }
+        StudentTrainingAnswer savedAnswer = studentTrainingAnswerService.get(TASK_KEY, null, user);
+        if (savedAnswer == null || StringUtils.isBlank(savedAnswer.getStep1Answer())) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请先完成并保存第 3 步 RFM 用户群体特点分析");
+        }
+        String savedContent = savedAnswer.getStep1Answer();
+        if (REQUIRED_INSIGHT_DIMENSIONS.stream().anyMatch(dimension -> !StringUtils.contains(savedContent, dimension))) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请先完整保存第 3 步 RFM 用户群体特点分析");
+        }
+        if (request == null || request.getRecords() == null || request.getRecords().size() != REQUIRED_CODES.size()) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请完成三位重点用户的完整画像");
+        }
+        Set<String> codes = new LinkedHashSet<>();
+        for (TargetUserProfileStepFourValidationRequest.UserPortrait record : request.getRecords()) {
+            String code = record == null ? "" : StringUtils.trimToEmpty(record.getCode());
+            if (!REQUIRED_CODES.contains(code) || !codes.add(code) || record == null
+                    || StringUtils.isBlank(record.getUser()) || StringUtils.isBlank(record.getBasicAttributes())
+                    || StringUtils.isBlank(record.getTags()) || StringUtils.isBlank(record.getBehavior())
+                    || StringUtils.isBlank(record.getPainPoints()) || StringUtils.isBlank(record.getPsychology())) {
+                throw new ServiceException(HttpStatus.BAD_REQUEST, "请完成三位重点用户的完整画像");
+            }
+        }
+        if (!codes.equals(REQUIRED_CODES)) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "重点用户访谈记录不完整");
+        }
+        TargetUserProfileStepFourValidationResult result = new TargetUserProfileStepFourValidationResult();
+        result.setValid(true);
+        result.setMessage("校验通过");
+        return result;
+    }
+}

src/main/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepOneServiceImpl.java

@@ -0,0 +1,40 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationResult;
+import com.sztzjy.linkCommerce.service.TargetUserProfileStepOneService;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+
+import java.util.Locale;
+
+@Service
+public class TargetUserProfileStepOneServiceImpl implements TargetUserProfileStepOneService {
+    @Override
+    public TargetUserProfileStepOneValidationResult validate(TargetUserProfileStepOneValidationRequest request, JwtUser user) {
+        if (user == null || StringUtils.isBlank(user.getUserId())) {
+            throw new ServiceException(HttpStatus.UNAUTHORIZED, "请先登录后再校验");
+        }
+        if (user.getRoleId() != 4) {
+            throw new ServiceException(HttpStatus.FORBIDDEN, "仅学生可进行实训校验");
+        }
+        if (request == null || StringUtils.isBlank(request.getExcelUrl()) || StringUtils.isBlank(request.getExcelName())) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请上传 RFM 用户分层分析结果 Excel 数据");
+        }
+        String excelName = request.getExcelName().trim().toLowerCase(Locale.ROOT);
+        if (!excelName.endsWith(".xls") && !excelName.endsWith(".xlsx")) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "仅支持 .xls、.xlsx 格式的 Excel 文件");
+        }
+        if (request.getPreviewRowCount() == null || request.getPreviewRowCount() < 1
+                || request.getPreviewColumnCount() == null || request.getPreviewColumnCount() < 1) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "Excel 文件需要包含可预览的表头和数据");
+        }
+        TargetUserProfileStepOneValidationResult result = new TargetUserProfileStepOneValidationResult();
+        result.setValid(true);
+        result.setMessage("校验通过");
+        return result;
+    }
+}

src/main/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepThreeServiceImpl.java

@@ -0,0 +1,63 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepThreeValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepThreeValidationResult;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import com.sztzjy.linkCommerce.service.TargetUserProfileStepThreeService;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+
+import java.util.Arrays;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+@Service
+public class TargetUserProfileStepThreeServiceImpl implements TargetUserProfileStepThreeService {
+    private static final String TASK_KEY = "target-user-profile";
+    private static final Set<String> REQUIRED_DIMENSIONS = new LinkedHashSet<>(Arrays.asList("高价值用户占比", "用户活跃度", "消费能力", "用户忠诚度", "重点客户群特征"));
+    private static final Set<String> REQUIRED_CHART_TYPES = new LinkedHashSet<>(Arrays.asList("segment-share", "average-spend", "score-heatmap"));
+
+    @Autowired
+    private StudentTrainingAnswerService studentTrainingAnswerService;
+
+    @Override
+    public TargetUserProfileStepThreeValidationResult validate(TargetUserProfileStepThreeValidationRequest request, JwtUser user) {
+        if (user == null || StringUtils.isBlank(user.getUserId())) {
+            throw new ServiceException(HttpStatus.UNAUTHORIZED, "请先登录后再校验");
+        }
+        if (user.getRoleId() != 4) {
+            throw new ServiceException(HttpStatus.FORBIDDEN, "仅学生可进行实训校验");
+        }
+        StudentTrainingAnswer savedAnswer = studentTrainingAnswerService.get(TASK_KEY, null, user);
+        if (savedAnswer == null || StringUtils.isBlank(savedAnswer.getStep1Answer())) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请先完成并保存第 2 步 RFM 图表");
+        }
+        String savedContent = savedAnswer.getStep1Answer();
+        if (REQUIRED_CHART_TYPES.stream().anyMatch(type -> !StringUtils.contains(savedContent, type))) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请先完整保存第 2 步的三类 RFM 图表");
+        }
+        if (request == null || request.getInsights() == null || request.getInsights().size() != REQUIRED_DIMENSIONS.size()) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请完成五个 RFM 用户群体特点分析维度");
+        }
+        Set<String> dimensions = new LinkedHashSet<>();
+        for (TargetUserProfileStepThreeValidationRequest.Insight insight : request.getInsights()) {
+            String dimension = insight == null ? "" : StringUtils.trimToEmpty(insight.getDimension());
+            String analysis = insight == null ? "" : StringUtils.trimToEmpty(insight.getAnalysis());
+            if (!REQUIRED_DIMENSIONS.contains(dimension) || !dimensions.add(dimension) || StringUtils.isBlank(analysis)) {
+                throw new ServiceException(HttpStatus.BAD_REQUEST, "请完成五个 RFM 用户群体特点分析维度");
+            }
+        }
+        if (!dimensions.equals(REQUIRED_DIMENSIONS)) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "提交的分析维度不完整");
+        }
+        TargetUserProfileStepThreeValidationResult result = new TargetUserProfileStepThreeValidationResult();
+        result.setValid(true);
+        result.setMessage("校验通过");
+        return result;
+    }
+}

src/main/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepTwoServiceImpl.java

@@ -0,0 +1,60 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepTwoValidationRequest;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepTwoValidationResult;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import com.sztzjy.linkCommerce.service.TargetUserProfileStepTwoService;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+
+import java.util.Arrays;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+@Service
+public class TargetUserProfileStepTwoServiceImpl implements TargetUserProfileStepTwoService {
+    private static final String TASK_KEY = "target-user-profile";
+    private static final Set<String> REQUIRED_CHART_TYPES = new LinkedHashSet<>(Arrays.asList("segment-share", "average-spend", "score-heatmap"));
+
+    @Autowired
+    private StudentTrainingAnswerService studentTrainingAnswerService;
+
+    @Override
+    public TargetUserProfileStepTwoValidationResult validate(TargetUserProfileStepTwoValidationRequest request, JwtUser user) {
+        if (user == null || StringUtils.isBlank(user.getUserId())) {
+            throw new ServiceException(HttpStatus.UNAUTHORIZED, "请先登录后再校验");
+        }
+        if (user.getRoleId() != 4) {
+            throw new ServiceException(HttpStatus.FORBIDDEN, "仅学生可进行实训校验");
+        }
+        StudentTrainingAnswer savedAnswer = studentTrainingAnswerService.get(TASK_KEY, null, user);
+        if (savedAnswer == null || StringUtils.isBlank(savedAnswer.getStep1Answer())) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请先完成并保存第 1 步 RFM 用户分层分析");
+        }
+        if (request == null || request.getCharts() == null || request.getCharts().size() != REQUIRED_CHART_TYPES.size()) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "请上传三类 RFM 可视化图表");
+        }
+        Set<String> chartTypes = new LinkedHashSet<>();
+        for (TargetUserProfileStepTwoValidationRequest.ChartUpload chart : request.getCharts()) {
+            String type = chart == null ? "" : StringUtils.trimToEmpty(chart.getType());
+            String url = chart == null ? "" : StringUtils.trimToEmpty(chart.getUrl());
+            String name = chart == null ? "" : StringUtils.trimToEmpty(chart.getName()).toLowerCase();
+            if (!REQUIRED_CHART_TYPES.contains(type) || !chartTypes.add(type) || StringUtils.isBlank(url)
+                    || !(name.endsWith(".png") || name.endsWith(".jpg") || name.endsWith(".jpeg") || name.endsWith(".webp"))) {
+                throw new ServiceException(HttpStatus.BAD_REQUEST, "请完整上传客户分层占比饼图、平均消费对比柱状图和 RFM 分数分布热力图");
+            }
+        }
+        if (!chartTypes.equals(REQUIRED_CHART_TYPES)) {
+            throw new ServiceException(HttpStatus.BAD_REQUEST, "提交的 RFM 图表类型不完整");
+        }
+        TargetUserProfileStepTwoValidationResult result = new TargetUserProfileStepTwoValidationResult();
+        result.setValid(true);
+        result.setMessage("校验通过");
+        return result;
+    }
+}

src/test/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepFiveServiceImplTest.java

@@ -0,0 +1,72 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFiveValidationRequest;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import org.junit.jupiter.api.Test;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class TargetUserProfileStepFiveServiceImplTest {
+    @Test
+    void validatesCompleteMarketSegmentsAfterPortraitsAreSaved() {
+        assertTrue(serviceWithPortraitHistory().validate(request(), student()).isValid());
+    }
+
+    @Test
+    void rejectsIncompleteSegmentAndMissingPortraitHistory() {
+        TargetUserProfileStepFiveValidationRequest incomplete = request();
+        incomplete.getSegments().get(0).setAttractiveness("");
+        assertThrows(ServiceException.class, () -> serviceWithPortraitHistory().validate(incomplete, student()));
+
+        TargetUserProfileStepFiveServiceImpl service = new TargetUserProfileStepFiveServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(new StudentTrainingAnswer());
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        assertThrows(ServiceException.class, () -> service.validate(request(), student()));
+    }
+
+    private TargetUserProfileStepFiveServiceImpl serviceWithPortraitHistory() {
+        TargetUserProfileStepFiveServiceImpl service = new TargetUserProfileStepFiveServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        StudentTrainingAnswer answer = new StudentTrainingAnswer();
+        answer.setStep1Answer("{\"keyUserRecords\":[{\"code\":\"U01\"},{\"code\":\"U02\"},{\"code\":\"U03\"}]}");
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(answer);
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        return service;
+    }
+
+    private TargetUserProfileStepFiveValidationRequest request() {
+        TargetUserProfileStepFiveValidationRequest request = new TargetUserProfileStepFiveValidationRequest();
+        request.setSegments(Arrays.asList(segment("职场白领"), segment("精致妈妈")));
+        request.setMarketSelection("优先服务有明确助眠需求的职场白领，并开发便捷的智能助眠产品。");
+        return request;
+    }
+
+    private TargetUserProfileStepFiveValidationRequest.MarketSegment segment(String market) {
+        TargetUserProfileStepFiveValidationRequest.MarketSegment segment = new TargetUserProfileStepFiveValidationRequest.MarketSegment();
+        segment.setMarket(market);
+        segment.setAttractiveness("高");
+        segment.setPainPoints("睡眠质量差，需要便捷的改善方案");
+        segment.setBehaviorCharacteristics("愿意尝试智能设备，并会关注健康数据");
+        segment.setProductOpportunity("提供智能灯光、睡眠内容和数据报告的一体化产品");
+        return segment;
+    }
+
+    private JwtUser student() {
+        JwtUser user = new JwtUser();
+        user.setUserId("stu-1");
+        user.setRoleId(4);
+        return user;
+    }
+}

src/test/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepFourServiceImplTest.java

@@ -0,0 +1,77 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepFourValidationRequest;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import org.junit.jupiter.api.Test;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class TargetUserProfileStepFourServiceImplTest {
+    @Test
+    void validatesThreeCompletePortraitsAfterInsightsAreSaved() {
+        assertTrue(serviceWithInsights().validate(request(), student()).isValid());
+    }
+
+    @Test
+    void rejectsIncompletePortraitAndMissingInsightHistory() {
+        TargetUserProfileStepFourValidationRequest incomplete = request();
+        incomplete.setRecords(new ArrayList<>(incomplete.getRecords()));
+        incomplete.getRecords().get(1).setPsychology("");
+        assertThrows(ServiceException.class, () -> serviceWithInsights().validate(incomplete, student()));
+
+        TargetUserProfileStepFourServiceImpl service = new TargetUserProfileStepFourServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        StudentTrainingAnswer answer = new StudentTrainingAnswer();
+        answer.setStep1Answer("{\"rfmInsights\":[{\"dimension\":\"用户活跃度\"}]} ");
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(answer);
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        assertThrows(ServiceException.class, () -> service.validate(request(), student()));
+    }
+
+    private TargetUserProfileStepFourServiceImpl serviceWithInsights() {
+        TargetUserProfileStepFourServiceImpl service = new TargetUserProfileStepFourServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        StudentTrainingAnswer answer = new StudentTrainingAnswer();
+        answer.setStep1Answer("{\"rfmInsights\":[\"高价值用户占比\",\"用户活跃度\",\"消费能力\",\"用户忠诚度\",\"重点客户群特征\"]}");
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(answer);
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        return service;
+    }
+
+    private TargetUserProfileStepFourValidationRequest request() {
+        TargetUserProfileStepFourValidationRequest request = new TargetUserProfileStepFourValidationRequest();
+        request.setRecords(Arrays.asList(record("U01"), record("U02"), record("U03")));
+        return request;
+    }
+
+    private TargetUserProfileStepFourValidationRequest.UserPortrait record(String code) {
+        TargetUserProfileStepFourValidationRequest.UserPortrait record = new TargetUserProfileStepFourValidationRequest.UserPortrait();
+        record.setCode(code);
+        record.setUser(code + " 用户");
+        record.setBasicAttributes("基础属性");
+        record.setTags("用户标签");
+        record.setBehavior("行为特征");
+        record.setPainPoints("需求痛点");
+        record.setPsychology("消费心理");
+        return record;
+    }
+
+    private JwtUser student() {
+        JwtUser user = new JwtUser();
+        user.setUserId("stu-1");
+        user.setRoleId(4);
+        return user;
+    }
+}

src/test/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepOneServiceImplTest.java

@@ -0,0 +1,39 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepOneValidationRequest;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class TargetUserProfileStepOneServiceImplTest {
+    @Test
+    void validatesStudentRfmExcelWithPreview() {
+        assertTrue(new TargetUserProfileStepOneServiceImpl().validate(request("rfm.xlsx", 20, 6), student()).isValid());
+    }
+
+    @Test
+    void rejectsNonExcelFileAndUnpreviewableWorkbook() {
+        TargetUserProfileStepOneServiceImpl service = new TargetUserProfileStepOneServiceImpl();
+        assertThrows(ServiceException.class, () -> service.validate(request("rfm.pdf", 2, 6), student()));
+        assertThrows(ServiceException.class, () -> service.validate(request("rfm.xlsx", 0, 0), student()));
+    }
+
+    private TargetUserProfileStepOneValidationRequest request(String excelName, int rows, int columns) {
+        TargetUserProfileStepOneValidationRequest request = new TargetUserProfileStepOneValidationRequest();
+        request.setExcelName(excelName);
+        request.setExcelUrl("/profile/" + excelName);
+        request.setPreviewRowCount(rows);
+        request.setPreviewColumnCount(columns);
+        return request;
+    }
+
+    private JwtUser student() {
+        JwtUser user = new JwtUser();
+        user.setUserId("stu-1");
+        user.setRoleId(4);
+        return user;
+    }
+}

src/test/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepThreeServiceImplTest.java

@@ -0,0 +1,74 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepThreeValidationRequest;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import org.junit.jupiter.api.Test;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class TargetUserProfileStepThreeServiceImplTest {
+    @Test
+    void validatesAllInsightsAfterChartsAreSaved() {
+        assertTrue(serviceWithCharts().validate(request(), student()).isValid());
+    }
+
+    @Test
+    void rejectsMissingInsightAndMissingChartHistory() {
+        TargetUserProfileStepThreeValidationRequest incomplete = request();
+        incomplete.setInsights(new ArrayList<>(incomplete.getInsights()));
+        incomplete.getInsights().remove(4);
+        assertThrows(ServiceException.class, () -> serviceWithCharts().validate(incomplete, student()));
+
+        TargetUserProfileStepThreeServiceImpl service = new TargetUserProfileStepThreeServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        StudentTrainingAnswer answer = new StudentTrainingAnswer();
+        answer.setStep1Answer("{\"rfmCharts\":{\"segment-share\":{}}}");
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(answer);
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        assertThrows(ServiceException.class, () -> service.validate(request(), student()));
+    }
+
+    private TargetUserProfileStepThreeServiceImpl serviceWithCharts() {
+        TargetUserProfileStepThreeServiceImpl service = new TargetUserProfileStepThreeServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        StudentTrainingAnswer answer = new StudentTrainingAnswer();
+        answer.setStep1Answer("{\"rfmCharts\":{\"segment-share\":{},\"average-spend\":{},\"score-heatmap\":{}}}");
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(answer);
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        return service;
+    }
+
+    private TargetUserProfileStepThreeValidationRequest request() {
+        TargetUserProfileStepThreeValidationRequest request = new TargetUserProfileStepThreeValidationRequest();
+        request.setInsights(Arrays.asList(
+                insight("高价值用户占比"), insight("用户活跃度"), insight("消费能力"), insight("用户忠诚度"), insight("重点客户群特征")
+        ));
+        return request;
+    }
+
+    private TargetUserProfileStepThreeValidationRequest.Insight insight(String dimension) {
+        TargetUserProfileStepThreeValidationRequest.Insight insight = new TargetUserProfileStepThreeValidationRequest.Insight();
+        insight.setDimension(dimension);
+        insight.setAnalysis("已完成" + dimension + "分析");
+        return insight;
+    }
+
+    private JwtUser student() {
+        JwtUser user = new JwtUser();
+        user.setUserId("stu-1");
+        user.setRoleId(4);
+        return user;
+    }
+}

src/test/java/com/sztzjy/linkCommerce/service/impl/TargetUserProfileStepTwoServiceImplTest.java

@@ -0,0 +1,75 @@
+package com.sztzjy.linkCommerce.service.impl;
+
+import com.sztzjy.linkCommerce.config.exception.handler.ServiceException;
+import com.sztzjy.linkCommerce.config.security.JwtUser;
+import com.sztzjy.linkCommerce.entity.StudentTrainingAnswer;
+import com.sztzjy.linkCommerce.entity.dto.TargetUserProfileStepTwoValidationRequest;
+import com.sztzjy.linkCommerce.service.StudentTrainingAnswerService;
+import org.junit.jupiter.api.Test;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import java.util.Arrays;
+import java.util.ArrayList;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class TargetUserProfileStepTwoServiceImplTest {
+    @Test
+    void validatesAllThreeRfmChartsAfterStepOneIsSaved() {
+        assertTrue(serviceWithStepOne().validate(request(), student()).isValid());
+    }
+
+    @Test
+    void rejectsIncompleteChartsAndMissingStepOne() {
+        TargetUserProfileStepTwoValidationRequest incomplete = request();
+        incomplete.setCharts(new ArrayList<>(incomplete.getCharts()));
+        incomplete.getCharts().remove(2);
+        assertThrows(ServiceException.class, () -> serviceWithStepOne().validate(incomplete, student()));
+
+        TargetUserProfileStepTwoServiceImpl service = new TargetUserProfileStepTwoServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(null);
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        assertThrows(ServiceException.class, () -> service.validate(request(), student()));
+    }
+
+    private TargetUserProfileStepTwoServiceImpl serviceWithStepOne() {
+        TargetUserProfileStepTwoServiceImpl service = new TargetUserProfileStepTwoServiceImpl();
+        StudentTrainingAnswerService answers = mock(StudentTrainingAnswerService.class);
+        StudentTrainingAnswer answer = new StudentTrainingAnswer();
+        answer.setStep1Answer("{\"profileFileUrl\":\"/rfm.xlsx\"}");
+        when(answers.get(anyString(), any(), any(JwtUser.class))).thenReturn(answer);
+        ReflectionTestUtils.setField(service, "studentTrainingAnswerService", answers);
+        return service;
+    }
+
+    private TargetUserProfileStepTwoValidationRequest request() {
+        TargetUserProfileStepTwoValidationRequest request = new TargetUserProfileStepTwoValidationRequest();
+        request.setCharts(Arrays.asList(
+                chart("segment-share", "share.png"),
+                chart("average-spend", "spend.jpg"),
+                chart("score-heatmap", "heatmap.webp")
+        ));
+        return request;
+    }
+
+    private TargetUserProfileStepTwoValidationRequest.ChartUpload chart(String type, String name) {
+        TargetUserProfileStepTwoValidationRequest.ChartUpload chart = new TargetUserProfileStepTwoValidationRequest.ChartUpload();
+        chart.setType(type);
+        chart.setName(name);
+        chart.setUrl("/profile/" + name);
+        return chart;
+    }
+
+    private JwtUser student() {
+        JwtUser user = new JwtUser();
+        user.setUserId("stu-1");
+        user.setRoleId(4);
+        return user;
+    }
+}