全局异常和返回统一结果集

src/main/java/com/zhiyun/zhiyun03/application/mapper/ApplicationMapper.java

@@ -4,6 +4,7 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.zhiyun.zhiyun03.application.entity.Application;
 import org.apache.ibatis.annotations.Mapper;
 
+
 @Mapper
 public interface ApplicationMapper extends BaseMapper<Application> {
 }

src/main/java/com/zhiyun/zhiyun03/course/config/MybatisPlusConfig.java

@@ -0,0 +1,19 @@
+package com.zhiyun.zhiyun03.course.config;
+
+import com.baomidou.mybatisplus.annotation.DbType;
+import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
+import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class MybatisPlusConfig {
+    // 从MyBatis-Plus 3.4.0开始，不再使用旧版本的PaginationInterceptor ，而是使用MybatisPlusInterceptor
+    @Bean
+    public MybatisPlusInterceptor mybatisPlusInterceptor() {
+        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
+        // 向MyBatis-Plus的过滤器链中添加分页拦截器，需要设置数据库类型（主要用于分页方言）
+        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
+        return interceptor;
+    }
+}

src/main/java/com/zhiyun/zhiyun03/course/controller/CourseController.java

@@ -7,11 +7,14 @@ import com.zhiyun.zhiyun03.course.entity.Course;
 
 import com.zhiyun.zhiyun03.course.service.CourseService;
 import com.zhiyun.zhiyun03.course.vo.CourseVo;
+import com.zhiyun.zhiyun03.course.vo.PageVO;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiParam;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
+import javax.annotation.Resource;
 import java.util.List;
 
 @Api("课程")
@@ -19,7 +22,7 @@ import java.util.List;
 @RequestMapping("/api/course")
 public class CourseController {
 
-    @Autowired
+    @Resource
     private CourseService courseService;
 
 
@@ -27,17 +30,17 @@ public class CourseController {
     @GetMapping("/selectAll")
     public List<CourseVo> queryCourse(){
 
-        List<CourseVo> list = courseService.queryCourse();
+        List<CourseVo> lists =  courseService.queryCourse();
-        return list;
+        return lists;
     }
 
 
-//    @ApiOperation("课程添加")
+    @ApiOperation("课程添加")
-//    @PostMapping("/add")
+    @PostMapping("/add")
-//    public JsonResult addCourse(Course course){
+    public String addCourse(Course course){
-//        courseService.addCourse(course);
+        courseService.addCourse(course);
-//        return JsonResult.ok();
+        return "success";
-//    }
+    }
 //
 ////    @ApiOperation("查询目录")
 ////    @PostMapping("/select")
@@ -46,20 +49,20 @@ public class CourseController {
 ////        return JsonResult.ok();
 ////    }
 //
-//    @ApiOperation("删除课程")
+    @ApiOperation("删除课程")
-//    @DeleteMapping("delById")
+    @DeleteMapping("delById")
-//    public JsonResult delCourseById(Integer id){
+    public String delCourseById(Integer id){
-//        courseService.delCourseById(id);
+        courseService.delCourseById(id);
-//return JsonResult.ok();
+        return "success";
-//    }
+    }
-//
+
-//    @ApiOperation("更新课程")
+    @ApiOperation("更新课程")
-//    @DeleteMapping("updateById")
+    @PostMapping("update")
-//    public JsonResult updateById(Course course){
+    public String updateById(Course course){
-//        courseService.updateById(course);
+        courseService.update(course);
-//        return JsonResult.ok();
+        return "success";
-//    }
+    }
-//
+
 
 
 

src/main/java/com/zhiyun/zhiyun03/course/mapper/CourseMapper.java

@@ -4,6 +4,11 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.zhiyun.zhiyun03.course.entity.Course;
 import org.apache.ibatis.annotations.Mapper;
 
+import java.util.List;
+
 @Mapper
 public interface CourseMapper extends BaseMapper<Course> {
+
+
+
 }

src/main/java/com/zhiyun/zhiyun03/course/param/PageParam.java

@@ -0,0 +1,9 @@
+package com.zhiyun.zhiyun03.course.param;
+
+import lombok.Data;
+
+@Data
+public class PageParam {
+    private Integer currentPage;
+    private Integer pageSize;
+}

src/main/java/com/zhiyun/zhiyun03/course/service/CourseService.java

@@ -1,11 +1,15 @@
 package com.zhiyun.zhiyun03.course.service;
 
+import com.baomidou.mybatisplus.extension.service.IService;
 import com.zhiyun.zhiyun03.course.entity.Course;
 import com.zhiyun.zhiyun03.course.vo.CourseVo;
+import com.zhiyun.zhiyun03.course.vo.PageVO;
+import io.swagger.annotations.ApiParam;
+import org.springframework.web.bind.annotation.RequestParam;
 
 import java.util.List;
 
-public interface CourseService {
+public interface CourseService extends IService<Course> {
 //    public void addCourse(Course course);
 //
 //    void delCourseById(Integer id);
@@ -14,4 +18,10 @@ public interface CourseService {
 
 
     List<CourseVo> queryCourse();
+
+    void addCourse(Course course);
+
+    void delCourseById(Integer id);
+
+    void update(Course course);
 }

src/main/java/com/zhiyun/zhiyun03/course/service/impl/CourseServiceImpl.java

@@ -1,7 +1,10 @@
 package com.zhiyun.zhiyun03.course.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.fasterxml.jackson.databind.util.BeanUtil;
+import com.github.pagehelper.Page;
 import com.zhiyun.zhiyun03.application.entity.Directory;
 import com.zhiyun.zhiyun03.application.mapper.DirectoryMapper;
 import com.zhiyun.zhiyun03.application.util.ConvertUtil;
@@ -9,6 +12,8 @@ import com.zhiyun.zhiyun03.course.entity.Course;
 import com.zhiyun.zhiyun03.course.service.CourseService;
 import com.zhiyun.zhiyun03.course.vo.CourseVo;
 import com.zhiyun.zhiyun03.course.mapper.CourseMapper;
+import com.zhiyun.zhiyun03.course.vo.PageVO;
+import org.springframework.beans.BeanUtils;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.Resource;
@@ -21,7 +26,7 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper,Course> implemen
     private CourseMapper courseMapper;
 
     @Resource
-    DirectoryMapper directoryMapper;
+   private DirectoryMapper directoryMapper;
 
 
 
@@ -30,6 +35,7 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper,Course> implemen
      */
     @Override
     public List<CourseVo> queryCourse() {
+
         QueryWrapper<Course> qwa=new QueryWrapper<>();
         List<Course> courses = courseMapper.selectList(qwa);
         QueryWrapper<Directory> qwd=new QueryWrapper<>();
@@ -39,21 +45,53 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper,Course> implemen
 
         for (int i = 0; i < courses.size(); i++) {
             for (int j = 0; j <directories.size() ; j++) {
-                if(courses.get(i).getDirId()==directories.get(i).getId()){
+                //判断目录id是否相等
-                    applicationVos.get(i).setDirName(directories.get(i).getDirName());
+                if(courses.get(i).getDirId()==directories.get(j).getId()){
+                    //将目录名称添加到vo类中
+                    applicationVos.get(i).setDirName(directories.get(j).getDirName());
                 }
             }
         }
         return applicationVos;
+
+
+
     }
 
 
 
-//    @Override
+    @Override
-//    public void addCourse(Course course) {
+    public void addCourse(Course course) {
-//        courseDAO.insert(course);
+
-//    }
+        courseMapper.insert(course);
-//
+        UpdateWrapper<Directory> updateWrapper = new UpdateWrapper<>();
+        updateWrapper.set("id",course.getDirId());
+        directoryMapper.update(null,updateWrapper);
+
+
+    }
+
+    @Override
+    public void delCourseById(Integer id) {
+        courseMapper.deleteById(id);
+    }
+
+    @Override
+    public void update(Course course) {
+        //变更数据进行更新
+
+
+
+        UpdateWrapper<Course> updateWrapper = new UpdateWrapper<>();
+        updateWrapper.set("course_name",course.getCourseName());
+        updateWrapper.set("course_brief",course.getCourseBrief());
+        updateWrapper.set("course_url",course.getCourseUrl());
+        updateWrapper.set("dir_id",course.getDirId());
+        updateWrapper.set("course_icon",course.getCourseIcon());
+        updateWrapper.eq("id",course.getId());
+        courseMapper.update(null,updateWrapper);
+    }
+
 //    @Override
 //    public void delCourseById(Integer id) {
 //        courseDAO.deleteByPrimaryKey(id);

src/main/java/com/zhiyun/zhiyun03/course/vo/CourseVo.java

@@ -1,10 +1,11 @@
 package com.zhiyun.zhiyun03.course.vo;
 
 import com.baomidou.mybatisplus.annotation.TableId;
+import com.zhiyun.zhiyun03.course.param.PageParam;
 import lombok.Data;
 
 @Data
-public class CourseVo{
+public class CourseVo {
     @TableId
     private int id;
 
@@ -16,5 +17,5 @@ public class CourseVo{
 
     private String dirName;
 
-    private String appIcon;
+    private String courseIcon;
 }

src/main/java/com/zhiyun/zhiyun03/course/vo/PageVO.java

@@ -0,0 +1,13 @@
+package com.zhiyun.zhiyun03.course.vo;
+
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class PageVO<T> {
+
+    private Integer currentPage;
+    private Long total;
+    private List<T> list;
+}

src/main/java/com/zhiyun/zhiyun03/utils/common/Result.java

@@ -0,0 +1,76 @@
+package com.zhiyun.zhiyun03.utils.common;
+
+import lombok.Data;
+
+@Data
+public class Result<T> {
+
+//返回信息码
+private String code;
+//返回信息
+private String msg;
+//返回数据
+T data;
+
+public Result(){}
+
+public  Result(T data){
+    this.data=data;
+}
+
+
+//成功，只返回成功码和信息
+public  Result<T> success(){
+    Result<T> result=new Result<>();
+    result.setCode(ResultCode.SUCCESS.code);
+    result.setMsg(ResultCode.SUCCESS.msg);
+    return result;
+}
+
+//成功，返回成功码、信息和数据
+public Result<T> success(T data){
+    Result<T> result=new Result();
+    result.setCode(ResultCode.SUCCESS.code);
+    result.setMsg(ResultCode.SUCCESS.msg);
+    result.setData(data);
+    return result;
+}
+
+//失败，返回自己定义的信息码和信息
+public Result<T> error(){
+    Result<T> result=new Result<>();
+    result.setCode(ResultCode.ERROR.code);
+    result.setMsg(ResultCode.ERROR.code);
+    return result;
+}
+
+//失败，返回controller层传过来信息码和信息
+public Result<T> error(String code,String msg){
+    Result<T> result=new Result<>();
+    result.setCode(code);
+    result.setMsg(msg);
+    return result;
+}
+
+
+public void setCode(String code){
+    this.code=code;
+}
+
+public void setMsg(String msg){
+    this.msg=msg;
+}
+
+public void setData(T data){
+    this.data=data;
+}
+
+@Override
+public String toString() {
+    return "Result{" +
+            "code='" + code + '\'' +
+            ", msg='" + msg + '\'' +
+            ", data=" + data +
+            '}';
+}
+}

src/main/java/com/zhiyun/zhiyun03/utils/common/ResultCode.java

@@ -0,0 +1,22 @@
+package com.zhiyun.zhiyun03.utils.common;
+
+public enum ResultCode {
+    SUCCESS("0", "成功"),
+    ERROR("-1", "系统异常"),
+    PARAM_ERROR("1001", "参数异常"),
+    USER_EXIST_ERROR("2001", "用户已存在"),
+    USER_ACCOUNT_ERROR("2002", "账号或密码错误"),
+    USER_NOT_EXIST_ERROR("2003", "未找到用户"),
+    ORDER_PAY_ERROR("3001", "库存不足，下单失败"),
+    PARAM_LOST_ERROR("2004", "参数缺失"),
+    PARAM_PASSWORD_ERROR("2005", "原密码输入错误"),
+    ;
+
+    public String code;
+    public String msg;
+
+    ResultCode(String code, String msg) {
+        this.code = code;
+        this.msg = msg;
+    }
+}

src/main/java/com/zhiyun/zhiyun03/utils/exception/GlobalExceptionHandler.java

@@ -0,0 +1,27 @@
+package com.zhiyun.zhiyun03.utils.exception;
+
+import com.zhiyun.zhiyun03.utils.common.Result;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+// @RestController + @ResponseBody
+@RestControllerAdvice
+@Slf4j
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(ServiceException.class)
+    public Result serviceExceptionHandler(ServiceException e) {
+        log.error("异常信息", e);
+        Result<Object> result = new Result<>();
+        return result.error(e.getCode(), e.getMsg());
+    }
+
+    @ExceptionHandler(Exception.class)
+    public Result exceptionHandler(Exception e) {
+        log.error("未知异常", e);
+        Result<Object> result = new Result<>();
+        return result.error("500", "未知异常，请联系管理员");
+    }
+
+}

src/main/java/com/zhiyun/zhiyun03/utils/exception/ServiceException.java

@@ -0,0 +1,33 @@
+package com.zhiyun.zhiyun03.utils.exception;
+
+public class ServiceException extends RuntimeException {
+
+    private String code;
+    private String msg;
+
+    public ServiceException() {
+    }
+
+    public ServiceException(String code, String msg) {
+        super(msg);
+        this.code = code;
+        this.msg = msg;
+
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public String getMsg() {
+        return msg;
+    }
+
+    public void setMsg(String msg) {
+        this.msg = msg;
+    }
+}

src/main/resources/application.yml

@@ -1,23 +1,29 @@
 server:
   port: 8080
 
-
+#
-mybatis:
+#mybatis:
-  mapper-locations: classpath*:mapper/**/*.xml
+#  mapper-locations: classpath*:mapper/**/*.xml
-  configuration:
+#  configuration:
-    map-underscore-to-camel-case: true
+#    map-underscore-to-camel-case: true
-    # ???????
+#    # ???????
-    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+#    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
-
+#
 spring:
   datasource:
     type: com.alibaba.druid.pool.DruidDataSource
-    driverClassName: com.mysql.cj.jdbc.Driver
+    driverClassName: com.mysql.jdbc.Driver
     druid:
       url: jdbc:mysql://localhost:3306/zhiyun?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai
       username: root
       password: root
 
 
+
+# mybatis plus的配置和mybatis类似，之前在mybatis的配置，使用mybtis-plus替换
+mybatis-plus:
+  configuration:
+    # 控制台打印日志
+    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
 swagger:
-  enabled: true
+  enabled: true