diff --git a/web/src/main/java/com/ibeetl/jlw/service/CourseInfoService.java b/web/src/main/java/com/ibeetl/jlw/service/CourseInfoService.java
index 0a676689..063a665b 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/CourseInfoService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/CourseInfoService.java
@@ -1114,13 +1114,15 @@ public class CourseInfoService extends CoreBaseService<CourseInfo>{
                         .limit(1, 1)
                         .select(CourseInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    CourseInfo minOrderClientLink = result.get(0);
-                    // 最小的排序值
-                    BigDecimal minLinkOrder = minOrderClientLink.getOrderIndex();
-                    // 置顶就现有的最小值减1。但是需要确保结果小于0
-                    calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
                 }
+
+                CourseInfo minOrderClientLink = result.get(0);
+                // 最小的排序值
+                BigDecimal minLinkOrder = minOrderClientLink.getOrderIndex();
+                // 置顶就现有的最小值减1。但是需要确保结果小于0
+                calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
             } break;
 
 
@@ -1134,20 +1136,22 @@ public class CourseInfoService extends CoreBaseService<CourseInfo>{
                         .limit(1, 2)
                         .select(CourseInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
-                    BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getOrderIndex();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
+                }
 
-                    // 左移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
+                BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getOrderIndex();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 左移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
 
 
@@ -1161,20 +1165,22 @@ public class CourseInfoService extends CoreBaseService<CourseInfo>{
                         .limit(1, 2)
                         .select(CourseInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
-                    BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getOrderIndex();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置底状态！");
+                }
 
-                    // 右移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
+                BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getOrderIndex();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 右移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
             default:
                 log.error("不支持的移动类型！");
diff --git a/web/src/main/java/com/ibeetl/jlw/service/ResourcesInfoService.java b/web/src/main/java/com/ibeetl/jlw/service/ResourcesInfoService.java
index 9663f7e2..68216460 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/ResourcesInfoService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/ResourcesInfoService.java
@@ -8,6 +8,7 @@ import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.RandomUtil;
 import cn.jlw.aliPay.utils.StringUtils;
 import com.ibeetl.admin.core.service.CoreBaseService;
+import com.ibeetl.admin.core.util.PlatformException;
 import com.ibeetl.jlw.dao.CourseInfoDao;
 import com.ibeetl.jlw.dao.ResourcesInfoDao;
 import com.ibeetl.jlw.entity.CourseInfo;
@@ -331,13 +332,15 @@ public class ResourcesInfoService extends CoreBaseService<ResourcesInfo>{
                         .limit(1, 1)
                         .select(ResourcesInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    ResourcesInfo minOrderClientLink = result.get(0);
-                    // 最小的排序值
-                    BigDecimal minLinkOrder = minOrderClientLink.getOrderIndex();
-                    // 置顶就现有的最小值减1。但是需要确保结果小于0
-                    calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
                 }
+
+                ResourcesInfo minOrderClientLink = result.get(0);
+                // 最小的排序值
+                BigDecimal minLinkOrder = minOrderClientLink.getOrderIndex();
+                // 置顶就现有的最小值减1。但是需要确保结果小于0
+                calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
             } break;
 
 
@@ -349,20 +352,22 @@ public class ResourcesInfoService extends CoreBaseService<ResourcesInfo>{
                         .limit(1, 2)
                         .select(ResourcesInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
-                    BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getOrderIndex();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
+                }
 
-                    // 左移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
+                BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getOrderIndex();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 左移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
 
 
@@ -374,20 +379,22 @@ public class ResourcesInfoService extends CoreBaseService<ResourcesInfo>{
                         .limit(1, 2)
                         .select(ResourcesInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
-                    BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getOrderIndex();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置底状态！");
+                }
 
-                    // 右移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
+                BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getOrderIndex();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 右移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
             default:
                 log.error("不支持的移动类型！");
diff --git a/web/src/main/java/com/ibeetl/jlw/service/StudentClientLinkService.java b/web/src/main/java/com/ibeetl/jlw/service/StudentClientLinkService.java
index 397f80e1..c68624b8 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/StudentClientLinkService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/StudentClientLinkService.java
@@ -208,19 +208,21 @@ public class StudentClientLinkService extends CoreBaseService<StudentClientLink>
                         .limit(1, 1)
                         .select(StudentClientLink::getStudentClientLinkOrder);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    StudentClientLink minOrderClientLink = result.get(0);
-                    // 最小的排序值
-                    BigDecimal minLinkOrder = minOrderClientLink.getStudentClientLinkOrder();
-                    // 置顶就现有的最小值减1。但是需要确保结果小于0
-                    BigDecimal calcedOrder = BigDecimal.valueOf(NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1));
-
-                    // 改变排序记录值
-                    StudentClientLink updatePO = new StudentClientLink();
-                    updatePO.setStudentClientLinkId(studentClientLink.getStudentClientLinkId());
-                    updatePO.setStudentClientLinkOrder(calcedOrder);
-                    updateTemplate(updatePO);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
                 }
+
+                StudentClientLink minOrderClientLink = result.get(0);
+                // 最小的排序值
+                BigDecimal minLinkOrder = minOrderClientLink.getStudentClientLinkOrder();
+                // 置顶就现有的最小值减1。但是需要确保结果小于0
+                BigDecimal calcedOrder = BigDecimal.valueOf(NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1));
+
+                // 改变排序记录值
+                StudentClientLink updatePO = new StudentClientLink();
+                updatePO.setStudentClientLinkId(studentClientLink.getStudentClientLinkId());
+                updatePO.setStudentClientLinkOrder(calcedOrder);
+                updateTemplate(updatePO);
             } break;
 
 
@@ -234,27 +236,28 @@ public class StudentClientLinkService extends CoreBaseService<StudentClientLink>
                         .limit(1, 2)
                         .select(StudentClientLink::getStudentClientLinkOrder);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getStudentClientLinkOrder();
-                    BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getStudentClientLinkOrder();
-                    }
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
+                }
 
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getStudentClientLinkOrder();
+                BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getStudentClientLinkOrder();
+                }
 
-                    // 左移位后的值
-                    double calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
 
-                    // 改变排序记录值
-                    StudentClientLink updatePO = new StudentClientLink();
-                    updatePO.setStudentClientLinkId(studentClientLink.getStudentClientLinkId());
-                    updatePO.setStudentClientLinkOrder(BigDecimal.valueOf(calcedOrder));
-                    updateTemplate(updatePO);
+                // 左移位后的值
+                double calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
 
-                }
+                // 改变排序记录值
+                StudentClientLink updatePO = new StudentClientLink();
+                updatePO.setStudentClientLinkId(studentClientLink.getStudentClientLinkId());
+                updatePO.setStudentClientLinkOrder(BigDecimal.valueOf(calcedOrder));
+                updateTemplate(updatePO);
             } break;
 
 
@@ -268,26 +271,28 @@ public class StudentClientLinkService extends CoreBaseService<StudentClientLink>
                         .limit(1, 2)
                         .select(StudentClientLink::getStudentClientLinkOrder);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getStudentClientLinkOrder();
-                    BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getStudentClientLinkOrder();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
-
-                    // 右移位后的值
-                    double calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
-
-                    // 改变排序记录值
-                    StudentClientLink updatePO = new StudentClientLink();
-                    updatePO.setStudentClientLinkId(studentClientLink.getStudentClientLinkId());
-                    updatePO.setStudentClientLinkOrder(BigDecimal.valueOf(calcedOrder));
-                    updateTemplate(updatePO);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
                 }
+
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getStudentClientLinkOrder();
+                BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getStudentClientLinkOrder();
+                }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 右移位后的值
+                double calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+
+                // 改变排序记录值
+                StudentClientLink updatePO = new StudentClientLink();
+                updatePO.setStudentClientLinkId(studentClientLink.getStudentClientLinkId());
+                updatePO.setStudentClientLinkOrder(BigDecimal.valueOf(calcedOrder));
+                updateTemplate(updatePO);
             } break;
 
 
diff --git a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeCourseInfoService.java b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeCourseInfoService.java
index e8da383a..2609068f 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeCourseInfoService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeCourseInfoService.java
@@ -1210,13 +1210,15 @@ public class TeacherOpenCourseMergeCourseInfoService extends CoreBaseService<Tea
                         .limit(1, 1)
                         .select(TeacherOpenCourseMergeCourseInfo::getTeacherOpenCourseMergeCourseInfoOrder);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    TeacherOpenCourseMergeCourseInfo minOrderClientLink = result.get(0);
-                    // 最小的排序值
-                    BigDecimal minLinkOrder = minOrderClientLink.getTeacherOpenCourseMergeCourseInfoOrder();
-                    // 置顶就现有的最小值减1。但是需要确保结果小于0
-                    calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
                 }
+
+                TeacherOpenCourseMergeCourseInfo minOrderClientLink = result.get(0);
+                // 最小的排序值
+                BigDecimal minLinkOrder = minOrderClientLink.getTeacherOpenCourseMergeCourseInfoOrder();
+                // 置顶就现有的最小值减1。但是需要确保结果小于0
+                calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
             } break;
 
 
@@ -1230,20 +1232,22 @@ public class TeacherOpenCourseMergeCourseInfoService extends CoreBaseService<Tea
                         .limit(1, 2)
                         .select(TeacherOpenCourseMergeCourseInfo::getTeacherOpenCourseMergeCourseInfoOrder);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getTeacherOpenCourseMergeCourseInfoOrder();
-                    BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getTeacherOpenCourseMergeCourseInfoOrder();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
+                }
 
-                    // 左移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getTeacherOpenCourseMergeCourseInfoOrder();
+                BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getTeacherOpenCourseMergeCourseInfoOrder();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 左移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
 
 
@@ -1257,20 +1261,22 @@ public class TeacherOpenCourseMergeCourseInfoService extends CoreBaseService<Tea
                         .limit(1, 2)
                         .select(TeacherOpenCourseMergeCourseInfo::getTeacherOpenCourseMergeCourseInfoOrder);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getTeacherOpenCourseMergeCourseInfoOrder();
-                    BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getTeacherOpenCourseMergeCourseInfoOrder();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置底状态！");
+                }
 
-                    // 右移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getTeacherOpenCourseMergeCourseInfoOrder();
+                BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getTeacherOpenCourseMergeCourseInfoOrder();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 右移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
             default:
                 log.error("不支持的移动类型！");
diff --git a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeResourcesInfoService.java b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeResourcesInfoService.java
index 8b5fba50..dfd53893 100644
--- a/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeResourcesInfoService.java
+++ b/web/src/main/java/com/ibeetl/jlw/service/TeacherOpenCourseMergeResourcesInfoService.java
@@ -484,13 +484,15 @@ public class TeacherOpenCourseMergeResourcesInfoService extends CoreBaseService<
                         .limit(1, 1)
                         .select(TeacherOpenCourseMergeResourcesInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    TeacherOpenCourseMergeResourcesInfo minOrderClientLink = result.get(0);
-                    // 最小的排序值
-                    BigDecimal minLinkOrder = minOrderClientLink.getOrderIndex();
-                    // 置顶就现有的最小值减1。但是需要确保结果小于0
-                    calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
                 }
+
+                TeacherOpenCourseMergeResourcesInfo minOrderClientLink = result.get(0);
+                // 最小的排序值
+                BigDecimal minLinkOrder = minOrderClientLink.getOrderIndex();
+                // 置顶就现有的最小值减1。但是需要确保结果小于0
+                calcedOrder = NumberUtil.sub(min(minLinkOrder.floatValue(), 0), 1);
             } break;
 
 
@@ -505,20 +507,22 @@ public class TeacherOpenCourseMergeResourcesInfoService extends CoreBaseService<
                         .limit(1, 2)
                         .select(TeacherOpenCourseMergeResourcesInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
-                    BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getOrderIndex();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置顶状态！");
+                }
 
-                    // 左移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
+                BigDecimal LinkOrder1 = LinkOrder0.subtract(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getOrderIndex();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 左移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
 
 
@@ -532,20 +536,22 @@ public class TeacherOpenCourseMergeResourcesInfoService extends CoreBaseService<
                         .limit(1, 2)
                         .select(TeacherOpenCourseMergeResourcesInfo::getOrderIndex);
 
-                if (CollectionUtil.isNotEmpty(result)) {
-                    // 找到应该安插的位置
-                    BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
-                    BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
-                    if (result.size() == 2) {
-                        LinkOrder1 = result.get(1).getOrderIndex();
-                    }
-
-                    BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
-                    BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+                if (CollectionUtil.isEmpty(result)) {
+                    throw new PlatformException("已处于置底状态！");
+                }
 
-                    // 右移位后的值
-                    calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
+                // 找到应该安插的位置
+                BigDecimal LinkOrder0 = result.get(0).getOrderIndex();
+                BigDecimal LinkOrder1 = LinkOrder0.add(BigDecimal.ONE);
+                if (result.size() == 2) {
+                    LinkOrder1 = result.get(1).getOrderIndex();
                 }
+
+                BigDecimal min = NumberUtil.min(LinkOrder0, LinkOrder1);
+                BigDecimal max = NumberUtil.max(LinkOrder0, LinkOrder1);
+
+                // 右移位后的值
+                calcedOrder = RandomUtil.randomDouble(min.doubleValue(), max.doubleValue(), 6, RoundingMode.HALF_UP);
             } break;
             default:
                 log.error("不支持的移动类型！");