diff --git a/src/main/java/com/sztzjy/financial_bigdata/controller/stu/ExamController.java b/src/main/java/com/sztzjy/financial_bigdata/controller/stu/ExamController.java
index b1cd864..c5abb5d 100644
--- a/src/main/java/com/sztzjy/financial_bigdata/controller/stu/ExamController.java
+++ b/src/main/java/com/sztzjy/financial_bigdata/controller/stu/ExamController.java
@@ -86,7 +86,10 @@ public class ExamController {
     @GetMapping("startCase")
     @ApiOperation("**案例考核开始考试")
     @AnonymousAccess
-    public ResultEntity<List<TestTestSysCaseQuestionStepWithBLOBs>> startCase(@RequestParam String examManageId,@RequestParam String userId,@RequestParam String classId,@ApiParam("默认差第一条 传递first")@RequestParam String caseId){
+    public ResultEntity<List<TestTestSysCaseQuestionStepWithBLOBs>> startCase(@RequestParam String examManageId,
+                                                                              @RequestParam String userId,
+                                                                              @RequestParam String classId,
+                                                                              @ApiParam("默认差第一条 传递first")@RequestParam String caseId){
         List<TestTestSysCaseQuestionStepWithBLOBs> list= null;
         try {
             list = examService.startCase(examManageId,userId,classId,caseId);
diff --git a/src/main/resources/mapper/StuUserMapper.xml b/src/main/resources/mapper/StuUserMapper.xml
index bad8766..aa558c3 100644
--- a/src/main/resources/mapper/StuUserMapper.xml
+++ b/src/main/resources/mapper/StuUserMapper.xml
@@ -485,7 +485,7 @@
             system_onwer =#{systemOwner}
             and role_id = 4
             <if test="classId != null and classId != ''">
-                 class_id = #{classId}
+                AND class_id = #{classId}
             </if>
             <if test="schoolId != null and schoolId != ''">
                 AND school_id = #{schoolId}