fix

server-db/src/main/java/cn/exploring/engine/server/db/domain/vo/StudentVo.java

+package cn.exploring.engine.server.db.domain.vo;
+
+import cn.exploring.engine.server.db.domain.StudentInfo;
+
+/**
+ * @author Liu_c
+ */
+public class StudentVo extends StudentInfo {
+    public String ClassName;
+
+    public String getClassName() {
+        return ClassName;
+    }
+
+    public void setClassName(String className) {
+        ClassName = className;
+    }
+}

server-db/src/main/java/cn/exploring/engine/server/db/service/StudentInfoService.java

@@ -4,9 +4,10 @@ import cn.exploring.engine.server.db.dao.SpecialSqlMapper;
 import cn.exploring.engine.server.db.dao.StudentInfoMapper;
 import cn.exploring.engine.server.db.domain.StudentInfo;
 import cn.exploring.engine.server.db.domain.StudentInfoExample;
-import com.alibaba.fastjson.JSON;
+import cn.exploring.engine.server.db.domain.vo.StudentVo;
 import com.github.pagehelper.PageHelper;
 import com.github.pagehelper.PageInfo;
+import org.springframework.beans.BeanUtils;
 import org.springframework.stereotype.Service;
 import org.springframework.util.StringUtils;
 
@@ -126,10 +127,11 @@ public class StudentInfoService {
         example.setOrderByClause(sort + " " + order);
         List<StudentInfo> studentInfoList =  studentInfoMapper.selectByExample(example);
         Map<Integer, String> classMap = classService.getClassNameMap();
-        List<Map> dataList = studentInfoList.stream().map(x -> {
-            Map oneData = JSON.parseObject(JSON.toJSONString(x), Map.class);
-            oneData.put("className", classMap.get(classId));
-            return oneData;
+        List<StudentVo> dataList = studentInfoList.stream().map(x -> {
+            StudentVo voData = new StudentVo();
+            BeanUtils.copyProperties(x, voData);
+            voData.setClassName(classMap.get(x.getClassId()));
+            return voData;
         }).collect(Collectors.toList());
         Long total = PageInfo.of(studentInfoList).getTotal();
         return new HashMap(){{