diff --git a/src/main/java/com/zhangmeng/online/exam/controller/QuestionController.java b/src/main/java/com/zhangmeng/online/exam/controller/QuestionController.java
index f5a4910..e3cc22b 100644
--- a/src/main/java/com/zhangmeng/online/exam/controller/QuestionController.java
+++ b/src/main/java/com/zhangmeng/online/exam/controller/QuestionController.java
@@ -131,4 +131,6 @@ public class QuestionController {
         map.put("explanation", question.getExplanation());
         return Result.success(map);
     }
+
+
 }
diff --git a/src/main/java/com/zhangmeng/online/exam/controller/SubjectController.java b/src/main/java/com/zhangmeng/online/exam/controller/SubjectController.java
index 04d05e3..d0dcfc1 100644
--- a/src/main/java/com/zhangmeng/online/exam/controller/SubjectController.java
+++ b/src/main/java/com/zhangmeng/online/exam/controller/SubjectController.java
@@ -11,7 +11,9 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Sort;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 import java.util.ArrayList;
@@ -61,11 +63,80 @@ public class SubjectController {
             map.put("id", subject.getId());
             map.put("name", subject.getName());
             map.put("code", subject.getCode());
-            map.put("desc",subject.getDescription());
+            map.put("desc", subject.getDescription());
 //            map.put("profession",subject.getProfession().getName());
             resultList.add(map);
         }
 
         return Result.success(resultList);
     }
+
+    @RequestMapping("/saveSubject")
+    public Result saveSubject(@RequestBody @RequestParam Map<String, Object> params) {
+
+        String id = (String) params.get("id");
+        String name = (String) params.get("name");
+        String code = (String) params.get("code");
+        String description = (String) params.get("desc");
+
+        Subject subject;
+        if (id != null && !id.isEmpty()) {
+            subject = this.subjectDao.findById(Long.parseLong(id)).get();
+        } else {
+            subject = new Subject();
+        }
+        subject.setName(name);
+        subject.setCode(code);
+        subject.setDescription(description);
+        this.subjectDao.save(subject);
+        return Result.success(null);
+    }
+
+    @RequestMapping("/delete")
+    public Result delete(@RequestParam Long id) {
+        this.subjectDao.deleteById(id);
+        return Result.success(null);
+    }
+
+    @RequestMapping("/getSubjectById")
+    public Result getSubjectById(@RequestParam Long id) {
+        Subject subject = this.subjectDao.findById(id).get();
+        Map<String, Object> map = new HashMap<>();
+        map.put("id", subject.getId());
+        map.put("name", subject.getName());
+        map.put("code", subject.getCode());
+        map.put("desc", subject.getDescription());
+        return Result.success(map);
+    }
+
+    @RequestMapping("/getSubjectByCode")
+    public Result getSubjectByCode(@RequestParam String code) {
+        Subject subject = this.subjectDao.findByCode(code);
+        Map<String, Object> map = new HashMap<>();
+        map.put("id", subject.getId());
+        map.put("name", subject.getName());
+        map.put("code", subject.getCode());
+        map.put("desc", subject.getDescription());
+        return Result.success(map);
+    }
+
+    @RequestMapping("/update")
+    public Result update(@RequestBody @RequestParam Map<String, Object> params) {
+
+        String id = params.get("id").toString();
+        String fieldName = params.get("fieldName").toString();
+//        String oldValue = params.get("oldValue").toString();
+        String newValue = params.get("newValue").toString();
+
+        Subject subject = subjectDao.findById(Long.parseLong(id)).get();
+
+        switch (fieldName) {
+            case "name" -> subject.setName(newValue);
+            case "code" -> subject.setCode(newValue);
+            case "description" -> subject.setDescription(newValue);
+        }
+
+        subjectDao.save(subject);
+        return Result.success(null);
+    }
 }