自定义注解@ValidateParams

全局拦截器校验参数非空
课程内容相关代码优化

pom.xml

@@ -190,6 +190,12 @@
             <artifactId>easypoi-spring-boot-starter</artifactId>
             <version>4.1.3</version>
         </dependency>
+
+        <dependency>
+            <groupId>commons-io</groupId>
+            <artifactId>commons-io</artifactId>
+            <version>2.8.0</version>
+        </dependency>
     </dependencies>
 
 

src/main/java/com/teaching/backend/common/ErrorCode.java

@@ -36,6 +36,8 @@ public enum ErrorCode {
 
     PARAMS_COURSE_NOTEXISTS(4004,"课程不存在"),
     SYSTEM_ERROR(50000, "系统内部异常"),
+    UNKNOW_ERROR(50002, "系统内部异常"),
+
     OPERATION_ERROR(50001, "操作失败");
 
     /**

src/main/java/com/teaching/backend/config/WebConfig.java

@@ -0,0 +1,19 @@
+package com.teaching.backend.config;
+
+import com.teaching.backend.filter.ValidationInterceptor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    @Autowired
+    private ValidationInterceptor validationInterceptor;
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(validationInterceptor).addPathPatterns("/**");
+    }
+}

src/main/java/com/teaching/backend/controller/courses/CourseObjectivesController.java

@@ -4,6 +4,7 @@ package com.teaching.backend.controller.courses;
 import cn.hutool.core.bean.BeanUtil;
 import com.teaching.backend.common.BaseResponse;
 import com.teaching.backend.common.ResultUtils;
+import com.teaching.backend.filter.ValidateParams;
 import com.teaching.backend.mapper.courses.CourseObjectivesMapper;
 import com.teaching.backend.model.dto.courses.CourseObjectivesDTO;
 import com.teaching.backend.model.entity.courses.CourseObjectives;
@@ -37,6 +38,7 @@ public class CourseObjectivesController {
     CourseObjectivesMapper courseObjectivesMapper;
 
     @ApiOperation("新增分项目标-默认第一个必须添加思政目标")
+    @ValidateParams({"name","type","pid"})
     @PostMapping("/addobjectives")
     public BaseResponse<String> saveCourseObjectives(@RequestBody CourseObjectivesDTO courseObjectivesDTO){
         String data = courseObjectivesService.addObjectives(courseObjectivesDTO);
@@ -44,6 +46,7 @@ public class CourseObjectivesController {
     }
 
     @ApiOperation("删除分项目标-只能最后一个删除思政目标-总目标只需删除关联的内容")
+    @ValidateParams({"id"})
     @DeleteMapping("/{id}")
     public BaseResponse<String> deleteCourseObjectivesByIds(@PathVariable String id){
         String data = courseObjectivesService.deleteObjectives(id);
@@ -54,6 +57,7 @@ public class CourseObjectivesController {
      * @param courseObjectivesDTO
      * @return
      */
+    //TODO:分项目标按理说不能编辑，只可以新增 删除
     @ApiOperation("编辑分项目标")
     @PutMapping
     public BaseResponse<String> updateCourseObjectives(@RequestBody CourseObjectivesDTO courseObjectivesDTO){
@@ -65,6 +69,7 @@ public class CourseObjectivesController {
     }
 
     @ApiOperation("查询课程目标内容")
+    @ValidateParams({"id"})
     @GetMapping("/list/{id}")
     public BaseResponse<List<CourseObjectivesTreeVO>> queryCourseObjectivesTree(@PathVariable String id){
             List<CourseObjectivesTreeVO> courseObjectivesTreeVO = courseObjectivesService.queryCourseObjectivesTree(id);

src/main/java/com/teaching/backend/controller/courses/CoursesController.java

@@ -6,6 +6,7 @@ import com.teaching.backend.common.ErrorCode;
 import com.teaching.backend.common.ResultUtils;
 import com.teaching.backend.exception.BusinessException;
 
+import com.teaching.backend.filter.ValidateParams;
 import com.teaching.backend.model.dto.courses.CoursesDTO;
 import com.teaching.backend.model.dto.courses.PageDTO;
 
@@ -56,6 +57,7 @@ public class CoursesController {
     }
 
     @ApiOperation("新增课程--同步新增课程的总体目标并同时添加所有的分项目标")
+    @ValidateParams({"teacher","img", "category", "nature","name","code","credit","classhours","assessmenttype","assessmentway"}) // 需要校验的参数
     @PostMapping("/addcourse")
     public BaseResponse<String> saveCourse(@RequestBody CoursesDTO coursesDTO){
         String data = coursesService.saveCourseWithObjective(coursesDTO);
@@ -63,8 +65,8 @@ public class CoursesController {
     }
 
 
-    //TODO:此处需要调整前端的接口
     @ApiOperation("查询课程列表")
+    @ValidateParams({"username"})
     @GetMapping("/page")
     public BaseResponse<PageDTO<CoursesVO>> getCourses(CourseQuery courseQuery){
         PageDTO<CoursesVO> coursesList = coursesService.queryCourses(courseQuery);
@@ -74,9 +76,6 @@ public class CoursesController {
     @ApiOperation("根据id查询课程")
     @GetMapping("/{id}")
     public BaseResponse<CoursesDTO> getByIdCourse(@PathVariable String id){
-        if(id==null){
-            throw new BusinessException(ErrorCode.PARAMS_ERROR,"课程id为空");
-        }
         Courses course = coursesService.getById(id);
         CoursesDTO coursesDTO = new CoursesDTO();
         BeanUtils.copyProperties(course,coursesDTO);
@@ -84,6 +83,7 @@ public class CoursesController {
     }
 
     @ApiOperation("根据id修改课程")
+    @ValidateParams({"id","teacher","img", "category", "nature","name","code","credit","classhours","assessmenttype","assessmentway"})
     @PutMapping
     public BaseResponse<String> editCourse(@RequestBody CoursesDTO coursesDTO){
         coursesService.updateCourse(coursesDTO);
@@ -92,6 +92,7 @@ public class CoursesController {
 
     //TODO:删除功能暂未完善，数据缺失
     @ApiOperation("根据id删除课程")
+    @ValidateParams({"id"})
     @DeleteMapping("/{id}")
     public BaseResponse deleteCourses(@PathVariable String id){
 

src/main/java/com/teaching/backend/controller/courses/ObjectiveContentKnowController.java

@@ -3,6 +3,7 @@ package com.teaching.backend.controller.courses;
 
 import com.teaching.backend.common.BaseResponse;
 import com.teaching.backend.common.ResultUtils;
+import com.teaching.backend.filter.ValidateParams;
 import com.teaching.backend.model.dto.courses.CoursesDTO;
 import com.teaching.backend.model.dto.courses.ObjectiveContentKnowDTO;
 import com.teaching.backend.model.vo.courses.ObjectiveContentKnowVO;
@@ -31,6 +32,7 @@ public class ObjectiveContentKnowController {
 
 
     @ApiOperation("给分项目标或者是内容添加知识点")
+    @ValidateParams({"objectiveId","know"})
     @PostMapping("/addknows")
     public BaseResponse<String> saveKnowsWithObjectiveOrContent(@RequestBody ObjectiveContentKnowDTO objectiveContentKnowDTO){
         String data  = objectiveContentKnowService.saveKnowsWithObjectiveOrContent(objectiveContentKnowDTO);
@@ -38,6 +40,7 @@ public class ObjectiveContentKnowController {
     }
 
     @ApiOperation("针对分项目标统计，支撑分项目标知识点的个数、学时合计、占比")
+    @ValidateParams({"objectiveId"})
     @GetMapping("/{objectiveId}")
     public BaseResponse<ObjectiveContentKnowVO> getCountData(@PathVariable String objectiveId){
         ObjectiveContentKnowVO objectiveContentKnowVO= objectiveContentKnowService.getCountData(objectiveId);

src/main/java/com/teaching/backend/controller/courses/ObjectiveContentsController.java

@@ -3,6 +3,7 @@ package com.teaching.backend.controller.courses;
 
 import com.teaching.backend.common.BaseResponse;
 import com.teaching.backend.common.ResultUtils;
+import com.teaching.backend.filter.ValidateParams;
 import com.teaching.backend.model.entity.courses.ObjectiveContents;
 import com.teaching.backend.service.courses.IObjectiveContentsService;
 import io.swagger.annotations.Api;
@@ -27,6 +28,7 @@ public class ObjectiveContentsController {
     IObjectiveContentsService objectiveContentsService;
 
     @ApiOperation("添加目标内容")
+    @ValidateParams({"objectiveId"})
     @PostMapping("/addcontent")
     public BaseResponse<String> saveContent(@RequestBody ObjectiveContents objectiveContents){
         objectiveContentsService.save(objectiveContents);
@@ -34,6 +36,7 @@ public class ObjectiveContentsController {
     }
 
     @ApiOperation("删除目标内容")
+    @ValidateParams({"id"})
     @DeleteMapping("/{id}")
     public BaseResponse<String> deleteContent(@PathVariable String id){
 //        objectiveContentsService.removeById(id);
@@ -42,6 +45,7 @@ public class ObjectiveContentsController {
     }
 
     @ApiOperation("修改目标内容")
+    @ValidateParams({"id","objectiveId"})
     @PutMapping("/update")
     public BaseResponse<String> updateContent(@RequestBody ObjectiveContents objectiveContents){
         objectiveContentsService.updateById(objectiveContents);
@@ -49,6 +53,7 @@ public class ObjectiveContentsController {
     }
 
     @ApiOperation("根据id查询目标内容")
+    @ValidateParams({"id"})
     @GetMapping("/{id}")
     public BaseResponse<ObjectiveContents> updateContent(@PathVariable String id){
         ObjectiveContents objectiveContent = objectiveContentsService.getById(id);

src/main/java/com/teaching/backend/exception/GlobalExceptionHandler.java

@@ -1,5 +1,8 @@
 package com.teaching.backend.exception;
 
+import com.teaching.backend.common.BaseResponse;
+import com.teaching.backend.common.ErrorCode;
+import com.teaching.backend.common.ResultUtils;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ExceptionHandler;
@@ -14,6 +17,11 @@ public class GlobalExceptionHandler {
         return new ResponseEntity<>(errorResponse, HttpStatus.BAD_REQUEST);
     }
 
+    @ExceptionHandler(Exception.class)
+    public BaseResponse handleException(Exception ex) {
+        return ResultUtils.error(ErrorCode.UNKNOW_ERROR, ex.getMessage());
+    }
+
     // 其他异常处理器可以按需添加
 
     public static class ErrorResponse {

src/main/java/com/teaching/backend/filter/BodyReaderWrapper.java

@@ -0,0 +1,51 @@
+package com.teaching.backend.filter;
+
+import org.apache.commons.io.IOUtils;
+
+import javax.servlet.ReadListener;
+import javax.servlet.ServletInputStream;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequestWrapper;
+import java.io.*;
+
+public class BodyReaderWrapper extends HttpServletRequestWrapper {
+    private final byte[] requestBody;
+
+    public BodyReaderWrapper(HttpServletRequest request) throws IOException {
+        super(request);
+        try (InputStream inputStream = request.getInputStream()) {
+            requestBody = IOUtils.toByteArray(inputStream);
+        }
+    }
+
+    @Override
+    public ServletInputStream getInputStream() {
+        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(requestBody);
+        return new ServletInputStream() {
+            @Override
+            public boolean isFinished() {
+                return byteArrayInputStream.available() == 0;
+            }
+
+            @Override
+            public boolean isReady() {
+                return true;
+            }
+
+            @Override
+            public void setReadListener(ReadListener readListener) {
+                // no-op
+            }
+
+            @Override
+            public int read() throws IOException {
+                return byteArrayInputStream.read();
+            }
+        };
+    }
+
+    @Override
+    public BufferedReader getReader() throws IOException {
+        return new BufferedReader(new InputStreamReader(getInputStream()));
+    }
+}

src/main/java/com/teaching/backend/filter/ReplaceStreamFilter.java

@@ -0,0 +1,37 @@
+package com.teaching.backend.filter;
+
+import org.springframework.stereotype.Component;
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletRequest;
+import java.io.IOException;
+
+@Component
+@WebFilter(urlPatterns = "/*")
+public class ReplaceStreamFilter implements Filter {
+
+    @Override
+    public void init(FilterConfig filterConfig) {
+        // no-op
+    }
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
+        ServletRequest requestWrapper = null;
+        if (request instanceof HttpServletRequest) {
+            requestWrapper = new BodyReaderWrapper((HttpServletRequest) request);
+        }
+        if (requestWrapper == null) {
+            chain.doFilter(request, response);
+        } else {
+            chain.doFilter(requestWrapper, response);
+        }
+    }
+
+    @Override
+    public void destroy() {
+        // no-op
+    }
+}
+

src/main/java/com/teaching/backend/filter/ValidateParams.java

@@ -0,0 +1,13 @@
+package com.teaching.backend.filter;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ValidateParams {
+    String[] value(); // 要校验的参数名称
+}
+

src/main/java/com/teaching/backend/filter/ValidationInterceptor.java

@@ -0,0 +1,83 @@
+package com.teaching.backend.filter;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.web.method.HandlerMethod;
+import org.springframework.web.servlet.HandlerInterceptor;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.util.HashMap;
+import java.util.Map;
+
+@Component
+public class ValidationInterceptor implements HandlerInterceptor {
+
+    @Autowired
+    private ObjectMapper objectMapper;
+
+    @Override
+    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        if (handler instanceof HandlerMethod) {
+            HandlerMethod handlerMethod = (HandlerMethod) handler;
+            Method method = handlerMethod.getMethod();
+            ValidateParams validateParams = method.getAnnotation(ValidateParams.class);
+
+            if (validateParams != null) {
+                Map<String, Object> parameterMap = new HashMap<>();
+
+                // 处理路径变量
+                parameterMap.putAll(getPathVariableValues(request, handlerMethod));
+
+                // 处理请求参数
+                parameterMap.putAll(getRequestParamValues(request));
+
+                // 处理请求体中的参数
+                if ("POST".equalsIgnoreCase(request.getMethod()) || "PUT".equalsIgnoreCase(request.getMethod())) {
+                    Map<String, Object> bodyParams = objectMapper.readValue(request.getInputStream(), Map.class);
+                    parameterMap.putAll(bodyParams);
+                }
+
+                for (String paramName : validateParams.value()) {
+                    Object paramValue = parameterMap.get(paramName);
+
+                    if (paramValue == null || (paramValue instanceof String && ((String) paramValue).trim().isEmpty())) {
+                        handleErrorResponse(response, paramName + " 参数不能为空");
+                        return false;
+                    }
+                }
+            }
+        }
+        return true;
+    }
+
+    private Map<String, Object> getPathVariableValues(HttpServletRequest request, HandlerMethod handlerMethod) {
+        Map<String, Object> pathVariableValues = new HashMap<>();
+        Map<String, String> uriTemplateVars = (Map<String, String>) request.getAttribute("org.springframework.web.servlet.HandlerMapping.uriTemplateVariables");
+        if (uriTemplateVars != null) {
+            pathVariableValues.putAll(uriTemplateVars);
+        }
+        return pathVariableValues;
+    }
+
+    private Map<String, Object> getRequestParamValues(HttpServletRequest request) {
+        Map<String, Object> requestParamValues = new HashMap<>();
+        Map<String, String[]> paramMap = request.getParameterMap();
+        for (Map.Entry<String, String[]> entry : paramMap.entrySet()) {
+            if (entry.getValue() != null && entry.getValue().length > 0) {
+                requestParamValues.put(entry.getKey(), entry.getValue()[0]);
+            } else {
+                requestParamValues.put(entry.getKey(), null);
+            }
+        }
+        return requestParamValues;
+    }
+
+    private void handleErrorResponse(HttpServletResponse response, String errorMessage) throws IOException {
+        response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
+        response.setContentType("application/json;charset=UTF-8");
+        response.getWriter().write("{\"error\": \"" + errorMessage + "\"}");
+    }
+}

src/main/java/com/teaching/backend/model/dto/courses/CoursesDTO.java

@@ -28,7 +28,7 @@ public class CoursesDTO {
     /**
      * 课程封面
      */
-    @ApiModelProperty("图片")
+    @ApiModelProperty(value = "图片",required = true)
     private String img;
 
     /**

src/main/java/com/teaching/backend/model/entity/courses/CourseObjectives.java

@@ -39,8 +39,6 @@ public class CourseObjectives implements Serializable {
     @ApiModelProperty(value = "是否有子节点")
     private Integer hasChild;
 
-    @ApiModelProperty(value = "目标名称")
-    private String name;
 
     @ApiModelProperty(value = "目标类型")
     private Integer type;

src/main/java/com/teaching/backend/model/vo/courses/CourseObjectivesTreeVO.java

@@ -13,6 +13,10 @@ import java.util.List;
 @ApiModel(description = "课程目标参数实体")
 public class CourseObjectivesTreeVO extends CourseObjectives implements Serializable {
 
+
+    @ApiModelProperty(value = "目标名称")
+    private String name;
+
     @ApiModelProperty(value = "目标内容列表")
     private List<ObjectiveContents> contents;
 

src/main/java/com/teaching/backend/service/impl/courses/CourseObjectivesServiceImpl.java

@@ -8,6 +8,7 @@ import com.teaching.backend.exception.BusinessException;
 import com.teaching.backend.mapper.courses.CourseObjectivesMapper;
 import com.teaching.backend.mapper.courses.ObjectiveContentKnowMapper;
 import com.teaching.backend.mapper.courses.ObjectiveContentsMapper;
+import com.teaching.backend.mapper.courses.ObjectivesTypeMapper;
 import com.teaching.backend.model.dto.courses.CourseObjectivesDTO;
 import com.teaching.backend.model.entity.courses.CourseObjectives;
 import com.teaching.backend.model.entity.courses.ObjectiveContentKnow;
@@ -43,6 +44,8 @@ public class CourseObjectivesServiceImpl extends ServiceImpl<CourseObjectivesMap
     ObjectiveContentsMapper objectiveContentsMapper;
     @Autowired
     ObjectiveContentKnowMapper objectiveContentKnowMapper;
+    @Autowired
+    ObjectivesTypeMapper objectivesTypeMapper;
 
     @Override
     @Transactional
@@ -51,9 +54,9 @@ public class CourseObjectivesServiceImpl extends ServiceImpl<CourseObjectivesMap
         CourseObjectives courseObjectivesNew = new CourseObjectives();
         BeanUtil.copyProperties(courseObjectivesDTO,courseObjectivesNew);
         String pid = courseObjectivesDTO.getPid();
-        if(pid.equals(null)){
+//        if(pid.equals(null)){
-            throw new BusinessException(ErrorCode.NOT_FOUND_ERROR,"pid父节点不能为空");
+//            throw new BusinessException(ErrorCode.NOT_FOUND_ERROR,"pid父节点不能为空");
-        }
+//        }
         Integer type = courseObjectivesDTO.getType();
         //判断是否已经添加过该类型的目标
         //每个类型的目标只能有一个
@@ -104,7 +107,7 @@ public class CourseObjectivesServiceImpl extends ServiceImpl<CourseObjectivesMap
             throw new BusinessException(ErrorCode.NOT_FOUND_ERROR);
         }
         Integer type = courseObjectives.getType();
-        if (type == CourseCode.Total_EXIT.getValue()){
+        if (type == CourseCode.TOTAL_OBJECTIVE_TYPE.getValue()){
             throw new BusinessException(ErrorCode.OPERATION_ERROR,"课程总目标只需清除所列内容即可！");
         }
         //TODO:等到删完内容后判断还是上来就判断？
@@ -170,6 +173,7 @@ public class CourseObjectivesServiceImpl extends ServiceImpl<CourseObjectivesMap
         List<CourseObjectivesTreeVO> objectives = courseObjectivesMapper.selectTreeNodes(courseObjectivesId);
         Map<String, CourseObjectivesTreeVO> map = new HashMap<>();
         for (CourseObjectivesTreeVO objective : objectives) {
+            objective.setName(objectivesTypeMapper.selectById(objective.getType()).getTypeName());
             map.put(objective.getId(), objective);
         }
 

src/main/java/com/teaching/backend/service/impl/courses/CoursesServiceImpl.java

@@ -81,10 +81,10 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
     @Override
     @Transactional
     public String saveCourseWithObjective(CoursesDTO coursesDTO) {
-        String teacher = coursesDTO.getTeacher();
+//        String teacher = coursesDTO.getTeacher();
-        if (teacher == null || teacher.equals("")) {
+//        if (teacher == null || teacher.equals("")) {
-            throw new BusinessException(ErrorCode.USERNAME_NOT_EXIT);
+//            throw new BusinessException(ErrorCode.USERNAME_NOT_EXIT);
-        }
+//        }
         Courses courses = new Courses();
         String courseId = UUID.randomUUID().toString().replace("-", "");
 
@@ -101,7 +101,8 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
             if (insert > 0) {
                 Courses coursesNew = coursesMapper.selectById(courseId);
                 courseObjectives.setCourseId(courseId);
-                courseObjectives.setName(coursesNew.getName() + "课程总体目标");
+                courseObjectives.setType(CourseCode.TOTAL_OBJECTIVE_TYPE.getValue());
+//                courseObjectives.setName(coursesNew.getName() + "课程总体目标");
                 int insertTotal = courseObjectivesMapper.insert(courseObjectives);
                 if (insertTotal>0){
                     CourseObjectives courseTotalObjectives = courseObjectivesMapper.selectOne
@@ -112,12 +113,14 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
                     CourseObjectives courseObjectivesF = null;
                     for (ObjectivesType objectivesType : objectivesTypes) {
                         Integer typeId = objectivesType.getId();
-                        String typeName = objectivesType.getTypeName();
+                        if (!typeId.equals(CourseCode.TOTAL_OBJECTIVE_TYPE.getValue())){
-                        courseObjectivesF = new CourseObjectives();
+//                            String typeName = objectivesType.getTypeName();
-                        courseObjectivesF.setType(typeId);
+                            courseObjectivesF = new CourseObjectives();
-                        courseObjectivesF.setName(typeName);
+                            courseObjectivesF.setType(typeId);
-                        courseObjectivesF.setPid(courseTotalObjectivesId);
+//                        courseObjectivesF.setName(typeName);
-                        courseObjectivesFList.add(courseObjectivesF);
+                            courseObjectivesF.setPid(courseTotalObjectivesId);
+                            courseObjectivesFList.add(courseObjectivesF);
+                        }
                     }
                     courseObjectivesMapper.insertBatch(courseObjectivesFList);
                     courseTotalObjectives.setHasChild(1);
@@ -133,9 +136,9 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
     @Override
     public PageDTO<CoursesVO> queryCourses(CourseQuery courseQuery) {
         String username = courseQuery.getUsername();
-        if (username == null || username.isEmpty()) {
+//        if (username == null || username.isEmpty()) {
-            throw new BusinessException(ErrorCode.USERNAME_NOT_EXIT);
+//            throw new BusinessException(ErrorCode.USERNAME_NOT_EXIT);
-        }
+//        }
 
         UmsAdmin umsAdmin = umsAdminMapper.selectOne(new LambdaQueryWrapper<UmsAdmin>()
                 .eq(UmsAdmin::getUsername, username));
@@ -220,9 +223,9 @@ public class CoursesServiceImpl extends ServiceImpl<CoursesMapper, Courses> impl
 
     @Override
     public void deleteBatchByIds(String id) {
-        if(id==null){
+//        if(id==null){
-            throw new BusinessException(ErrorCode.PARAMS_ERROR,"课程id为空");
+//            throw new BusinessException(ErrorCode.PARAMS_ERROR,"课程id为空");
-        }
+//        }
         CourseObjectives courseObjectives= courseObjectivesMapper.selectOne
                 (new LambdaQueryWrapper<CourseObjectives>().eq(CourseObjectives::getCourseId, id));
         if(courseObjectives == null){

src/main/java/com/teaching/backend/utils/CourseCode.java

@@ -9,6 +9,8 @@ public enum CourseCode {
     SI_ZHENG_EXIT(1, "思政目标存在"),
     KNOWS_EXIT(0, "存在关联的知识点"),
     TEACHER_ROLE_ID(1, "教师的角色id是1"),
+    TOTAL_OBJECTIVE_TYPE(5, "课程总目标"),
+
 
     Total_EXIT(0, "课程总目标"),
     COURSE_UODATING(1, "课程正在修改中");