1.查询所有一级分类

1.sun-club-application-controller 控制层

1.SubjectCategoryController.java 定义基础的queryPrimaryCategory，调用领域层

    @PostMapping("/queryPrimaryCategory")public Result<List<SubjectCategoryDTO>> queryPrimaryCategory() {List<SubjectCategoryBO> subjectCategoryBOList = subjectCategoryDomainService.queryPrimaryCategory();}

2.sun-club-domain 领域层

1.SubjectCategoryDomainService.java

    /*** 查询一级分类* @return*/List<SubjectCategoryBO> queryPrimaryCategory();

2.SubjectCategoryConverter.java

    // 将List<SubjectCategory>转换为List<SubjectCategoryBO>List<SubjectCategoryBO> convertSubjectCategoryToBo(List<SubjectCategory> subjectCategoryList);

3.SubjectCategoryDomainServiceImpl.java

    @Overridepublic List<SubjectCategoryBO> queryPrimaryCategory() {// 查询一级分类List<SubjectCategory> subjectCategoryList = subjectCategoryService.queryPrimaryCategory();// 将List<SubjectCategory>转换为List<SubjectCategoryBO>List<SubjectCategoryBO> subjectCategoryBOList = SubjectCategoryConverter.INSTANCE.convertSubjectCategoryToBo(subjectCategoryList);// 打印日志if (log.isInfoEnabled()) {log.info("SubjectCategoryDomainServiceImpl queryPrimaryCategory, subjectCategoryBOList:{}", JSON.toJSONString(subjectCategoryBOList));}return subjectCategoryBOList;}

3.sun-club-infra 基础设施层

1.service

1.SubjectCategoryService.java

    /*** 查询一级分类* @return*/List<SubjectCategory> queryPrimaryCategory();

2.SubjectCategoryServiceImpl.java

    /*** 查询一级分类* @return*/@Overridepublic List<SubjectCategory> queryPrimaryCategory() {return this.subjectCategoryDao.queryPrimaryCategory();}

2.mapper

1.SubjectCategoryDao.java

    /*** 查询一级分类* @return*/List<SubjectCategory> queryPrimaryCategory();

2.SubjectCategoryDao.xml

    <!--查询所有一级分类--><select id="queryPrimaryCategory" resultMap="SubjectCategoryMap">selectid, category_name, category_type, image_url, parent_id, created_by, created_time, update_by, update_timefrom subject_categorywhere parent_id = 0and is_deleted = 0</select>

4.回到sun-club-application-controller

1.SubjectCategoryDTOConverter.java

    // 将List<SubjectCategoryBO>转换为List<SubjectCategoryDTO>List<SubjectCategoryDTO> convertSubjectCategoryToDto(List<SubjectCategoryBO> subjectCategoryBOList);

2.SubjectCategoryController.java

    @PostMapping("/queryPrimaryCategory")public Result<List<SubjectCategoryDTO>> queryPrimaryCategory() {List<SubjectCategoryBO> subjectCategoryBOList = subjectCategoryDomainService.queryPrimaryCategory();// 转换BO为DTOList<SubjectCategoryDTO> subjectCategoryDTOList = SubjectCategoryDTOConverter.INSTANCE.convertSubjectCategoryToDto(subjectCategoryBOList);return Result.ok(subjectCategoryDTOList);}

3.测试

4.问题分析

• 这样写的查询语句就太死了，所以需要使用动态SQL来优化

5.使用动态SQL优化查询

1.sun-club-infra

1.SubjectCategoryDao.xml

    <!--查询所有一级分类--><select id="queryPrimaryCategory" resultMap="SubjectCategoryMap">selectid, category_name, category_type, image_url, parent_id, created_by, created_time, update_by, update_timefrom subject_category<where><if test="id != null">and id = #{id}</if><if test="categoryName != null and categoryName != ''">and category_name = #{categoryName}</if><if test="categoryType != null">and category_type = #{categoryType}</if><if test="imageUrl != null and imageUrl != ''">and image_url = #{imageUrl}</if><if test="parentId != null">and parent_id = #{parentId}</if><if test="createdBy != null and createdBy != ''">and created_by = #{createdBy}</if><if test="createdTime != null">and created_time = #{createdTime}</if><if test="updateBy != null and updateBy != ''">and update_by = #{updateBy}</if><if test="updateTime != null">and update_time = #{updateTime}</if><if test="isDeleted != null">and is_deleted = #{isDeleted}</if></where></select>

2.SubjectCategoryDao.java

    /*** 查询一级分类* @return*/List<SubjectCategory> queryPrimaryCategory(@Param("subjectCategory") SubjectCategory subjectCategory);

3.SubjectCategoryService.java

    /*** 查询一级分类* @return*/List<SubjectCategory> queryPrimaryCategory(SubjectCategory subjectCategory);

4.SubjectCategoryServiceImpl.java

    /*** 查询一级分类* @return*/@Overridepublic List<SubjectCategory> queryPrimaryCategory(SubjectCategory subjectCategory) {return this.subjectCategoryDao.queryPrimaryCategory(subjectCategory);}

2.sun-club-domain

1.SubjectCategoryDomainServiceImpl.java

2.测试

2.根据分类id查二级分类

1.sun-club-application-controller

1.SubjectCategoryController.java

    /*** 根据id查询二级分类* @param subjectCategoryDTO* @return*/@PostMapping("/queryCategoryByPrimary")public Result<List<SubjectCategoryDTO>> queryCategoryByPrimary(@RequestBody SubjectCategoryDTO subjectCategoryDTO) {try {// 打日志if (log.isInfoEnabled()) {log.info("SubjectCategoryController queryCategoryByPrimary SubjectCategoryDTO, subjectCategoryDTO:{}", JSON.toJSONString(subjectCategoryDTO));}// 参数校验Preconditions.checkNotNull(subjectCategoryDTO.getParentId(), "分类id不能为空");// 转换DTO为BOSubjectCategoryBO subjectCategoryBO = SubjectCategoryDTOConverter.INSTANCE.convertDTOToSubjectCategory(subjectCategoryDTO);// 查询二级分类List<SubjectCategoryBO> subjectCategoryBOList = subjectCategoryDomainService.queryCategory(subjectCategoryBO);// 转换BO为DTOList<SubjectCategoryDTO> subjectCategoryDTOList = SubjectCategoryDTOConverter.INSTANCE.convertSubjectCategoryToDto(subjectCategoryBOList);return Result.ok(subjectCategoryDTOList);} catch (Exception e) {// 记录日志log.error("SubjectCategoryController queryPrimaryCategory error:{}", e.getMessage(), e);return Result.fail("查询一级分类失败");}}

2.修改所有queryPrimaryCategory为queryCategory

3.修改动态sql，使其可以只查询出未逻辑删除的记录

3.分类模块接口开发

1.接口设计

2.sun-club-application-controller

1.SubjectCategoryController.java

    /*** 更新分类* @param subjectCategoryDTO* @return*/@PostMapping("/update")public Result<Boolean> update(@RequestBody SubjectCategoryDTO subjectCategoryDTO) {try {if (log.isInfoEnabled()) {log.info("SubjectCategoryController update SubjectCategoryDTO, subjectCategoryDTO:{}", JSON.toJSONString(subjectCategoryDTO));}// 参数校验Preconditions.checkNotNull(subjectCategoryDTO.getId(), "分类id不能为空");// 转换DTO为BOSubjectCategoryBO subjectCategoryBO = SubjectCategoryDTOConverter.INSTANCE.convertDTOToSubjectCategory(subjectCategoryDTO);Boolean result =  subjectCategoryDomainService.update(subjectCategoryBO);return Result.ok(result);} catch (Exception e) {log.error("SubjectCategoryController update error:{}", e.getMessage(), e);return Result.fail("更新分类失败");}}

3.sun-club-domain

1.SubjectCategoryDomainService.java

    /*** 更新分类* @param subjectCategoryBO* @return*/Boolean update(SubjectCategoryBO subjectCategoryBO);

2.SubjectCategoryDomainServiceImpl.java

    @Overridepublic Boolean update(SubjectCategoryBO subjectCategoryBO) {if (log.isInfoEnabled()) {log.info("SubjectCategoryDomainServiceImpl update SubjectCategoryBO, SubjectCategoryBO:{}", JSON.toJSONString(subjectCategoryBO));}SubjectCategory subjectCategory = SubjectCategoryConverter.INSTANCE.convertBoToSubjectCategory(subjectCategoryBO);int update = subjectCategoryService.update(subjectCategory);return update > 0;}

4.sun-club-infra

1.SubjectCategoryService.java

    /*** 修改数据** @param subjectCategory 实例对象* @return 实例对象*/int update(SubjectCategory subjectCategory);

2.SubjectCategoryServiceImpl.java

    /*** 修改数据** @param subjectCategory 实例对象* @return 实例对象*/@Overridepublic int update(SubjectCategory subjectCategory) {return this.subjectCategoryDao.update(subjectCategory);}

3.SubjectCategoryDao.java

    /*** 修改数据** @param subjectCategory 实例对象* @return 影响行数*/int update(SubjectCategory subjectCategory);

4.SubjectCategoryDao.xml

    <!--通过主键修改数据--><update id="update">update subject_category<set><if test="categoryName != null and categoryName != ''">category_name = #{categoryName},</if><if test="categoryType != null">category_type = #{categoryType},</if><if test="imageUrl != null and imageUrl != ''">image_url = #{imageUrl},</if><if test="parentId != null">parent_id = #{parentId},</if><if test="createdBy != null and createdBy != ''">created_by = #{createdBy},</if><if test="createdTime != null">created_time = #{createdTime},</if><if test="updateBy != null and updateBy != ''">update_by = #{updateBy},</if><if test="updateTime != null">update_time = #{updateTime},</if><if test="isDeleted != null">is_deleted = #{isDeleted},</if></set>where id = #{id}</update>

5.启动测试

4.删除分类接口开发

1.基本设计

2.sun-club-application-controller

1.SubjectCategoryController.java

    /*** 删除分类* @param subjectCategoryDTO* @return*/@PostMapping("/delete")public Result<Boolean> delete(@RequestBody SubjectCategoryDTO subjectCategoryDTO) {try {if (log.isInfoEnabled()) {log.info("SubjectCategoryController delete SubjectCategoryDTO, subjectCategoryDTO:{}", JSON.toJSONString(subjectCategoryDTO));}// 参数校验Preconditions.checkNotNull(subjectCategoryDTO.getId(), "分类id不能为空");// 转换DTO为BOSubjectCategoryBO subjectCategoryBO = SubjectCategoryDTOConverter.INSTANCE.convertDTOToSubjectCategory(subjectCategoryDTO);Boolean result =  subjectCategoryDomainService.delete(subjectCategoryBO);return Result.ok(result);} catch (Exception e) {log.error("SubjectCategoryController delete error:{}", e.getMessage(), e);return Result.fail("删除分类失败");}}

3.sun-club-common

1.IsDeleteFlagEnum.java

package com.sunxiansheng.subject.common.enums;import lombok.Getter;/*** Description: 删除标识枚举* @Author sun* @Create 2024/5/24 9:53* @Version 1.0*/
@Getter
public enum IsDeleteFlagEnum {DELETED(1, "已删除"),UN_DELETED(0, "未删除");public int code;public String desc;IsDeleteFlagEnum(int code, String desc) {this.code = code;this.desc = desc;}/*** 根据code获取枚举* @param code* @return*/public static IsDeleteFlagEnum getByCode(int code) {for (IsDeleteFlagEnum value : values()) {if (value.code == code) {return value;}}return null;}
}

4.sun-club-domain

1.SubjectCategoryDomainService.java

    /*** 删除分类* @param subjectCategoryBO* @return*/Boolean delete(SubjectCategoryBO subjectCategoryBO);

2.SubjectCategoryDomainServiceImpl.java

    @Overridepublic Boolean delete(SubjectCategoryBO subjectCategoryBO) {if (log.isInfoEnabled()) {log.info("SubjectCategoryDomainServiceImpl delete SubjectCategoryBO, SubjectCategoryBO:{}", JSON.toJSONString(subjectCategoryBO));}SubjectCategory subjectCategory = SubjectCategoryConverter.INSTANCE.convertBoToSubjectCategory(subjectCategoryBO);// 逻辑删除subjectCategory.setIsDeleted(1);int update = subjectCategoryService.update(subjectCategory);return update > 0;}

3.测试

5.分类接口总览

1.使用commons-lang3进行开发

1.sun-club-common引入依赖

        <!-- commons-lang3 --><dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><version>3.11</version></dependency>

2.SubjectCategoryController.java使用isBlank进行校验

2.SubjectCategoryDomainServiceImpl.java 插入时设置逻辑删除

3.查询一级分类

1.SubjectCategoryDao.xml，添加逻辑删除字段

2.sun-club-common添加分类的枚举CategoryTypeEnum.java

package com.sunxiansheng.subject.common.enums;import lombok.Getter;/*** Description: 删除标识枚举* @Author sun* @Create 2024/5/24 9:53* @Version 1.0*/
@Getter
public enum CategoryTypeEnum {PRIMARY(1, "岗位大类"),SECOND(2, "二级分类");public int code;public String desc;CategoryTypeEnum(int code, String desc) {this.code = code;this.desc = desc;}/*** 根据code获取枚举* @param code* @return*/public static CategoryTypeEnum getByCode(int code) {for (CategoryTypeEnum value : values()) {if (value.code == code) {return value;}}return null;}
}

3.SubjectCategoryDomainServiceImpl.java查询未删除字段

4.SubjectCategoryController.java修改查询一级分类逻辑，使其传入category_type

5.修改接口

6.重启测试

4.查询二级分类

1.修改接口