教育项目--讲师模块【5】

矫情吗；* 2023-10-05 17:41 56阅读 0赞

#### 讲师模块 ####

*   *  1.数据库设计
     *  2.项目中配置数据源信息
     *  3.配置Mybatis-Plus代码生成器
     *  4.项目结构
     *  5.创建启动类
     *  6.创建Mapper扫描工具类
     *  7.查删操作
     *   *  RESTFUL风格
     *  8.分页查
     *   *  1.分页插件
         *  2.分页
         *  3.测试
     *  9.分页条件查
     *  10.新增
     *   *  10.1.自动填充
         *  10.2.自动填充配置类
     *  11.修改
     *   *  11.1.先根据讲师ID进行查询
         *  11.2.根据讲师ID进行修改

### 1.数据库设计 ###

#
    # Structure for table "edu_teacher"
    #
    
    CREATE TABLE `edu_teacher` (
      `id` char(19) NOT NULL COMMENT '讲师ID',
      `name` varchar(20) NOT NULL COMMENT '讲师姓名',
      `intro` varchar(500) NOT NULL DEFAULT '' COMMENT '讲师简介',
      `career` varchar(500) DEFAULT NULL COMMENT '讲师资历,一句话说明讲师',
      `level` int(10) unsigned NOT NULL COMMENT '头衔 1高级讲师 2首席讲师',
      `avatar` varchar(255) DEFAULT NULL COMMENT '讲师头像',
      `sort` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '排序',
      `is_deleted` tinyint(1) unsigned NOT NULL DEFAULT '0' COMMENT '逻辑删除 1（true）已删除， 0（false）未删除',
      `gmt_create` datetime NOT NULL COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL COMMENT '更新时间',
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_name` (`name`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='讲师';
    
    #
    # Data for table "edu_teacher"
    #
    
    INSERT INTO `edu_teacher` VALUES ('1','张三','近年主持国家自然科学基金（6项）、江苏省重大科技成果转化项目（5项）、江苏省产学研前瞻性联合研究项目（3项）、省工业科技支撑、省高技术、省自然科学基金等省部级及其企业的主要科研项目40多个，多个项目在企业成功转化，产生了较好的经济、社会和环境效益。积极开展产学研科技合作，并与省内16家企业建立了江苏省研究生工作站，其中6家为江苏省优秀研究生工作站','高级',1,'https://guli-file-190513.oss-cn-beijing.aliyuncs.com/avatar/default.jpg',0,0,'2019-10-30 14:18:46','2019-11-12 13:36:36'),('1189389726308478977','晴天','高级讲师简介','高级讲师资历',2,'https://online-teach-file.oss-cn-beijing.aliyuncs.com/teacher/2019/10/30/de47ee9b-7fec-43c5-8173-13c5f7f689b2.png',1,0,'2019-10-30 11:53:03','2019-10-30 11:53:03'),('1189390295668469762','李刚','高级讲师简介','高级讲师',2,'https://online-teach-file.oss-cn-beijing.aliyuncs.com/teacher/2019/10/30/b8aa36a2-db50-4eca-a6e3-cc6e608355e0.png',2,0,'2019-10-30 11:55:19','2019-11-12 13:37:52'),('1189426437876985857','王二','高级讲师简介','高级讲师',1,'https://online-teach-file.oss-cn-beijing.aliyuncs.com/teacher/2019/11/08/e44a2e92-2421-4ea3-bb49-46f2ec96ef88.png',0,0,'2019-10-30 14:18:56','2019-11-12 13:37:35'),('1189426464967995393','王五','高级讲师简介','高级讲师',1,'https://online-teach-file.oss-cn-beijing.aliyuncs.com/teacher/2019/10/30/65423f14-49a9-4092-baf5-6d0ef9686a85.png',0,0,'2019-10-30 14:19:02','2019-11-12 13:37:18'),('1192249914833055746','李四','高级讲师简介','高级讲师',1,'https://online-teach-file.oss-cn-beijing.aliyuncs.com/teacher/2019/11/07/91871e25-fd83-4af6-845f-ea8d471d825d.png',0,0,'2019-11-07 09:18:25','2019-11-12 13:37:01'),('1192327476087115778','1222-12-12','1111','11',1,'https://online-teach-file.oss-cn-beijing.aliyuncs.com/teacher/2019/11/08/5805c6cd-c8ad-4a77-aafd-d2e083bfd8a4.png',0,1,'2019-11-07 14:26:37','2019-11-11 16:26:26'),('1195337453429129218','test','sdfsdf','sdfdf',1,'https://guli-file-190513.oss-cn-beijing.aliyuncs.com/avatar/default.jpg',0,1,'2019-11-15 21:47:12','2019-11-15 21:47:27');

![讲师模块的数据库设计][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0phdmFiYWliYWk_size_16_color_FFFFFF_t_70]

### 2.项目中配置数据源信息 ###

application.properties文件

# 服务端口
    server.port=8001
    # 服务名
    spring.application.name=service-edu
    
    # 环境设置：dev、test、prod
    spring.profiles.active=dev
    
    # mysql数据库连接
    spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
    spring.datasource.url=jdbc:mysql://localhost:3306/onlineducation?serverTimezone=GMT%2B8
    spring.datasource.username=root
    spring.datasource.password=123456
    
    #mybatis日志
    mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

### 3.配置Mybatis-Plus代码生成器 ###

`MyBatis_Plus_Util`文件

package com.atguigu.demo;
    
    import com.baomidou.mybatisplus.annotation.DbType;
    import com.baomidou.mybatisplus.annotation.IdType;
    import com.baomidou.mybatisplus.generator.AutoGenerator;
    import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
    import com.baomidou.mybatisplus.generator.config.GlobalConfig;
    import com.baomidou.mybatisplus.generator.config.PackageConfig;
    import com.baomidou.mybatisplus.generator.config.StrategyConfig;
    import com.baomidou.mybatisplus.generator.config.rules.DateType;
    import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
    import org.junit.Test;
    
    /**
     * @author 
     * @since
     */
    public class MyBatis_Plus_Util {
        
    
        @Test
        public void run() {
        
    
            // 1、创建代码生成器
            AutoGenerator mpg = new AutoGenerator();
    
            // 2、全局配置
            GlobalConfig gc = new GlobalConfig();
            String projectPath = System.getProperty("user.dir");
            gc.setOutputDir("C:\\Users\\lenovo\\Desktop\\项目源码\\day02\\guli_parent\\service\\service_edu" + "/src/main/java");
    
            gc.setAuthor("taotao");
            gc.setOpen(false); //生成后是否打开资源管理器
            gc.setFileOverride(false); //重新生成时文件是否覆盖
    
            //UserServie
            gc.setServiceName("%sService");	//去掉Service接口的首字母I
    
            gc.setIdType(IdType.ID_WORKER_STR); //主键策略
            gc.setDateType(DateType.ONLY_DATE);//定义生成的实体类中日期类型
            gc.setSwagger2(true);//开启Swagger2模式
    
            mpg.setGlobalConfig(gc);
    
            // 3、数据源配置
            DataSourceConfig dsc = new DataSourceConfig();
            dsc.setUrl("jdbc:mysql://localhost:3306/onlineeducation?serverTimezone=GMT%2B8");
            dsc.setDriverName("com.mysql.cj.jdbc.Driver");
            dsc.setUsername("root");
            dsc.setPassword("123456");
            dsc.setDbType(DbType.MYSQL);
            mpg.setDataSource(dsc);
    
            // 4、包配置
            PackageConfig pc = new PackageConfig();
            pc.setModuleName("eduservice"); //模块名
            //包  com.drj.eduservice
            pc.setParent("com.drj");
            //包  com.drj.eduservice.controller
            pc.setController("controller");
            pc.setEntity("entity");
            pc.setService("service");
            pc.setMapper("mapper");
            mpg.setPackageInfo(pc);
    
            // 5、策略配置
            StrategyConfig strategy = new StrategyConfig();
    
            strategy.setInclude("edu_teacher");
    
            strategy.setNaming(NamingStrategy.underline_to_camel);//数据库表映射到实体的命名策略
            strategy.setTablePrefix(pc.getModuleName() + "_"); //生成实体时去掉表前缀
    
            strategy.setColumnNaming(NamingStrategy.underline_to_camel);//数据库表字段映射到实体的命名策略
            strategy.setEntityLombokModel(true); // lombok 模型 @Accessors(chain = true) setter链式操作
    
            strategy.setRestControllerStyle(true); //restful api风格控制器
            strategy.setControllerMappingHyphenStyle(true); //url中驼峰转连字符
    
            mpg.setStrategy(strategy);
    
    
            // 6、执行
            mpg.execute();
        }
    }

### 4.项目结构 ###

![讲师模块的项目结构][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0phdmFiYWliYWk_size_16_color_FFFFFF_t_70 1]

### 5.创建启动类 ###

package com.drj.eduservice;
    	
    	import org.springframework.boot.SpringApplication;
    	import org.springframework.boot.autoconfigure.SpringBootApplication;
    	
    	/**
    	 * @Program: guli_parent
    	 * @Description
    	 * @Author: 涛涛 * ^ *
    	 * @Create: 2021-01-14 23:40
    	 **/
    	@SpringBootApplication
    	public class EduApplication {
        
    	    public static void main(String[] args) {
        
    	        SpringApplication.run(EduApplication.class, args);
    	    }
    	}

### 6.创建Mapper扫描工具类 ###

package com.drj.eduservice.config;
    	
    	import org.mybatis.spring.annotation.MapperScan;
    	import org.springframework.context.annotation.Configuration;
    	
    	/**
    	 * @Program: guli_parent
    	 * @Description
    	 * @Author: 涛涛 * ^ *
    	 * @Create: 2021-01-14 23:43
    	 **/
    	@Configuration
    	@MapperScan("com.drj.eduservice.mapper")
    	public class EduConfig {
        
    	    
    	}

### 7.查删操作 ###

#### RESTFUL风格 ####

<table> 
 <thead> 
  <tr> 
   <th>方法</th> 
   <th>注解</th> 
   <th>方法名</th> 
   <th>请求方式</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>查全部</td> 
   <td>@GetMapping</td> 
   <td>getAllXXX</td> 
   <td>GET</td> 
  </tr> 
  <tr> 
   <td>查单个</td> 
   <td>@GetMapping</td> 
   <td>getOne{}</td> 
   <td>GET{ID}</td> 
  </tr> 
  <tr> 
   <td>删除</td> 
   <td>@DeleteMapping</td> 
   <td>removeById{}</td> 
   <td>DELETE{ID}</td> 
  </tr> 
  <tr> 
   <td>添加</td> 
   <td>@PostMapping</td> 
   <td>insert</td> 
   <td>POST</td> 
  </tr> 
  <tr> 
   <td>修改</td> 
   <td>@PutMapping</td> 
   <td>update{}</td> 
   <td>PUT{ID}</td> 
  </tr> 
 </tbody> 
</table>

package com.drj.eduservice.controller;
    
    
    import com.drj.commonutils.R;
    import com.drj.eduservice.entity.EduTeacher;
    import com.drj.eduservice.service.EduTeacherService;
    import io.swagger.annotations.Api;
    import io.swagger.annotations.ApiOperation;
    import io.swagger.annotations.ApiParam;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.*;
    
    import java.util.List;
    
    /**
     * <p>
     * 讲师 前端控制器
     * </p>
     *
     * @author taotao
     * @since 2021-01-14
     */
    @Api(description = "讲师模块")
    @RestController
    @RequestMapping("/eduservice/edu-teacher")
    public class EduTeacherController {
        
    
        @Autowired
        EduTeacherService eduTeacherService;
    
        /**
         * 获取全部的讲师信息
         *
         * @return 讲师信息的List集合
         */
        @ApiOperation(value = "获取全部")
        @GetMapping("/getAllTeacher")
        public R getAllTeacher() {
        
    
              return R.ok()
                    .data("teacherList", eduTeacherService.list(null))
                    .data("total",eduTeacherService.list(null).size());
        }
    
        /**
         * 获取单个的讲师信息
         *
         * @param id 主键
         * @return 讲师信息
         */
        @ApiOperation(value = "获取单个")
        @GetMapping("{id}")
        public R getOneTeacher(
                @ApiParam(name = "ID", value = "讲师ID", required = true)
                @PathVariable String id) {
        
    
            return R.ok().data("teacherOne", eduTeacherService.getById(id));
        }
    
        /**
         * 删除单个
         * 步骤：
         * 1.添加逻辑删除的配置
         * 2.实体类中的逻辑删除的isDeleted属性添加@TableLogic注解
         *
         * @param id 主键
         * @return 是否删除成功
         */
        @ApiOperation(value = "L删除单个")
        @DeleteMapping("{id}")
        public R removeById(
                @ApiParam(name = "ID", value = "讲师ID", required = true)
                @PathVariable String id) {
        
            if (eduTeacherService.removeById(id)) {
        
                return R.ok();
            }
            return R.error();
        }
    
    }

讲师模块呢整体来说是很简单的，这里用来测试环境，以及配置一些别的集成测试使用

### 8.分页查 ###

#### 1.分页插件 ####

/**
         * 分页插件
         */
        @Bean
        public PaginationInterceptor paginationInterceptor() {
        
            return new PaginationInterceptor();
        }

#### 2.分页 ####

@ApiOperation(value = "分页讲师列表")
        @GetMapping("{page}/{limit}")
        public R pageList(
                @ApiParam(name = "page", value = "当前页码", required = true)
                @PathVariable Long page,
    
                @ApiParam(name = "limit", value = "每页记录数", required = true)
                @PathVariable Long limit){
        
    
            Page<EduTeacher> pageParam = new Page<>(page, limit);
    
            eduTeacherService.page(pageParam, null);
            List<EduTeacher> records = pageParam.getRecords();
            long total = pageParam.getTotal();
    
            return  R.ok().data("total", total).data("rows", records);
        }

#### 3.测试 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0phdmFiYWliYWk_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0phdmFiYWliYWk_size_16_color_FFFFFF_t_70 3]

### 9.分页条件查 ###

@ApiOperation(value = "分页条件讲师列表")
        @PostMapping("/PaginationCondition/{page}/{limit}")
        public R pageQuery(
                @ApiParam(name = "page", value = "当前页码", required = true)
                @PathVariable  Long page,
    
                @ApiParam(name = "limit", value = "每页记录数", required = true)
                @PathVariable  Long limit,
    
                @ApiParam(name = "eduTeacherVO", value = "查询对象", required = false)
                @RequestBody(required = false)  EduTeacherVO eduTeacherVO) {
        
    
            //创建Page对象
            Page<EduTeacher> eduTeacherPage = new Page<>(page, limit);
            System.out.println(page);
            System.out.println(limit);
            //构建条件
            QueryWrapper<EduTeacher> eduTeacherQueryWrapper = new QueryWrapper<>();
            //获取结果
            String begin = eduTeacherVO.getBegin();
            String end = eduTeacherVO.getEnd();
            Integer level = eduTeacherVO.getLevel();
            String name = eduTeacherVO.getName();
            //判断非空
            if(!StringUtils.isEmpty(name)){
        
                eduTeacherQueryWrapper.like("name",name);
            }
            if(!StringUtils.isEmpty(level)){
        
                eduTeacherQueryWrapper.eq("level",level);
            }
            if(!StringUtils.isEmpty(begin)){
        
                eduTeacherQueryWrapper.ge("gmt_create",begin);
            }
            if(!StringUtils.isEmpty(end)){
        
                eduTeacherQueryWrapper.le("gmt_modified",end);
            }
            eduTeacherService.page(eduTeacherPage, eduTeacherQueryWrapper);
    
            long total = eduTeacherPage.getTotal();
            List<EduTeacher> records = eduTeacherPage.getRecords();
            return R.ok()
                    .data("total", total)
                    .data("items", records);
    
        }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0phdmFiYWliYWk_size_16_color_FFFFFF_t_70 4]

### 10.新增 ###

#### 10.1.自动填充 ####

@ApiModelProperty(value = "创建时间")
        @TableField(fill = FieldFill.INSERT)
        private Date gmtCreate;
    
        @ApiModelProperty(value = "更新时间")
        @TableField(fill = FieldFill.INSERT_UPDATE)
        private Date gmtModified;

#### 10.2.自动填充配置类 ####

package com.drj.servicebase.handler;
    
    import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
    import org.apache.ibatis.reflection.MetaObject;
    import org.springframework.stereotype.Component;
    
    import java.util.Date;
    
    /**
     * 自动填充配置类
     */
    @Component
    public class MyMetaObjectHandler implements MetaObjectHandler {
        
        @Override
        public void insertFill(MetaObject metaObject) {
        
            //属性名称，不是字段名称
            this.setFieldValByName("gmtCreate", new Date(), metaObject);
            this.setFieldValByName("gmtModified", new Date(), metaObject);
        }
    
        @Override
        public void updateFill(MetaObject metaObject) {
        
            this.setFieldValByName("gmtModified", new Date(), metaObject);
        }
    }

**controller的新增方法**

/**
         * 添加讲师
         * @param eduTeacher
         * @return
         */
        @ApiOperation(value = "新增讲师")
        @PostMapping()
        public R insertTeacher(
                @ApiParam(name = "eduTeacher", value = "讲师对象", required = false)
                @RequestBody EduTeacher eduTeacher) {
        
            if (eduTeacherService.save(eduTeacher)) {
        
                return R.ok();
            }
            return R.error();
        }

**测试数据**

{
        
      "avatar": "https://online-teach-file.oss-cn-beijing.aliyuncs.com/teacher/2019/11/08/5805c6cd-c8ad-4a77-aafd-d2e083bfd8a4.png",
      "career": "高级讲师",
      "intro": "高级讲师简介",
      "isDeleted": 0,
      "level": 0,
      "name": "清流02",
      "sort": 0
    }

### 11.修改 ###

#### 11.1.先根据讲师ID进行查询 ####

/**
         * 获取单个的讲师信息
         *
         * @param id 主键
         * @return 讲师信息
         */
        @ApiOperation(value = "获取单个")
        @GetMapping("{id}")
        public R getOneTeacher(
                @ApiParam(name = "ID", value = "讲师ID", required = true)
                @PathVariable String id) {
        
    
            return R.ok().data("teacherOne", eduTeacherService.getById(id));
        }

#### 11.2.根据讲师ID进行修改 ####

/**
         * 修改讲师信息
         *
         * @param eduTeacher
         * @return
         */
        @ApiOperation(value = "ID修改讲师")
        @PutMapping("{id}")
        public R updateTeacher(
                @ApiParam(name = "id", value = "讲师ID", required = false)
                @PathVariable String id,
                @ApiParam(name = "eduTeacher", value = "讲师对象", required = false)
                @RequestBody EduTeacher eduTeacher) {
        
    
            eduTeacher.setId(id);
            if (eduTeacherService.updateById(eduTeacher)) {
        
                return R.ok();
            }
            return R.error();
        }

测试  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0phdmFiYWliYWk_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][20210115132724970.png]

讲师模块呢，整体的一个模块内的功能是一下的内容  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0phdmFiYWliYWk_size_16_color_FFFFFF_t_70 6]

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