二、讲师管理接口开发总结

news2024/12/23 9:36:42

首先本项目将实体类单独放在model包中，方便后期集体的调用：

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整个项目的建包结构都是在java包中建立com.lxl.ggkt包，方便后期包路径的扫描。

上述有三个包：

enums包规定了一些状态规定，比如优惠券是否使用，规定code=0为未使用，code=1为使用等等，这些不展开说明。

model则为对应的实体类。

vo是对数据的封装，往往前端需要我们返回对应数据的集合，这样就需要对得到的数据进行集合封装。

vod最终配置文件如下：

server.port=8301

spring.application.name=service-vod


spring.profiles.active=dev

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/glkt_vod?characterEncoding=utf-8&useSSL=false
spring.datasource.username=root
spring.datasource.password=123456lxl


spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8


mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

spring.servlet.multipart.max-file-size=1024MB
spring.servlet.multipart.max-request-size=1024MB

tencent.cos.file.region=ap-beijing
tencent.cos.file.secretid=AKIDQjskRxPgs1HPNl0LSM3c2GF3jGbkiXCh
tencent.cos.file.secretkey=TsBVoARdensvvqlfVI2ueJwjP1a3Tl07

tencent.cos.file.bucketname=ggkt-1312247070

tencent.video.appid=1312247070

mybatis-plus.mapper-locations=classpath:com/lxl/ggkt/vod/mapper/xml/*.xml

spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848

TeacherController:

主要涉及到查询所有讲师，删除讲师信息，条件分页查询讲师信息，增加讲师信息，修改讲师信息，批量删除讲师信息。

package com.lxl.ggkt.vod.controller;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.lxl.ggkt.exception.GgktException;
import com.lxl.ggkt.model.vod.Teacher;
import com.lxl.ggkt.result.Result;
import com.lxl.ggkt.vo.vod.TeacherQueryVo;
import com.lxl.ggkt.vod.service.TeacherService;
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.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author lxl
 * @since 2022-07-16
 */
@Api(tags = "讲师管理接口")
@RestController
@RequestMapping("/admin/vod/teacher")
//@CrossOrigin
public class TeacherController {

    @Autowired
    private TeacherService teacherService;

    //查询所有讲师
//    @ApiOperation("查询所有讲师")
//    @GetMapping("findAll")
//    public List<Teacher> findAllTeacher(){
//        List<Teacher> list = teacherService.list();
//        return list;
//    }

    @ApiOperation("查询所有讲师")
    @GetMapping("findAll")
    public Result findAllTeacher() {
//        try{
//            int i = 10/0;
//        }catch (Exception e){
//            throw new GgktException(201,"执行了自定义异常处理GgktException");
//        }

        List<Teacher> list = teacherService.list();
        return Result.ok(list).message("查询数据成功");
    }

    //删除讲师
    @ApiOperation("逻辑删除讲师")
    @DeleteMapping("remove/{id}")
    public Result removeTeacher(@ApiParam(name = "id", value = "ID", required = true) @PathVariable Long id){
        boolean isSuccess = teacherService.removeById(id);
        if (isSuccess){
            return Result.ok(null);
        }else{
            return Result.fail(null);
        }
    }

    //条件查询分页
    @ApiOperation("条件查询分页")
    @PostMapping("findQueryPage/{current}/{limit}")
    public Result findPage(@PathVariable long current,
                           @PathVariable long limit,
                           @RequestBody(required = false) TeacherQueryVo teacherQueryVo){

        Page<Teacher> pageParam = new Page<>(current, limit);

        if (teacherQueryVo == null){
            IPage<Teacher> pageModel = teacherService.page(pageParam,null);
            return Result.ok(pageModel);
        }else{
            String name = teacherQueryVo.getName();
            Integer level = teacherQueryVo.getLevel();
            String joinDateBegin = teacherQueryVo.getJoinDateBegin();
            String joinDateEnd = teacherQueryVo.getJoinDateEnd();

            QueryWrapper<Teacher> wrapper = new QueryWrapper<>();
            if (!StringUtils.isEmpty(name)){
                wrapper.like("name",name);
            }
            if (!StringUtils.isEmpty(level)){
                wrapper.like("level",level);
            }
            if (!StringUtils.isEmpty(joinDateBegin)){
                wrapper.ge("join_date",joinDateBegin);
            }
            if (!StringUtils.isEmpty(joinDateEnd)){
                wrapper.le("join_date",joinDateEnd);
            }

            IPage<Teacher> pageModel = teacherService.page(pageParam, wrapper);

            return Result.ok(pageModel);
        }
    }

    //增加讲师
    @ApiOperation("增加讲师")
    @PostMapping("saveTeacher")
    public Result saveTeacher(@RequestBody Teacher teacher){
        boolean isSuccess = teacherService.save(teacher);
        if (isSuccess){
            return Result.ok(null);
        }else{
            return Result.fail(null);
        }
    }


    //修改讲师
    @ApiOperation("根据id查询")
    @GetMapping("getTeacher/{id}")
    public Result getTeacher(@PathVariable Long id){
        Teacher teacher = teacherService.getById(id);
        return Result.ok(teacher);
    }

    @ApiOperation("修改最终实现")
    @PostMapping("updateTeacher")
    public Result updateTeacher(@RequestBody Teacher teacher){
        boolean isSuccess = teacherService.updateById(teacher);
        if (isSuccess){
            return Result.ok(null);
        }else{
            return Result.fail(null);
        }
    }

    //批量删除讲师
    @ApiOperation("批量删除讲师")
    @DeleteMapping("removeBatch")
    public Result removeBatch(@RequestBody List<Long> idList){
        boolean isSuccess = teacherService.removeByIds(idList);
        if (isSuccess){
            return Result.ok(null);
        }else{
            return Result.fail(null);
        }
    }
}

TeacherServiceImpl：

简单继承对应接口，因为TeacherController调用方法都为mybatis-plus提供的方法，所以无需其他方法构造。

package com.lxl.ggkt.vod.service.impl;

import com.lxl.ggkt.model.vod.Teacher;

import com.lxl.ggkt.vod.mapper.TeacherMapper;
import com.lxl.ggkt.vod.service.TeacherService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;

/**
 * <p>
 * 讲师 服务实现类
 * </p>
 *
 * @author atguigu
 * @since 2022-07-16
 */
@Service
public class TeacherServiceImpl extends ServiceImpl<TeacherMapper, Teacher> implements TeacherService {

}

TeacherQueryVo的数据封装：

@Data
public class TeacherQueryVo {
	
	@ApiModelProperty(value = "讲师姓名")
	private String name;

	@ApiModelProperty(value = "头衔 1高级讲师 2首席讲师")
	private Integer level;

	@ApiModelProperty(value = "入驻时间")
	private String joinDateBegin;

	@ApiModelProperty(value = "入驻时间")
	private String joinDateEnd;
}