mybatis insert 数据到mysql数据库中，并返回新增一条数据的id

mybatis.xml文件中的写法

useGeneratedKeys：是否使用jdbc的getGenereatedKeys方法获取主键并赋值到keyProperty设置的属性中
keyProperty：实体类主键字段
parameterType：参数类型

        insert into app_task_information (task_name, app_file_md5_list, status, message, create_time, update_time)
        values(
                  #{appTaskInformationEntity.taskName},
                  #{appTaskInformationEntity.appFileMd5List},
                  #{appTaskInformationEntity.status},
                  #{appTaskInformationEntity.message},
                  #{appTaskInformationEntity.createTime},
                  #{appTaskInformationEntity.updateTime})
    

Mapper层接口的写法

Integer insertOne(@Param("appTaskInformationEntity")AppTaskInformationEntity appTaskInformationEntity);

Service层实现类的写法

	
	@Override
    public Integer insert(AppTaskInformationEntity appTask) {
        Integer integer = appTaskInformationDao.insertOne(appTask);
        System.out.println(integer);
        return integer;
    }

Controller层的写法

	
    @Transactional
    public R insert(@RequestParam("appTaskName") String appTaskName, @RequestParam("ids") List ids){

        if (StringUtils.isEmpty(appTaskName) || ids.size()<=0 || ids==null) return R.error("参数错误！");
        List apkFileMd5s = new ArrayList<>();
        for (Integer id : ids) {
            AndroidAppInformationEntity android = androidAppInformationService.selectById(id);
            apkFileMd5s.add(android.getApkFileMd5());
        }

		// 数据库新增的那条数据
        AppTaskInformationEntity appTask = new AppTaskInformationEntity();
        String md5List = String.valueOf(apkFileMd5s).replace(" ", "").replace("[", "").replace("]", "");
        appTask.setTaskName(appTaskName);
        appTask.setAppFileMd5List(md5List);
        appTask.setStatus(1);
        appTask.setCreateTime(new Date());
        appTask.setUpdateTime(new Date());

        Integer id = appTaskInformationService.insert(appTask);

		
		
        Integer task_id = appTask.getId();
        System.out.println("task_id "+task_id);

        for (Integer android_id : ids) {
            AndroidAppInformationEntity android = androidAppInformationService.selectById(android_id);
            AppIpv6InformationEntity appIpv6 = new AppIpv6InformationEntity();
            appIpv6.setTaskId(task_id);
            appIpv6.setAppId(android.getId());
            appIpv6.setApkFileMd5(android.getApkFileMd5());
            appIpv6.setCreateTime(new Date());
            appIpv6.setUpdateTime(new Date());
            appIpv6InformationService.insert(appIpv6);
        }

        return R.ok();
    }