相同类型的对象不能互相转换：java.lang.ClassCastException: com.anhoo.po.UserPo cannot be cast to com.anhoo.po.UserPo

@PostMapping("/findone")
    public String getone(UserVo userVo) throws IllegalAccessException, InvocationTargetException, InstantiationException {
        if (userVo != null) {
            UserPo userPo = (UserPo) ConvertUtil.convertDtoAndVo(userVo, UserPo.class);
            return ResultUtil.okRes(dataUserService.findOne(userPo));
        } else {
            return ResultUtil.execRes();
        }
    }

这个时候，需要看一下你的pom里面是否有devtools这个包

如果有的话在resources下新建文件夹 META-INF新建文件内容：

restart.include.mapper=/mapper-[\w-\.]+jar
restart.include.pagehelper=/pagehelper-[\w-\.]+jar