The Android studio front end passes two parameters to the spring boot back end

Today, two values ​​​​of activity id and user id need to be transmitted from the front end to the back end, and the back end receives these two parameters and processes the corresponding values ​​in the database according to the two parameters

The commonly used delete function has only one parameter, so the first time I use two parameters, I don’t know how to write the format. After trying several times, I finally know:

    @ResponseBody
    @GetMapping("/line/{aId}/{uId}")
    public Result getUser(@PathVariable("aId") int aId, @PathVariable("uId") String uId){
        SignInForm signInForm =signInFormService.getByAIdAndUId(aId,uId);
        if(signInForm!=null){//存在
            result.setSuccess("查询成功！",gson.toJson(signInForm));
        }else{//不存在
            result.setSuccess("没有找到相关数据！",null);
        }
        return result;
    }

Full code:

• mapper layer

    @Select("select * from signinform where aId = #{aId} and uId = #{uId}")
    SignInForm selectByAIdAndUId(int aId, String uId);

• service interface

SignInForm getByAIdAndUId(int aId, String uId);

• serviceImpl class

     public SignInForm getByAIdAndUId(int aId,String uId) {
        return this.getBaseMapper().selectByAIdAndUId(aId,uId);
    }

• AS front end (

DatabaseUtil.selectLineById("sign","line",aId,uId);