springboot中部分数据的封装方法

 //响应字符串格式数据
    @RequestMapping("/hello")
    public Result hello(){
        System.out.println("Hello World");
//        return new Result(1,"success","Hello World");
        return Result.success("Hello World");
    }

    //响应对象类数据
    //返回类型为json格式数据
    @RequestMapping("/getAddr")
    public Result getAddr(){
        Address addr = new Address();
        addr.setProvince("河北");
        addr.setCity("石家庄");
        return Result.success(addr);
    }

    //集合响应json格式
    @RequestMapping("/getData")
    public Result getData(){
        List<Data> dataArrayList = this.getDataFirst();
        return Result.success(dataArrayList);
    }

    //数组格式封装
    @RequestMapping("/arrayParam")
    public String arrayParam(String[] hobby){
        System.out.println(Arrays.toString(hobby));
        return "OK";
    }

    //类封装
    //添加注解@RequestParam
    @RequestMapping("/listParam")
    public String listParam(@RequestParam List<String> hobby){
        System.out.println(hobby);
        return "OK";
    }

    //日期格式参数添加注解
    //@DataTimeFormat
    @RequestMapping("/dataParam")
    public String dataParam(@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") LocalDateTime updateTime){
        System.out.println(updateTime);
        return "OK";
    }

    //json格式数据参数添加注解
    //@RequestBody
    @RequestMapping("/jsonParam")
    public String jsonParam(@RequestBody User user){
        System.out.println(user);
        return "OK";
    }

    //路径参数添加注解
    //@PathVariable
    @RequestMapping("/path/{id}")
    public String pathParam(@PathVariable Integer id){
        System.out.println(id);
        return "OK";
    }

    @RequestMapping("/path/{id}/{name}")
    public String pathParam(@PathVariable Integer id,@PathVariable String name){
        System.out.println(id+":"+name);
        return "OK";
    }

 值得一提的是当响应的类型为集合，且想要将这个集合在响应时自动转化为json格式的数据的话

在类名前加上注解@RestController即可

实现自动转化json格式的注解为@ResponseBody，这个注解@RestController中已经存在了，所以只需要在类名前加上注解@RestController

方法的返回的数据类型需要是List<>