SpringBoot - Controller

package com.example.demo.controller;

import com.alibaba.fastjson2.JSONObject;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/books")
public class BookController {

    // Get请求 通过路径变量传参
    // http://127.0.0.1:8080/books/20
    @GetMapping("/{id}")
    public String getById(@PathVariable Integer id){
        System.out.println("id :"+id);
        return "传入参数："+id;
    }

    // Get请求  url 传参
    // http://127.0.0.1:8080/books/get_parameters?name=小明
    //  这个传进来的参数名称 要和 方法 形参名 一致
    @RequestMapping(value = "/get_parameters",method = {RequestMethod.GET})
    public String getParameters(String name){
        System.out.println(name);
        return "传入参数："+name;
    }


    // 使用注解 映射绑定参数，参数名称 和形参名称不一致
    @RequestMapping(value = "/get_parameters1",method = {RequestMethod.GET})
    public String getParameters1(@RequestParam(name = "names",required = false,defaultValue = "默认值") String name1){
        System.out.println(name1);
        return "传入参数："+name1;
    }


    // Post请求 json 对象传参
    @RequestMapping(value = "/get_body",method = {RequestMethod.POST})
    public JSONObject getBody(@RequestBody JSONObject obj){
        System.out.println(obj);
        return obj;
    }




}