【JavaWeb基础】RestController的使用

news2024/11/13 3:45:22

一、学习笔记

@RestController=@Controller+@ResponseBody

其中，ResponseBody将方法返回值直接响应，如果返回值类型是实体对象/集合，将会转换为Json格式响应。

二、代码展示

创建两个类

代码如下：

package com.example.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


import java.util.ArrayList;
import java.util.List;
@RestController
public class ResponseController {

    @RequestMapping("/hello")
    public String hello(){
        System.out.println("Hello");
        return "hello~";
    }

    @RequestMapping("/getAddr")
    public Address getAddr(){
        Address addr=new Address();
        addr.setProvince("广东");
        addr.setCity("广西");
        return addr;
    }

    @RequestMapping("/listAddr")
    public List<Address> listAddr(){
        List<Address> list=new ArrayList<>();

        Address addr =new Address();
        addr.setProvince("广东");
        addr.setCity("广西");

        Address addr2 =new Address();
        addr2.setProvince("云南");
        addr2.setCity("海南");

        list.add(addr);
        list.add(addr2);
        return list;

    }

}
class Address{
    public String setprovince;
    public String setcity;

    public void setProvince(String setprovince) {
        this.setprovince = setprovince;
    }

    public void setCity(String setcity) {
        this.setcity = setcity;
    }
}

点击启动运行程序，了解到端口号为8080