【JavaWeb基础】RestController的使用

刺骨的言语ヽ痛彻心扉 2023-10-12 21:03 50阅读 0赞

**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

![324527188e574084be5a01d09b08a726.png][]

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

![8e27296978cf4d4ab064b3becec42027.png][]

在浏览器地址栏中输入[localhost:8080/listAddr][localhost_8080_listAddr]得到：

![4eb7ccf6c01c4969aa42bc687d398249.png][]

在postman中 点击Send后得到集合信息的响应

![8ddeb507470a4b1c9927b494766bd34f.png][]

同理，将地址中listAddr改为getAddr、hello也可以得到代码中对应的信息。

**三、思考拓展**

![8921728e0ec948d583af9b81a4a5b7ef.png][]

**四、参考链接**

1、学习视频教程[https://www.bilibili.com/video/BV1m84y1w7Tb?p=73&vd\_source=841fee104972680a6cac4dbdbf144b50][https_www.bilibili.com_video_BV1m84y1w7Tb_p_73_vd_source_841fee104972680a6cac4dbdbf144b50]

[324527188e574084be5a01d09b08a726.png]: https://img-blog.csdnimg.cn/324527188e574084be5a01d09b08a726.png
[8e27296978cf4d4ab064b3becec42027.png]: https://img-blog.csdnimg.cn/8e27296978cf4d4ab064b3becec42027.png
[localhost_8080_listAddr]: http://localhost:8080/listAddr
[4eb7ccf6c01c4969aa42bc687d398249.png]: https://img-blog.csdnimg.cn/4eb7ccf6c01c4969aa42bc687d398249.png
[8ddeb507470a4b1c9927b494766bd34f.png]: https://img-blog.csdnimg.cn/8ddeb507470a4b1c9927b494766bd34f.png
[8921728e0ec948d583af9b81a4a5b7ef.png]: https://img-blog.csdnimg.cn/8921728e0ec948d583af9b81a4a5b7ef.png
[https_www.bilibili.com_video_BV1m84y1w7Tb_p_73_vd_source_841fee104972680a6cac4dbdbf144b50]: https://www.bilibili.com/video/BV1m84y1w7Tb?p=73&vd_source=841fee104972680a6cac4dbdbf144b50