【Java】Spring boot快速上手（二）：参数传递

曾经终败给现在 2023-09-23 13:10 7阅读 0赞

![在这里插入图片描述][46a276a39e294a86973b49f76088176d.png]

## 什么是参数传递： ##

**`例如：http://localhost:8080/sprsds/index?name=87123`**

@RequestMapping(value = "/sprsds/index")
        @ResponseBody
        String eat(@RequestParam("name") String name) {
        
            System.out.println("test");
            return name;
        }

响应  
![在这里插入图片描述][e096f65a05684fe7ae0ca9aad282c9bb.png]

--------------------

## get方式Url传参 ##

> |—@PathVariable 即：url/id/87123形式  
> |—@RequestParam 即：url?name=87123形式

### @PathVariable ###

package com.example.demo.User;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    
    public class index {
        
        @RequestMapping(value = "/sprsds/{name}")
        @ResponseBody String eat(@PathVariable("name") String name) {
        
            System.out.println("test");
            return name;
        }
    }

响应  
![在这里插入图片描述][ed9e00b36fed4ea389c727a63c4b3cab.png]

--------------------

## POST方式传参 ##

> @RequestParam

package com.example.demo.User;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    @Controller
    
    public class index {
        
        @RequestMapping(value = "/sprsds/index")
        @ResponseBody
        String eat(@RequestParam("name") String name) {
        
            System.out.println("test");
            return name;
        }
    }

响应  
![在这里插入图片描述][33c2fc2e2b3346128bf581c2729e4a10.png]

--------------------

[46a276a39e294a86973b49f76088176d.png]: https://img-blog.csdnimg.cn/46a276a39e294a86973b49f76088176d.png
[e096f65a05684fe7ae0ca9aad282c9bb.png]: https://img-blog.csdnimg.cn/e096f65a05684fe7ae0ca9aad282c9bb.png
[ed9e00b36fed4ea389c727a63c4b3cab.png]: https://img-blog.csdnimg.cn/ed9e00b36fed4ea389c727a63c4b3cab.png
[33c2fc2e2b3346128bf581c2729e4a10.png]: https://img-blog.csdnimg.cn/33c2fc2e2b3346128bf581c2729e4a10.png