文章目录

https://www.bilibili.com/video/av49996848?p=8

@RequestMapping

params 参数

headers

value

@PathVariable

REST 风格

HiddenHttpMethodFilter - 拦截 delete、put 请求

原理：



操作：

web.xml 中添加

    <!-- 配置 org.springframework.web.filter.HiddenHttpMethodFilter: 可以把 POST 请求转为 DELETE 或 PUT 请求-->
    <filter>
    	<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    	<filter-name>HiddenHttpMethodFilter</filter-name>
    </filter>
    <filter-mapping>
    	<filter-name>HiddenHttpMethodFilter</filter-name>
    	<url-pattern>/*</url-pattern>
    </filter-mapping>

index.jsp 中添加( 假装不知道 ajax )

	<form action="test/delete" method="post">
		<input type="hidden" name="_method" value="DELETE">
		<input type="submit" value="Test DELETE">
	</form>
	<form action="tetst/put" method="post">
		<input type="hidden" name="_method" value="put">
		<input type="submit" value="Test PUT">
	</form>

controller 中添加

@Controller
public class HelloWorld {
	@ResponseBody //返回字符串（不进行渲染）
	@DeleteMapping("/test/delete")
	public String testDelete() {
		return "delete" ; 
	}
	@ResponseBody
	@PutMapping("/test/put")
	public String testPut() {
		return "put" ; 
	}
	
}



@RequestParam

@RequestHeader