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SpringMVC---RESTful中put和delete实现

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SpringMVC———RESTful中put和delete实现

HiddenHttpMethodFilter：浏览器form表单只支持GET和POST请求，不支持DELETE、PUT请求，Spring添加了一个过滤器，可以将这些请求转换为标准的http方法，支持GET、POST、PUT和DELETE请求。

实现过程：

配置过滤器
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<filter>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
实现list页面
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//Controller代码
@RequestMapping(value="/list",method=RequestMethod.GET)
	public String list()
	{
		return "user/list";
	}
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//list.jsp代码
<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
	<h1>用户列表</h1>
</body>
</html>
实现删除功能
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//Controller代码
@RequestMapping(value="/{id}",method=RequestMethod.DELETE)
	public String delete(HttpServletRequest request )
	{
		System.out.println("delete");
		//执行删除
		return "redirect:/user/list";
	}
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//jsp代码
<!-- 	删除操作 -->
	<a href="javascript:void(0)" onclick="deleteById()">删除</a>
	<form action="1" method="post" id="deleteForm">
		<input type="text" name="_method" value="DELETE" />
		<button>DELETE提交</button>
	</form>
	<script>
		function deleteById()
		{
			document.getElementById('deleteForm').submit();
		}
	</script>
实现更新功能
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//Controller代码
@RequestMapping(value="/{id}",method=RequestMethod.PUT)
	public String update(HttpServletRequest request )
	{
		System.out.println("update");
		//执行更新
		return "redirect:/user/list";
	}
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//jsp代码
<!-- 	更新操作 -->
	<a href="javascript:void(0)" onclick="updateById()">修改</a>
	<form action="1" method="post" id="updateForm">
		<input type="text" name="_method" value="PUT" />
		<button>PUT提交</button>
	</form>
	<script>
		function updateById()
		{
			document.getElementById('updateForm').submit();
		}
	</script>