spring mvc rest风格的CRUD

DELETE：删除  PUT：更新POST：新增  GET：查询

Rest风格的URL 如何发送PUT请求和DELETE请求？

1.需要在web.xml中配置HidenHttpMethodFilter

<!--配置 org.springframework.web.filter.HiddenHttpMethodFilter ：可以把post转换为delete和put请求 -->
	<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>

2.需要发送POST请求，需要在发送POST请求时携带一个name=“_method”的隐藏域，值为DELETE或者PUT

<!-- get请求 -->
       <a href="testRest/122">test Rest get</a>

 <!-- DELETE请求 -->

    <form action="testRest/1" method="post">
        <input type="hidden" value="DELETE" name="_method"> <input
            type="submit" value="Test Rest DELETE">
    </form>

<!-- post请求 -->

    <form action="testRest" method="post">
        <input type="submit" value="Test Rest post">
    </form>

<!-- PUT请求 -->

    <form action="testRest/1" method="post">
        <input type="hidden" value="PUT" name="_method"> <input
            type="submit" value="Test Rest put">
    </form>

通过相同的路径名springmvc/testRest  调用不同方法。

   //在springMVC中如何获取id呢？ 使用@PathVariable注解
       @RequestMapping(value = "/testRest", method = RequestMethod.POST)
	public String testRest() {
		System.out.println("test Rest post");
		return "success";
	}

	@RequestMapping(value = "/testRest/{id}", method = RequestMethod.DELETE)
	public String testRestDelete(@PathVariable("id") Integer id) {
		System.out.println("test Rest delete" + id);
		return "success";
	}

	@RequestMapping(value = "/testRest/{id}", method = RequestMethod.GET)
	public String testRest(@PathVariable("id") Integer id) {
		System.out.println("test Rest GET" + id);
		return "success";
	}

	@RequestMapping(value = "/testRest/{id}", method = RequestMethod.PUT)
	public String testRestPut(@PathVariable("id") Integer id) {
		System.out.println("test Rest GET" + id);
		return "success";
	}