Restful风格中的CRUD：
增加：/result POST、修改：/result/1 PUT、获取：/result/1 GET、删除：/result/1 DELETE
范例：
web.xml中配置org.springframework.web.filter.HiddenHttpMethodFilter类，可以把post请求转为delete或put。
[html] view plain copy print ? <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> 控制器：
[html] view plain copy print ? @RequestMapping(value="/testRest/{id}",method=RequestMethod.GET) public String testRest(@PathVariable("id") Integer id){ System.out.println("testRestGet:"+id); return "success"; } @RequestMapping(value="/testRest",method=RequestMethod.POST) public String testRest(){ System.out.println("testRestPost"); return "success"; } @RequestMapping(value="/testRest/{id}",method=RequestMethod.DELETE) public String testRestDelete(@PathVariable("id") Integer id){ System.out.println("testRestDelete:"+id); return "success"; } @RequestMapping(value="/testRest/{id}",method=RequestMethod.PUT) public String testRestPut(@PathVariable("id") Integer id){ System.out.println("testRestPut:"+id); return "success"; } 请求页面：
[html] view plain copy print ? <!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>index</title> </head> <body> <a href="SpringAnnotation/testRest/1">TestRestGet</a> <br/><br/> <form action="SpringAnnotation/testRest" method="post"> <input type="submit" value="TestRestPost"/> </form> <br/><br/> <form action="SpringAnnotation/testRest/1" method="post"> <input type="hidden" name="_method" value="DELETE"/> <input type="submit" value="TestRestDelete"/> </form> <br/><br/> <form action="SpringAnnotation/testRest/1" method="post"> <input type="hidden" name="_method" value="PUT"/> <input type="submit" value="TestRestPut"/> </form> </body> </html>
如何发送DELETE和PUT请求？
（1）. 需要配置 HiddenHttpMethodFilter （2）. 需要发送 POST 请求（3）. 需要在发送 POST 请求时携带一个 name="_method" 的隐藏域, 值为 DELETE 或 PUT
