SpringMVC中REST风格

需要增加filter过滤器：HiddenHttpMethodFilter

可以将post请求转成delete和put方式的rest风格，当然也包括post；

    <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>

    @RequestMapping(value="/world/{id}",method={RequestMethod.PUT})
    public String HelloworldPUT(@PathVariable(value="id") Integer id) {
        System.out.println("开始处理页面请求...PUT" + id);
        return "success";
    }
    
    @RequestMapping(value="/world/{id}",method={RequestMethod.DELETE})
    public String HelloworldDELETE(@PathVariable(value="id") Integer id) {
        System.out.println("开始处理页面请求...DELETE" + id);
        return "success";
    }
    
    @RequestMapping(value="/world/{id}",method={RequestMethod.POST})
    public String HelloworldPOST(@PathVariable(value="id") Integer id) {
        System.out.println("开始处理页面请求...POST" + id);
        return "success";
    }

      <form action="hello/world/15" method="post">
          username:<input name="username" type="text" value="zhangpn"><br/><br/>
          password:<input name="password" type="password" value="18"><br/><br/>
          <input type="hidden" name="_method" value="DELETE">
          <input type="submit" value="DELETE --->!">
      </form>
      <br/>
      <br/>
      <form action="hello/world/48" method="post">
          username:<input name="username" type="text" value="zhangpn"><br/><br/>
          password:<input name="password" type="password" value="18"><br/><br/>
          <input type="hidden" name="_method" value="PUT">
          <input type="submit" value="PUT --->!">
      </form>      
      <br/>
      <br/>
      <form action="hello/world/88" method="post">
          username:<input name="username" type="text" value="zhangpn"><br/><br/>
          password:<input name="password" type="password" value="18"><br/><br/>
          <input type="submit" value="PUT --->!">
      </form> 

@RequestMapping(value="/world/{id}",method={RequestMethod.XXX})
value值一样，method不同，URL处理不同！