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  • HiddenHttpMethodFilter进行请求过滤,实现Rest风格的url

             Rest 风格的 URL. 
             以 CRUD 为例: 
             新增: /order POST 
             修改: /order/1 PUT update?id=1 
             获取:/order/1 GET get?id=1 
             删除: /order/1 DELETE delete?id=1、

    浏览器只支持Post和get的方式,想要实现delete和put的方式,需要使用过滤器HiddenHttpMethodFilter

    1,配置过滤器
     <filter>
            <filter-name>hidden</filter-name>
            <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
        </filter>
    
        <filter-mapping>
            <filter-name>hidden</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>

    2,在客户端发起请求

    过滤器使用_method的这个参数来决定过滤成是什么类型的,因此,需要在前端的提交表单里面加上_method的隐藏域,注意要使用post方法进行提交

     <form action="/rest/12" method="post">
        <input type="hidden" name="_method" value="DELETE">
        <input type="submit" value="delete">
      </form>
      <form action="/rest/12" method="post">
        <input type="hidden" name="_method" value="PUT">
        <input type="submit" value="put">
      </form>
      <form action="/rest/12" method="post">
        <input type="submit" value="post">
      </form>
      <form action="/rest/12" method="get">
        <input type="submit" value="get">
      </form>

    3,后端控制器的编写

    控制器直接使用RequestMapping来指定方法就可以了

    @RequestMapping(value = "/rest/{id}",method = RequestMethod.DELETE)
        public String testrestDELETE(@PathVariable int id, Model model){
            model.addAttribute("msg","delete请求"+id);
            return SUCCESS;
        }
        @RequestMapping(value = "/rest/{id}",method = RequestMethod.PUT)
        public String testrestPUT(@PathVariable int id,Model model){
            model.addAttribute("msg","put请求"+id);
            return SUCCESS;
        }
        @RequestMapping(value = "/rest/{id}",method = RequestMethod.POST)
        public String testrestPOST(@PathVariable int id,Model model){
            model.addAttribute("msg","post请求"+id);
            return  SUCCESS;
    
        }
        @RequestMapping(value = "/rest/{id}",method = RequestMethod.GET)
        public String testrestDELETE(@PathVariable int id, ModelMap modelMap){
            modelMap.addAttribute("msg","get请求"+id);
            return SUCCESS;
        }

    特别注意!!!!!!!!!!!!!

    在tomcat8上面是不支持delete和post请求的,因此以上只能在tomcat7上面执行

    tomcat8运行时可以进入到相应的控制器,但是视图渲染返回的时候,由于不支持这两种方法,就会报出异常页面

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  • 原文地址:https://www.cnblogs.com/Coder-Pig/p/7340694.html
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