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

刺骨的言语ヽ痛彻心扉 2023-02-17 15:54 28阅读 0赞

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

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;
        }