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Tomcat 8上面是不支持delete和post请求的,因此以上只能在Tomcat 7上面执行
Tomcat 8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