SpringMVC Rest风格
对资源的操作,基本都不外乎增删改查4个操作
传统风格:http://i.cnblogs.com/element/add?id=1
http://i.cnblogs.com/element/update?id=1
http://i.cnblogs.com/element/delete?id=1
http://i.cnblogs.com/element/get?id=1
使用起来繁琐,而且当操作多的时候,起url名字也会变的困难,Rest风格就是来解决这个问题的
比如我要对一号元素做增删改查的操作
我只需要url写成http://i.cnblogs.com/element/1 然后通过请求方法的不同 例如:get、post、delete、put等来区别是增删改查中的哪个操作
具体代码如下:
@Controller public class RestController { @RequestMapping(value = "book/{id}" ,method = RequestMethod.GET) public String query(Model model, @PathVariable int id){ model.addAttribute("msg","查询"+id+"号图书"); return "restFul"; } @RequestMapping(value = "book/{id}" ,method = RequestMethod.DELETE) public String delete(Model model, @PathVariable int id){ model.addAttribute("msg","删除"+id+"号图书"); return "restFul"; } @RequestMapping(value = "book/{id}" ,method = RequestMethod.PUT) public String update(Model model, @PathVariable int id){ model.addAttribute("msg","更新"+id+"号图书"); return "restFul"; } @RequestMapping(value = "book/{id}" ,method = RequestMethod.POST) public String add(Model model, @PathVariable int id){ model.addAttribute("msg","添加"+id+"号图书"); return "restFul"; } }
现在问题就剩下 如何让前端.jsp页面发送不同的请求,有以下几步
1)、在web.xml文件中写好 过滤器
<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>
2)、在.jsp页面中区分好提交请求
<form action="book/1" method="post"> <input type="submit" value="添加1号图书"> </form> <form action="book/1" method="post"> <label> <input name="_method" value="delete"> </label> <input type="submit" value="删除1号图书"> </form>