spring mvc中的@PathVariable[动态参数类似于spring中的通配符功能]

文章来源：http://jackyrong.iteye.com/blog/2059307

 spring mvc中的@PathVariable是用来获得请求url中的动态参数的，十分方便，复习下： 

 @Controller
 public class TestController {
      @RequestMapping(value="/user/{userId}/roles/{roleId}",method = RequestMethod.GET)
      public String getLogin(@PathVariable("userId") String userId,
          @PathVariable("roleId") String roleId){
          System.out.println("User Id : " + userId);
          System.out.println("Role Id : " + roleId);
          return "hello";
      }
      @RequestMapping(value="/product/{productId}",method = RequestMethod.GET)
      public String getProduct(@PathVariable("productId") String productId){
            System.out.println("Product Id : " + productId);
            return "hello";
      }
      @RequestMapping(value="/javabeat/{regexp1:[a-z-]+}",
            method = RequestMethod.GET)
      public String getRegExp(@PathVariable("regexp1") String regexp1){
            System.out.println("URI Part 1 : " + regexp1);
            return "hello";
      }
 }