springMVC中的@PathVariable

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：

 1 @Controller
 2 public class TestController {
 3      @RequestMapping(value="/user/{userId}/roles/{roleId}",method = RequestMethod.GET)
 4      public String getLogin(@PathVariable("userId") String userId,
 5          @PathVariable("roleId") String roleId){
 6          System.out.println("User Id : " + userId);
 7          System.out.println("Role Id : " + roleId);
 8          return "hello";
 9      }
10      @RequestMapping(value="/product/{productId}",method = RequestMethod.GET)
11      public String getProduct(@PathVariable("productId") String productId){
12            System.out.println("Product Id : " + productId);
13            return "hello";
14      }
15      @RequestMapping(value="/javabeat/{regexp1:[a-z-]+}",
16            method = RequestMethod.GET)
17      public String getRegExp(@PathVariable("regexp1") String regexp1){
18            System.out.println("URI Part 1 : " + regexp1);
19            return "hello";
20      }
21 }