spring mvc中的@PathVariable

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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";           }      }

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