?http://jackyrong.iteye.com/blog/1806326
?
小结下spring mvc中的@RequestMapping的用法。?
1)最基本的,方法级别上应用,例如:?
???
- @RequestMapping(value="/departments")??
- public?String?simplePattern(){??
- ??
- ??System.out.println("simplePattern?method?was?called");??
- ??return?"someResult";??
- ??
- }??
?? 则访问http://localhost/xxxx/departments的时候,会调用 simplePattern方法了?
2) 参数绑定?
??
- @RequestMapping(value="/departments")??
- public?String?findDepatment(??
- ??@RequestParam("departmentId")?String?departmentId){??
- ????
- ????System.out.println("Find?department?with?ID:?"?+?departmentId);??
- ????return?"someResult";??
- ??
- }??
???
? 形如这样的访问形式:?
?? /departments?departmentId=23就可以触发访问findDepatment方法了?
3 REST风格的参数?
??
- @RequestMapping(value="/departments/{departmentId}")??
- public?String?findDepatment(@PathVariable?String?departmentId){??
- ??
- ??System.out.println("Find?department?with?ID:?"?+?departmentId);??
- ??return?"someResult";??
- ??
- }??
??
? 形如REST风格的地址访问,比如:?
/departments/23,其中用(@PathVariable接收rest风格的参数?
4 REST风格的参数绑定形式之2?
?? 先看例子,这个有点象之前的:?
- @RequestMapping(value="/departments/{departmentId}")??
- public?String?findDepatmentAlternative(??
- ??@PathVariable("departmentId")?String?someDepartmentId){??
- ??
- ????System.out.println("Find?department?with?ID:?"?+?someDepartmentId);??
- ????return?"someResult";??
- ??
- }??
?? 这个有点不同,就是接收形如/departments/23的URL访问,把23作为传入的departmetnId,,但是在实际的方法findDepatmentAlternative中,使用?
@PathVariable("departmentId") String someDepartmentId,将其绑定为?
someDepartmentId,所以这里someDepartmentId为23?
5 url中同时绑定多个id?
?
- @RequestMapping(value="/departments/{departmentId}/employees/{employeeId}")??
- public?String?findEmployee(??
- ??@PathVariable?String?departmentId,??
- ??@PathVariable?String?employeeId){??
- ??
- ????System.out.println("Find?employee?with?ID:?"?+?employeeId?+???
- ??????"?from?department:?"?+?departmentId);??
- ????return?"someResult";??
- ??
- }??
?? 这个其实也比较好理解了。?
6 支持正则表达式?
??
- @RequestMapping(value="/{textualPart:[a-z-]+}.{numericPart:[\\d]+}")??
- public?String?regularExpression(??
- ??@PathVariable?String?textualPart,??
- ??@PathVariable?String?numericPart){??
- ??
- ????System.out.println("Textual?part:?"?+?textualPart?+???
- ??????",?numeric?part:?"?+?numericPart);??
- ????return?"someResult";??
- }??
?? 比如如下的URL:/sometext.123,则输出:?
Textual part: sometext, numeric part: 123.?