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Spring mvc中@RequestMapping 6个基本用法小结
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小結下spring mvc中的@RequestMapping的用法。??
1）最基本的，方法級別上應用，例如：??
???
Java代碼??
@RequestMapping(value="/departments")??public?String?simplePattern(){??????System.out.println("simplePattern?method?was?called");????return?"someResult";????}??
?? 則訪問http://localhost/xxxx/departments的時候，會調用 simplePattern方法了??
2） 參數綁定??
??
Java代碼??
@RequestMapping(value="/departments")??public?String?findDepatment(????@RequestParam("departmentId")?String?departmentId){??????????System.out.println("Find?department?with?ID:?"?+?departmentId);??????return?"someResult";????}??
????
? 形如這樣的訪問形式：??
?? /departments?departmentId=23就可以觸發訪問findDepatment方法了??
3 REST風格的參數??
??
Java代碼??
@RequestMapping(value="/departments/{departmentId}")??public?String?findDepatment(@PathVariable?String?departmentId){??????System.out.println("Find?department?with?ID:?"?+?departmentId);????return?"someResult";????}??
???
? 形如REST風格的地址訪問，比如：??
/departments/23，其中用(@PathVariable接收rest風格的參數??
4 REST風格的參數綁定形式之2??
?? 先看例子，這個有點象之前的：??
?
Java代碼??
@RequestMapping(value="/departments/{departmentId}")??public?String?findDepatmentAlternative(????@PathVariable("departmentId")?String?someDepartmentId){????????System.out.println("Find?department?with?ID:?"?+?someDepartmentId);??????return?"someResult";????}??
?
?? 這個有點不同，就是接收形如/departments/23的URL訪問，把23作為傳入的departmetnId,，但是在實際的方法findDepatmentAlternative中，使用??
@PathVariable("departmentId") String someDepartmentId，將其綁定為??
someDepartmentId,所以這里someDepartmentId為23??
5 url中同時綁定多個id??
?
?
?
Java代碼??
@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";????}??
?
?? 這個其實也比較好理解了。??
6 支持正則表達式??
??
?
Java代碼??
@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，則輸出：??
?
?
Textual part: sometext, numeric part: 123.?
?
?
?
?
見：http://my.oschina.net/jackyrong/blog/108859
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