Spring mvc中@RequestMapping 基本用法

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1）最基本的，方法級如上應用，例如： 

1 @RequestMapping(value="/departments")  2 public String simplePattern(){  3   4   System.out.println("simplePattern method was called");  5   return "someResult";  6   7 }  

   則訪問http://localhost/xxxx/departments的時候，會調用 simplePattern方法了 

2） 參數綁定 

1 @RequestMapping(value="/departments")  2 public String findDepatment(  3   @RequestParam("departmentId") String departmentId){  4     5     System.out.println("Find department with ID: " + departmentId);  6     return "someResult";  7   8 }  

  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 

1 @RequestMapping(value="/departments/{departmentId}")  2 public String findDepatment(@PathVariable String departmentId){  3   4   System.out.println("Find department with ID: " + departmentId);  5   return "someResult";  6   7 }  

  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： 

1 @RequestMapping(value="/departments/{departmentId}")  2 public String findDepatmentAlternative(  3   @PathVariable("departmentId") String someDepartmentId){  4   5     System.out.println("Find department with ID: " + someDepartmentId);  6     return "someResult";  7   8 } 

   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,所以這裡someDepartmentId為23 

5）  url中同時綁定多個id 

 1 @RequestMapping(value="/departments/{departmentId}/employees/{employeeId}")   2 public String findEmployee(   3   @PathVariable String departmentId,   4   @PathVariable String employeeId){   5    6     System.out.println("Find employee with ID: " + employeeId +    7       " from department: " + departmentId);   8     return "someResult";   9   10 }  

 

6）  支援Regex 

1 @RequestMapping(value="/{textualPart:[a-z-]+}.{numericPart:[\\d]+}")  2 public String regularExpression(  3   @PathVariable String textualPart,  4   @PathVariable String numericPart){  5   6     System.out.println("Textual part: " + textualPart +   7       ", numeric part: " + numericPart);  8     return "someResult";  9 }  

   比如如下的URL：/sometext.123，則輸出： Textual part: sometext, numeric part: 123. 

Spring mvc中@RequestMapping 基本用法