Spring mvc中@RequestMapping 6個基本用法整理，mvc@requestmapping

Spring mvc中@RequestMapping 6個基本用法整理，mvc@requestmapping

繼續整理，這個是前段時間用jsp開發的一個網站，說起來php程式員去做jsp程式確實有些小不適應，但是弄完後絕對對於這種強型別語言而比收穫還是頗多的。

1,最基本的，方法層級上應用@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    @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  @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：  @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,所以這裡someDepartmentId為23  5, url中同時綁定多個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";    }     這個其實也比較好理解了。6, 支援Regex  @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.