一个分享个人学习、开发经验的Blog,http://www.joyphper.net

Spring mvc中@RequestMapping 6个基本用法小结

posted @ 2013-07-28 14:23 | 阅读:2389 | 评论:0 | 分类: Java

 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. 

 

 

TAG: spring mvc , RequestMapping

共有0条评论 发表评论>>

点击换一张验证码