SpringMVC中@ResourceMapping的基本用法

最近从Struts转投SpringMVC，看代码时发现这个注解，感觉其作用应该和Struts的action差不多，把用法记录下来。

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1.

@RequestMapping(value="/departments")
public String simplePattern(){  

  System.out.println("simplePattern method was called");
  return "someResult";  

}
//访问http://localhost/xxxx/departments的时候，会调用implePattern方法了  

2.

@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.

@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.

@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.

@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";  

}
//绑定多个参数

6.

@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";
}  

//正则表达式 比如如下的URL：/sometext.123，则输出： Textual part: sometext, numeric part: 123.