Spring mvc中@RequestMapping 6个基本用法整理

时间:2023-03-09 06:10:50
Spring mvc中@RequestMapping 6个基本用法整理

继续整理,这个是前段时间用jsp开发的一个站点,说起来php程序员去做jsp程序确实有些小不适应,但是弄完后绝对对于这种强类型语言而比收获还是颇多的。

1,最基本的,方法级别上应用
@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.