Spring mvc中@RequestMapping 6个基本用法小结
2015-08-03 10:44
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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:
Java代码
@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
Java代码
@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
Java代码
@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:
Java代码
@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
Java代码
@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
Java代码
@RequestMapping(value="/{textualPart:[a-z-]+}.{numericPart:[\\d]+}")
public String regularexpression_r(
@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.
1)最基本的,方法级别上应用,例如:
Java代码
@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
Java代码
@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
Java代码
@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:
Java代码
@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
Java代码
@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
Java代码
@RequestMapping(value="/{textualPart:[a-z-]+}.{numericPart:[\\d]+}")
public String regularexpression_r(
@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.
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