小結下spring mvc中的@RequestMapping的用法。
1）最基本的，方法級別上應用，例如：
Java代碼
@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
Java代碼
@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
Java代碼
@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：
Java代碼
@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作爲傳入的departmetnId,，但是在實際的方法findDepatmentAlternative中，使用
@PathVariable("departmentId") String someDepartmentId，將其綁定爲
someDepartmentId,所以這裏someDepartmentId爲23
5 url中同時綁定多個id
Java代碼
@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 支持正則表達式
Java代碼
@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.