在spring mvc中如何获取控制器中的上下文路径
问题描述：
我需要在控制器中使用应用程序上下文路径，我尝试下面的代码，它抛出NULLPOINTER EXCEPTION。
I need application context path in controller, I tried the below code its throwing NULLPOINTER EXCEPTION.
HttpServletRequest请求;
String Path = request.getContextPath（）;
HttpServletRequest request;
String Path = request.getContextPath();
请帮助我
感谢
Please help me
Thanks
答
-
已声明变量
请求，但未初始化
。难怪您会收到NullPointerException。
查看文档访问不同的请求相关数据。
Look at documentation to access different request related data.
读完后，并确定要将代码绑定到本机Servlet API，请尝试：
After you read that, and are sure you want to tie your code to native Servlet API, try this:
@Controller
class MyController {
@RequestMapping
public void handleMe(HttpServletRequest request) {
String path = request.getContextPath();
}
}