在spring mvc中如何获取控制器中的上下文路径 [英] In spring mvc how to get the context path in controller

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

推荐答案

1. 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();
    }
}

这篇关于在spring mvc中如何获取控制器中的上下文路径的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！