java 過濾器獲取URL區別

假定你的web application 名稱爲CardHolderWeb,你在瀏覽器中輸入請求路徑：

http://localhost:8080/CardHolderWeb/memberCardManagement/init.action

則執行下面向行代碼後打印出如下結果：

1、 System.out.println(request.getContextPath());

打印結果：/CardHolderWeb

2、System.out.println(request.getServletPath());

打印結果：/memberCardManagement/init.action

3、 System.out.println(request.getRequestURI());

打印結果：/CardHolderWeb/memberCardManagement/init.action

4、System.out.println(request.getRequestURL());

打印結果：http://localhost:8080/CardHolderWeb/memberCardManagement/init.action

5、 System.out.println(request.getRealPath("/"));

打印結果：發佈到項目的目錄