642      阿裏雲  技術社區[雲棲]

JSP中獲取各種路徑的方法

test1.jsp
<a href ="test.jsp?p=fuck">跳轉到test2</a>

test2.jsp

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

out.println("basePath:"+basePath);
out.println("<br/>");
out.println("getContextPath:"+request.getContextPath());
out.println("<br/>");
out.println("getServletPath:"+request.getServletPath());
out.println("<br/>");
out.println("getRequestURI:"+request.getRequestURI());
out.println("<br/>");
out.println("getRequestURL:"+request.getRequestURL());
out.println("<br/>");
out.println("getRealPath:"+request.getRealPath("/"));
out.println("<br/>");
out.println("getServletContext().getRealPath:"+getServletContext().getRealPath("/"));
out.println("<br/>");
out.println("getQueryString:"+request.getQueryString());
%>
顯示結果：
basePath:https://localhost:8080/test/
getContextPath:/test
getServletPath:/test.jsp
getRequestURI:/test/test.jsp
getRequestURL:https://localhost:8080/test/test.jsp
getRealPath:D:\Tomcat 6.0\webapps\test\
getServletContext().getRealPath:D:\Tomcat 6.0\webapps\test\
getQueryString:p=fuck

在一些應用中未登錄用戶請求了必須登錄的資源時，提示用戶登錄，此時要記住用戶訪問的當前頁麵的URL，當登錄成功後根據記住的URL跳回用戶最後訪問的頁麵：
String lastAccessUrl = request.getRequestURL() + "?" + request.getQueryString();

原帖地址：https://www.cnblogs.com/JemBai/archive/2010/11/10/1873764.html

最後更新：2017-04-03 16:49:10

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