问题描述
我有一个Web应用程序,为此我想捕获访问我的网站的客户端的IP地址,以便我可以知道访问该应用程序的区域最多。我在我的应用程序中使用 Java EE
。
I have a web application and for that I want to capture the IP address of the clients who are accessing my website so that I can know what region is the most accessing the application. I am using Java EE
in my application.
如果我们谈论标题和何时,可能会有一些解决方案code>请求从最终用户发送。
Probably there is some solution if we talk about header and when request
is sent from the end-user.
推荐答案
使用方法 getRemoteAddr() http://docs.oracle.com/javaee/6/api/javax/servlet/ServletRequest.html =noreferrer> ServletRequest 或方法表单接口:
Use method getRemoteAddr() from interface ServletRequest or methods getHeaders() form interface HttpServletRequest:
HttpServletRequest httpRequest = (HttpServletRequest) request;
String userIpAddress = httpRequest.getHeader("X-Forwarded-For");
使用方法时有一个注意事项:
There's one caution for using the method getRemoteAddr:
当然可以使用方法,一般情况下,您将获得客户端的IP。但是,如果用户位于代理后面,则该方法无用。在这种情况下,您将获得代理服务器的IP地址,而不是客户端。但代理可能在特殊的 HTTP
标头中包含请求客户端IP。所以要检索真实客户端IP调用方法 getHeader(X-Forwarded-For)
。
Sure you can use the method and in general case you will get IP of client. However, the method is useless if an user is behind a proxy. In this case you'll get the proxy server's IP address and not the client. But the proxy may include the requesting client IP in a special HTTP
header. So to retrieve real-client-IP call method getHeader("X-Forwarded-For")
.
JSP中的示例用法:
使用:
<c:set var="userIp" value="${requestScope.header('x-forwarded-for')}" scope="session" />
然后在方便的地方从会话中获取此值。
And then get this value from the session in a convenient place.
在JSP中,您可以使用< c:out value =$ {sessionScope.userIp}/>
或在servlet中使用 session.getAttribute('userIp');
In JSP you can use <c:out value="${sessionScope.userIp}" />
or in servlet as session.getAttribute('userIp');
请阅读:
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