在基于Servlet的Web应用程序中获取LAN客户端计算机名称 [英] Get LAN client machine name in servlet based web application

问题描述

我有在局域网中运行的spring MVC应用程序.在那儿，客户端计算机的IP地址不时改变.因此，我想获取客户端计算机名称(它们的计算机名称是固定的)，因为我想在不创建登录名的情况下获取客户端计算机的详细信息.

I have spring MVC application, that runs in LAN. In there client machines IP addresses are changing time to time. Therefore I want to get client machines names(Their machine name is fixed ),because I want to get client machine's details without creating log in.

有可能获得客户端计算机的名称吗?如果有可能怎么办? 还是有其他方法可以获取该用户的详细信息

Is that possible to get client machine's name?? if it's possible how?? Or is there any other way to get that user details

到目前为止我尝试过的代码

codes I have tried so far

在HttpServlet中

In HttpServlet

public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException { 
    String hostname = request.getRemoteUser(); //this gives null
    String hostname = request.getRemoteHost(); //This gives host machine name
}

回复@Eugeny Loy 在web.xml

reply to @Eugeny Loy In web.xml

<init-param>
    <param-name>jcifs.smb.client.username</param-name>
    <param-value>username</param-value>

</init-param>

在serverlet类中

In serverlet class

String username = config.getInitParameter("username");//This gives client IP address

推荐答案

我找到了获取客户端计算机名称的方法.

I found the way to get client machine's name.

public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException { 

    Logger.getLogger(this.getClass()).warning("Inside Confirm Servlet");  
    response.setContentType("text/html");

    String hostname = request.getRemoteHost(); // hostname
    System.out.println("hostname"+hostname);

    String computerName = null;
    String remoteAddress = request.getRemoteAddr();
    System.out.println("remoteAddress: " + remoteAddress);
    try {
        InetAddress inetAddress = InetAddress.getByName(remoteAddress);
        System.out.println("inetAddress: " + inetAddress);
        computerName = inetAddress.getHostName();

        System.out.println("computerName: " + computerName);


        if (computerName.equalsIgnoreCase("localhost")) {
            computerName = java.net.InetAddress.getLocalHost().getCanonicalHostName();
        } 
    } catch (UnknownHostException e) {

        }

    System.out.println("computerName: " + computerName);
}    

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