在java中获取登录用户名 [英] Get login username in java

问题描述

如何在 Java 中获取用户名/登录名?

How can I get the username/login name in Java?

这是我试过的代码...

This is the code I have tried...

try{
    LoginContext lc = new LoginContext(appName,new TextCallbackHandler());
    lc.login();
    Subject subject = lc.getSubject();
    Principal principals[] = (Principal[])subject.getPrincipals().toArray(new Principal[0]);

    for (int i=0; i<principals.length; i++) {
        if (principals[i] instanceof NTUserPrincipal || principals[i] instanceof UnixPrincipal) {
            String loggedInUserName = principals[i].getName();
        }
    }

}
catch(SecurityException se){
    System.out.println("SecurityException: " + se.getMessage());
}

当我尝试运行此代码时，我收到一个 SecurityException.有人可以告诉我我是否朝着正确的方向前进，并帮助我理解问题.

I get a SecurityException when I try to run this code. Could someone please tell me whether I'm heading in the right direction, and help me to understand the problem.

推荐答案

System.getProperty("user.name");

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