linux java pkexec提权并打开一个图形界面程序

程序示例

static void pkexecGui() throws Exception {
        try {
            Runtime rt = Runtime.getRuntime();
            Process proc = rt.exec("pkexec env DISPLAY=:0 XAUTHORITY=/home/yeqiang/.Xauthority filezilla");
            InputStream stdin = proc.getInputStream();
            InputStreamReader isr = new InputStreamReader(stdin);
            BufferedReader br = new BufferedReader(isr);
            String line = null;
            System.out.println("");
            while ((line = br.readLine()) != null)
                System.out.println(line);
            System.out.println("");
            isr = new InputStreamReader(proc.getErrorStream());
            br = new BufferedReader(isr);

            System.out.println("");
            while ((line = br.readLine()) != null)
                System.out.println(line);
            System.out.println("");
            int exitVal = proc.waitFor();
            System.out.println("Process exitValue: " + exitVal);
        } catch (Throwable t) {
            t.printStackTrace();
        }

    }

注意

pkexec运行默认加载的环境变量没有设置显示参数，会导致打不开DISPLAY，通过pkexec env参数注入，关键代码

pkexec env DISPLAY=:0 XAUTHORITY=/home/yeqiang/.Xauthority filezilla

其中

env DISPLAY=:0 XAUTHORITY=/home/yeqiang/.Xauthority

为传递给pkexec的环境变量参数

末尾的filezilla为一个图形界面程序，输入正确密码后，可以在root权限下运行filezilla