Java 使用具有特定IP地址的打印机在Android中打印

我的问题是，我有一台连接到以太网的打印机，我可以使用打印机的IP地址打印到该打印机，但问题是，打印机在指定的打印行结束时停止打印，因此纸张卡在打印机中

try {
      Socket sock = new Socket(ipAddress, 9100);
      PrintWriter oStream = new PrintWriter(sock.getOutputStream());
      oStream.println("HI,test from Android Device");
      oStream.println("\n\n\n");
      oStream.close();
      sock.close();
} catch (UnknownHostException e) {
           e.printStackTrace();
} catch (IOException e) {
           e.printStackTrace();
}

我的代码：

try {
    Socket sock = new Socket("192.168.0.131", 9100);
    PrintWriter oStream = new PrintWriter(sock.getOutputStream());
    oStream.println("HI,test from Android Device");
    oStream.println("\n\n\n");
    oStream.close();
    sock.close();
} catch (UnknownHostException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

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只需在行尾添加一个

\f

oStream.println("\n\n\n\f");

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这是用于表单提要/新页面的

在与进行套接字连接后，我无法打印您的代码 打印机

try {
      Socket sock = new Socket(ipAddress, 9100);
      PrintWriter oStream = new PrintWriter(sock.getOutputStream());
      oStream.println("HI,test from Android Device");
      oStream.println("\n\n\n");
      oStream.close();
      sock.close();
} catch (UnknownHostException e) {
           e.printStackTrace();
} catch (IOException e) {
           e.printStackTrace();
}

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有没有办法知道打印是否成功？