java连接pos打印机 输入汉字 打印出来乱码 求解答

private boolean print(String ip, int port, String str,String code,int skip) 
throws Exception{ 
    Socket client=new java.net.Socket(); 
    PrintWriter socketWriter; 
    client.connect(new InetSocketAddress(ip,port),1000); // 创建一个 socket 
    socketWriter = new PrintWriter(client.getOutputStream());// 创建输入输出数据流
    /* 纵向放大一倍 */ 
    socketWriter.write(0x1c); 
    socketWriter.write(0x21); 
    socketWriter.write(8); 
    socketWriter.write(0x1b); 
    socketWriter.write(0x21); 
    socketWriter.write(8); 
    socketWriter.println(str); 
    // 打印条形码
    socketWriter.write(0x1d); 
    socketWriter.write(0x68); 
    socketWriter.write(120); 
    socketWriter.write(0x1d); 
    socketWriter.write(0x48); 
    socketWriter.write(0x01); 
    socketWriter.write(0x1d); 
    socketWriter.write(0x6B); 
    socketWriter.write(0x02); 
    socketWriter.println(code); 
    socketWriter.write(0x00); 
    for(int i=0;i<skip;i++){ 
        socketWriter.println(" ");// 打印完毕自动走纸
    } 
 }
java连接pos58 打印机！ 网上是上面的代码  经认证 可以打印 但是 从打印机打不出来中文 ，都是乱码  跪求 解答