我用的代码

 java.net.Socket login=new  java.net.Socket("192.169.1.1",5000);
        java.io.OutputStream out=login.getOutputStream();
        out.write(jTextField1.getText().getBytes());
     
       java.io.InputStream in=login.getInputStream();
        char c;
        String reply="";
        while((c=(char)in.read())!='/n'){
          reply+=String.valueOf(c);
        }