请问socket链接打印机打印无效怎么处理

plus.nativeUI.showWaiting("正在打印中...");  
                        console.log('开始打印中...');  
                        var Socket = plus.android.importClass("java.net.Socket");  
                        var PrintWriter = plus.android.importClass("java.io.PrintWriter");  
                        var BufferedWriter = plus.android.importClass("java.io.BufferedWriter");  
                        var OutputStreamWriter = plus.android.importClass("java.io.OutputStreamWriter");  
                        var BufferedReader = plus.android.importClass("java.io.BufferedReader");  
                        var InputStreamReader = plus.android.importClass("java.io.InputStreamReader");    
                        var StrictMode = plus.android.importClass("android.os.StrictMode");  
                        var Build = plus.android.importClass("android.os.Build");  

                        if (Build.VERSION.SDK_INT > 9){  
                            var policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();  
                            StrictMode.setThreadPolicy(policy);  
                        }  
                        try {  
                            var socket = new Socket('192.168.2.135',80);  
                            socket.setKeepAlive(true);   
                            outputStream = socket.getOutputStream();  
                            plus.android.importClass(outputStream);  
                            outputStream.write(plus.android.invoke('我们都是中国人民！', 'getBytes', 'gbk'));  
                            outputStream.flush();  
                            socket.shutdownOutput();  
                            plus.nativeUI.closeWaiting();  
                            console.log('打印结束...');  
                        } catch(e){  
                            console.log(e)  
                            mui.toast("网络连接超时，请重新连接！")  
                            plus.nativeUI.closeWaiting();  
                        } 

打印机无任何反应，请问如何处理？