代码工作正常没有任何问题我只是想让它能够进行文件传输，现在我只能进行从服务器到客户端的文本聊天，反之亦然。
我应该在哪里进行更改以启用文件传输？
我是Android编程的新手，我真的可以使用你有价值的知识
这是我的主要活动MyActivity.java
package com.aghil.adesara.socket.client;
import java.util.ArrayList;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import com.aghil.custom.adapter.MyCustomAdapter;
//Display Activity with sending messages to server
@SuppressLint("NewApi")
public class MyActivity extends Activity
{
private ListView mList;
private ArrayList<String> arrayList;
private MyCustomAdapter mAdapter;
private TCPClient mTcpClient = null;
private connectTask conctTask = null;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
arrayList = new ArrayList<String>();
final EditText editText = (EditText) findViewById(R.id.editText);
Button send = (Button)findViewById(R.id.send_button);
//relate the listView from java to the one created in xml
mList = (ListView)findViewById(R.id.list);
mAdapter = new MyCustomAdapter(this, arrayList);
mList.setAdapter(mAdapter);
mTcpClient = null;
// connect to the server
conctTask = new connectTask();
conctTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String message = editText.getText().toString();
//add the text in the arrayList
arrayList.add("Android Client: " + message);
//sends the message to the server
if (mTcpClient != null)
{
mTcpClient.sendMessage("Android Client: "+message);
}
//refresh the list
mAdapter.notifyDataSetChanged();
editText.setText("");
}
});
}
// receive the message from server with asyncTask
public class connectTask extends AsyncTask<String,String,TCPClient> {
@Override
protected TCPClient doInBackground(String... message)
{
//we create a TCPClient object and
mTcpClient = new TCPClient(new TCPClient.OnMessageReceived()
{
@Override
//here the messageReceived method is implemented
public void messageReceived(String message)
{
try
{
//this method calls the onProgressUpdate
publishProgress(message);
if(message!=null)
{
//
if(message.contains("settings"))
{
Intent abc = new Intent(android.provider.Settings.ACTION_SETTINGS);
startActivity(abc);
}
if(message.contains("camera")) {
Intent cam = getPackageManager().getLaunchIntentForPackage("com.android.camera");
startActivity(cam);
}
if(message.contains("clock")) {
Intent cam = getPackageManager().getLaunchIntentForPackage("com.android.deskclock");
startActivity(cam);
}
//
System.out.println("Return Message from Socket::::: >>>>> "+message);
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
mTcpClient.run();
if(mTcpClient!=null)
{
mTcpClient.sendMessage("Initial Message when connected with Socket Server");
}
return null;
}
@Override
protected void onProgressUpdate(String... values) {
super.onProgressUpdate(values);
//in the arrayList we add the messaged received from server
arrayList.add(values[0]);
// notify the adapter that the data set has changed. This means that new message received
// from server was added to the list
mAdapter.notifyDataSetChanged();
}
}
@Override
protected void onDestroy()
{
try
{
System.out.println("onDestroy.");
mTcpClient.sendMessage("bye");
mTcpClient.stopClient();
conctTask.cancel(true);
conctTask = null;
}
catch (Exception e)
{
e.printStackTrace();
}
super.onDestroy();
}
}
这是我的TCPclient.java文件
package com.aghil.adesara.socket.client;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import android.util.Log;
public class TCPClient {
private String serverMessage;
// Specify the Server Ip Address here.
public static final String SERVERIP = "192.168.173.1"; // your computer IP address
public static final int SERVERPORT = 0001;
private OnMessageReceived mMessageListener = null;
private boolean mRun = false;
private PrintWriter out = null;
private BufferedReader in = null;
// Constructor of the class. OnMessagedReceived listens for the messages received from server
public TCPClient(final OnMessageReceived listener)
{
mMessageListener = listener;
}
//Sends the message entered by client to the server
public void sendMessage(String message){
if (out != null && !out.checkError()) {
System.out.println("message: "+ message);
out.println(message);
out.flush();
}
}
public void stopClient(){
mRun = false;
}
public void run() {
mRun = true;
try {
//here you must put your computer's IP address.
InetAddress serverAddr = InetAddress.getByName(SERVERIP);
Log.e("TCP SI Client", "SI: Connecting...");
//create a socket to make the connection with the server
Socket socket = new Socket(serverAddr, SERVERPORT);
try {
//send the message to the server
out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())), true);
Log.e("TCP SI Client", "SI: Sent.");
Log.e("TCP SI Client", "SI: Done.");
//receive the message which the server sends back
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
//in this while the client listens for the messages sent by the server
while (mRun) {
serverMessage = in.readLine();
if (serverMessage != null && mMessageListener != null) {
//call the method messageReceived from MyActivity class
mMessageListener.messageReceived(serverMessage);
Log.e("RESPONSE FROM SERVER", "S: Received Message: '" + serverMessage + "'");
}
serverMessage = null;
}
}
catch (Exception e)
{
Log.e("TCP SI Error", "SI: Error", e);
e.printStackTrace();
}
finally
{
//the socket must be closed. It is not possible to reconnect to this socket
// after it is closed, which means a new socket instance has to be created.
socket.close();
}
} catch (Exception e) {
Log.e("TCP SI Error", "SI: Error", e);
}
}
//Declare the interface. The method messageReceived(String message) will must be implemented in the MyActivity
//class at on asynckTask doInBackground
public interface OnMessageReceived {
public void messageReceived(String message);
}
}
现在我在netbeans IDE中有我的电脑服务器代码 这是我的服务器board.java
package com.aghilmohammed.server;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class ServerBoard extends JFrame
{
private static final long serialVersionUID = 1L;
private JTextArea messagesArea;
private JButton sendButton;
private JTextField message;
private JButton startServer;
private Socketserver mServer;
public ServerBoard()
{
super("ServerBoard");
JPanel panelFields = new JPanel();
panelFields.setLayout(new BoxLayout(panelFields, BoxLayout.X_AXIS));
JPanel panelFields2 = new JPanel();
panelFields2.setLayout(new BoxLayout(panelFields2, BoxLayout.X_AXIS));
// here we will have the text messages screen
messagesArea = new JTextArea();
messagesArea.setColumns(30);
messagesArea.setRows(10);
messagesArea.setEditable(false);
sendButton = new JButton("Send");
sendButton.addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e)
{
// get the message from the text view
String messageText = message.getText();
if(messageText.toString().trim().equals(""))
{
message.setText("");
message.requestFocus();
return;
}
// add message to the message area
messageText = "Server: " + messageText;
messagesArea.append("\n"+messageText);
// send the message to the client
mServer.sendMessage(messageText);
// clear text
message.setText("");
}
});
startServer = new JButton("Start");
startServer.addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e)
{
// disable the start button
startServer.setEnabled(false);
messagesArea.append("Server Started, now start Android Client");
// creates the object OnMessageReceived asked by the DispatcherServer
// constructor
mServer = new Socketserver(new Socketserver.OnMessageReceived()
{
@Override
// this method declared in the interface from DispatcherServer
// class is implemented here
// this method is actually a callback method, because it
// will run every time when it will be called from
// DispatcherServer class (at while)
public void messageReceived(String message)
{
System.out.println("Msg Recieved");
messagesArea.append("\n" + message);
}
});
mServer.start();
}
});
// the box where the user enters the text (EditText is called in
// Android)
message = new JTextField();
message.setSize(200, 20);
message.setScrollOffset(1);
// add the buttons and the text fields to the panel
JScrollPane sp = new JScrollPane(messagesArea);
panelFields.add(sp);
panelFields.add(startServer);
panelFields2.add(message);
panelFields2.add(sendButton);
getContentPane().add(panelFields);
getContentPane().add(panelFields2);
getContentPane().setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
setSize(300, 170);
setVisible(true);
}
}
这是我的Socketserver.java
package com.aghilmohammed.server;
import java.awt.Desktop;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.JFrame;
// The class extends the Thread class so we can receive and send messages at the same time
public class Socketserver extends Thread
{
private int SERVERPORT = 0001;
private ServerSocket serverSocket;
private Socket client = null;
private boolean running = false;
private PrintWriter mOut;
private OnMessageReceived messageListener;
public static void main(String[] args)
{
// opens the window where the messages will be received and sent
ServerBoard frame = new ServerBoard();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationRelativeTo(null); // *** center the app ***
frame.pack();
frame.setVisible(true);
}
// Constructor of the class messageListener listens for the messages
public Socketserver(OnMessageReceived messageListener)
{
this.messageListener = messageListener;
}
// Method to send the messages from server to client
//' message' is the message sent by the server
public void sendMessage(String message)
{
try
{
if (mOut != null && !mOut.checkError())
{
System.out.println(message);
// Here you can connect with database or else you can do what you want with static message
mOut.println(message);
mOut.flush();
}
}
catch (Exception e)
{
}
}
@Override
public void run()
{
super.run();
running = true;
try
{
System.out.println("PA: Connecting...");
// create a server socket. A server socket waits for requests to come in over the network.
serverSocket = new ServerSocket(SERVERPORT);
// create client socket... the method accept() listens for a
// connection to be made to this socket and accepts it.
try
{
client = serverSocket.accept();
System.out.println("S: Receiving...");
// sends the message to the client
mOut = new PrintWriter(new BufferedWriter(new OutputStreamWriter(client.getOutputStream())), true);
System.out.println("PA: Sent");
System.out.println("PA: Connecting Done.");
// read the message received from client
BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));
sendMessage("Server connected with Android Client now you can chat with socket server.");
// in this while we wait to receive messages from client (it's an infinite loop)
// this while it's like a listener for messages
while (running)
{
String message = in.readLine();
if (message != null && messageListener != null)
{
// call the method messageReceived from ServerBoard class
messageListener.messageReceived(message);
//
if(message.contains("notepad"))
//System.out.println(message);
{
Runtime runTime = Runtime.getRuntime();
Process process = runTime.exec("notepad");
}
//
if(message.contains("vlc"))
//System.out.println(message);
{
try {
Desktop.getDesktop().open(new File("E:/downloads/Cristiano Ronaldo, Real Madrid's all-time leading goalscorer._Full-HD.mp4"));
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(message.contains("skype"))
//System.out.println(message);
{
try {
Process p = Runtime.getRuntime().exec("C:/Program Files (x86)/Skype/Phone/Skype.exe");
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(message.contains("chrome"))
//System.out.println(message);
{
try {
Process p = Runtime.getRuntime().exec("C:/Program Files (x86)/Google/Chrome/Application/chrome.exe");
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if(message.contains("goodbye"))
//System.out.println(message);
{
System.exit(0);
}
}
}
}
catch (Exception e)
{
System.out.println("PA: Error: "+e.getMessage());
e.printStackTrace();
}
finally
{
client.close();
System.out.println("PA: Done.");
}
}
catch (Exception e)
{
System.out.println("PA: Error");
e.printStackTrace();
}
}
// Declare the interface. The method messageReceived(String message) will
// must be implemented in the ServerBoard
//class at on startServer button click
public interface OnMessageReceived
{
public void messageReceived(String message);
}
}
答案 0 :(得分：0)
我希望这会对你有所帮助..你可以将文件作为base64字符串发送，你可以将它作为普通的字符串参数传递给你的json数据......
FileOutputStream fout = new FileOutputStream(path + ".txt");
FileInputStream fin = new FileInputStream(path);
System.out.println("File Size:" + path.length());
ByteArrayOutputStream os = new ByteArrayOutputStream();
Base64OutputStream base64out = new Base64OutputStream(os,Base64.NO_WRAP);
byte[] buffer = new byte[3 * 512];
int len = 0;
while ((len = fin.read(buffer)) >= 0) {
base64out.write(buffer, 0, len);
}
System.out.println("Encoded Size:" + os.size());
base64out.flush();
base64out.close();//this did the tricks. Please see explanation.
String result = new String(os.toByteArray(), "UTF-8");
fout.write(os.toByteArray());
fout.flush();
fout.close();
os.close();
fin.close();
return result;