clienttest.java

一个用java开发的文件传输系统

package send;


import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import interfaces.MainInter; 

public class ClientTest {
    private ClientSocket cs = null;
    private String ip = "192.168.1.10";// 设置成服务器IP
    private int port = 8821;
    private String sendMessage = "Windwos";   
    public String savePath;//保存路径
    public ClientTest() {
        try {
            if (createConnection()) {
                sendMessage();
                getMessage();
                MainInter.jlabel1.setText("");//消息清空
                MainInter.jlabel2.setText("");//消息清空
                MainInter.jlabel3.setText("");//消息清空
            }

        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
    private boolean createConnection() {
        cs = new ClientSocket(ip, port);
        try {
            cs.CreateConnection();
            //System.out.print("连接服务器成功!" + "\n");
            MainInter.jlabel1.setText(ip+"连接成功!");
            return true;
        } catch (Exception e) {
           // System.out.print("连接服务器失败!" + "\n");
           MainInter.jlabel3.setText("没有客户端连接");
            return false;
        }

    }

    private void sendMessage() {
        if (cs == null)
            return;
        try {
            cs.sendMessage(sendMessage);
        } catch (Exception e) {
           // System.out.print("发送消息失败!" + "\n");
            MainInter.jlabel3.setText("发送消息失败!");
        }
    }

    private void getMessage() {
    	 
        if (cs == null)
            return;
        DataInputStream inputStream = null;
        try {
            inputStream = cs.getMessageStream();
        } catch (Exception e) {
            //System.out.print("接收消息缓存错误\n");
            MainInter.jlabel3.setText("接收消息缓存错误!");
            return;
        }

        try {
            int bufferSize = 8192;
            byte[] buf = new byte[bufferSize];
            int passedlen = 0;
            long len=0;
            savePath="G:\\";
            savePath += inputStream.readUTF();
            DataOutputStream fileOut = new DataOutputStream(new BufferedOutputStream(new BufferedOutputStream(new FileOutputStream(savePath))));
            len = inputStream.readLong();
            
           // System.out.println("文件的长度为:" + len + "\n");
           //System.out.println("开始接收文件!" + "\n");
           // MainInter.jlabel1.setText("");
            MainInter.jlabel1.setText("文件的长度为:" + len +"  KB");
            MainInter.jlabel2.setText("开始接收文件!");
            while (true) {
                int read = 0;
                if (inputStream != null) {
                    read = inputStream.read(buf);
                }
                passedlen += read;
                if (read == -1) {
                    break;
                }
                //下面进度条本为图形界面的prograssBar做的，这里如果是打文件，可能会重复打印出一些相同的百分比
                //System.out.println("文件接收了" +  (passedlen * 100/ len) + "%\n");
                MainInter.jlabel2.setText("文件接收了" +  (passedlen * 100/ len) + "%" );
                fileOut.write(buf, 0, read);
            }
           //System.out.println("接收完成，文件存为" + savePath + "\n");
           MainInter.jlabel2.setText("接收完成，文件存为" + savePath );

            fileOut.close();
        } catch (Exception e) {
           //System.out.println("接收消息错误" + "\n");
           MainInter.jlabel3.setText("接收消息错误");
            return;
        }
    }

   
}