在服务器端和客户端传输图片和文件.docVIP

Java基于Socket文件传输示例 1.服务器端 package sterning; import java.io.BufferedInputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileInputStream;import java.net.ServerSocket;import java.net.Socket; public class ServerTest {??? int port = 8821; ??? void start() {??????? Socket s = null;??????? try {??????????? ServerSocket ss = new ServerSocket(port);??????????? while (true) {??????????????? // 选择进行传输的文件??????????????? String filePath = D:\\lib.rar;??????????????? File fi = new File(filePath); ??????????????? System.out.println(文件长度: + (int) fi.length()); ??????????????? // public Socket accept() throws??????????????? // IOException侦听并接受到此套接字的连接。此方法在进行连接之前一直阻塞。 ??????????????? s = ss.accept();??????????????? System.out.println(建立socket链接);??????????????? DataInputStream dis = new DataInputStream(new BufferedInputStream(s.getInputStream()));??????????????? dis.readByte(); ??????????????? DataInputStream fis = new DataInputStream(new BufferedInputStream(new FileInputStream(filePath)));??????????????? DataOutputStream ps = new DataOutputStream(s.getOutputStream());??????????????? //将文件名及长度传给客户端。这里要真正适用所有平台，例如中文名的处理，还需要加工，具体可以参见Think In Java 4th里有现成的代码。??????????????? ps.writeUTF(fi.getName());??????????????? ps.flush();??????????????? ps.writeLong((long) fi.length());??????????????? ps.flush(); ??????????????? int bufferSize = 8192;??????????????? byte[] buf = new byte[bufferSize]; ??????????????? while (true) {??????????????????? int read = 0;??????????????????? if (fis != null) {??????????????????????? read = fis.read(buf);??????????????????? } ??????????????????? if (read == -1) {??????????????????????? break;??????????????????? }??????????????????? ps.write(buf, 0, read);??????????????? }??????????????? ps.flush();??????????????? // 注意关闭socket链接哦，不然客户端会等待server的数据过来，??????????????? // 直到socket超时，导致数据不完整。??????????????? ??????????????? fis.close();??????????????? s.close();?????????