Socket数据传输（简单而使用）

package sterning; import java.io.BufferedOutputStream; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.FileOutputStream; public class ClientTest { private ClientSocket cs = null; private String ip = "localhost";// 设置成服务器IP private int port = 8821; private String sendMessage = "Windwos"; public ClientTest() { try { if (createConnection()) { sendMessage(); getMessage(); } } 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"); return true; } catch (Exception e) { System.out.print("连接服务器失败!" + "\n"); 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"); } } 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"); return; } try { //本地保存路径，文件名会自动从服务器端继承而来。 String savePath = "D:\\"; int bufferSize = 8192; byte[] buf = new byte[bufferSize]; int passedlen = 0; long len=0; 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"); 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"); fileOut.write(buf, 0, read); } System.out.println("接收完成，文件存为" + savePath + "\n"); fileOut.close(); } catch (Exception e) { System.out.println("接收消息错误" + "\n"); return; } } public static void main(String arg[]) { new ClientTest(); } }