一个Socket应用示例
近日一个项目需要所其它项目进行集成，需要用Socket进行通讯，于是简单的学习了Socket编程方面的知识，做了个小应用示例，在此记录下，以增加印象，应用是比较简单，但从了解Socket到顺序跑通这个应用，还是花了点时间的，至少搞明白了如下几个问题：
1、从远程端（Server里面的Client、Client里面的Server）Socket的输入流（InputStream）中读取数据（一般用BufferedReader），从输入流（OutputStream）中写入数据（一般用PringWriter）
2、在使用BufferedReader的readLine()方法时，会造成当前线程的阻塞，直到能从InputStream读取到数据才继续往下走，所以如果在持续的从InputStream中读取（类似如下代码
while((line = reader.readLine()) != null){//...}import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;/** * @author xchao * */public class SocketServer {/** * @param args */public static void main(String[] args) {try {ServerSocket server = new ServerSocket(10086);while(true){Socket client = server.accept();System.out.println("a client(" + client.getInetAddress().getHostAddress() + ") is coming.");SocketHandlerThread clientThread = new SocketHandlerThread(client);clientThread.start();}} catch (IOException e) {e.printStackTrace();}}}class SocketHandlerThread extends Thread{private Socket client = null;public SocketHandlerThread(Socket client){this.client = client;}public void run(){try {try{InputStream inStream = client.getInputStream();OutputStream outStream = client.getOutputStream();PrintWriter out = new PrintWriter(outStream, true);out.println("Hello! Please enter BYE to exit.");BufferedReader in = new BufferedReader(new InputStreamReader(inStream));String line = null;boolean eof = false;while(!eof && (line = in.readLine()) != null){System.out.println("Client msg:" + line);out.println(line + "(reply from server)");if(line.trim().equals("BYE")){out.println("BYEBYE");eof = true;}}out.close();in.close();}finally{client.close();}} catch (IOException e) {e.printStackTrace();}}}import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintWriter;import java.net.InetAddress;import java.net.Socket;/** * @author xcaho * */public class SocketClient {/** * @param args */public static void main(String[] args) {try {Socket server = new Socket(InetAddress.getLocalHost(), 10086);try{OutputStream outStream = server.getOutputStream();PrintWriter out = new PrintWriter(outStream, true);BufferedReader readerSysIn = new BufferedReader(new InputStreamReader(System.in));String readLine = null;while(!((readLine = readerSysIn.readLine()).equals("BYE"))){out.println(readLine);}out.println("BYE");String line = null;BufferedReader reader = new BufferedReader(new InputStreamReader(server.getInputStream()));boolean eof = false;while(!eof && (line = reader.readLine()) != null){System.out.println(line);if(line.trim().equals("BYEBYE")){eof = true;}}out.close();reader.close();}finally{server.close();}} catch (IOException e) {e.printStackTrace();}}}