方式一：同步阻塞方式（BIO）：
服务器端（Server）：
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package com.ietree.basicskill.socket.mode1;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
/**
* 服务端
*/
public class Server {
// 端口号
final static int PORT = 8765;
public static void main(String[] args) {
ServerSocket server = null;
try {
server = new ServerSocket(PORT);
System.out.println("Server start......");
// 进行阻塞
Socket socket = server.accept();
// 创建一个程序执行客户端的任务
new Thread(new ServerHandler(socket)).start();
} catch (IOException e) {
e.printStackTrace();
} finally {
if(server != null){
try {
server.close();
} catch (IOException e) {
e.printStackTrace();
}
}
server = null;
}
}
}
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采用多线程来处理接收到的请求（ServerHandler）：
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package com.ietree.basicskill.socket.mode1;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
public class ServerHandler implements Runnable {
private Socket socket;
public ServerHandler(Socket socket) {
this.socket = socket;
}
@Override
public void run() {
BufferedReader in = null;
PrintWriter out = null;
try {
in = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
out = new PrintWriter(this.socket.getOutputStream(), true);
String body = null;
while (true) {
body = in.readLine();
if(body == null){
break;
}
System.out.println("Server: " + body);
out.println("服务器端回送响应的数据。");
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if(in != null){
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(out != null){
try {
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
if(socket != null){
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
socket = null;
}
}
}
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客户端（Client）:
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package com.ietree.basicskill.socket.mode1;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
/**
* 客户端
*/
public class Client {
final static String ADDRESS = "127.0.0.1";
final static int PORT = 8765;
public static void main(String[] args) {
Socket socket = null;
BufferedReader in = null;
PrintWriter out = null;
try {
socket = new Socket(ADDRESS, PORT);
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(), true);
// 向服务器端发送数据
out.println("接收到客户端的请求数据......");
String response = in.readLine();
System.out.println("Client: " + response);
} catch (Exception e) {
e.printStackTrace();
} finally {
if(in != null){
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(out != null){
try {
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
if(socket != null){
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
socket = null;
}
}
}
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程序输出：
Server：
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Server start......
Server: 接收到客户端的请求数据......
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Client：
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1
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Client: 服务器端回送响应的数据。
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