java搭建socket服务器端_Java创建服务器端serverSocket和客户端socket
时间: 2023-09-16 10:15:57 浏览: 41
好的,我可以为你解答这个问题。首先我们需要知道,Socket是一种网络通信协议,用于实现网络上的进程间通信。在Java中,我们可以使用ServerSocket和Socket类来创建服务器端和客户端的Socket连接。以下是Java搭建Socket服务器端的基本步骤:
1. 创建ServerSocket对象,指定服务器端口号。
```
ServerSocket serverSocket = new ServerSocket(8888);
```
2. 调用ServerSocket的accept()方法接收客户端的连接请求,并返回一个Socket对象。
```
Socket socket = serverSocket.accept();
```
3. 使用Socket对象的输入输出流进行数据通信。
```
InputStream is = socket.getInputStream();
OutputStream os = socket.getOutputStream();
```
4. 关闭Socket连接。
```
socket.close();
```
以上就是Java搭建Socket服务器端的基本步骤。当然,在实际开发中,我们还需要考虑多线程、异常处理等问题。希望这些信息对你有所帮助。
相关问题
java socket 通信客户端和服务器端
Java中可以通过Socket实现客户端和服务器端之间的网络通信。下面是一个简单的例子:
服务器端:
```java
import java.net.*;
import java.io.*;
public class Server {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(8888);
} catch (IOException e) {
System.err.println("Could not listen on port: 8888.");
System.exit(1);
}
Socket clientSocket = null;
try {
System.out.println("Waiting for connection...");
clientSocket = serverSocket.accept();
System.out.println("Connection established with: " + clientSocket.getInetAddress().getHostAddress());
} catch (IOException e) {
System.err.println("Accept failed.");
System.exit(1);
}
PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
String inputLine, outputLine;
while ((inputLine = in.readLine()) != null) {
System.out.println("Received message: " + inputLine);
outputLine = "Server received message: " + inputLine;
out.println(outputLine);
if (outputLine.equals("bye"))
break;
}
out.close();
in.close();
clientSocket.close();
serverSocket.close();
}
}
```
客户端:
```java
import java.net.*;
import java.io.*;
public class Client {
public static void main(String[] args) throws IOException {
Socket socket = null;
PrintWriter out = null;
BufferedReader in = null;
try {
socket = new Socket("localhost", 8888);
out = new PrintWriter(socket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Unknown host: localhost.");
System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for the connection to: localhost.");
System.exit(1);
}
BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
String userInput;
while ((userInput = stdIn.readLine()) != null) {
out.println(userInput);
String serverResponse = in.readLine();
System.out.println("Server response: " + serverResponse);
if (serverResponse.equals("bye"))
break;
}
out.close();
in.close();
stdIn.close();
socket.close();
}
}
```
以上代码实现了一个简单的客户端和服务器端的通信,可以通过命令行输入消息进行交互。
java客户端和服务器端
Java是一种面向对象的编程语言,可以用来开发客户端和服务器端应用程序。下面是一个简单的Java客户端/服务器端的例子:
服务器端:
```java
import java.net.*;
import java.io.*;
public class Server {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(8080);
} catch (IOException e) {
System.err.println("Could not listen on port: 8080.");
System.exit(1);
}
Socket clientSocket = null;
try {
System.out.println("Waiting for connection...");
clientSocket = serverSocket.accept();
System.out.println("Connection established!");
} catch (IOException e) {
System.err.println("Accept failed.");
System.exit(1);
}
PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
System.out.println("Received message: " + inputLine);
out.println(inputLine);
}
out.close();
in.close();
clientSocket.close();
serverSocket.close();
}
}
```
客户端:
```java
import java.io.*;
import java.net.*;
public class Client {
public static void main(String[] args) throws IOException {
Socket clientSocket = null;
PrintWriter out = null;
BufferedReader in = null;
try {
clientSocket = new Socket("localhost", 8080);
out = new PrintWriter(clientSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
} catch (UnknownHostException e) {
System.err.println("Don't know about host: localhost.");
System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for the connection to: localhost.");
System.exit(1);
}
BufferedReader stdIn = new BufferedReader(new InputStreamReader(System.in));
String userInput;
while ((userInput = stdIn.readLine()) != null) {
out.println(userInput);
System.out.println("Server response: " + in.readLine());
}
out.close();
in.close();
stdIn.close();
clientSocket.close();
}
}
```
这个例子展示了一个简单的客户端/服务器端应用程序,服务器端绑定到本地8080端口并等待客户端连接,当客户端连接成功后,服务器端接收客户端发送的消息并将其原样返回给客户端。客户端连接到服务器端并发送消息,随后接收服务器端的响应消息并将其打印到控制台。