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Copy pathITDragonBIOClient.java
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54 lines (49 loc) · 1.59 KB
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package IO.BIO;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.util.Random;
/**
* BIO 客户端 Socket : 向服务端发送连接 PrintWriter : 向服务端传递参数 BufferedReader : 从服务端接收参数
*/
public class ITDragonBIOClient {
private static Integer PORT = 8888;
private static String IP_ADDRESS = "127.0.0.1";
public static void main(String[] args) {
for (int i = 0; i < 10; i++) {
clientReq(i);
}
}
private static void clientReq(int i) {
Socket socket = null;
BufferedReader reader = null;
PrintWriter writer = null;
try {
socket = new Socket(IP_ADDRESS, PORT); // Socket
// 发起连接操作。连接成功后，双方通过输入和输出流进行同步阻塞式通信
reader = new BufferedReader(new InputStreamReader(socket.getInputStream())); // 获取返回内容
writer = new PrintWriter(socket.getOutputStream(), true);
String[] operators = { "+", "-", "*", "/" };
Random random = new Random(System.currentTimeMillis());
String expression = random.nextInt(10) + operators[random.nextInt(4)] + (random.nextInt(10) + 1);
writer.println(expression); // 向服务器端发送数据
System.out.println(i + " 客户端打印返回数据 : " + reader.readLine());
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (null != reader) {
reader.close();
}
if (null != socket) {
socket.close();
socket = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}