本文介绍了如何在Java中将数组写入outputStream的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想通过Socket发送多个随机值。我认为数组是发送它们的最佳方式。但我不知道如何将数组写入Socket outputStream?
I want to send more than one random value though Socket . I think array is the best way to send them..But I don't know how to write an array to Socket outputStream ?
我的java类
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.io.*;
import java.util.Random;
class NodeCommunicator {
public static void main(String[] args) {
try {
Socket nodejs = new Socket("localhost", 8181);
Random randomGenerator = new Random();
for (int idx = 1; idx <= 1000; ++idx){
Thread.sleep(500);
int randomInt = randomGenerator.nextInt(35);
sendMessage(nodejs, randomInt + " ");
System.out.println(randomInt);
}
while(true){
Thread.sleep(1000);
}
} catch (Exception e) {
System.out.println("Connection terminated..Closing Java Client");
System.out.println("Error :- "+e);
}
}
public static void sendMessage(Socket s, String message) throws IOException {
s.getOutputStream().write(message.getBytes("UTF-8"));
s.getOutputStream().flush();
}
}
推荐答案
使用java.io.DataOutputStream / DataInputStream对,他们知道如何读取整数。将信息作为长度+随机数的数据包发送。
Use java.io.DataOutputStream / DataInputStream pair, they know how to read ints. Send info as a packet of length + random numbers.
发件人
Socket sock = new Socket("localhost", 8181);
DataOutputStream out = new DataOutputStream(sock.getOutputStream());
out.writeInt(len);
for(int i = 0; i < len; i++) {
out.writeInt(randomGenerator.nextInt(35))
...
接收器
DataInputStream in = new DataInputStream(sock.getInputStream());
int len = in.readInt();
for(int i = 0; i < len; i++) {
int next = in.readInt();
...
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