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.但是我不知道如何将数组写入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();
}
}
解决方法
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.
寄件人
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();
...