LengthCalculator.java
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package com.genersoft.iot.vmp;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
public class LengthCalculator extends Thread{
//socket为成员变量，来接收服务端socket实例
private Socket socket;
public LengthCalculator(Socket socket){
this.socket = socket;
}
// run()保存了所有的业务逻辑
public void run(){
try {
//获取socket的输出流
OutputStream os = socket.getOutputStream();
//获取socket的输入流
InputStream is = socket.getInputStream();
int ch = 0;
//buff用来读取输入的内容，存成byte数组，ch用来获取读取数组的字节数
byte[] buff = new byte[1024];
ch = is.read(buff);
//将接收流的byte数组转换成字符串，这里获取的内容是客户端发送过来的字节数组
String content = new String(buff,0,ch);
System.out.println(content);
//往输出流里写入获得的字符串的长度，回发给客户端
os.write(String.valueOf(content.length()).getBytes());
//一定要关闭输入输出流以及socket
is.close();
os.close();
socket.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}