TCP客户端和服务端传输的问题 - 黑马程序员技术交流社区

//这是客户端的代码import java.net.*;
import java.io.*;
class TCPClient2
{
public static void main(String[] args)throws Exception
{
Socket socket = new Socket(InetAddress.getLocalHost().getHostAddress(),10010);
OutputStream os = socket.getOutputStream();
os.write("tcp数据来了".getBytes());
InputStream is = socket.getInputStream();
byte[] buf = new byte[1024];
int len = 0;
String str = "";
while((len = is.read(buf))!= -1)
{
str = str + new String(buf,0,len);
}
System.out.println(str); socket.close();
}
}//这是服务端的代码
import java.net.*;
import java.io.*;
class TCPServer2
{
public static void main(String[] args) throws Exception
{
ServerSocket ss = new ServerSocket(10010 );Socket socket = ss.accept(); //因为这个客户端对象发送数据,那么我们就可以用这个客户端读取数据
InputStream is = socket.getInputStream();
byte[] buf = new byte[1024];
int len = 0;
String str ="";
while((len = is.read(buf)) != -1)//阻塞方法
{
str += str + new String(buf,0,len);
}
System.out.println("IP:"+socket.getInetAddress().getHostAddress()+" 数据:"+str); //返回数据给客户端
OutputStream os = socket.getOutputStream();
os.write("服务端数据已经收到,谢谢".getBytes());
//关闭资源
socket.close();
ss.close();
}
}

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