SocketTimeoutException: Read timed out请各位帮帮忙！！！

[syc574937516]

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;

//客户端
public class SocketClient {

	public static void main(String[] args){
		try {
			Socket socket=new Socket("127.0.0.1",21112);
			socket.setSoTimeout(10*1000);
			DataInputStream in=new DataInputStream(new BufferedInputStream(socket.getInputStream()));
			OutputStream out =socket.getOutputStream();
			out.write("client".getBytes());
			out.flush();
			int r=0;
                        //数据不能读完，但是已经没有数据了
			while((r=in.read())!=-1){
				System.out.print((char)r);
			}
			System.out.println("end");
		}  catch (Exception e) {
			e.printStackTrace();
		}
	}

}

import java.io.BufferedOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
//服务端
public class SocketServer {

	public static void main(String[] args) {
		try {
			ServerSocket server=new ServerSocket(21112);
			Socket socket=null;
			socket=server.accept();
			System.out.println("有客户端连接了");
			DataOutputStream out=new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
			InputStream in=socket.getInputStream();
			out.write("server".getBytes());
			out.flush();
			int r=0;
			while((r=in.read())!=-1){
				System.out.print((char)r);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

先运行服务端，然后运行客户端，
服务端输出：有客户端连接了 client
客户端输出：server
超时后服务端错误为：java.net.SocketException: Connection reset
客户端错误为：java.net.SocketTimeoutException: Read timed out
按照网上方法试过还是不行，不知道问题在哪里？

[oh_Maxy]

问题似乎出在in.read()方法那里，会一直阻塞等待，结果超时了。 如果只是一行输入，可以如下操作：

//客户端
public class SocketClient {

    public static void main(String args[]) {

        try {
            Socket socket = new Socket("127.0.0.1", 21112);
            // 由系统标准输入设备构造BufferedReader对象
            PrintWriter os = new PrintWriter(socket.getOutputStream());
            // 由Socket对象得到输出流，并构造PrintWriter对象
            BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            // 由Socket对象得到输入流，并构造相应的BufferedReader对象
            String readline = "client";
                os.println(readline);
                // 将从系统标准输入读入的字符串输出到Server
                os.flush();
                // 刷新输出流，使Server马上收到该字符串
                System.out.println("Client:" + readline);
                // 在系统标准输出上打印读入的字符串
                System.out.println("Server:" + is.readLine());
                // 从Server读入一字符串，并打印到标准输出上
            os.close(); // 关闭Socket输出流
            is.close(); // 关闭Socket输入流
            socket.close(); // 关闭Socket
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}

//服务端
public class SocketServer {

    public static void main(String[] args) {
        try {
            ServerSocket server = new ServerSocket(21112);
            Socket socket = null;
            socket = server.accept();
            System.out.println("有客户端连接了");
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            PrintWriter out = new PrintWriter(socket.getOutputStream());
            int r = -1;
            while ((r = in.read()) != -1) {
                System.out.print((char) r);
            }
            out.write("server");
            out.flush();
            out.close(); // 关闭Socket输出流
            in.close(); // 关闭Socket输入流
            socket.close(); // 关闭Socket
            server.close(); // 关闭ServerSocket
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

参考：http://www.cnblogs.com/linzheng/archive/2011/01/23/1942328.html

[syc574937516]

谢谢版主的回答，输入不止一行。感谢提供的参考链接！