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分享socket客户端往服务端发送数据异常
客户端code
服务端code
我的想法是每隔3秒往服务端发送一个数据包，现在的情况是会抛异常：
java.net.SocketException: Software caused connection abort: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(Unknown Source)
at java.net.SocketOutputStream.write(Unknown Source)
at com.ls.test.Client.run(Client.java:44)
at com.ls.test.Client.sendMsg(Client.java:28)
at com.ls.test.Client.main(Client.java:57)
我发现可能是server端把socket close的原因所以去掉了关闭代码:
finally {
if(s!=null)
try {
s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
但现在服务端确只接受一次请求了，不知道为什么
public class Client implements Runnable{
private static Socket s;
private Socket getInstance(){
if(s==null){
try {
return s=new Socket("127.0.0.1",8000);
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return s;
}
public void sendMsg() {
while(true){
try {
run();
Thread.sleep(3000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
@Override
public void run() {
System.out.println("come into run");
try {
Socket c = getInstance();
OutputStream ops =c.getOutputStream();
ops.write(new byte[]{0000});
ops.flush();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException ex) {
// TODO Auto-generated catch block
ex.printStackTrace();
}
}
public static void main(String[] args) {
Client c = new Client();
c.sendMsg();
}
}
服务端code
public class Server {
private ServerSocket serverSocket;
public Server(){
try {
serverSocket = new ServerSocket();
serverSocket.bind(new InetSocketAddress(8000));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("服务启动");
}
public void service() {
while (true) {
Socket s = null;
try {
s = serverSocket.accept();
System.out.println("come a new request~ "+s.getInetAddress()+":"+s.getPort());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
if(s!=null)
try {
s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Server server = new Server();
server.service();
}
}
我的想法是每隔3秒往服务端发送一个数据包，现在的情况是会抛异常：
java.net.SocketException: Software caused connection abort: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(Unknown Source)
at java.net.SocketOutputStream.write(Unknown Source)
at com.ls.test.Client.run(Client.java:44)
at com.ls.test.Client.sendMsg(Client.java:28)
at com.ls.test.Client.main(Client.java:57)
我发现可能是server端把socket close的原因所以去掉了关闭代码:
finally {
if(s!=null)
try {
s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
但现在服务端确只接受一次请求了，不知道为什么
...全文
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javaliuliu 2013-10-29
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我懂了，谢谢，我把监听写到while里了，每次请求都会重复监听，一直阻塞了。tks
rockets311 2013-10-15
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serverSocket.accept();//这一行会被阻塞private Socket getInstance(){}rockets311 2013-10-15
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是的，我的客户端需求只要求建立一个socket连接。所以用了单例模式，但服务端我的问题出在哪呀？感觉写法差不多，为什么你的能一直监听到消息，我的只能接受一次[/quote]
请楼主再仔细考虑一下，然后再看我在6楼的回复。我觉得已经说得够详细了。
javaliuliu 2013-10-15
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是的，我的客户端需求只要求建立一个socket连接。所以用了单例模式，但服务端我的问题出在哪呀？感觉写法差不多，为什么你的能一直监听到消息，我的只能接受一次
rockets311 2013-10-14
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import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
public class Client implements Runnable
{
private static Socket s;
private Socket getInstance()
{
if (s == null)
{
try
{
return s = new Socket("127.0.0.1", 8000);
}
catch (IOException e)
{
e.printStackTrace();
}
}
return s;
}
@Override
public void run()
{
while (true)
{
try
{
System.out.println("come into run");
Socket c = getInstance();
OutputStream ops = c.getOutputStream();
ops.write(new byte[]
{
0000
});
ops.flush();
Thread.sleep(3000);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
public static void main(String[] args)
{
Client c = new Client();
new Thread(c).start();
}
}javaliuliu 2013-10-14
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这次ok了。非常感谢~
我对比了我们之间的代码，发现区别在server端的接收上你的代码是：
InputStream is = s.getInputStream();
BufferedReader buf = new BufferedReader(new InputStreamReader(is));
String str = null;
while(null != (str = buf.readLine()))
{
System.out.println("come a new request~ " + s.getInetAddress()
+ ":" + s.getPort() + str + new SimpleDateFormat("mm:ss").format(new Date()));
}
s = serverSocket.accept();
System.out.println("come a new request~ "+s.getInetAddress()+":"+s.getPort());
rockets311 2013-10-14
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仔细测了一下：
服务端：
客户端：
结果：
服务端：
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Server implements Runnable
{
private ServerSocket serverSocket;
private Socket s;
public Server()
{
try
{
serverSocket = new ServerSocket();
serverSocket.bind(new InetSocketAddress(8000));
s = serverSocket.accept();
}
catch (IOException e)
{
e.printStackTrace();
}
System.out.println("服务启动");
}
public void run()
{
while (true)
{
try
{
InputStream is = s.getInputStream();
BufferedReader buf = new BufferedReader(new InputStreamReader(is));
String str = null;
while(null != (str = buf.readLine()))
{
System.out.println("come a new request~ " + s.getInetAddress()
+ ":" + s.getPort() + str + new SimpleDateFormat("mm:ss").format(new Date()));
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
public static void main(String[] args)
{
Server server = new Server();
new Thread(server).start();
}
}
客户端：
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Client implements Runnable
{
private static Socket s;
private Socket getInstance()
{
if (s == null)
{
System.out.println("nullllllllllll");
try
{
return s = new Socket("127.0.0.1", 8000);
}
catch (IOException e)
{
e.printStackTrace();
}
}
return s;
}
public void run()
{
while (true)
{
try
{
String d = new SimpleDateFormat("mm:ss").format(new Date()) + System.getProperty("line.separator");
System.out.println("come into run" + d);
Socket c = getInstance();
OutputStream ops = c.getOutputStream();
ops.write(d.getBytes());
ops.flush();
Thread.sleep(3000);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
public static void main(String[] args)
{
Client c = new Client();
new Thread(c).start();
}
}
结果：
rockets311 2013-10-14
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import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.Socket;
public class Server implements Runnable
{
private ServerSocket serverSocket;
private Socket s;
public Server()
{
try
{
serverSocket = new ServerSocket();
serverSocket.bind(new InetSocketAddress(8000));
}
catch (IOException e)
{
e.printStackTrace();
}
System.out.println("服务启动");
}
public void run()
{
while (true)
{
try
{
if(null == s)
s = serverSocket.accept();
InputStream is = s.getInputStream();
DataInputStream dis = new DataInputStream(is);
String str = null;
while(null != (str = dis.readUTF()))
{
System.out.println("come a new request~ " + s.getInetAddress()
+ ":" + s.getPort() + str);
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
public static void main(String[] args)
{
Server server = new Server();
new Thread(server).start();
}
}javaliuliu 2013-10-14
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我用了你的代码，在服务端只会接收一次请求，不知道为什么
