[英]Java Socket exception
I am trying to write a simple client server program in Java :- Running both server and client code on the same machine...but while running getting an error :- 我试图用Java编写一个简单的客户端服务器程序:-在同一台机器上同时运行服务器和客户端代码...但是在运行时出现错误:-
java.net.ConnectException: Connection refused: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(Unknown Source) at java.net.PlainSocketImpl.connectToAddress(Unknown Source) at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.(Unknown Source) at java.net.Socket.(Unknown Source) at Requester.run(Requester.java:13) at Requester.main(Requester.java:68) Exception in thread "main" java.lang.NullPointerException at Requester.run(Requester.java:45) at Requester.main(Requester.java:68)
Can anyone help! 谁能帮忙!
Is the port you are trying to connect to open? 您尝试连接的端口是否打开? Is there an active firewall that may block the request?
是否有活动的防火墙可能阻止请求?
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