当我实例化一个socket对象时,
Socket sk = new Socket("192.168.0.156","8886");
一编译出现下面的错误,不知为什么
java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:320)
at java.net.PlainSocketImpl.connectToAddressPlainSocketImpl.java:133)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:120)
at java.net.Socket.(Socket.java:273)
at java.net.Socket.(Socket.java:127)
at softbrain.TestPingApp.main(TestPingApp.java:33)