作业帮I/O exception (java.net.ConnectException) caught when processing request:Connection timed out:co
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I/O exception (java.net.ConnectException) caught when processing request:Connection timed out:co
I/O exception (java.net.ConnectException) caught when processing request:Connection timed out:co
I/O exception (java.net.ConnectException) caught when processing request:Connection timed out:co
连接超时,
看看服务开没开
服务器ip 和端口 用户名和密码
我只想到这些