在中放入一些sysout， TCP客户端的所有空捕获-我想你会找出失败的原因.

您至少应该将e.printStackTrace()留在那里.***弄清楚什么时候弹出异常.

put some sysout in that ALL THE empty catch of the TCP-Client - I guess you''ll find out why it fails.

You should at least leave the e.printStackTrace() in there. Better to figure when an exception pops.