Java.net.NoRouteToHostException:No Route to host

After the system service is turned on, you cannot view the connection success via Web page or eclipse, and connect to the Times error:

Java.net.NoRouteToHostException:No Route to host

The findings of the Internet search are as follows:

There are no routes connecting to this computer, the remote host cannot be reached,

Cause: Firewall interference or intermediate router downtime

(using Telnet to see if the machine is connected properly, the results are as follows:

Trying 199.155.122.91 ...
Telnet:connect to address 199.155.122.91:no route to host
Telnet:unable to connect to remote Host:no route to host)

the solution is: and firewall rules, close the firewall can be

After you close the firewall, the results are as follows:

Trying 199.155.122.91 ...
Telnet:connect to address 199.155.122.91:connection refused
Telnet:unable to connect to remote Host:connection refused