First, if the development project in the intranet, because the computer can not surf the Internet, may appear in the Import Open source framework jar package, the configuration XML file is, does not appear syntax detection and syntax hints, eclipse also prompts the alarm:
No grammar constraints (DTD or XML Schema) referenced in the document
Workaround 1 Import XML-related constraints
Xml-->xml catalog, adding user Specified Entries
Solution 2: Let Eclipse set up the proxy online
Window-->preferences-->general-->network connections
Select Manual Proxy configuration: Fill in the HTTP proxy and HTTPS proxy and port
In addition, if the agent needs to use the account number and password need to select Enable proxy authentication,
Then fill in the user name and password
Active Provider: Select Manual
Proxy bypass: Filtering to the intranet IP, such as a git server, or after setting up the agent, cannot pull and push code from the GIT server
This article from "Small Fish Blog" blog, declined reprint!
Eclipse Settings Agent Online