"1. when I choose the install/update the JDVD."
How are you choosing that? Central? Help > Install? Some other way?
"2. here is the error info as follows:"
Is there any more information in the Error Log / console log?
If you go refresh all the metadata for all the update sites in your Eclipse / JBDS (Preferences > Update/Install > Available Software Sites > select a site > Refresh) and then restart Eclipse / JBDS, does that help?
I resolve this problem.thanks!
How? Can you provide some insight re: what you did, and if it worked, so that others might also benefit? Did my suggestion work?
My network problem,I change the proxy to VPN,it's ok!