I click "download sources and documentation" in Intellij Idea Community Edition 12.1.4 and get error that sources can not be downloaded. But when I try:
mvn dependency:sources
All sources are downloaded.
What is the problem?
P.S. I have checked that Idea use the same maven that use in console. There are not any "off line" mode buttons triggered in Idea.
I had the same issue with IntelliJ IDEA 2016.1.3 and Maven 3.2.1. No solution mentioned here was working. In my case a newer Maven version fixed the issue. With Maven 3.3.9 IDEA can now download the sources.
"I had the same issue with IntelliJ IDEA 2016.1.3 and Maven 3.2.1. No solution mentioned here was working. In my case a newer Maven version fixed the issue. With Maven 3.3.9 IDEA can now download the sources."
anything's already in the former answers...
mvn dependency:sources
maybe it is not a full IDE solution, but hope it solves your issue
I changed the java version in pom.xml to match my jdk's version and it worked for me.