求助：从GitHub下载CalendarFX后，如何在Eclipse中构建生成JAR文件？

Hey there! Let’s walk through fixing this build issue so you can get those CalendarFX JAR files. I’ve helped with similar Maven/Eclipse build problems before, so let’s start with the basics and work our way up:

First, Confirm Prerequisites #

• Make sure you’re running Java 11 or newer—CalendarFX requires this minimum version to build properly.
• Double-check Eclipse has the Maven Integration for Eclipse (M2E) plugin installed. This is non-negotiable for handling the project’s Maven setup.
• Ensure your Eclipse workspace is using the correct JRE (Java 11+)—we’ll fix this if it’s off later.

Import the Project the Right Way #

1. Open Eclipse and go to File > Import > Maven > Existing Maven Projects.
2. Navigate to the root folder of your downloaded CalendarFX repo, then select all the listed modules (check every box) and click Finish.
3. Give Eclipse a minute to resolve all Maven dependencies—you’ll see progress in the bottom-right corner. If any dependencies stay missing, we’ll fix that next.

Run the Maven Build to Generate JARs #

• Right-click the root CalendarFX project in the Package Explorer.
• Hover over Run As and pick Maven install. This triggers a full build that compiles all modules and drops JARs into each module’s target folder.

Fix Common Roadblocks #

If the build fails, try these fixes based on typical issues:

• Missing Dependencies: Right-click the project > Maven > Update Project. Check the box for "Force Update of Snapshots/Releases" and hit OK. This refreshes all dependencies from Maven Central.
• Java Version Mismatch:
  1. Go to Window > Preferences > Java > Installed JREs and make sure Java 11+ is listed and selected.
  2. Right-click the project > Properties > Java Build Path > Libraries and ensure the JRE System Library points to Java 11+.
  3. Head to Java Compiler in the same Properties window and set the compliance level to 11.
• Test Failures Blocking Build: If unit tests are breaking the build, skip them temporarily by running Maven install with the -DskipTests flag. To do this: right-click the project > Run As > Maven Build..., enter install -DskipTests in the Goals field, then click Run.
• Missing M2E Plugin: If you don’t see Maven options in Eclipse, go to Help > Eclipse Marketplace, search for "Maven Integration for Eclipse", install it, and restart Eclipse.

Where to Find Your JARs #

Once the build succeeds, each module’s JAR will be in:
[Module Folder]/target/[Module-Name]-[Version].jar
For example, the core CalendarFX library JAR lives in calendarfx-core/target/.

If you hit a specific error (like a red error message in the Console view), share that exact text and we’ll troubleshoot it further!

内容的提问来源于stack exchange，提问作者Andres De Pereda Cruz