Eclipse automatically copies the jar packages referenced in the project build path to the Lib folder under Web-inf

When using Eclipse for Java Web Development, the jar referenced in the web app needs to be copied to the Lib folder under Web-inf, otherwise the classnotfound exception often occurs.

The following method allows you to automatically copy the jar package referenced in the project build path to the Lib folder under Web-inf without having to manually copy the jar package, as follows:

1. Right-click the project and select Properties

Select Deployment Assembly, such as:

2. Click the Add button on the right, such as:

3. Select the Java Building Path entries option, such as:

Select all the jars referenced in all projects and click Finish. Redeploy to the server and automatically copy the jar package referenced in build path to the Lib folder under Web-inf after running.

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Eclipse automatically copies the jar packages referenced in the project build path to the Lib folder under Web-inf