我通过从 commons.apache 目录 和来自 Maven 存储库.每次我向项目添加新 JAR 时，应用程序都会因不同的错误(未找到不同的类)而崩溃，直到我从 Maven 存储库下载所有 JAR 文件.从网上仓库下载​​了很多JAR文件后，大部分JAR相关的问题似乎都解决了.

I resolved the problem by downloading the JAR files from commons.apache directory and from Maven repositories. Each time I added a new JAR to the project, the application crashed with a different error (a different class was not found) until I downloaded all of the JAR files from the Maven repository. After downloading a lot of JAR files from the online repositories, most of the JAR related problems seem to be resolved.