我想使用opencsv在 project这是用 Java 14 构建的，使用 Java 模块系统。所以它有一个 module-info.java 文件。
从单元测试启动时，对 opencsv 中方法的调用工作正常，但从 Main.main() 方法启动时会引发异常。 如果我删除 module-info.java 文件，该方法在这两种情况下都可以正常工作。
模块信息文件很简单，但可能是错误的:
module opencsvDemo {
requires opencsv;
opens demo;
}
当从 Main.main() 运行时，我得到
Exception in thread "main" java.lang.NoClassDefFoundError: java/sql/Date
at <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="3a5955575755544914585f5b544f4e5356497a0b1403140e" rel="noreferrer noopener nofollow">[email protected]</a>/org.apache.commons.beanutils.ConvertUtilsBean.registerOther(ConvertUtilsBean.java:730)
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at opencsvDemo/demo.CsvGetter.get(CsvGetter.java:23)
at opencsvDemo/demo.Main.main(Main.java:13)
错误是在我的 module-info.java 文件中吗，还是我应该看看其他地方？
最佳答案
您可以尝试使用
requires java.sql;
在模块描述符中确保正确解析具有预期类的模块。
如果代码在没有该描述符的情况下编译，则必须有另一个模块负责。你必须识别它并进一步决定要选择的道路。这可能是由于项目的依赖性引入了具有相同包的自动模块，这也可能进一步导致拆分包问题。在这种情况下，寻找有利于 Java 升级的库更新等可能会有所帮助。
关于java - 从 main 调用时 opencsv 抛出异常，并且存在 module-info.java，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/64293538/