applicationContext.xml 文件头报错Referenced file contains errors

转载：https://www.cnblogs.com/zjfjava/p/6950290.html 问题如下：原先运行正常的项目，突然在applicationContext.xml 文件头报错      内容：Referenced file contains errors (http://www.springframework.org/schema/tx/spring-tx.xsd). For m

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