Eclipse IDE for Java Developers
Version: 2019-12 (4.14.0)
一 Java compiler level does not match the version of the installed Java project facet.
解决方法
\
和 这个 1.8 版本要统一
下面的
二 Referenced file contains errors (http://www.springframework.org/schema/mvc/s
Multiple annotations found at this line: - Referenced file contains errors (http://www.springframework.org/schema/context/spring-context.xsd). For more information, right click on the message in the Problems View and select "Show Details..." - Referenced file contains errors (http://www.springframework.org/schema/mvc/spring-mvc.xsd). For more information, right click on the message in the Problems View and select "Show Details..."
解决
三 Access restriction: The type FileURLConnection is not accessible due to restriction on required library
eclipse设置问题，它默认把这些受访问限制的API设成了ERROR
修改
的Deprecated and restricted API中的Forbidden references(access rules)选为Warning就可以了。