eclipse ide 报错的几个问题配置

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。

Eclipse中New Server没有tomcat选项

Help->InstallNew Software->add ->   http://download.eclipse.org/releases/kepler -> JST Server AdaptersExtensions(打勾选上该项)

 如果没有导出war选项。

这个web 要里面要全选，全部安装。

 tomcat 乱码

解决方案：打开Tomcat目录下——》conf目录——》logging.properties文件

• 打开找到下图此处，将UTF-8修改成“GBK“，再重新启动Tomcat即可。