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1. The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path
解决方法:
1)、首先右键出现错误的文件夹,然后Build Path->Configure Build Path->Add Library->Server Runtime->Apache Tomcat v8.0,然后点击finish
2. java compiler level does not match the version of the installed java project facet
解决方法:
1)、进入项目文件中,找到.setting文件,进入文件中,找到org.eclipse.wst.common.project.facet.core.xml,然后打开进入文本编辑模式;
2)、修改installed facet=”java” version=”1.7”,将version版本信息修改和编译器版本一致,然后刷新项目,错误消失。
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