[Tomcat] 톰캣 The type java.util.Map$Entry cannot be resolved

http://1.2.3.4:7070/blazeds/jsp/api/AAAA.jsp

 

AAAA.jsp로 API 요청을 보낸 뒤 500에러 발생하는 현상이 있었다

 

HTTP Status 500 - Unable to compile class for JSP:
type Exception report

message Unable to compile class for JSP:

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: [1] in the generated java file: [D:\dev\aaaa\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\blazeds\org\apache\jsp\jsp\api\gAAA_jsp.java]
The type java.util.Map$Entry cannot be resolved. It is indirectly referenced from required .class files

An error occurred at line: [1] in the generated java file: [D:\dev\lab\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\blazeds\org\apache\jsp\jsp\api\AAAA_jsp.java]
The type java.io.ObjectInputStream cannot be resolved. It is indirectly referenced from required .class files

Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.47 logs.

Apache Tomcat/7.0.47

 

 

톰캣 7.0.47 버전이 자바 1.8 버전과 호환이 안되는 것이 문제였고

 

자바 1.8 버전과 호환되는 최신 톰캣 7.0.99 버전으로 변경하여 해결하였다.

 

프로젝트 클린도 하고 톰캣 클린도 했는데 계속 안돼서 애먹었다..