java map 无法解析的编译问题_无法为JSP编译类：无法解析类型java.util.Map $ Entry。从所需的.class...JSP 2.0 Examples - Hello World SimpleTag Handler

我无法获取tomcat7来编译jsps。直到运行示例servlet一切正常，并且服务已启动并正在运行。我正在运行oracle java 8。

谁能指出我正确的方向？

这是堆栈跟踪：

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

The type java.util.Map$Entry cannot be resolved. It is indirectly referenced from required .class files

Stacktrace:

org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)

org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:331)

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)

note The full stack trace of the root cause is available in the Apache Tomcat/7.0.35 logs.

该代码看起来像这样，它是tomcat7的示例代码，所以我想这是正确的。

JSP 2.0 Examples - Hello World SimpleTag Handler

This tag handler simply echos "Hello, World!"  It's an example of

a very basic SimpleTag handler with no body.

Result: