无法为JSP编译类：无法解析类型java.util.Map $ Entry。从所需的.class文件间接引用它

小编典典

无法为JSP编译类：无法解析类型java.util.Map $ Entry。从所需的.class文件间接引用它

java

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，这是来自tomcat7的示例代码，所以我想这是正确的。

<%@ taglib prefix="mytag" uri="/WEB-INF/jsp2/jsp2-example-taglib.tld" %>
<html>
<head>
  <title>JSP 2.0 Examples - Hello World SimpleTag Handler</title>
</head>
<body>
<h1>JSP 2.0 Examples - Hello World SimpleTag Handler</h1>
<hr>
<p>This tag handler simply echos "Hello, World!"  It's an example of
a very basic SimpleTag handler with no body.</p>
<br>
<b><u>Result:</u></b>
<mytag:helloWorld/>
</body>
</html>

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2020-03-24

共1个答案

小编典典

你必须使用支持JDK 8的最新版本的tomcat。

我可以确认apache-tomcat-7.0.35不支持JDK8，也可以确认apache-tomcat-7.0.50不支持JDK8。

2020-03-24