我在 Eclipse 中创建了一个 JSP 项目（使用 Tomcat 7），但是当我运行该页面时，我得到一个 ClassnotFoundExcption。
在我的项目中，我使用控制器将数据绑定到 JSP，我有一个控制器、一个服务和一个数据对象 -> dbChanges
我已经“谷歌搜索”了我的问题，但没有找到任何东西。
PS：抱歉英语不好，我尽力了
HTTP Status 500 - java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
--------------------------------------------------------------------------------
type Exception report
message java.lang.ClassNotFoundException: org.apache.jsp.dbChanges.index_jsp
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.dbChanges.index_jsp
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:177)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
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:722)
root cause
java.lang.ClassNotFoundException: org.apache.jsp.dbChanges.index_jsp
java.net.URLClassLoader$1.run(URLClassLoader.java:366)
java.net.URLClassLoader$1.run(URLClassLoader.java:355)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:354)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:172)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
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:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.30 logs.
--------------------------------------------------------------------------------
Apache Tomcat/7.0.30
阿帕奇日志
Jan 14, 2014 11:33:07 AM org.apache.catalina.core.StandardWrapperValve invoke
Schwerwiegend: Servlet.service() for servlet [jsp] in context with path [/dbChanges] threw exception [java.lang.ClassNotFoundException: org.apache.jsp.index_jsp] with root cause
java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:132)
at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:63)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:139)
at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:172)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:jsp="http://java.sun.com/xml/ns/javaee/jsp"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>dbChanges</display-name>
<session-config>
<session-timeout>60</session-timeout>
</session-config>
<jsp-config>
<taglib>
<taglib-uri>http://www.springframework.org/tags/form</taglib-uri>
<taglib-location>/META-INF/spring-form.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://java.sun.com/jsp/jstl/core</taglib-uri>
<taglib-location>/META-INF/c.tld</taglib-location>
</taglib>
</jsp-config>
<context-param>
<param-name>enableSessionManager</param-name>
<param-value>false</param-value>
</context-param>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<error-page>
<error-code>403</error-code>
<location>/errors/403.html</location>
</error-page>
<error-page>
<error-code>404</error-code>
<location>/errors/404.html</location>
</error-page>
<!-- <error-page>
<error-code>500</error-code>
<location>/errors/500.html</location>
</error-page> -->
</web-app>
如果您需要更多信息（文件等），请直接说出来。
我希望你可以帮助我。
黑曜石农夫
1.使用“以管理员身份运行”或在 Linux 中使用 sudo 打开命令提示符
- 进入Tomcat文件夹的“bin”目录。
例如： cd C:\Program Files\Apache Software Foundation\Apache Tomcat 8.0.15\bin
请记下版本号和准确的位置。
运行“startup.bat”，服务器应该启动
打开浏览器输入http://localhost-8080.com/
如果服务器运行没有异常，这意味着您必须授予 eclipse 管理权限。
为此，您可以访问：Windows 7 - Eclipse 现在需要我以管理员身份运行
or https://askubuntu.com/questions/249098/how-do-i-run-eclipse-as-sudo
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