Eclipse 和 Tomcat 的突然错误

【问题标题】：Sudden error with Eclipse and TomcatEclipse 和 Tomcat 的突然错误
【发布时间】：2018-12-20 12:05:20
【问题描述】：

我正在做我的网络应用程序，它一直工作到今天。我打开，我启动了服务器，现在我收到了这个错误，除了 java 中的页面不再工作的事实。 我没有修改任何java页面。只有一些jsp o html。 我也试过重启Mysql，但没有改变：

lug 12, 2018 11:50:47 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
AVVERTENZA: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:WebApplication1' did not find a matching property.
lug 12, 2018 11:50:47 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
AVVERTENZA: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:HotelReservation' did not find a matching property.
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Server version:        Apache Tomcat/9.0.8
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Server built:          Apr 27 2018 19:32:00 UTC
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Server number:         9.0.8.0
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: OS Name:               Mac OS X
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: OS Version:            10.13.5
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Architecture:          x86_64
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Java Home:             /Library/Java/JavaVirtualMachines/jdk1.8.0_161.jdk/Contents/Home/jre
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: JVM Version:           1.8.0_161-b12
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: JVM Vendor:            Oracle Corporation
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: CATALINA_BASE:         /Users/albertomiceli/eclipse/.metadata/.plugins/org.eclipse.wst.server.core/tmp0
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: CATALINA_HOME:         /Library/Tomcat
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Command line argument: -Dcatalina.base=/Users/albertomiceli/eclipse/.metadata/.plugins/org.eclipse.wst.server.core/tmp0
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Command line argument: -Dcatalina.home=/Library/Tomcat
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Command line argument: -Dwtp.deploy=/Users/albertomiceli/eclipse/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Command line argument: -Djava.endorsed.dirs=/Library/Tomcat/endorsed
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.VersionLoggerListener log
INFORMAZIONI: Command line argument: -Dfile.encoding=UTF-8
lug 12, 2018 11:50:47 AM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFORMAZIONI: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/Users/albertomiceli/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.]
lug 12, 2018 11:50:47 AM org.apache.coyote.AbstractProtocol init
INFORMAZIONI: Initializing ProtocolHandler ["http-nio-8080"]
lug 12, 2018 11:50:47 AM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFORMAZIONI: Using a shared selector for servlet write/read
lug 12, 2018 11:50:47 AM org.apache.coyote.AbstractProtocol init
INFORMAZIONI: Initializing ProtocolHandler ["ajp-nio-8009"]
lug 12, 2018 11:50:47 AM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFORMAZIONI: Using a shared selector for servlet write/read
lug 12, 2018 11:50:47 AM org.apache.catalina.startup.Catalina load
INFORMAZIONI: Initialization processed in 914 ms
lug 12, 2018 11:50:47 AM org.apache.catalina.core.StandardService startInternal
INFORMAZIONI: Starting service [Catalina]
lug 12, 2018 11:50:47 AM org.apache.catalina.core.StandardEngine startInternal
INFORMAZIONI: Starting Servlet Engine: Apache Tomcat/9.0.8
lug 12, 2018 11:50:51 AM org.apache.jasper.servlet.TldScanner scanJars
INFORMAZIONI: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
lug 12, 2018 11:50:54 AM org.apache.jasper.servlet.TldScanner scanJars
INFORMAZIONI: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
lug 12, 2018 11:50:56 AM org.apache.jasper.servlet.TldScanner scanJars
INFORMAZIONI: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
lug 12, 2018 11:50:56 AM org.apache.coyote.AbstractProtocol start
INFORMAZIONI: Starting ProtocolHandler ["http-nio-8080"]
lug 12, 2018 11:50:56 AM org.apache.coyote.AbstractProtocol start
INFORMAZIONI: Starting ProtocolHandler ["ajp-nio-8009"]
lug 12, 2018 11:50:56 AM org.apache.catalina.startup.Catalina start
INFORMAZIONI: Server startup in 8960 ms
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
Thu Jul 12 11:51:00 CEST 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
lug 12, 2018 11:51:00 AM org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: Servlet.service() for servlet [jsp] in context with path [/HotelReservation] threw exception [java.lang.IllegalStateException: Exception occurred when flushing data] with root cause
java.io.IOException: Stream closed
    at org.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:187)
    at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:105)
    at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:180)
    at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:120)
    at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
    at org.apache.jsp.prenotazione_jsp._jspService(prenotazione_jsp.java:222)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:444)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:412)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1385)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

lug 12, 2018 11:52:19 AM org.apache.catalina.core.ApplicationContext log
INFORMAZIONI: Marking servlet [Login] as unavailable
lug 12, 2018 11:52:19 AM org.apache.catalina.core.StandardWrapperValve invoke
GRAVE: Allocate exception for servlet [Login]
java.lang.ClassNotFoundException: hotel.Login
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1292)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1121)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:540)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:521)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1032)
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:761)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:133)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:412)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1385)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

为什么我会收到此错误？为什么我不明白。

【问题讨论】：

  • 检查部署程序集并检查那里的java类文件夹。并在eclipse中检查项目属性中的jdk路径。同时检查jsp文件是否正确定义包

标签： java mysql eclipse tomcat


【解决方案1】：

尝试清理正在进行的项目 -> 清理... 你也可以重启有时会发疯的eclipse

【讨论】：

  • 我试过了，但什么都没有。我不明白为什么它不再连接到数据库了。
  • 您在 Hotel.login 上得到一个 classNotFoundException，这意味着在运行时 JVM 无法找到该类所在的路径。
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