myeclipse 各种错误

部署失败

1、问题描述

maven deployment failure on myeclipse tomcat………………

2、原因分析

构建路径里的jar包引用错误。

3、解决方法

改为正确的jar包引用即可。

4、参考

http://blog.sina.com.cn/s/blog_646cd165010196q7.html

访问项目首页时报错，找不到servlet/jsp类

1、问题描述

找不到jsp.jar包的类和方法。

信息: Server startup in 2414 ms
Error in Processing /
org.apache.jasper.JasperException: Unable to compile class for JSP: 
 
An error occurred at line: 22 in the generated java file
The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory
 
Stacktrace:
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:308)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:273)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.bigning.fantastic.filter.FantasticFilter$1.forward(FantasticFilter.java:79)
at com.bigning.fantastic.action.FantasticActionInvoker.invoke(FantasticActionInvoker.java:310)
at com.bigning.fantastic.filter.FantasticFilter.doFilter(FantasticFilter.java:70)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
 
2016-1-3 19:46:34 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: Unable to compile class for JSP: 
 
An error occurred at line: 22 in the generated java file
The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory
 
Stacktrace:
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:308)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:273)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.bigning.fantastic.filter.FantasticFilter$1.forward(FantasticFilter.java:79)
at com.bigning.fantastic.action.FantasticActionInvoker.invoke(FantasticActionInvoker.java:310)
at com.bigning.fantastic.filter.FantasticFilter.doFilter(FantasticFilter.java:70)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)
2016-1-3 19:46:34 org.apache.catalina.core.StandardHostValve custom
严重: Exception Processing ErrorPage[exceptionType=java.lang.Exception, location=/error.jsp]
java.lang.IllegalStateException
at org.apache.coyote.Response.reset(Response.java:297)
at org.apache.catalina.connector.Response.reset(Response.java:652)
at org.apache.catalina.connector.Response.reset(Response.java:916)
at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:417)
at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:271)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:595)

2、原因分析

项目构建路径的jsp.jar包与myeclipse内置tomcat里的jsp.jar包冲突。

冲突的意思是说，IDE内嵌的服务器（比如tomcat），本身已经包含了这2个jar包。部署项目的时候就不需要这2个包了（即在项目根路径下的WEB-INF/lib路径下不需要这2个jar包），否则会出现报错信息。

但是呢，在IDE里面如果去掉了这2个jar包，IDE编译时又会报找不到对应的类；myeclipse内置tomcat里的servlet包和jsp包也不能删除，否则一启动tomcat，就会报找不到servlet类的错误。

3、解决方法

在部署项目之后手动删除项目部署路径下的WEB-INF/lib里面的servlet包和jsp包。

4、附

如何查看IDE内嵌服务器所在路径呢？

答：启动tomcat之后，控制台输出信息里可以看到所在路径。

2015-9-5 13:22:03 org.apache.catalina.core.AprLifecycleListener init
信息: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\java\Myeclipse10\Common\binary\com.sun.java.jdk.win32.x86_1.6.0.013\bin;D:\java\Myeclipse10\Common\plugins\com.genuitec.eclipse.easie.tomcat.myeclipse_9.0.0.me201211011550\tomcat\bin
2015-9-5 13:22:04 org.apache.coyote.http11.Http11Protocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
2015-9-5 13:22:04 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 1564 ms
2015-9-5 13:22:04 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2015-9-5 13:22:04 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.13
2015-9-5 13:22:06 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
2015-9-5 13:22:09 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring FrameworkServlet 'mvc-dispatcher'
2015-9-5 13:22:12 org.apache.coyote.http11.Http11Protocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2015-9-5 13:22:12 org.apache.jk.common.ChannelSocket init
信息: JK: ajp13 listening on /0.0.0.0:8009

MyEclipse Servers视窗出现“Could not create the view: An unexpected exception was thrown”错误解决办法

1、

2、

3、解决方法

打开所在的wordspace文件夹，在下面子文件夹

.metadata\.plugins\org.eclipse.core.runtime\.settings

删除

com.genuitec.eclipse.ast.deploy.core.prefs

即可