tomcat 的503错误

Posted 2023-04-25

在apache +tomcat +mysql系统下,采用了数据库连接池技术:

第一次使用正常,当重启tomcat后,会出现503错误,
然而,重启mysql服务之后,再重启tomcat,和apache,又正常了.这难道是因为连接池满了的原因吗?,当再次重启tomcat时,又出现503错误,这是为什么了?
请教高手,谢了.
当出现503错误时,到服务里去看,mysql tomcat apache ,它们的服务都在照常的启动着.

像上面的办法,让它访问正常后,在tomcat的日志下看到了这个信息:

The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path:
D:\Program Files\Apache Software Foundation\Tomcat 6.0\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;D:\Program Files\Java\jdk1.6.0\bin;C:\Program Files\Common Files\Adobe\AGL;D:\Program Files\Apache Software Foundation\Tomcat 6.0\bin

1、这是哪个环量变量没配置好吗?

参考技术A 无大碍.如果需要解决的话可以参看:
http://blog.donews.com/lizongbo/archive/2006/01/26/709282.aspx

tomcat 启动正常，网站确HTTP Status 500 错误

HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:527)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:359)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:102)
com.huafeng.web.listens.TransmitFilter.doFilter(TransmitFilter.java:51)

root cause
java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor
org.apache.jsp.login_jsp._jspInit(login_jsp.java:24)
org.apache.jasper.runtime.HttpJspBase.init(HttpJspBase.java:52)
org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:159)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:329)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:102)
com.huafeng.web.listens.TransmitFilter.doFilter(TransmitFilter.java:51)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.26 logs.

--------------------------------------------------------------------------------
Apache Tomcat/6.0.26

解决方法：项目目录下的WEB-INF/lib里面的jar包有冲突，把他们删除就行了。
如果是别的地方移过来的程序 删除里面的 catalina.jar 重新启动 tomcat 参考技术A 端口被占用了，你到tomcat的目录下，有一个server.xml文件，把里面的商品修改下，然后重启下试试追问

可以肯定 不是端口被占用，我tomcat启动 没有报错 亲。只是访问程序出现那个。

参考技术B 看错误提示:org.apache.jasper.JasperException: java.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor

这问题网上有好多成功解决的例子
ava.lang.ClassCastException: org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor 参考技术C com.huafeng.web.listens.TransmitFilter.doFilter(TransmitFilter.java:51)
，这个应该是你自己的代码，看看这里有什么问题。追问

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