跪求tomcat关闭时出下如下错误??
tomcat应用的时候都没有事,,人一多就会挂了啊.关闭tomcat重启又可以了啊.
看日志会报出如下错误:
请各位大侠帮忙小弟一下啊,这个问题困绕了我好久了啊.
信息:   Illegal   access:   this   web   application   instance   has   been   stopped   already.     Could   not   load   java.lang.System.     The   eventual   following   stack   trace   is   caused   by   an   error   thrown   for   debugging   purposes   as   well   as   to   attempt   to   terminate   the   thread   which   caused   the   illegal   access,   and   has   no   functional   impact.
java.lang.IllegalStateException
at   org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1241)
at   org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1201)
at   java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at   share.MD5.getMD5ofStr(MD5.java:58)
at   org.apache.jsp.viewthread_jsp._jspService(viewthread_jsp.java:439)
at   org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
at   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at   org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at   org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at   org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at   org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at   org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at   org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at   org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at   org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:833)
at   org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639)
at   org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285)
at   java.lang.Thread.run(Thread.java:595)
2007-5-8   7:56:44   org.apache.catalina.loader.WebappClassLoader   loadClass
信息:   Illegal   access:   this   web   application   instance   has   been   stopped   already.     Could   not   load   java.io.PrintStream.     The   eventual   following   stack   trace   is   caused   by   an   error   thrown   for   debugging   purposes   as   well   as   to   attempt   to   terminate   the   thread   which   caused   the   illegal   access,   and   has   no   functional   impact.
java.lang. java中定义的成员变量可以没有set*方法么?如果没有set*方法的话,会如何样