深入理解C语言指针的奥秘

HTTP Status 500 -

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type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: java.lang.NoSuchMethodError: javax.servlet.jsp.JspFactory.getJspApplicationContext(Ljavax/servlet/ServletContext;)Ljavax/servlet/jsp/JspApplicationContext; org.apache.jasper.servlet.JspServlet.service(JspServlet.java:275) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.NoSuchMethodError: javax.servlet.jsp.JspFactory.getJspApplicationContext(Ljavax/servlet/ServletContext;)Ljavax/servlet/jsp/JspApplicationContext; org.apache.jsp.Login_jsp._jspInit(Login_jsp.java:22) 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:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

今天启动tomcat5时报了这个错，找了很久始终没有找到原因，试过了各种方法：
1、删除tomcat的work目录、webapp的非tomcat项目
2、检查所有jar包，包括jsper.jar、servlet-spi.jar等等
3、删除项目重新导入
等等等等。。。。。。。。。。。。。

最后把项目的build pth里的jre从1.6换成了1.5了，重新编译，就好了