在Tomcat部署了一个Web应用，Web应用的后台程序运行正常，但是打开Web应用的JSP页面时就报错了：
HTTP Status 500 - -------------------------------------------- type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: java.lang.AbstractMethodError: javax.servlet.jsp.JspFactory.getJspApplicationContext(Ljavax/servlet/ServletContext;)Ljavax/servlet/jsp/JspApplicationContext; org.apache.jasper.servlet.JspServlet.service(JspServlet.java:268) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) root cause java.lang.AbstractMethodError: javax.servlet.jsp.JspFactory.getJspApplicationContext(Ljavax/servlet/ServletContext;)Ljavax/servlet/jsp/JspApplicationContext; org.apache.jsp.index_jsp._jspInit(index_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:313) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.29 logs.
后来求助于万能的谷哥，发现原来是不同的Web应用会相互影响，于是把我原来的一个Web应用删掉，打开页面，OK了。
至于造成这种情况的原因，正在探索。。。。。。
我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.myexception.cn/java-web/317.html