java.lang.NoSuchMethodError: javax.servlet.jsp.JspFactory.getJspApplicationContext错误解决
现象：
加载应用时tomcat控制台出现异常
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/JspApplicationCont
原因：
应用中添加的servlet-jsp.jar包(一般为myclipse添加）与tomcat的servlet-jsp.jar包冲突。这个包中主要为jsp引擎相关class。
解决：
将应用中servlet-jsp.jar删除
