Maven下WEB项目访问index。jsp报500适合myeclipse14

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

exception

javax.servlet.ServletException: java.lang.LinkageError: loader constraint violation: loader (instance of org/apache/jasper/servlet/JasperLoader) previously initiated loading for a different type with name “javax/servlet/http/HttpServletRequest”

org.apache.jasper.servlet.JspServlet.service(JspServlet.java:268)

javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.LinkageError: loader constraint violation: loader (instance of org/apache/jasper/servlet/JasperLoader) previously initiated loading for a different type with name “javax/servlet/http/HttpServletRequest”

java.lang.Class.getDeclaredMethods0(Native Method)

java.lang.Class.privateGetDeclaredMethods(Class.java:2531)

java.lang.Class.getDeclaredMethods(Class.java:1855)

org.apache.catalina.util.DefaultAnnotationProcessor.processAnnotations(DefaultAnnotationProcessor.java:226)

org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:148)

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)

解决方案：

1:



2：选择myeclipse server Library 然后添加一个tomcat