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Home/ Questions/Q 1111165
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Editorial Team
  • 0
Editorial Team
Asked: May 17, 20262026-05-17T02:30:22+00:00 2026-05-17T02:30:22+00:00

I have servlet that does the following: public class LoginServlet extends HttpServlet { protected

  • 0

I have servlet that does the following:

public class LoginServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        request.getAttribute("username");
        request.getAttribute("password");
        String username = request.getParameter("username");
        String password = request.getParameter("password");
        LoginManager lm = new LoginManager(username.trim(), password.trim());

Whenever I reach the last tomcat apache “crashes” with the following error message:

exception

javax.servlet.ServletException: Servlet execution threw an exception

root cause

java.lang.NoClassDefFoundError: javax/xml/rpc/ServiceException
    servlets.LoginServlet.doPost(LoginServlet.java:20)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

java.lang.ClassNotFoundException: javax.xml.rpc.ServiceException
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1666)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
    servlets.LoginServlet.doPost(LoginServlet.java:20)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

Please Help
Thanks!

When including jaxrpc.jar in the WEB-INF/lib folder I get following error:

root cause

java.lang.NoClassDefFoundError:
org/apache/axis/AxisFault
java.lang.ClassLoader.defineClass1(Native
Method)
java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
java.lang.ClassLoader.defineClass(ClassLoader.java:616)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2778)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1139)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1633)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
java.lang.ClassLoader.defineClass1(Native
Method)
java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
java.lang.ClassLoader.defineClass(ClassLoader.java:616)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2778)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1139)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1633)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
servlets.LoginServlet.doPost(LoginServlet.java:20)
javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

java.lang.ClassNotFoundException:
org.apache.axis.AxisFault
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1666)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
java.lang.ClassLoader.defineClass1(Native
Method)
java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
java.lang.ClassLoader.defineClass(ClassLoader.java:616)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2778)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1139)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1633)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
java.lang.ClassLoader.defineClass1(Native
Method)
java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
java.lang.ClassLoader.defineClass(ClassLoader.java:616)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2778)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1139)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1633)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1511)
servlets.LoginServlet.doPost(LoginServlet.java:20)
javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

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1 Answer

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  1. Editorial Team
    Editorial Team
    2026-05-17T02:30:22+00:00Added an answer on May 17, 2026 at 2:30 am

    Tomcat version and JDK / JRE version would be helpful.

    It looks like your webapp is missing some required jars from WEB-INF/lib; in particular the jaxrpc jar.

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