Почему выдает ошибку при запуске сервлета?

Question

pomaz_andrew @pomaz_andrew

Java

Почему выдает ошибку при запуске сервлета?

Всем доброго дня! Разрабатываю сервлет (Eclipse + Tomcat). После подключения сторонней jar-библиотеки стало выдавать такую ошибку.

06.04.2017 11:58:32 org.apache.tomcat.util.digester.Digester getParser
SEVERE: Digester.getParser: 
java.lang.SecurityException: Invalid signature file digest for Manifest main attributes
	at sun.security.util.SignatureFileVerifier.processImpl(Unknown Source)
	at sun.security.util.SignatureFileVerifier.process(Unknown Source)
	at java.util.jar.JarVerifier.processEntry(Unknown Source)
	at java.util.jar.JarVerifier.update(Unknown Source)
	at java.util.jar.JarFile.initializeVerifier(Unknown Source)
	at java.util.jar.JarFile.getInputStream(Unknown Source)
	at sun.net.www.protocol.jar.JarURLConnection.getInputStream(Unknown Source)
	at java.net.URL.openStream(Unknown Source)
	at java.lang.ClassLoader.getResourceAsStream(Unknown Source)
	at javax.xml.parsers.SecuritySupport$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.xml.parsers.SecuritySupport.getResourceAsStream(Unknown Source)
	at javax.xml.parsers.FactoryFinder.findJarServiceProvider(Unknown Source)
	at javax.xml.parsers.FactoryFinder.find(Unknown Source)
	at javax.xml.parsers.SAXParserFactory.newInstance(Unknown Source)
	at org.apache.tomcat.util.digester.Digester.getFactory(Digester.java:492)
	at org.apache.tomcat.util.digester.Digester.getParser(Digester.java:707)
	at org.apache.tomcat.util.digester.Digester.getXMLReader(Digester.java:917)
	at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1576)
	at org.apache.catalina.startup.Catalina.load(Catalina.java:616)
	at org.apache.catalina.startup.Catalina.load(Catalina.java:667)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:253)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:427)
06.04.2017 11:58:32 org.apache.catalina.startup.Catalina load
WARNING: Catalina.start using conf/server.xml:

Исходник такой:

package com.prepaywrapper;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


/**
 * Servlet implementation class PrepayServlet
 */
public class PrepayServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public PrepayServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
	
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}
	

}

То есть по сути ничего не делаем пока. В чем может быть причина такой ошибки ?