title: java.lang.ClassNotFoundException: org.springframework.core.NestedRuntimeException
body: <p>i am trying to run tomcat on my web application but i cannot, can someone help me to find the problem.</p>
  
  <pre><code>Caused by: java.lang.NoClassDefFoundError: org/springframework/core/NestedRuntimeException
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClass(Unknown Source)
      at java.security.SecureClassLoader.defineClass(Unknown Source)
      at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2957)
      at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210)
      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690)
      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
      at java.lang.Class.getDeclaredFields0(Native Method)
      at java.lang.Class.privateGetDeclaredFields(Unknown Source)
      at java.lang.Class.getDeclaredFields(Unknown Source)
      at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)
      at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:261)
      at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:140)
      at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:65)
      at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:403)
      at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:879)
      at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:374)
      at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
      at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
      at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5355)
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
      ... 6 more
  Caused by: java.lang.ClassNotFoundException: org.springframework.core.NestedRuntimeException
      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
      at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
      ... 27 more
  </code></pre>
  
  <p>the web.xml file </p>
  
  <pre><code> &lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
  xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  id="WebApp_ID" version="3.0"&gt;
  
    &lt;display-name&gt;TargetDestroy_Hospi&lt;/display-name&gt;
  
      &lt;servlet&gt;
          &lt;servlet-name&gt;dispatcher&lt;/servlet-name&gt;
          &lt;servlet-class&gt;org.springframework.web.servlet.DispatcherServlet&lt;/servlet-class&gt;
          &lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
      &lt;/servlet&gt;
  
      &lt;servlet-mapping&gt;
          &lt;servlet-name&gt;dispatcher&lt;/servlet-name&gt;
          &lt;url-pattern&gt;*.html&lt;/url-pattern&gt;
      &lt;/servlet-mapping&gt;
  
      &lt;context-param&gt;
         &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt;
         &lt;param-value&gt;/WEB-INF/servlet-context.xml&lt;/param-value&gt;
     &lt;/context-param&gt;
  
      &lt;session-config&gt;
          &lt;session-timeout&gt;
            30
          &lt;/session-timeout&gt;
      &lt;/session-config&gt;
      &lt;welcome-file-list&gt;
          &lt;welcome-file&gt;index.jsp&lt;/welcome-file&gt;
      &lt;/welcome-file-list&gt;
  &lt;/web-app&gt;
  </code></pre>
  
  <p>Server Tomcat v7.0 Server at localhost failed to start. 
  the last week everything was ok but since yesterday tomcat cannot start </p>