Difficullty调试Grails＆amp; Tomcat8错误

Question

尝试部署我的Grails应用程序（版本1.3.9），我发现已记录问题的唯一位置是位于localhost.log文件夹中的/var/log/tomcat8。

堆栈跟踪只有几行，让我想知道如何修复错误。有什么想法吗？

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pluginManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NullPointerException: Cannot invoke method getAt() on null object
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: Cannot invoke method getAt() on null object
        ... 3 more

奇怪的是，这个应用程序在localhost上工作正常，只在服务器上部署了问题

修改

VAR / LIB / tomcat8 / web应用/应用/ WEB_INF / applicationContext.xml的

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

        <bean id="grailsApplication" class="org.codehaus.groovy.grails.commons.GrailsApplicationFactoryBean">
                <description>Grails application factory bean</description>
        <property name="grailsDescriptor" value="/WEB-INF/grails.xml" />
        <property name="grailsResourceLoader" ref="grailsResourceLoader" />
        </bean>

        <bean id="pluginManager" class="org.codehaus.groovy.grails.plugins.GrailsPluginManagerFactoryBean">
                <description>A bean that manages Grails plugins</description>
        <property name="grailsDescriptor" value="/WEB-INF/grails.xml" />
        <property name="application" ref="grailsApplication" />
        </bean>

    <bean id="grailsConfigurator" class="org.codehaus.groovy.grails.commons.spring.GrailsRuntimeConfigurator">
        <constructor-arg>
            <ref bean="grailsApplication" />
        </constructor-arg>
        <property name="pluginManager" ref="pluginManager" />
    </bean>

    <bean id="grailsResourceLoader" class="org.codehaus.groovy.grails.commons.GrailsResourceLoaderFactoryBean">
        <property name="grailsResourceHolder" ref="grailsResourceHolder" />
    </bean>

    <bean id="grailsResourceHolder" scope="prototype" class="org.codehaus.groovy.grails.commons.spring.GrailsResourceHolder">
        <property name="resources">
              <value>**/grails-app/**/*.groovy</value>
        </property>
    </bean>    

   <bean id="characterEncodingFilter"
      class="org.springframework.web.filter.CharacterEncodingFilter">
        <property name="encoding">
          <value>utf-8</value>
        </property>
   </bean>      
</beans>
(END)