title: Spring Data Gemfire configuration issues
body: <p>I am following the Spring Data Gemfire sample configuration on my application as below:</p>
  
  <p>
      </p>
  
  <pre><code>&lt;gfe:cache/&gt;   
  &lt;gfe:local-region id="Customer"&gt;
      &lt;gfe:cache-listener&gt;
          &lt;bean class="com.my.app.util.LoggingCacheListener"/&gt;
      &lt;/gfe:cache-listener&gt;
  &lt;/gfe:local-region&gt;
  
  &lt;bean id="cacheManager" class="org.springframework.data.gemfire.support.GemfireCacheManager"&gt;
      &lt;property name="regions"&gt;
          &lt;set&gt;
              &lt;ref bean="Customer"/&gt;
          &lt;/set&gt;
      &lt;/property&gt;
  &lt;/bean&gt;
  </code></pre>
  
  <p>And got the issue as :
  aused by: java.lang.NoSuchMethodError: org.springframework.util.StringUtils.isEmpty(Ljava/lang/Object;)Z
      at org.springframework.data.gemfire.config.CacheParser.parsePdxDiskStore(CacheParser.java:113)
      at org.springframework.data.gemfire.config.CacheParser.doParse(CacheParser.java:60)
      at org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser.parseInternal(AbstractSingleBeanDefinitionParser.java:85)
      at org.springframework.beans.factory.xml.AbstractBeanDefinitionParser.parse(AbstractBeanDefinitionParser.java:59)
      at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:73)
      at org.springframework.data.gemfire.config.GemfireNamespaceHandler.parse(GemfireNamespaceHandler.java:46)
      at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1423)
      at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1413)
      at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:184)
      at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:140)
      at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:111)
      at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
      at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)</p>