服务器DNS地址改动导致无法启动解析域名

Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [spring/schedulingContext-timer.xml]; nested exception is java.net.UnknownHostException: www.springframework.org
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:409)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:335)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
        at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.importBeanDefinitionResource(DefaultBeanDefinitionDocumentReader.java:258)
        ... 32 more
Caused by: java.net.UnknownHostException: www.springframework.org

解决方法：

修改文件
vim /etc/resolv.conf
[root@markpain ~]# cat /etc/resolv.conf //查看该文件中的内容（依据运营商定义）

# Generated by NetworkManager
nameserver 8.8.8.8      //google服务器
nameserver 8.8.4.4      //google备用服务器