异常如下：
2018-08-07 14:10:51,645 ERROR [500.jsp] - Handler processing failed; nested exception is java.lang.NoSuchMethodError: com.am.common.utils.JedisUtils.closeResource(Lredis/clients/jedis/Jedis;Z)V
org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoSuchMethodError: com.am.common.utils.JedisUtils.closeResource(Lredis/clients/jedis/Jedis;Z)V
at org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1280)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:958)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)
at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
看到上面代码是否已经没有耐心读下去了，那你就失败了！
java.lang.NoSuchMethodError ：把这个翻译之后 的意思 没有这样的方法。错误代码连起来读就是
没有该方法com.am.common.utils.JedisUtils.closeResource。
尽然异常说的没有那就真的没有该方法，反思开始了 。 JedisUtils本来就是jar包引入的怎么会没有呢？
大胆去怀疑，它在什么情况下会没有该方法呢？难道版本升级之后才有该方法的。
事实的确如此。就就是升级后才有的，所以说编译的时候版本是否一致呢？