和web.xml继续奋斗HTTP Status 500 – Internal Server Error

和web.xml继续奋斗
上次报了Proxool池连接错误，就在web.xml里加入了

	<!-- start proxool连接池 -->
	
	<servlet>
		<display-name>proxool</display-name>
		<servlet-name>ServletConfigurator</servlet-name>
		<servlet-class>
			org.logicalcobwebs.proxool.configuration.ServletConfigurator</servlet-class>
		<init-param>
			<param-name>xmlFile</param-name>
			<param-value>WEB-INF/proxool.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet>
		<servlet-name>wkxtAdmin</servlet-name>
		<servlet-class>org.logicalcobwebs.proxool.admin.servlet.AdminServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>wkxtAdmin</servlet-name>
		<url-pattern>/wkxtAdmin</url-pattern>
	</servlet-mapping>

	<!-- end proxool连接池 -->

然后又报了另一个错误。

HTTP Status 500 – Internal Server Error
Type Exception Report

Message java.lang.NullPointerException

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

javax.servlet.ServletException: java.lang.NullPointerException
	org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Root Cause

java.lang.NullPointerException
	com.lyt.cache.CacheUtil.setCacheJournal(CacheUtil.java:32)
	com.wkxt.journal.JournalServiceImpl.loadJournal(JournalServiceImpl.java:118)
	com.wkxt.article.web.action.ShowOldVolumnENAction.execute(ShowOldVolumnENAction.java:33)
	org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Note The full stack trace of the root cause is available in the server logs.

Apache Tomcat/9.0.10