情况一
代码之前一直运行正常，写了一个定时器后报错，本地测试为了立马能执行就用cron表达式* * * * * ?，为了只执行一次在最后面加上Thread.sleep(1000*3600*24)睡眠二十四小时从而达到每次测试只执行一次定时任务。
@Scheduled(cron="* * * * * ?") public void execute() throws InterruptedException { System.out.println("调用时间"+CommonTool.getNowDateStr()); insert(); Thread.sleep(1000*3600*24); }
启动报错org.logicalcobwebs.proxool.ProxoolException: Attempt to refer to a unregistered pool by its alias ‘XXX’
原因在于连接池没注册完成就调用了dao获取连接导致报错，但是只会在刚启动时报一次。只需要在调用dao前Thread.sleep(10000)睡眠十秒，等到线程池注册成功在进行dao操作。
情况二
在使用多数据源时，spring jdbctemplate + spring data jpa的情况下。为了防止事务有问题，proxool.xml下写了两个配置，一个给jdbc一个给jpa。当springdatajpa使用数据源时，总是会立马获取连接，原因不知道为什么。于是只能强制在加载org.springframework.web.context.ContextLoaderListener之前加载proxool。
原代码
<servlet> <servlet-name>proxoolServletConfigurator</servlet-name> <servlet-class> org.logicalcobwebs.proxool.configuration.ServletConfigurator </servlet-class> <init-param> <param-name>xmlFile</param-name> <param-value>WEB-INF/classes/jdbcproxool.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!--spring的监听器--> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener>
改为
<!--proxool的ListenerConfigurator监听器用的参数--> <context-param> <param-name>proxoolConfigLocation</param-name> <param-value>WEB-INF/classes/jdbcproxool.xml</param-value> </context-param> <!--proxool的监听器--> <listener> <listener-class>org.logicalcobwebs.proxool.configuration.ListenerConfigurator</listener-class> </listener> <!--spring的监听器--> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener>
ListenerConfigurator类需要自己新建
package org.logicalcobwebs.proxool.configuration; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.logicalcobwebs.proxool.ProxoolException; import org.logicalcobwebs.proxool.ProxoolFacade; import javax.servlet.ServletContextEvent; import java.io.File; import java.util.Properties; /** * proxool初始化*/ public class ListenerConfigurator implements javax.servlet.ServletContextListener { private static final Log LOG = LogFactory .getLog(ListenerConfigurator.class); private static final String XML_FILE_PROPERTY = "proxoolConfigLocation"; private boolean autoShutdown = true; public void contextInitialized(ServletContextEvent servletConfig) { String appDir = servletConfig.getServletContext().getRealPath("/"); Properties properties = new Properties(); String value = servletConfig.getServletContext().getInitParameter( XML_FILE_PROPERTY); LOG.debug("proxoolConfigLocation:"+value); try { File file = new File(value); if (file.isAbsolute()) { JAXPConfigurator.configure(value, false); } else { LOG.debug(appDir + File.separator + value); JAXPConfigurator.configure(appDir + File.separator + value, false); } } catch (ProxoolException e) { LOG.error("Problem configuring " + value, e); } if (properties.size() > 0) { try { PropertyConfigurator.configure(properties); } catch (ProxoolException e) { LOG.error("Problem configuring using init properties", e); } } } public void contextDestroyed(ServletContextEvent s) { if (autoShutdown) { ProxoolFacade.shutdown(0); } } }
原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/17777.html