centOS tomcat8 数据库连接出问题

南山老妖 · 发表于 2019-8-2 00:02:21

不好意思又要来麻烦各位大神了！

我把用WeX5开发的应用装在centOS上的tomcat8.运行时出了ServletInit出了问题。Logs如下：

01-Aug-2019 15:49:02.275 SEVERE [http-nio-8080-exec-8] org.apache.catalina.core.StandardWrapperValve.invoke Allocate exception for servlet WeX5_Baas_Servlet
java.lang.NullPointerException
at java.io.File.<init>(File.java:277)
at com.justep.baas.servlet.BaasServlet.initLog4j(Unknown Source)
at com.justep.baas.servlet.BaasServlet.init(Unknown Source)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:827)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

我在其他网站得知tomcat8中dbcp有些改变。不知道应该怎么做。有劳大神指点。谢谢！

doudou459 · 发表于 2019-8-2 08:41:11

你这个看不出来问题出在哪里啊应该还有一段错误报告

南山老妖 · 发表于 2019-8-2 10:34:00

doudou459 发表于 2019-8-2 08:41
你这个看不出来问题出在哪里啊应该还有一段错误报告

Catalina.log

02-Aug-2019 02:31:09.190 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.0.14
02-Aug-2019 02:31:09.197 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Sep 24 2014 09:01:51
02-Aug-2019 02:31:09.197 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number:  8.0.14.0
02-Aug-2019 02:31:09.198 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:       Linux
02-Aug-2019 02:31:09.198 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:    3.10.0
02-Aug-2019 02:31:09.198 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64
02-Aug-2019 02:31:09.199 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.7.0_221-mockbuild_2019_04_22_15_03-b00
02-Aug-2019 02:31:09.199 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:    Oracle Corporation
02-Aug-2019 02:31:09.929 INFO [main] org.apache.catalina.core.AprLifecycleListener.init The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
02-Aug-2019 02:31:10.395 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
02-Aug-2019 02:31:10.492 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
02-Aug-2019 02:31:10.506 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
02-Aug-2019 02:31:10.510 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
02-Aug-2019 02:31:10.511 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 1481 ms
02-Aug-2019 02:31:10.616 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
02-Aug-2019 02:31:10.635 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.14
02-Aug-2019 02:31:10.667 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat8/webapps/examples
02-Aug-2019 02:31:12.088 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.089 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.090 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.091 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.498 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat8/webapps/examples has finished in 1,831 ms
02-Aug-2019 02:31:12.498 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat8/webapps/host-manager
02-Aug-2019 02:31:12.753 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.754 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.754 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.755 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:12.767 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
02-Aug-2019 02:31:12.784 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat8/webapps/host-manager has finished in 286 ms
02-Aug-2019 02:31:12.784 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat8/webapps/ROOT
02-Aug-2019 02:31:13.002 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:13.002 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:13.003 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:13.003 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:13.008 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
02-Aug-2019 02:31:13.010 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat8/webapps/ROOT has finished in 226 ms
02-Aug-2019 02:31:13.010 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat8/webapps/cms
02-Aug-2019 02:31:13.333 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]

南山老妖 · 发表于 2019-8-2 10:34:38

doudou459 发表于 2019-8-2 08:41
你这个看不出来问题出在哪里啊应该还有一段错误报告

Catalina.log - continue

02-Aug-2019 02:31:13.333 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:13.334 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:13.334 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:13.339 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
02-Aug-2019 02:31:13.344 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat8/webapps/cms has finished in 334 ms
02-Aug-2019 02:31:13.344 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat8/webapps/baas
02-Aug-2019 02:31:20.973 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:20.973 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:20.974 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:20.974 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:20.993 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
02-Aug-2019 02:31:21.000 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat8/webapps/baas has finished in 7,656 ms
02-Aug-2019 02:31:21.000 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat8/webapps/manager
02-Aug-2019 02:31:21.212 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.213 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.213 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.214 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.217 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
02-Aug-2019 02:31:21.231 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat8/webapps/manager has finished in 231 ms
02-Aug-2019 02:31:21.232 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat8/webapps/docs
02-Aug-2019 02:31:21.372 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.373 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.374 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.374 WARNING [localhost-startStop-1] org.apache.catalina.core.NamingContextListener.addResource Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSourceFactory]
02-Aug-2019 02:31:21.377 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
02-Aug-2019 02:31:21.379 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat8/webapps/docs has finished in 147 ms
02-Aug-2019 02:31:21.385 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
02-Aug-2019 02:31:21.391 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
02-Aug-2019 02:31:21.391 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 10879 ms

南山老妖 · 发表于 2019-8-2 10:36:39

doudou459 发表于 2019-8-2 08:41
你这个看不出来问题出在哪里啊应该还有一段错误报告

localhost.log

02-Aug-2019 02:31:12.463 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
02-Aug-2019 02:31:12.463 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()
02-Aug-2019 02:31:20.998 SEVERE [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log StandardWrapper.Throwable
java.lang.NullPointerException
at java.io.File.<init>(File.java:277)
at com.justep.baas.servlet.BaasServlet.initLog4j(Unknown Source)
at com.justep.baas.servlet.BaasServlet.init(Unknown Source)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1041)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4969)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:724)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:700)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1071)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1721)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:473)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
at java.lang.Thread.run(Thread.java:748)

02-Aug-2019 02:31:20.999 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.loadOnStartup Servlet /baas threw load() exception
java.lang.NullPointerException
at java.io.File.<init>(File.java:277)
at com.justep.baas.servlet.BaasServlet.initLog4j(Unknown Source)
at com.justep.baas.servlet.BaasServlet.init(Unknown Source)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1041)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4969)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:724)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:700)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1071)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1721)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:473)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:622)
at java.lang.Thread.run(Thread.java:748)

doudou459 · 发表于 2019-8-2 15:20:50

南山老妖发表于 2019-8-2 10:36
localhost.log

02-Aug-2019 02:31:12.463 INFO [localhost-startStop-1] org.apache.catalina.core.Appl ...

昨天我帮一个朋友调过一个他用的tomcat9 然后就一直连接不上数据库我看了他的报错发现是一个jar包一直找不到
最后我一查才知道 tomcat9 要求jdk版本最低为jdk8 而那个jar包版本应该低于jdk8 所以造成了识别不了

最后我建议他改成了tomcat7

南山老妖 · 发表于 2019-8-2 22:39:29

doudou459 发表于 2019-8-2 15:20
昨天我帮一个朋友调过一个他用的tomcat9 然后就一直连接不上数据库我看了他的报错发现是 ...

我刚换回TOMCAT7，没问题了。这几天网上搜索觉得问题出于TOMCAT8的DBCP更新到DBCP2了，需要更改某些jar。我没去尝试。若有大神试过解决DBCP2的问题，麻烦指点。谢谢

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[未处理] centOS tomcat8 数据库连接出问题