XWiki + MySQL数据库:错误

Question

我已经(据我所知)正确地遵循了xwiki.org上的所有指令，我还到处寻找错误的答案，但不幸的是，我无法自己解决这些错误。

我以两种不同的格式下载了XWiki。第一个是.exe安装程序，第二个是建议的.xar包，这两个包都用于Windows 8，64位计算机上。

第一个程序在“独立”模式下完美地运行，但是一旦将hibernate.cfg.xml文件更改为预设的MySQL设置(这对我的数据库是准确的)，我就会得到一个很长的HTTP 500错误。(这是在我添加了MySQL Connection文件，并根据MySQL上的说明创建了一个xwiki.org数据库之后)，主要问题似乎是它找不到com.mysql.jdbc.Driver，而且在页面后面我收到一个错误，说它不能创建数据库连接池。

与错误相关的代码如下：

<!-- DBCP Connection Pooling configuration
-->
<property name="dbcp.defaultAutoCommit">false</property>
<property name="dbcp.maxActive">50</property>
<property name="dbcp.maxIdle">5</property>
<property name="dbcp.maxWait">30000</property>
<property name="dbcp.whenExhaustedAction">1</property>
<property name="dbcp.ps.whenExhaustedAction">1</property>
<property name="dbcp.ps.maxWait">120000</property>
<property name="dbcp.ps.maxIdle">20</property>
<property name="connection.provider_class">com.xpn.xwiki.store.DBCPConnectionProvider</property>

还有这个

<!-- MySQL configuration.
Uncomment if you want to use MySQL and comment out other database configurations.
-->
<property name="connection.url">jdbc:mysql://localhost/xwiki</property>
<property name="connection.username">xwiki</property>
<property name="connection.password">xwiki</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
<property name="dbcp.ps.maxActive">20</property>
<mapping resource="xwiki.hbm.xml"/>
<mapping resource="feeds.hbm.xml"/>
<mapping resource="activitystream.hbm.xml"/>
<mapping resource="instance.hbm.xml"/>

错误本身看起来是这样的：

HTTP ERROR 500 

Problem accessing /xwiki/bin/view/Main/. Reason: 

Error number 3 in 0: Could not initialize main XWiki context 

Caused by: 

com.xpn.xwiki.XWikiException: Error number 3 in 0: Could not initialize main XWiki context 
at com.xpn.xwiki.XWiki.getMainXWiki(XWiki.java:422) 
at com.xpn.xwiki.XWiki.getXWiki(XWiki.java:491) 
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:152) 
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:128) 
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) 
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) 
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) 
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:735) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) 
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448) 
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:121) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter
(SavedRequestRestorerFilter.java:208) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter
(SetCharacterEncodingFilter.java:111) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455) 
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) 
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) 
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) 
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075) 
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384) 
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) 
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009) 
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) 
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle
(ContextHandlerCollection.java:255) 
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154) 
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) 
at org.eclipse.jetty.server.Server.handle(Server.java:368) 
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest
(AbstractHttpConnection.java:488) 
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete  
(AbstractHttpConnection.java:932) 
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete 
(AbstractHttpConnection.java:994) 
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640) 
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) 
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) 
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628) 
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) 
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) 
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) 
at java.lang.Thread.run(Unknown Source) 
Caused by: com.xpn.xwiki.XWikiException: Error number 3202 in 3: Exception while reading  
document [xwiki:XWiki.XWikiServerClass] 
at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:916) 
at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:290) 
at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1515) 
at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1558) 
at com.xpn.xwiki.XWiki.initializeMandatoryClasses(XWiki.java:885) 
at com.xpn.xwiki.XWiki.initXWiki(XWiki.java:855) 
at com.xpn.xwiki.XWiki.<init>(XWiki.java:792) 
at com.xpn.xwiki.XWiki.getMainXWiki(XWiki.java:402) 
... 45 more 
Caused by: org.hibernate.HibernateException: Could not create a DBCP pool. There is an error     
in the hibernate configuration file, please review it. 
at com.xpn.xwiki.store.DBCPConnectionProvider.configure(DBCPConnectionProvider.java:215) 
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider
(ConnectionProviderFactory.java:143) 
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider  
(ConnectionProviderFactory.java:84) 
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:459) 
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:90) 
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2863) 
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2859) 
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1870) 
at com.xpn.xwiki.store.XWikiHibernateBaseStore.initHibernate(XWikiHibernateBaseStore.java:223) 
at com.xpn.xwiki.store.XWikiHibernateBaseStore.checkHibernate(XWikiHibernateBaseStore.java:640) 
at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:789) 
... 52 more 
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver 
class 'com.mysql.jdbc.Driver' 
at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1429) 
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371) 
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044) 
at com.xpn.xwiki.store.DBCPConnectionProvider.configure(DBCPConnectionProvider.java:197) 
... 62 more 
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver 
at java.net.URLClassLoader$1.run(Unknown Source) 
at java.net.URLClassLoader$1.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.net.URLClassLoader.findClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:430) 
at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:383) 
at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1420) 
... 65 more 

Caused by: 

com.xpn.xwiki.XWikiException: Error number 3202 in 3: Exception while reading document   
[xwiki:XWiki.XWikiServerClass] 
at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:916) 
at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:290) 
at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1515) 
at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1558) 
at com.xpn.xwiki.XWiki.initializeMandatoryClasses(XWiki.java:885) 
at com.xpn.xwiki.XWiki.initXWiki(XWiki.java:855) 
at com.xpn.xwiki.XWiki.<init>(XWiki.java:792) 
at com.xpn.xwiki.XWiki.getMainXWiki(XWiki.java:402) 
at com.xpn.xwiki.XWiki.getXWiki(XWiki.java:491) 
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:152) 
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:128) 
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) 
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) 
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) 
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:735) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) 
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:669) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1448) 
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:121) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:144) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter
(SavedRequestRestorerFilter.java:208) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter
(SetCharacterEncodingFilter.java:111) 
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) 
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455) 
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) 
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) 
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) 
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075) 
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384) 
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) 
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009) 
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) 
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle
(ContextHandlerCollection.java:255) 
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154) 
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) 
at org.eclipse.jetty.server.Server.handle(Server.java:368) 
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest
(AbstractHttpConnection.java:488) 
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete
(AbstractHttpConnection.java:932) 
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete
(AbstractHttpConnection.java:994) 
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:640) 
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) 
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) 
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628) 
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) 
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) 
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) 
at java.lang.Thread.run(Unknown Source) 
Caused by: org.hibernate.HibernateException: Could not create a DBCP pool. There is an error     
in the hibernate configuration file, please review it. 
at com.xpn.xwiki.store.DBCPConnectionProvider.configure(DBCPConnectionProvider.java:215) 
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider
(ConnectionProviderFactory.java:143) 
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider  
(ConnectionProviderFactory.java:84) 
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:459) 
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:90) 
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2863) 
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2859) 
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1870) 
at com.xpn.xwiki.store.XWikiHibernateBaseStore.initHibernate(XWikiHibernateBaseStore.java:223) 
at com.xpn.xwiki.store.XWikiHibernateBaseStore.checkHibernate
(XWikiHibernateBaseStore.java:640) 
at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:789) 
... 52 more 
Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver   
class 'com.mysql.jdbc.Driver' 
at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory   
(BasicDataSource.java:1429) 
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371) 
at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044) 
at com.xpn.xwiki.store.DBCPConnectionProvider.configure(DBCPConnectionProvider.java:197) 
... 62 more 
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver 
at java.net.URLClassLoader$1.run(Unknown Source) 
at java.net.URLClassLoader$1.run(Unknown Source) 
at java.security.AccessController.doPrivileged(Native Method) 
at java.net.URLClassLoader.findClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:430) 
at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:383) 
at org.apache.commons.dbcp.BasicDataSource.createConnectionFactory 
(BasicDataSource.java:1420) 
... 65 more 

是否必须使用.xar安装版本才能正确连接到数据库？我也尝试过，用Xampp和Tomcat。Tomcat安装得很好，我可以通过localhost:(port)轻松地访问它。但是，当我试图访问我的xwiki时，我会收到一个HTTP 404错误，它说找不到引用，这很奇怪，因为它显示在Tomcat中的部署列表中的其他文件中，并且显示在那里的Tomcat示例文件(位于同一个目录中)工作得很好.

我有点担心，即使我能够通过Tomcat使XWiki正常工作，我在试图连接MySQL数据库时仍然会得到我稍后提到的第一个错误。

边注:我怀疑在XWiki中发现的和Tomcat中的文件之间可能有冲突，因为我在玩和尝试让事情正常运行的时候看到了其他错误.但我可能错了，因为我目前对Java知之甚少。我看到了几个servlet错误，并且找不到类/文件错误，根据我发现的一个论坛，这是属于jasper.jar和jsp-api.jar__的常见错误，都是在Tomcat中找到的。

无论如何，我愿意尝试安装选项，不管这些选项是否涉及Tomcat。如果有人成功地在XWiki上安装了MySQL数据库，您的帮助将是非常感谢的！

Answer 1

这是几个月前解决的。我在设置中遗漏了一些重要的信息，但现在一切正常。

Answer 2

看来你错过了mysql驱动程序。由于您将默认发行版转换为使用mysql，因此需要下载一个mysql驱动jar并将其部署到‘webapp\xwiki\webapps\lib’目录中。

关于第二个问题，数据库驱动程序错误、xar和tomcat 404之间可能没有联系。xar只是用于导入或导出内容和功能的页面集合，但通常不处理诸如数据库一致性之类的低级内容。Tomcat中的404可能是因为您访问了一个无效的url。可能需要更多关于那个的细节。

Answer 3

首先，关于与Tomcat的潜在冲突，我可以向您保证，这是不可能的，因为Tomcat一直是XWiki团队在生产中使用的。

现在对于MySQL来说，错误是非常清楚的，如果您真的放置了MySQL连接器，那么您就没有将它放在正确的位置。你放的是什么版本的?在#xwiki folder#/WEB-INF/lib/里吗？

XAR包并不是安装XWiki的不同方式，它是一个包含wiki页面的包，在运行时可以在XWiki中导入。也许你是说战争包？