Java JDBC 无法加载数据源的工厂类
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JDBC Cannot load Factory Class for Data Source
提问by Mark Achrin
I have been having this problem for days and have not managed to fix it. I am using tomcat 7.0 and I am completely unable to get a mysql database connection going. The application I am writing is a jsp dynamic website using the eclipse IDE. I get this error when TomCat 7 starts up:
我已经有这个问题好几天了，一直没能解决。我正在使用 tomcat 7.0，但我完全无法建立 mysql 数据库连接。我正在编写的应用程序是一个使用eclipse IDE 的jsp 动态网站。TomCat 7 启动时出现此错误：
WARNING: Failed to register in JMX: javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.tomcat.jdbc.pool.DataSourceFactory]
I also get this error:
我也收到此错误：
javax.naming.NamingException: Could not load resource factory class [Root exception is java.lang.ClassNotFoundException: org.apache.tomcat.jdbc.pool.DataSourceFactory]
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:84)
at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
at org.apache.naming.NamingContext.lookup(NamingContext.java:826)
at org.apache.naming.NamingContext.lookup(NamingContext.java:145)
at org.apache.naming.NamingContext.lookup(NamingContext.java:814)
at org.apache.naming.NamingContext.lookup(NamingContext.java:145)
at org.apache.naming.NamingContext.lookup(NamingContext.java:814)
at org.apache.naming.NamingContext.lookup(NamingContext.java:145)
at org.apache.naming.NamingContext.lookup(NamingContext.java:814)
at org.apache.naming.NamingContext.lookup(NamingContext.java:159)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:158)
at javax.naming.InitialContext.lookup(Unknown Source)
at test.General.Database.getConnection(Database.java:21)
at test.Controller.LoginServlet.doPost(LoginServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.apache.tomcat.jdbc.pool.DataSourceFactory
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:82)
... 31 more
when I get to this code:
当我看到这段代码时：
try {
Context ctx = new InitialContext();
ds = (DataSource)ctx.lookup("java:comp/env/jdbc/chitchat");
} catch (NamingException e) {
e.printStackTrace();
}
Anyone have any ideas what my problem is? I've had this for quite literally days now and I really want to move on from this.
任何人都知道我的问题是什么？我已经有好几天了，我真的很想继续前进。
采纳答案by Kick
org.apache.tomcat.jdbc.pool.DataSourceFactory jar not exist in ur classpath
你的类路径中不存在 org.apache.tomcat.jdbc.pool.DataSourceFactory jar
回答by Keerthivasan
回答by StephaneM
In what jar is the class org.apache.tomcat.jdbc.pool.DataSourceFactory? Is this jar in your classpath?
org.apache.tomcat.jdbc.pool.DataSourceFactory 类在哪个 jar 中？这个 jar 在你的类路径中吗？
回答by David
I just encountered this when using an Eclipse-downloaded Tomcat. It was missing that tomcat-jdbc.jarthat others mentioned.
我刚刚在使用 Eclipse 下载的 Tomcat 时遇到了这个问题。缺少tomcat-jdbc.jar其他人提到的。
I solved it by downloading a Tomcat zip from the Tomcat website and pointing Eclipse to that instead.
我通过从 Tomcat 网站下载 Tomcat zip 并将 Eclipse 指向它来解决它。
