无法创建资源实例。javax.naming
正在尝试使用tomcat池连接到数据库 这是我的密码: web.xml无法创建资源实例。javax.naming,java,tomcat,jndi,Java,Tomcat,Jndi,正在尝试使用tomcat池连接到数据库 这是我的密码: web.xml <resource-ref> <description>Resource pour le pool de connexion vers tomcat</description> <res-ref-name>jdbc/pool</res-ref-name> <res-type>javax.sql.DataSource</res-ty
<resource-ref>
<description>Resource pour le pool de connexion vers tomcat</description>
<res-ref-name>jdbc/pool</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
我有一个exeption正在尝试查找^并创建数据源:
GRAVE: null
javax.naming.NamingException: Cannot create resource instance
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.apache.naming.NamingContext.lookup(NamingContext.java:793)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:152)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at cb.model.dao.BankDAONatural.<init>(BankDAONatural.java:35)
at cb.model.dao.BankDAONatural.getInstance(BankDAONatural.java:42)
at cb.model.dao.DAOFactory.<init>(DAOFactory.java:31)
at cb.model.dao.DAOFactory.getInstance(DAOFactory.java:37)
at cb.control.generalDispatcher.init(generalDispatcher.java:33)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:809)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:662)
GRAVE:null
javax.naming.NamingException:无法创建资源实例
位于org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143)
位于javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:793)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:140)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:781)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:140)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:781)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:140)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:781)
位于org.apache.naming.NamingContext.lookup(NamingContext.java:153)
位于org.apache.naming.SelectorContext.lookup(SelectorContext.java:152)
在javax.naming.InitialContext.lookup(InitialContext.java:392)中
位于cb.model.dao.BankDAONatural(BankDAONatural.java:35)
位于cb.model.dao.BankDAONatural.getInstance(BankDAONatural.java:42)
位于cb.model.dao.DAOFactory(DAOFactory.java:31)
位于cb.model.dao.DAOFactory.getInstance(DAOFactory.java:37)
位于cb.control.generalDispatcher.init(generalDispatcher.java:33)
位于javax.servlet.GenericServlet.init(GenericServlet.java:212)
位于org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
位于org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:809)
位于org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
位于org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
位于org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
位于org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
位于org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
位于org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
位于org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
位于org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
位于org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
运行(Thread.java:662)
多谢各位。这可能是我在数据源方面没有得到的东西,这是具有讽刺意味的。。。你的链接是死的,我认为EJP意味着你必须删除ResourceParams标签。这应该行得通。请重新检查您正在查找Tomcat文档的正确版本。@user690022@mschonaker抱歉修复了链接。
DataSource ds;
//récupération de la source de donnée
Context initCtx = new InitialContext();
ds = (DataSource) initCtx.lookup("java:comp/env/jdbc/pool");
conn = ds.getConnection();
GRAVE: null
javax.naming.NamingException: Cannot create resource instance
at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:143)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
at org.apache.naming.NamingContext.lookup(NamingContext.java:793)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:140)
at org.apache.naming.NamingContext.lookup(NamingContext.java:781)
at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:152)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at cb.model.dao.BankDAONatural.<init>(BankDAONatural.java:35)
at cb.model.dao.BankDAONatural.getInstance(BankDAONatural.java:42)
at cb.model.dao.DAOFactory.<init>(DAOFactory.java:31)
at cb.model.dao.DAOFactory.getInstance(DAOFactory.java:37)
at cb.control.generalDispatcher.init(generalDispatcher.java:33)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:809)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:662)