java.naming错误

[walkman_22]

javax.naming.NameNotFoundException: 名前 jdbc はこのコンテキストにバインドされていません
	at org.apache.naming.NamingContext.lookup(NamingContext.java:770)
	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(Unknown Source)
	at com.sys.util.Struts.<init>(Struts.java:14)
	at com.sys.model.Product.<init>(Product.java:12)
	at com.sys.action.SaveProductAction.execute(SaveProductAction.java:17)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	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:293)
	at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
	at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
	at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
	at java.lang.Thread.run(Unknown Source)

对应的错误处如下：

public class Struts {
	protected Context ctx = new InitialContext();
	protected DataSource ds;
	protected Connection conn;
	
	public Struts() throws Exception {
		ds = (DataSource)ctx.lookup("java:/comp/env/jdbc/struts");
		conn = ds.getConnection();
	}
}

[walkman_22]

该问题已经解决了。又出现新的问题。

情報: Server startup in 686 ms
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1452)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1371)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
	at com.sys.util.Struts.<init>(Struts.java:15)
	at com.sys.model.Product.<init>(Product.java:12)
	at com.sys.action.SaveProductAction.execute(SaveProductAction.java:17)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	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:293)
	at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
	at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
	at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.sql.SQLException: No suitable driver
	at java.sql.DriverManager.getDriver(Unknown Source)
	at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createConnectionFactory(BasicDataSource.java:1437)
	... 23 more

[walkman_22]

自己顶一个。

[五哥]

org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'

Caused by: java.sql.SQLException: No suitable driver


1、连接用的jar存在 ？

2、连接的URL正常 ？

[五哥]

at com.sys.util.Struts.<init>(Struts.java:15)
at com.sys.model.Product.<init>(Product.java:12)
at com.sys.action.SaveProductAction.execute(SaveProductAction.java:17)

[「已注销」]

你的第一个问题是什么情况可以说说不？

[walkman_22]

[Quote=引用 3 楼 的回复:]
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'

Caused by: java.sql.SQLException: No suitable driver


1、连接用的jar存在 ？

2、连接的URL正常 ？
……
[/Quote]

问题刚刚解决了。在context.xml中设置以后，可以正常访问了。

这是仿照网上的例子做的，例子中有错误。