Tomcat，Java和SQL Server 2008 R2:无法为连接URL'null'创建类''的JDBC驱动程序 [英] Tomcat, Java & SQL Server 2008 R2: Cannot create JDBC driver of class '' for connect URL 'null'

问题描述

我正在使用Tomcat和Java(通过Eclipse)和SQL Server 2008 R2

I am using Tomcat and Java (through Eclipse) and SQL Server 2008 R2

我得到了

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

我还尝试了部署到Tomcat 7，但出现了完全相同的错误. (在这种情况下，我确保sqljdbc4.jar位于Tomcat的lib目录中，而不只是在WAR中)

I also tried deploying to Tomcat 7 and I got exactly the same error. (I made sure that in this case the sqljdbc4.jar was in the lib directory of Tomcat, rather than just in the WAR)

任何人都可以帮忙吗?谢谢！

Can anyone help? Thanks!

我的代码如下:

Server.xml

<GlobalNamingResources>
<Resource type="javax.sql.DataSource" auth="Container"
        name="jdbc/charmDB"
        factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
        driverClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver"
        url="jdbc:sqlserver://localhost:1433;databaseName=CH;
        integratedSecurity=true"
        />

Web.xml

<resource-ref>
  <description>CH Database</description>
  <res-ref-name>jdbc/charmDB</res-ref-name>
  <res-type>javax.sql.DataSource</res-type>
  <res-auth>Container</res-auth>
</resource-ref> 

Java代码

InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup("java:comp/env/jdbc/charmDB");
Connection con = ds.getConnection();

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