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用Tomcat,最担心的就是配置JNDI的DataSource的时候出现问题,随着各大厂商发布自己的JDBC的实现,兼容性的问题也就越来也突出了... 一般我们都是用Tomcat自带的DBCP来处理,配置如下: <Resource name="jdbc/MyDS" auth="Container" type="javax.sql.DataSource" /> <ResourceParams name="jdbc/MyDS"> <parameter> <name>driverClassName</name> <value>oracle.jdbc.driver.OracleDriver</value> </parameter> <parameter> <name>driverName</name> <value>jdbc:oracle:thin:@server:port:sid</value> </parameter> <parameter> <name>user</name> <value>########</value> </parameter> <parameter> <name>password</name> <value>########</value> </parameter> </ResourceParams> Oracle JDBC Driver for JDK 1.4 or JDK 1.5 http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/htdocs/jdbc_10201.html 不过这个写法,假如在JBuilderX中,跑Tomcat 4.1,加上最新版的 Oracle JDBC Driver会存在问题,系统抛出的错误为: javax.naming.NamingException: Cannot create resource instance at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:189) at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:301) at org.apache.naming.NamingContext.lookup(NamingContext.java:834) at org.apache.naming.NamingContext.lookup(NamingContext.java:181) at org.apache.naming.NamingContext.lookup(NamingContext.java:822) at org.apache.naming.NamingContext.lookup(NamingContext.java:181) at org.apache.naming.NamingContext.lookup(NamingContext.java:822) at org.apache.naming.NamingContext.lookup(NamingContext.java:181) at org.apache.naming.NamingContext.lookup(NamingContext.java:822) at org.apache.naming.NamingContext.lookup(NamingContext.java:194) at org.apache.naming.SelectorContext.lookup(SelectorContext.java:183) at javax.naming.InitialContext.lookup(InitialContext.java:347) 看来DBCP针对java.sql.DataSource相关的实现与ojdbc14.jar存在兼容性的问题,需要按照下面的写法才能OK: <Resource name="jdbc/MyDS" type="oracle.jdbc.pool.OracleConnectionCacheImpl"/> <ResourceParams name="jdbc/MyDS"> <parameter> <name>factory</name> <value>oracle.jdbc.pool.OracleDataSourceFactory</value> </parameter> <parameter> <name>driverClassName</name> <value>oracle.jdbc.driver.OracleDriver</value> </parameter> <parameter> <name>url</name> <value>jdbc:oracle:thin:@server:port:sid</value> </parameter> <parameter> <name>user</name> <value>########</value> </parameter> <parameter> <name>password</name> <value>########</value> </parameter> </ResourceParams> 原来Oracle自己实现了DataSource的工厂类来治理DataSource的建立! 同样发现微软的SQL Server 2000 Driver for JDBC Service Pack 3也存在这个问题! http://www.microsoft.com/downloads/details.aspx?familyid=07287b11-0502-461a-b138-2aa54bfdc03a&displaylang=en 需要如下配置: <Resource name="jdbc/MyDS" auth="Container" type="com.microsoft.jdbcx.sqlserver.SQLServerDataSource"/> <ResourceParams name="jdbc/MyDS"> <parameter> <name>factory</name> <value>com.microsoft.jdbcx.sqlserver.SQLServerDataSourceFactory</value> </parameter> <parameter> <name>driverClassName</name> <value>com.microsoft.jdbcx.sqlserver.SQLServerDataSource</value> </parameter> <parameter> <name>driverName</name> <value>SQLServer</value> </parameter> <parameter> <name>description</name> <value>My DataSource</value> </parameter> <parameter> <name>serverName</name> <value>########</value> </parameter> <parameter> <name>portNumber</name> <value>1433</value> </parameter> <parameter> <name>selectMethod</name> <value>cursor</value> </parameter> <parameter> <name>databaseName</name> <value>########</value> </parameter> <parameter> <name>user</name> <value>########</value> </parameter> <parameter> <name>password</name> <value>########</value> </parameter> <parameter> <name>loginTimeout</name> <value>3000</value> </parameter> </ResourceParams> 返回类别: 教程 上一教程: 使用JAVABEAN高效处理JSP 下一教程: 配置J2EE支持MYSQL 您可以阅读与"当TOMCAT遭遇JBDC DRIVER,出现 \'CANNOT CREATE RESOURCE INSTANCE\'!"相关的教程: · 新一代Java技术即将出现 · Tomcat 5.5.7配置一个APP问题 · 新一代Java技术即将出现 · tomcat 3.1在RedHat下的安装 · JSP中TOMCAT的SQL SERVER2000数据库连接池的配置 |
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