两种可能性:
1. 你在server.xml中对于Resource或ResourceParams写的有问题。
2。如果你确信没有问题,那一不定是你的jdbc driver不在server的classpath中,你需要将它们放到tomcat\common\lib或tomcat\share\lib下面。
1. 你在server.xml中对于Resource或ResourceParams写的有问题。
2。如果你确信没有问题,那一不定是你的jdbc driver不在server的classpath中,你需要将它们放到tomcat\common\lib或tomcat\share\lib下面。
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<Resource name="StarFlow/DataSource" auth="Container" scope="Shareable" type="javax.sql.DataSource"/>
<ResourceParams name="StarFlow/DataSource">
<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:@x225:1521:orajyj</value>
</parameter>
<parameter>
<name>username</name><value>workflow</value>
</parameter>
<parameter>
<name>password</name><value>workflow</value>
</parameter>
<parameter>
<name>maxActive</name><value>100</value>
</parameter>
<parameter>
<name>maxIdle</name><value>300</value>
</parameter>
<parameter>
<name>removeAbandoned</name><value>true</value>
</parameter>
<parameter>
<name>logAbandoned</name><value>true</value>
</parameter>
<parameter>
<name>maxWait</name><value>30000</value>
</parameter>
</ResourceParams>web.xml中的部分:
<resource-ref id="ResourceRef_2">
<res-ref-name>StarFlow/DataSource</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>此外class12.jar已经放在tomcat/common/lib下了
server.xml configuration
<Context path="/DBTest" docBase="DBTest"
debug="5" reloadable="true" crossContext="true"> <Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_DBTest_log." suffix=".txt"
timestamp="true"/> <Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"/> <ResourceParams name="jdbc/TestDB">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter> <!-- Maximum number of dB connections in pool. Make sure you
configure your mysqld max_connections large enough to handle
all of your db connections. Set to 0 for no limit.
-->
<parameter>
<name>maxActive</name>
<value>100</value>
</parameter> <!-- Maximum number of idle dB connections to retain in pool.
Set to 0 for no limit.
-->
<parameter>
<name>maxIdle</name>
<value>30</value>
</parameter> <!-- Maximum time to wait for a dB connection to become available
in ms, in this example 10 seconds. An Exception is thrown if
this timeout is exceeded. Set to -1 to wait indefinitely.
-->
<parameter>
<name>maxWait</name>
<value>10000</value>
</parameter> <!-- MySQL dB username and password for dB connections -->
<parameter>
<name>username</name>
<value>javauser</value>
</parameter>
<parameter>
<name>password</name>
<value>javadude</value>
</parameter> <!-- Class name for mm.mysql JDBC driver -->
<parameter>
<name>driverClassName</name>
<value>org.gjt.mm.mysql.Driver</value>
</parameter> <!-- The JDBC connection url for connecting to your MySQL dB.
The autoReconnect=true argument to the url makes sure that the
mm.mysql JDBC Driver will automatically reconnect if mysqld closed the
connection. mysqld by default closes idle connections after 8 hours.
-->
<parameter>
<name>url</name>
<value>jdbc:mysql://localhost:3306/javatest?autoReconnect=true</value>
</parameter>
</ResourceParams>
</Context>web.xml configuration
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<description>MySQL Test App</description>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/TestDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
有另一种方式:
把所有参数放在 <Resource name="jdbc/TestDB"
auth="Container"
type="javax.sql.DataSource"
username="..." password="..." .../> 内作为其参数
而不要用其的子标签实现