配置文件路径

$TOMCAT_HOME/conf/context.xml

配置mysql JNDI

添加mysql数据库驱动包
$TOMCAT_HOME/lib/mysql-connector-java-8.0.15.jar
该驱动包需要支持jdk8

<?xml version="1.0" encoding="UTF-8"?>
<Context>
    <WatchedResource>WEB-INF/web.xml</WatchedResource>
    <WatchedResource>WEB-INF/tomcat-web.xml</WatchedResource>
    <WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>
    <Resource auth="Container" name="jdbc/TestDB" type="javax.sql.DataSource" maxTotal="100" maxIdle="30" maxWaitMillis="10000" driverClassName="com.mysql.cj.jdbc.Driver" url="jdbc:mysql://aliyunhost:3306/test" username="root" password="123456" />
</Context>

com.mysql.cj.jdbc.Driver
注意：com.mysql.jdbc.Driver已经过期

配置DB2 JNDI

添加db2数据库驱动包
$TOMCAT_HOME/lib/db2jcc4-4.14.146.jar
该驱动包需要支持jdk8

<?xml version="1.0" encoding="UTF-8"?>
<Context>
    <WatchedResource>WEB-INF/web.xml</WatchedResource>
    <WatchedResource>WEB-INF/tomcat-web.xml</WatchedResource>
    <WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>
    <Resource auth="Container" name="jdbc/TestDB" type="javax.sql.DataSource" maxTotal="100" maxIdle="30" maxWaitMillis="10000" driverClassName="com.ibm.db2.jcc.DB2Driver" url="jdbc:db2://aliyunhost:50000/test" username="test" password="123456" />
</Context>