< Resource? name ="jdbc/student" ?auth ="Container" ?type ="javax.sql.DataSource" ? />
< ResourceParams? name ="jdbc/student" >
?? < parameter >
???? < name > factory </ name >
???? < value > org.apache.commons.dbcp.BasicDataSourceFactory </ value >
?? </ parameter >
?? < parameter >
???? < name > username </ name >
???? < value > root </ value >
?? </ parameter >
?? < parameter >
???? < name > password </ name >
???? < value > sa </ value >
?? </ parameter >
?? < parameter >
???? < name > driverClassName </ name >
???? < value > com.mysql.jdbc.Driver </ value >
?? </ parameter >
?? < parameter >
???? < name > url </ name >
???? < value > jdbc:mysql://?localhost:3306/student?useUnicode=true &amp; characterEncoding=UTF-8 </ value >
?? </ parameter >
?? < parameter >
???? < name > maxActive </ name >
???? < value > 20 </ value >
?? </ parameter >
?? < parameter >
???? < name > maxIdle </ name >
???? < value > 5 </ value >
?? </ parameter >
?? < parameter >
???? < name > maxWait </ name >
???? < value > 10000 </ value >
?? </ parameter >
</ ResourceParams >

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

< Resource? name ="jdbc/TestDB" ?auth ="Container" ?type ="javax.sql.DataSource"
??maxActive ="100" ?maxIdle ="30" ?maxWait ="10000"
??username ="javauser" ?password ="javadude" ?driverClassName ="com.mysql.jdbc.Driver"
??url ="jdbc:mysql://localhost:3306/javatest?autoReconnect=true" />