mysql - java.sql.SQLException: Cannot create JDBC driver of class '' for connect URL 'null'] with root cause -


i trying establish connection database using jndi up

this context.xml have defined in webapp meta-inf folder

<resource name="jdbc/connectdb" auth="container" type="javax.sql.datasource"         maxtotal="100" maxidle="30" maxwaitmillis="10000" username="root"         password="" driverclassname="com.mysql.jdbc.driver"         url="jdbc:mysql://localhost:3306/connect" />

i calling in web.xml folder using process

<resource-ref>         <res-ref-name>jdbc/connectdb</res-ref-name>         <res-type>javax.sql.datasource</res-type>         <res-auth>container</res-auth>     </resource-ref>

after research resolve error, have tried referencing file in catalina folder using webappname.xml. have added jar in lib folder of tomcat , still error exists.

this error trace

severe: servlet.service() servlet [dispatcher] in context path [/connectmain] threw exception [request processing failed; nested exception org.springframework.jdbc.cannotgetjdbcconnectionexception: not jdbc connection; nested exception java.sql.sqlexception: cannot create jdbc driver of class '' connect url 'null'] root cause java.sql.sqlexception: no suitable driver     @ java.sql.drivermanager.getdriver(drivermanager.java:315)

please missing error

your xml file not location of error. need download jdbc drivers database able connect it.

also, don't think java file issue, again don't know workspace , haven't seen stack trace looks this. problem in method call database in java file calls drivermanager.getconnection([url of db], [username], [password]);


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