-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Sreyan,
On 8/28/15 3:11 PM, Sreyan Chakravarty wrote: > Okay I am trying to use connection pooling for my project which > uses Maven as a build tool. Now the JDBC Driver is listed as a > maven dependency. Tomcat however cant find it when I try to do > > ds.getConnection (ie. get a JDBC connection from a datasource). > > The error that I am getting is -: > > java.sql.SQLException: Cannot create JDBC driver of class '' for > connect URL 'null' > > [snip] > > Caused by: java.sql.SQLException: No suitable driver at > java.sql.DriverManager.getDriver(DriverManager.java:315) at > org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createConnectionFactory(B asicDataSource.java:2049) > > ... 27 more > > As you can see in the end it says that caused by "No suitable > driver" Where is your mysql-*.jar file? > <Context> > > <Resource name="jdbc/TestDB" auth="Container" > type="javax.sql.DataSource" maxTotal="100" maxIdle="30" > maxWaitMillis="10000" removeAbandonedOnBorrow="true" > timeBetweenEvictionRunsMillis="10000" > minEvictableIdleTimeMillis="6000" > removeAbandonedOnMaintenance="true" logAbandoned="true" > username="sreyan" password="sreyan" > driverClassName="com.mysql.jdbc.Driver" > url="jdbc:mysql://localhost:3306/practice"/> <Realm > className="org.apache.catalina.realm.DataSourceRealm" > dataSourceName="jdbc/TestDB" userTable="users" > userNameCol="user_id" userCredCol="user_pass" > userRoleTable="user_roles" roleNameCol="role_name"> > > <CredentialHandler className = > "org.apache.catalina.realm.SecretKeyCredentialHandler" algorithm = > "PBEWITHHMACSHA384ANDAES_256" iterations = "111111" saltLength = > "20" /> > > </Realm> </Context> I'm glad you got the CredentialHandler stuff working (or did you?). NOTE: your <Realm> is going to need to have this attribute added to it in order to work: localDataSource="true" > I have used the Maven webapp archetype for creating the project. > > How do I get Tomcat to load the driver at start up. Also I have put > the JDBC Driver at $Catalina_Home/lib. But even this has no help. > All my other projects that don't use Maven can use connection > pooling perfectly with the above configurations. Do you have the JDBC driver in both places (lib/ and webapps/[app]/WEB-INF/lib) or just in Tomcat's lib/ directory? > Where am I going wrong ? Where do you keep the <resource-ref> > declaration ? After the servlet mappings ? I've found that <resource-ref> is entirely unnecessary, but that may be because you have declared the <Resource> in your app's META-INF/context.xml file, so your application already knows it's local. - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJV4LdEAAoJEBzwKT+lPKRYHr4P/3Ewp4bFEOSU7SG17nzmMK9Q YpT8g+Zd8AFuF5uKH/IjogFMaZD5wgYalImjMxp1/KzgT3XULK0YWfd1NZcK276i kxXNEMB7ybjmbETASVGh/BDrCNn/v6GPv1TCI/mrjsrcP4iRHeUrLiMjfk9KxdaO n2kmn770bvBmYn/VvILu9KTLF1rWh/aY75mdUc2q5mtyqdC7dg+Ky0aeZCdQj5yM yxJCInN8ntk/UFIO2ycDoosgdQIvA9c0+4VluKJ7tGLSc0QRrEaLjNnAHn3J/evP jpUQTSnhgD9G9dzjVNEtNcwTFbPNemdItpSVFPHB3p6An5sE6uKY4hkTiCDAwTk5 4cp8fkpabVvSz0+FEYZ9FSOqeun2Bn61bJTqPM4Yk9Z9dfC92CcKkC8tnjnVyPaK DGgMxEFFZgBza9BZAtcGWn3CzOWBQvRJCiK/xm02dQKHYyszA33W/h9pGB1hIWJT hePUusot0w9p8IgDhFh4+0cTkTNAVUnIQWnPuHsdUn5Itc0qql1LDWRdhWlQMc6W tp3Oqt7noSnoZpIa2mLimXW/36QOkm1nxZl3urnbTlsxPuAmfrEt/ndfIoWPlhcN 1jbAF7Kh4k4wdBbu4SNptl1xqb2GVD3f+BcuSQr3s2OkYd8fXQqFzIDjS9JzWvD5 iX2CYicMQroQhgS/06MQ =oogU -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
