为什么我不能在Spring中使用JavaConfig创建我的数据源？

Question

Can someone please tell me what I am missing I am trying to use JavaConfig in a Spring MVC project to setup the following database but I cant set the driverClass, user, password etc?

Can someone please tell me why

@Bean
public DataSource dataSource() {

    DataSource ds = new DriverManagerDataSource();
    try {
        ds.setDriverClass("com.mysql.jdbc.Driver");
        ds.setUser("jboss");
        ds.setPassword("xoJ4u0Hs");
        ds.setJdbcUrl("jdbc:mysql://6dhdbm01/jboss1");
    } catch (Exception e) {
        logger.error(e.getMessage());
    }
    return ds;
}

I FIXED IT: I HAD TO CHANGE THE CODE TO THIS:

@Bean
    public DataSource dataSource() {

         // com.mchange.v2.c3p0.ComboPooledDataSource ds = new com.mchange.v2.c3p0.ComboPooledDataSource();

        BasicDataSource ds = new BasicDataSource();


        try {

            /*

            This was old code for using C3P0 Database pooling
            ds.setDriverClass("com.mysql.jdbc.Driver");
            ds.setUser("jboss");
            ds.setPassword("xoJ4u0Hs");
            ds.setJdbcUrl("jdbc:mysql://6dhdbm01/jboss1");
            */

            ds.setDriverClassName("com.mysql.jdbc.Driver");
            ds.setUsername("jboss");
            ds.setPassword("xoJ4u0Hs");
            ds.setUrl("jdbc:mysql://6dhdbm01/jboss1");

        } catch (Exception e) {
            logger.error(e.getMessage());
        }
        return ds;
    }

But I am getting this error.. Am I missing something in maven pom.xml

java.lang.ClassNotFoundException: org.apache.commons.pool.impl.GenericObjectPool

Answer 1

My guesses:

• You're importing javax.activation.DataSource rather than javax.sql.DataSource
• com.mysql.jdbc.Driver isn't on classpath
• URL / Credentials are wrong

But really don't have much to go off of, first guess is a compile time issue, second two are deploy time issues.

EDIT: Can't find what symbol? My guess is DriverManagerDataSource as it is not part of core, it's part of spring-jdbc. Also, wouldn't really recommend that DataSource implementation as it isn't a connection pool, it creates a new connection each time, look into commons-dbcp