[DBUTILS-96] DbUtils#loadDriver(ClassLoader,String) makes DriverManager throwing "No suitable driver found for jdbc" if ClassLoader is not the System's one

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.6

Environment

jdk 1.6

• Assignee: Simone Tripodi
• Reporter: yuyf
• Created: 26/Jul/12 01:35
• Updated: 20/Jul/14 08:48
• Resolved: 06/Aug/12 20:08

Description

By this way(use Dbutil get connect),it will say: No suitable driver found for jdbc:mysql://127.0.0.1:3306/xxx

urls = new URL[1];
urls[0] = new File("d:\mysql_connector_5.1.15_bin.jar").toURL();
URLClassLoader urlClassLoader= new URLClassLoader(urls, ClassLoader.getSystemClassLoader())		
DbUtils.loadDriver(urlClassLoader, driver);

Properties conProps = new Properties(); 
conProps.put("user", user); 
conProps.put("password", pwd); 
conProps.put("defaultRowPrefetch", "20");

scanedConnection = DriverManager.getConnection(url, conProps);

but by this way (use jdbc's api get connect),it's ok

try {
    URL jdbcDriverURL = new File("d:\\mysql_connector_5.1.15_bin.jar").toURL();
    URL[] urls = new URL[1];
    urls[0] = jdbcDriverURL;
    URLClassLoader urlclassLoader = new URLClassLoader(urls, ClassLoader.getSystemClassLoader());
    try {
        java.sql.Driver driverd = (java.sql.Driver) urlclassLoader.loadClass(driver).newInstance();
        System.out.println(driverd.toString());
        Properties props = new Properties();
        props.setProperty("user", theUser);
        props.setProperty("password", thePw);
        try {
            c = driverd.connect(dbUrl, props);
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    } catch (InstantiationException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
} catch (MalformedURLException e1) {
    // TODO Auto-generated catch block
    e1.printStackTrace();
}

is this a bug or my useing falut?