实践了C3PO+DBUTILS.C3PO用于获取数据库连接池,DBUTILS用于返回的resultrest与javabeanmapping。
import java.beans.PropertyVetoException;
import java.sql.Connection;
import java.sql.SQLException;
import org.apache.commons.dbutils.QueryRunner;
import com.mchange.v2.c3p0.ComboPooledDataSource;
public class DBFactory {
final private static String MYSQL_DRIVER = "com.mysql.jdbc.Driver";
final private static String ORCL_DRIVER = "oracle.jdbc.driver.OracleDriver";
private ComboPooledDataSource dataSource;
private DBFactory(String dbUrl, String dbUser, String dbPwd, String driver) {
try {
dataSource = new ComboPooledDataSource();
dataSource.setDriverClass(driver);
dataSource.setJdbcUrl(dbUrl);
dataSource.setUser(dbUser);
dataSource.setPassword(dbPwd);
dataSource.setInitialPoolSize(2);
dataSource.setMinPoolSize(1);
dataSource.setMaxPoolSize(10);
dataSource.setMaxStatements(50);
dataSource.setMaxIdleTime(60);
dataSource.setAcquireRetryAttempts(0);
} catch (PropertyVetoException e) {
throw new RuntimeException(e);
}
}
private static DBFactory getMySqlInstance(String dbUrl, String dbUser,
String dbPwd) {
return new DBFactory(dbUrl, dbUser, dbPwd, MYSQL_DRIVER);
}
private static DBFactory getOrclInstance(String dbUrl, String dbUser,
String dbPwd) {
return new DBFactory(dbUrl, dbUser, dbPwd, ORCL_DRIVER);
}
private Connection getConnection() {
try {
return dataSource.getConnection();
} catch (SQLException e) {
throw new RuntimeException("Get Connection Error", e);
}
}
public void close() {
dataSource.close();
}
public static QueryRunner getMySqlQueryRunner(String dbURL,
String username, String password) {
return new QueryRunner(
getMySqlInstance(dbURL, username, password).dataSource);
}
public static QueryRunner getOrclQueryRunner(String dbURL, String username,
String password) {
return new QueryRunner(
getOrclInstance(dbURL, username, password).dataSource);
}
public static Connection getMySqlConnection(String dbURL, String username,
String password) {
return getMySqlInstance(dbURL, username, password).getConnection();
}
public static Connection getOrclConnection(String dbURL, String username,
String password) {
return getOrclInstance(dbURL, username, password).getConnection();
}
public static final String DB_URL = "jdbc:mysql://127.0.0.1/test";
public static final String DB_USERNAME = "username";
public static final String DB_PASSWORD = "password";
public static void main(String[] args) {
QueryRunner passportQR = DBFactory.getOrclQueryRunner(DB_URL,
DB_USERNAME, DB_PASSWORD);
System.out.println(passportQR.toString());
}
}
C3P0+DBUTILS结合使用实践
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转载自xiaopeng8236.iteye.com/blog/2185439
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