动态创建MySQL数据库

 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;

 public class CreateDataSource {

 /**
 * @param args
 */
 public static void main(String[] args) {
    // TODO Auto-generated method stub
    String database = "test2";
    new CreateDataSource().getConn(database);
 }

 String mysqlDriver = "com.mysql.jdbc.Driver";
 String url = "jdbc:mysql://localhost:3306/test1";
 String newUrl = "jdbc:mysql://localhost:3306/";
 String username = "root";
 String password = "root";
 Connection conn = null;
 Connection newConn = null;

 public Connection getConn(String database) {

    try {
     Class.forName(mysqlDriver);
    } catch (ClassNotFoundException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
    try {
     String tableSql = "create table t_user (username varchar(50) not null primary key,"
       + "password varchar(20) not null ); ";
     String databaseSql = "create database " + database;

     conn = DriverManager.getConnection(url, username, password);
     Statement smt = conn.createStatement();
     if (conn != null) {
      System.out.println("数据库连接成功！");

      smt.executeUpdate(databaseSql);

      newConn = DriverManager.getConnection(newUrl + database,
        username, password);
      if (newConn != null) {
       System.out.println("已经连接到新创建的数据库：" + database);

       Statement newSmt = newConn.createStatement();
       int i = newSmt.executeUpdate(tableSql);//DDL语句返回值为0;
       if (i == 0) {
        System.out.println(tableSql + "表已经创建成功！");
       }
      }
     }

    } catch (SQLException e1) {
     // TODO Auto-generated catch block
     e1.printStackTrace();
    }
    return conn;
 }
 }