databaseoperation.java

java调用数据库检验程序是否可以与数据库相连

import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;

public class DataBaseOperation
{
    private Connection connection;                        

    public DataBaseOperation(String driver,String url, String user, String password)
        throws ClassNotFoundException,SQLException
                    
    {
        this.connection = null;
        Class.forName(driver);                             
        this.connection = DriverManager.getConnection(url,user,password); 
    }

    public DataBaseOperation(String driver, String url) throws ClassNotFoundException,SQLException
    {
        this.connection = null;
        Class.forName(driver);
        this.connection = DriverManager.getConnection(url);
    }

    public void finalize() throws SQLException             
    {
        this.connection.close();
    }

    public String getDBAbout() throws SQLException       
    {
        String message = "";
        DatabaseMetaData dbmd = this.connection.getMetaData();
        message = "JDBC驱动程序：" + dbmd.getDriverName() +" "+ dbmd.getDriverVersion() + "\r\n" +
                  "JDBC URL：" + dbmd.getURL() + "\r\n" +
                  "数据库：" + dbmd.getDatabaseProductName() + "\r\n" +
                  "数据库版本：" + dbmd.getDatabaseProductVersion() + "\r\n"+
                  "用户名：" + dbmd.getUserName() + "\r\n";
        return message;
    }
}