2020. 03.27 jdbc中properties用法

package com.guoyun.Utils;

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.sql.*;
import java.util.Properties;

/**
 * ClassName:
 * Function:  ADD FUNCTION
 * Reason:   ADD REASON
 *
 * @author
 * @Date
 * @since Ver 1.1
 */
public class JDBCUtils {
    private static String driver;
    private static String url;
    private static String user;
    private static String password;
    private static Connection connection;
    static {
        try {
            Properties properties=new Properties();
            properties.load(new FileReader("database.properties"));
            driver=properties.getProperty("driver");
            url=properties.getProperty("url");
            user=properties.getProperty("user");
            password=properties.getProperty("password");
            Class.forName(driver);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
public static Connection getConnection(){
    try {

        connection= DriverManager.getConnection(url,user,password);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return connection;
}
    public static void close(ResultSet rs, Statement stmt, Connection conn){
        if( rs != null){
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

        if( stmt != null){
            try {
                stmt.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

        if( conn != null){
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }


}

2020. 03.27 jdbc中properties用法

原文：https://www.cnblogs.com/aojie/p/12579341.html