Mybatis进阶--批量新增数据

原創

2020-05-12 22:01

一、传统JDBC进行批处理操作

package jdbc;

import java.io.InputStream;
import java.sql.*;
import java.util.Properties;

public class jdbcUtil {
    private static class JdbcUtil {
    }

    //处理数据库事务，提交事务
    public static void commit(Connection conn) {
        if (null != conn) {
            try {
                conn.commit();
            } catch (SQLException throwables) {
                throwables.printStackTrace();
            }
        }
    }

    //事务的回滚
    public static void rollback(Connection conn) {
        if (null != conn) {
            try {
                conn.rollback();
            } catch (SQLException throwables) {
                throwables.printStackTrace();
            }
        }
    }

    //事务的开始
    public static void begin(Connection conn) {
        if (null != conn) {
            try {
                conn.setAutoCommit(false);
            } catch (SQLException throwables) {
                throwables.printStackTrace();
            }
        }
    }


    /**
     * 获取数据库的连接
     */
    public static Connection getConnection() throws Exception {
        Properties properties = new Properties();
        //速度快的方式
        //new fileinputStream()
        InputStream is = JdbcUtil.class.getClassLoader().getResourceAsStream("jdbc.properties");
        //jdbc文件 内容 以流的方式加载到properties文件中
        properties.load(is);
        String driver = properties.getProperty("driver");
        String username = properties.getProperty("username");
        String password = properties.getProperty("password");
        String url = properties.getProperty("url");
        Class.forName(driver);

        return DriverManager.getConnection(url, username, password);
    }

    public static void closeResources(Connection conn, Statement statement, ResultSet resultSet){
        if (null!=resultSet){
            try {
                resultSet.close();
            } catch (SQLException throwables) {
                throwables.printStackTrace();
            }
        }
        if (null!=statement){
            try {
                statement.close();
            } catch (SQLException throwables) {
                throwables.printStackTrace();
            }
        }
        if(null!=conn){
            try {
                conn.close();
            } catch (SQLException throwables) {
                throwables.printStackTrace();
            }
        }


    }
}