Mdb文件工具类，UCanAccess使用，Access数据库操作

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©Copyright 蕃薯耀 2020-01-09

https://www.cnblogs.com/fanshuyao/

使用Ocbc连接是区分电脑是32位还是64位的，需要安装相应的驱动文件，不方便，所以采用第三方的Jar包（UCanAccess）

UCanAccess-4.0.4-bin.zip（自行搜索）

需要的Jar包：

ucanaccess-4.0.4.jar

在Lib文件的jar包：

commons-lang-2.6.jar

commons-logging-1.1.3.jar

hsqldb.jar

jackcess-2.1.11.jar

import java.io.File;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import org.apache.log4j.Logger;

import com.plan.commons.Row;
import com.plan.commons.RowImpl;

public class MdbUtils {

    private static Logger log = Logger.getLogger(MdbUtils.class);
    //odbc方式区分32位和64位系统
    /*
    private final static String JDBC_DRIVER = "sun.jdbc.odbc.JdbcOdbcDriver";
    private final static String JDBC_URL = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=";
    */

    //使用UCanAccess
    private final static String JDBC_DRIVER = "net.ucanaccess.jdbc.UcanaccessDriver";
    private final static String JDBC_URL = "jdbc:ucanaccess://";

    public static void close(ResultSet resultSet, Statement statement, Connection connection){
        try {
            if(resultSet != null){
                resultSet.close();
                //log.info("关闭mdb resultSet连接。");
                //System.out.println("关闭mdb resultSet连接。");
            }
            if(statement != null){
                statement.close();
                //log.info("关闭mdb statement连接。");
                //System.out.println("关闭mdb statement连接。");
            }
            if(connection != null){
                connection.close();
                //log.info("关闭mdb connection连接。");
                //System.out.println("关闭mdb connection连接。");
            }
        } catch (SQLException e) {
            e.printStackTrace();
            log.error("关闭mdb连接出错。" + e);
        }
    }

    /**
     * mdb文件获取连接
     * @param absoluteFilePath
     * @return
     */
    public static Connection getConn(String absoluteFilePath){
        log.info("mdb文件路径absoluteFilePath=" + absoluteFilePath);

        Properties prop = new Properties();
        prop.put("charset", "utf-8");//解决中文乱码（GB2312/GBK）
        //prop.put("user", "");
        //prop.put("password", "");

        String url = JDBC_URL + absoluteFilePath;
        Connection connection = null;
        try {
            connection = DriverManager.getConnection(url, prop);
        } catch (SQLException e) {
            e.printStackTrace();
            log.info("mdb文件获取连接出错。Exception=" + e);
        }
        return connection;
    }

    /**
     * 查询mdb文件的表数据
     * @param absoluteFilePath mdb文件绝对路径
     * @param sql 查询的sql语句
     * @return
     */
    public static List<Row> read(String absoluteFilePath, String sql){
        log.info("mdb文件路径absoluteFilePath=" + absoluteFilePath);
        log.info("mdb查询sql=" + sql);

        List<Row> rowList = new ArrayList<Row>();
        Properties prop = new Properties();
        prop.put("charset", "utf-8");//解决中文乱码（GB2312/GBK）
        //prop.put("user", "");
        //prop.put("password", "");

        String url = JDBC_URL + absoluteFilePath;
        //PreparedStatement preparedStatement = null;
        Statement statement = null;
        ResultSet resultSet = null;
        Connection connection = null;
        try{
            Class.forName(JDBC_DRIVER);
            connection = DriverManager.getConnection(url, prop);
            statement = connection.createStatement();
            resultSet = statement.executeQuery(sql);
            ResultSetMetaData resultSetMetaData = resultSet.getMetaData();

            while(resultSet.next()){
                Row row = new RowImpl();
                for(int i=1; i<= resultSetMetaData.getColumnCount(); i++){
                    String columnName = resultSetMetaData.getColumnName(i);//列名
                    Object columnValue = resultSet.getObject(i);
                    row.addColumn(columnName, columnValue);
                }
                rowList.add(row);
            }
        }catch (Exception e) {
            e.printStackTrace();
            log.info("mdb文件读取sql出错。Exception=" + e);
            throw new RuntimeException(e);
        }finally{
            close(resultSet, statement, connection);
        }
        return rowList;
    }

    /**
     * 查询mdb文件的表数据
     * @param file File
     * @param sql 查询的sql语句
     * @return
     */
    public static List<Row> read(File file, String sql){
        return read(file.getAbsolutePath(), sql);
    }

    /**
     * 更新mdb文件的表数据，返回更新的记录数量，0表示没有更新（ID不允许更新）
     * @param absoluteFilePath mdb文件绝对路径
     * @param sql 查询的sql语句
     * @return
     */
    public static int update(String absoluteFilePath, String sql){
        log.info("mdb文件绝对路径，absoluteFilePath=" + absoluteFilePath);
        log.info("mdb文件更新，sql=" + sql);

        Properties prop = new Properties();
        prop.put("charset", "utf-8");//解决中文乱码（GB2312/GBK）

        String url = JDBC_URL + absoluteFilePath;
        Statement statement = null;
        Connection connection = null;
        int updateSize = 0;
        try{
            Class.forName(JDBC_DRIVER);
            connection = DriverManager.getConnection(url, prop);
            statement = connection.createStatement();
            updateSize = statement.executeUpdate(sql);

        }catch (Exception e) {
            e.printStackTrace();
            log.info("mdb文件更新sql出错。Exception=" + e);
            throw new RuntimeException(e);
        }finally{
            close(null, statement, connection);
        }
        log.info("mdb更新数量，updateSize=" + updateSize + "。sql="+sql);
        return updateSize;
    }

    /**
     * 更新mdb文件的表数据，返回更新的记录数量，0表示没有更新
     * @param absoluteFilePath mdb文件绝对路径
     * @param sql 查询的sql语句
     * @return
     */
    public static int update(String absoluteFilePath, String sql, List<Object> params){
        log.info("mdb文件路径absoluteFilePath=" + absoluteFilePath);
        log.info("mdb更新sql=" + sql);
        Properties prop = new Properties();
        prop.put("charset", "utf-8");//解决中文乱码（GB2312/GBK）

        String url = JDBC_URL + absoluteFilePath;
        PreparedStatement preparedStatement = null;
        Connection connection = null;
        int updateSize = 0;
        try{
            Class.forName(JDBC_DRIVER);
            connection = DriverManager.getConnection(url, prop);
            preparedStatement = connection.prepareStatement(sql);
            if(params != null && params.size() > 0){
                for(int i=0; i<params.size(); i++){
                    preparedStatement.setObject(i + 1, params.get(i));
                }
            }
            updateSize = preparedStatement.executeUpdate();

        }catch (Exception e) {
            e.printStackTrace();
            log.info("mdb文件更新sql出错。Exception=" + e);
            throw new RuntimeException(e);
        }finally{
            close(null, preparedStatement, connection);
        }
        log.info("mdb更新数量，updateSize=" + updateSize + "。sql="+sql);
        return updateSize;
    }

    /**
     * mdb文件sql执行（如新增、删除字段），成功返回true
     * @param absoluteFilePath mdb文件绝对路径
     * @param sql 查询的sql语句
     * @return
     */
    public static boolean execute(String absoluteFilePath, String sql){
        log.info("mdb文件绝对路径，absoluteFilePath=" + absoluteFilePath);
        log.info("mdb文件sql执行，sql=" + sql);

        Properties prop = new Properties();
        prop.put("charset", "utf-8");//解决中文乱码（GB2312/GBK）

        String url = JDBC_URL + absoluteFilePath;
        Statement statement = null;
        Connection connection = null;
        boolean result = false;
        try{
            Class.forName(JDBC_DRIVER);
            connection = DriverManager.getConnection(url, prop);
            statement = connection.createStatement();
            statement.execute(sql);
            result = true;
            log.info("mdb文件执行sql成功。sql=" + sql);
        }catch (Exception e) {
            e.printStackTrace();
            log.info("mdb文件执行sql出错。Exception=" + e);
            throw new RuntimeException(e);
        }finally{
            close(null, statement, connection);
        }
        return result;
    }

    public static void main(String[] args) {
        /*
        String sql = "select * from cu_proj_zxgh_land";
        //List<Map<String, Object>> listMap = read("C:/db/test.mdb", sql);
        List<Row> rowList = read("C:/db/02-地块划分与指标控制图.mdb", sql);
        if(rowList != null && rowList.size() > 0){
            System.out.println("=====listMap.size()="+rowList.size());
            for (Row row : rowList) {
                System.out.println(row.toString());
                System.out.println("");
            }
        }
        */

        /*
        //更新数据
        String sql = "update t_user set age=199 where id=1";
        System.out.println(update("C:/db/test.mdb", sql));
        */

        //preparedStatement
        /*
        String sql = "update t_user set age=?,email=? where id=?";
        List<Object> params = new ArrayList<Object>();
        params.add(99);
        params.add("bbb@qq.com");
        params.add(1);
        System.out.println(update("C:/db/test.mdb", sql, params));
        */

        //增加列
        /*
        String sql = "alter table t_user add column gh_id int";
        //String sql = "alter table t_user add column my_id datetime not null default now()";
        System.out.println(execute("C:/db/test.mdb", sql));
        */
    }

}

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©Copyright 蕃薯耀 2020-01-09

https://www.cnblogs.com/fanshuyao/