JAVA 操作 DBF 文件数据库

1、依赖夹包

javadbf-[].4.1.jar
jconn3.jar

2、添加属性文件 jdbc.properties

jdbc.driverClassName=com.sybase.jdbc3.jdbc.SybDriver
jdbc.url=jdbc:sybase:Tds:ip:port/dbname
jdbc.username=sa
jdbc.password=******

3、实现代码

package com.XXX.weitedbf.util;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
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.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.linuxense.javadbf.DBFField;
import com.linuxense.javadbf.DBFWriter;

/**
 * @author zsh
 * 时间:2015-01-05
 * 描述：将数据库数据 备份为dbf文件
 */
public class WriteDBF {

    private static final String LINE = "\r\n"; //换行符
    private static final String TAB = "\t";    //制表符

    private static String url;
    private static String driveName;
    private static String username;
    private static String password;

    private static final boolean printSql = true;

    static{
          Properties p = new Properties();
            try {
                InputStream in = WriteDBF.class.getResourceAsStream("/jdbc.properties");
                p.load(in);
                in.close();
                if(p.containsKey("jdbc.driverClassName")){
                    driveName = p.getProperty("jdbc.driverClassName");
                }
                if(p.containsKey("jdbc.url")){
                    url = p.getProperty("jdbc.url");
                }
                if(p.containsKey("jdbc.username")){
                    username = p.getProperty("jdbc.username");
                }
                if(p.containsKey("jdbc.password")){
                    password = p.getProperty("jdbc.password");
                }
            } catch (IOException ex) {
                Logger.getLogger(WriteDBF.class.getName()).log(Level.SEVERE, null, ex);
            }
    }

    //传入参数
    // "table=aa;where=\ and\ YEAR\ ='2014';path=E:\\xxxx.DBF"
    public static void main(String[] args) {
        try {
            if(args.length < 1){
                System.out.println("参数传入错误.......");
                return;
            }

            String value = args[0];
            String[] values = value.split(";");

            String tableName = values[0].substring(values[1].indexOf("=") + 1);
            String filte = values[1].substring(values[1].indexOf("=") + 1).replace("\\", "");
            String path = values[2].substring(values[1].indexOf("="));

            System.out.println("开始启动连接.......");
            Connection conn = getConnection();
            System.out.println("数据连接成功.......");

            //数据库查询数据
            //gb
            //ba
            //n_wt401_2014_export
            Map map = getData(conn, tableName, filte);
            System.out.println("开始导出数据.......");

            List<Map> fieldList = new ArrayList<Map>();
            List<Map> dataList = new ArrayList<Map>();

            fieldList = (List<Map>) map.get("fieldList");
            dataList = (List<Map>) map.get("dataList");

            //写DBF文件
            writeDBF(fieldList, dataList, path);

            System.out.println("导出完成!文件路径：" + path);
        } catch (Exception e) {
            System.out.println("数据库连接失败......" + LINE + e.getMessage());
        }

    }

    // 获取数据库连接
    public static Connection getConnection() throws ClassNotFoundException, SQLException, InstantiationException, IllegalAccessException {
        try {
            Class.forName(driveName).newInstance();
            Properties sysProps = System.getProperties();
            sysProps.put("user", username); // 设置数据库访问用户名
            sysProps.put("password", password); // 密码
            sysProps.put("charset", "cp936");
            return DriverManager.getConnection(url, sysProps);
        } catch (InstantiationException e) {
            throw e;
        } catch (IllegalAccessException e) {
            throw e;
        }
    }

    /**
     * @描述：dbf 文件操作
     * @author
     * @param fieldList
     *            表头集合
     * @param dataList
     *            数据集合
     * @param path
     *            存放路径
     */
    @SuppressWarnings("rawtypes")
    private static void writeDBF(List<Map> fieldList, List<Map> dataList, String path) {
        OutputStream fos = null;
        try {
            // 定义DBF文件字段
            DBFField[] fields = new DBFField[fieldList.size()];
            int row = 0;
            for (Map map : fieldList) { // 表头
                String name = map.get("name").toString();
                if (name.length() >= 10)//字段名长度不能超过10
                    name = name.substring(0, 9);
                int length = Integer.parseInt(map.get("length").toString());

                fields[row] = new DBFField();
                fields[row].setName(name);
                fields[row].setDataType(DBFField.FIELD_TYPE_C);
                fields[row].setFieldLength(length);
                row++;
            }

            // 定义DBFWriter实例用来写DBF文件
            DBFWriter writer = new DBFWriter();
            // 把字段信息写入DBFWriter实例，即定义表结构
            writer.setFields(fields);
            row = 0;
            int size = dataList.size();
            int nowRow = 0;
            for(Map map : dataList){
                Object[] rowData = new Object[fieldList.size()];
                for(Map fMap : fieldList){
                    Object key = fMap.get("name");
                    rowData[row] = map.get(key)==null?null: map.get(key).toString();
                    row++;
                }
                row = 0;
                nowRow++;

                if(nowRow % 10 == 0)
                    System.out.println("当前进度 : " + nowRow +"/" + size);
                writer.addRecord(rowData);
            }
            File file = new File(path);
            fos = new FileOutputStream(file);
            // 写入数据
            writer.write(fos);

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                fos.close();
            } catch (Exception e) {

            }
        }
    }

    /**
     * @描述： 获取数据数据库数据和表头字段
     * @param connection
     *            数据库链接
     * @param tableName
     *            表名
     * @param filte
     *            查询条件 例如： and a=a and b>1 ...
     * @return map ["fieldList" 字段名,"dataList" 数据集合]
     * @throws SQLException
     */
    @SuppressWarnings("rawtypes")
    private static Map getData(Connection connection, String tableName, String filter) throws SQLException {
        String sql = "select * from " + tableName + " where 1 = 1";

        if (filter != null && !"".equals(filter))
            sql += filter;

        if (printSql)
            System.out.println("sql : " + sql);

        PreparedStatement ps = null;
        ResultSet rs = null;
        ps = connection.prepareStatement(sql);
        rs = ps.executeQuery();
        ResultSetMetaData md = rs.getMetaData();
        int columnCount = md.getColumnCount();

        List<Map> fieldList = new ArrayList<Map>();// 表头集合
        for (int i = 1; i <= columnCount; i++) {
            Map map = new HashMap();
            map.put("name", md.getColumnName(i));
            map.put("length", md.getColumnDisplaySize(i));
            map.put("type", (byte) md.getColumnType(i));
            fieldList.add(i - 1, map);
        }

        List dataList = new ArrayList();
        while (rs.next()) {// 数据集合
            Map dataMap = new HashMap();
            for (Map map : fieldList) {
                String name = map.get("name").toString();
                dataMap.put(name, rs.getObject(name));
            }
            dataList.add(dataMap);
        }

        Map retMap = new HashMap();
        retMap.put("fieldList", fieldList);
        retMap.put("dataList", dataList);

        if (rs != null) rs.close();
        if (ps != null) ps.close();
        if (connection != null) connection.close();

        return retMap;
    }
}

4、打包后执行jar文件批处理(可显示打印控制台信息)

java -jar dbf.jar "aa;where=\ and\ YEAR\ ='2014';path=E:\\aa.DBF"
pause;