package com.terra.system.helper;
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import com.terra.system.entity.all.StaticData;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import java.sql.*;
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import java.util.*;
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/**
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* Access帮助类
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* @author WWW
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*/
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public class AccessHelper {
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private final static Log log = LogFactory.getLog(AccessHelper.class);
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/**
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* 读取.mdb文件
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*
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* @param mdbPath mdb文件地址
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* @param username 用户名
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* @param password 密码
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*/
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public static List<Map<String, Object>> readMdb(String mdbPath, String username, String password) {
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List<Map<String, Object>> list = new ArrayList<>();
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Connection conn = null;
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PreparedStatement ps = null;
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ResultSet tables = null;
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ResultSet rs = null;
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try {
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Properties prop = new Properties();
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prop.put("charSet", "UTF-8");
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prop.put("user", username);
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prop.put("password", password);
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String dbUrl = "jdbc:ucanaccess://" + mdbPath;
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Class.forName("net.ucanaccess.jdbc.UcanaccessDriver").newInstance();
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conn = DriverManager.getConnection(dbUrl, prop);
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tables = conn.getMetaData().getTables(mdbPath, null, null, new String[]{"TABLE"});
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while (tables.next()) {
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Map<String, Object> tableMap = new HashMap<>(4);
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Set<String> columnList = new HashSet<>();
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List<Map<String, String>> dataList = new ArrayList<>();
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String tableName = tables.getString(3);
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ps = conn.prepareStatement("select * from " + tableName);
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rs = ps.executeQuery();
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ResultSetMetaData data = rs.getMetaData();
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while (rs.next()) {
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Map<String, String> map = new HashMap<>(5);
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for (int i = 1; i <= data.getColumnCount(); i++) {
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String columnName = data.getColumnName(i);
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if (StaticData.MDB_EXCLUDE_FIELDS.contains(columnName)) {
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continue;
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}
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map.put(columnName, rs.getString(i));
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columnList.add(columnName);
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}
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dataList.add(map);
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}
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tableMap.put("name", tableName);
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tableMap.put("column", columnList);
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tableMap.put("data", dataList);
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list.add(tableMap);
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}
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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} finally {
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closeA1l(conn, ps, tables, rs);
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}
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return list;
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}
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/**
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* 关闭所有的资源链接
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*
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* @param conn 连接
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* @param ps 执行语句
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* @param tables 结果集
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* @param rs 结果集
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*/
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private static void closeA1l(Connection conn, PreparedStatement ps, ResultSet tables, ResultSet rs) {
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try {
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if (null != rs) {
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rs.close();
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}
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if (null != tables) {
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tables.close();
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}
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if (null != ps) {
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ps.close();
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}
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if (null != conn) {
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conn.close();
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}
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} catch (Exception ex) {
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//
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}
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}
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}
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