package com.util;
/** * Java生成mdb文件[MS Access文件] * 1. 在ClassPath下存一个空的blank.mdb. (也就是在你的项目中包含一个空白的.mdb文件) * 2. 将项目中的blank.mdb另存到新的路径. (可能是用户选择要导出mdb文件的保存路径) * 3. 将.mdb作为数据源, 用JDBC ODBC添加数据. 注: jdbc-odbc 在jre中是有的jre/lib/rt.jar. 也就是不需要引入额外的jar包. 注:步骤3中, 你可以执行CREATE Table的SQL语句. 如果你已经知道了DB的SCHEMA, 那更简单了, 你直接在你的项目中包含一个带有SCHEMA的空的.mdb文件, 这样在步骤3的时候, 不需要再做表结构的创建, 只需要做数据插入即可. */
import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.sql.Connection; import java.sql.DriverManager; import java.sql.Statement;
public class AccessUtil { private String softPath; private String softAccessPath; private Connection connection;
private Statement statement;
// 空白mdb文件路径. 直接保存在src/cn/iwoo/dataexport/common/下. private final String blankMdbFilePath = "com/util/";
// 空白mdb文件名 private final String blankMdbFileName = "blank.mdb";
// 需要保存到的新的mdb文件路径和名 //private String savedMdbFilePathAndName = defaultSavedMdbFilePath + defaultSavedMdbFileName; private String savedMdbFilePathAndName = softAccessPath + defaultSavedMdbFileName;
// 新mdb文件路径 public static final String defaultSavedMdbFilePath = "C://access//";
// 新mdb文件名 public static final String defaultSavedMdbFileName = "database.mdb";
// mdb文件后缀 public static final String defaultSavedMdbFileExtension = ".mdb";
// 标准的单例模式 private static AccessUtil instance = new AccessUtil();
private AccessUtil() { }
public static AccessUtil getInstance() { return instance; }
/** *
* Description: 设置待保存的新的mdb文件路径和名 *
*/ public void setSavedFilePathAndName(String newFilePathAndName) { this.savedMdbFilePathAndName = newFilePathAndName; }
/** *
* Description: 删除已经存在的mdb文件 *
*/ public void deleteOldMdbFile() throws Exception { File oldTargetFile = new File(savedMdbFilePathAndName); if (oldTargetFile.exists()) { oldTargetFile.delete(); } }
/** *
* Description: 将空白mdb文件拷贝到特定目录 *
*/ public void copyBlankMdbFile(String savePath, String fileName) throws Exception { InputStream is = this.getClass().getClassLoader().getResourceAsStream( blankMdbFilePath + blankMdbFileName); //OutputStream out = new FileOutputStream(savedMdbFilePathAndName); OutputStream out = new FileOutputStream(savePath + fileName); byte[] buffer = new byte[1024]; int numRead; while ((numRead = is.read(buffer)) != -1) { out.write(buffer, 0, numRead); } is.close(); out.close(); }
/** *
* Description: 将空白mdb文件拷贝到特定目录http://www.javalearns.com/ *
*/ public void copyBlankMdbFile() throws Exception { InputStream is = this.getClass().getClassLoader().getResourceAsStream( blankMdbFilePath + blankMdbFileName); OutputStream out = new FileOutputStream(savedMdbFilePathAndName); byte[] buffer = new byte[1024]; int numRead; while ((numRead = is.read(buffer)) != -1) { out.write(buffer, 0, numRead); } is.close(); out.close(); } /** *
* Description: 打开对mdb文件的jdbc-odbc连接 *
*/ public void connetAccessDB(String path, String fileName) throws Exception { String savedMdbFilePathAndName = path + fileName; Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String database = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=" + savedMdbFilePathAndName.trim() + ";DriverID=22;READOnLY=true}"; cOnnection= DriverManager.getConnection(database, "", ""); statement = connection.createStatement(); } /** *
* Description: 打开对mdb文件的jdbc-odbc连接 *
*/ public void connetAccessDB() throws Exception { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); String database = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=" + savedMdbFilePathAndName.trim() + ";DriverID=22;READOnLY=true}"; cOnnection= DriverManager.getConnection(database, "", ""); statement = connection.createStatement(); }
/** *
* Description: 执行特定sql语句http://www.javalearns.com/ *
*/ public void executeSql(String sql) throws Exception { statement.execute(sql); }
/** *
* Description: 关闭连接 *
*/ public void closeConnection() throws Exception { if(statement != null) statement.close(); if(connection != null) connection.close(); }
public static void main(String[] args) { AccessUtil au = AccessUtil.getInstance(); //String sql = "Create Table main ( ID integer, title string, image_ID integer,href_ID integer,text_ID integer,audio_ID integer,dv_ID integer ); "; //String sql = "create table Archives_tbl (LLR MEMO,LLRQ MEMO,QZH MEMO,MLH MEMO,AJH MEMO,DH MEMO,BGJH MEMO,FLJH MEMO,MJ MEMO,AJBT MEMO,ND MEMO,DW MEMO,JS MEMO,YC MEMO,BGQX MEMO,QSRQ MEMO,JZRQ MEMO,BZ MEMO);"; String sql1 = "create table Archives_tbl (QZH MEMO,MLH MEMO,AJH MEMO,DH MEMO,BGJH MEMO,FLJH MEMO,MJ MEMO,AJBT MEMO,ND MEMO,DW MEMO,JS MEMO,YS MEMO,BGQX MEMO,QSRQ MEMO,JZRQ MEMO,BZ MEMO);"; String sql2 = "create table Files_tb1 (SXH MEMO,WH MEMO,TM MEMO,ZRZ MEMO,ZTC MEMO,RQ MEMO,YC MEMO,YS MEMO,MJ MEMO,LDPSR MEMO,GB MEMO,QTZT MEMO,BZ MEMO,DH MEMO,Vpath MEMO);"; try { au.copyBlankMdbFile(); au.connetAccessDB(); au.executeSql(sql1); au.executeSql(sql2); au.closeConnection(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }
public void setSoftPath(String softPath) { this.softPath = softPath; }
public void setSoftAccessPath(String softAccessPath) { this.softAccessPath = softAccessPath; }
}