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;
}
/**
* <p>
* Description: 设置待保存的新的mdb文件路径和名
* </p>
*/
public void setSavedFilePathAndName(String newFilePathAndName) {
this.savedMdbFilePathAndName = newFilePathAndName;
}
/**
* <p>
* Description: 删除已经存在的mdb文件
* </p>
*/
public void deleteOldMdbFile() throws Exception {
File oldTargetFile = new File(savedMdbFilePathAndName);
if (oldTargetFile.exists()) {
oldTargetFile.delete();
}
}
/**
* <p>
* Description: 将空白mdb文件拷贝到特定目录
* </p>
*/
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();
}
/**
* <p>
* Description: 将空白mdb文件拷贝到特定目录 http://www.javalearns.com/
* </p>
*/
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();
}
/**
* <p>
* Description: 打开对mdb文件的jdbc-odbc连接
* </p>
*/
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();
}
/**
* <p>
* Description: 打开对mdb文件的jdbc-odbc连接
* </p>
*/
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();
}
/**
* <p>
* Description: 执行特定sql语句 http://www.javalearns.com/
* </p>
*/
public void executeSql(String sql) throws Exception {
statement.execute(sql);
}
/**
* <p>
* Description: 关闭连接
* </p>
*/
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;
}
}
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