PowerPoint操作

package newexam;

import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;

public class AccessPPtFile {
	static String fileName = "d:/tiku/汇总.mdb";
	static int NUM = 1;
	static File outDir = new File("d:/cf");
	static File absoluteDir = new File(outDir, "/PPtOperation");
	static Connection con = null;

	// 类静态方法，完成对数据库连接等初始化工作
	static {
		if (!absoluteDir.exists()) {
			System.out.println("正在创建文件夹");
			absoluteDir.mkdirs();
		}
	}

	/**
	 * 从数据库中读取PowerPoint文件（10个），放入指定的文件夹中，文件名在数据库中已经指定
	 */
	public static void getPPtFile() throws Exception {
		DAOAccess dao = new DAOAccess(fileName);
		con = dao.getConnection();
		Statement stat = con.createStatement();
		for (int m = 1; m <= NUM; m++) {
			String sql = "select * from PowerpointFile" + m;
			ResultSet res = stat.executeQuery(sql);
			while (res.next()) {
				BufferedOutputStream out = new BufferedOutputStream(
						new FileOutputStream(new File(absoluteDir,
								res.getString(2))));
				InputStream in = res.getBinaryStream(3);
				int ch;
				while ((ch = in.read()) != -1) {
					out.write(ch);
				}
				in.close();
				out.close();
			}
		}
		stat.close();
		dao.close();
		System.out.println("PowerPoint操作文件创建成功，请检查文件正确性！");
	}

	public static void getPPtOperation() throws Exception {
		DAOAccess dao = new DAOAccess(fileName);
		con = dao.getConnection();
		Statement stat = con.createStatement();
		BufferedWriter out = new BufferedWriter(new FileWriter(new File(
				absoluteDir, "PPtOperation.txt")));
		for (int m = 1; m <= NUM; m++) {
			String sql = "select * from PowerPointOperation" + m;
			ResultSet res = stat.executeQuery(sql);
			int i = 1;
			while (res.next()) {
				if (i == 1) {
					// 文件名前面7个字符是编号，所以用substring(7)消除
					out.write("文件名：" + res.getString(3).substring(7));
					out.newLine();
				}
				out.write("" + i + "." + res.getString(2));
				out.newLine();
				i++;
			}
			out.newLine();
			out.newLine();
		}
		stat.close();
		out.close();
		dao.close();
		System.out.println("PowerPoint题干文件创建成功，请检查文件正确性!");
	}

	public static void main(String args[]) throws Exception {
		getPPtFile();
		getPPtOperation();
	}
}