利用poi读写excel和word

package poi.xls;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileInputStream;

/**
 * 利用POI实现从excel中读取内容
 */
public class XLSReader {
	
	public static String fileToRead = "c:/test.xls";

	public static void main(String args[]) throws Exception{
			// 创建对Excel工作簿文件的引用
			HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileToRead));

			//HSSFSheet sheet = workbook.getSheet("第一页");
			HSSFSheet sheet = workbook.getSheetAt(0);
			
			//读取指定索引行的值
			HSSFRow row = sheet.getRow(1);
			//读取指定索引格的值
			HSSFCell id = row.getCell((short) 0);
			HSSFCell name = row.getCell((short) 1);
			HSSFCell password = row.getCell((short) 2);
			
			//读出数据
			System.out.println("id： " + id.getNumericCellValue());
			System.out.println("name:  " + name.getRichStringCellValue());
			System.out.println("password:  " + password.getRichStringCellValue());
	}
}

package poi.xls;

import java.io.FileOutputStream;

import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;

/**
 * 利用POI实现向excel中写入内容
 */
public class XLSWriter {
	
	public static String fileToWrite = "c:/test.xls";
	
	public static void main(String[] args) throws Exception {

		// 创建新的Excel 工作簿
		HSSFWorkbook workbook = new HSSFWorkbook();

		// 在Excel工作簿中建一工作表，其名为缺省值
		HSSFSheet sheet = workbook.createSheet("第一页");
		//HSSFSheet sheet = workbook.createSheet();

		// 在指定的索引处创建一行
		HSSFRow row = sheet.createRow((short) 0);

		//在指定索引处创建单元格
		HSSFCell id = row.createCell((short) 0);
		// 定义单元格为字符串类型
		id.setCellType(HSSFCell.CELL_TYPE_NUMERIC);
		// 在单元格中输入一些内容,HSSFRichTextString可以解决乱码问题
		HSSFRichTextString idContent = new HSSFRichTextString("用户id号");
		id.setCellValue(idContent);

		HSSFCell name = row.createCell((short) 1);
		name.setCellType(HSSFCell.CELL_TYPE_STRING);
		HSSFRichTextString nameContent = new HSSFRichTextString("用户名");
		name.setCellValue(nameContent);

		HSSFCell password = row.createCell((short) 2);
		password.setCellType(HSSFCell.CELL_TYPE_STRING);
		HSSFRichTextString passwordContent = new HSSFRichTextString("用户密码");
		password.setCellValue(passwordContent);

		// 新建一输出文件流
		FileOutputStream out = new FileOutputStream(fileToWrite);
		// 把相应的Excel 工作簿存盘
		workbook.write(out);
		out.flush();
		// 操作结束，关闭文件
		out.close();

		System.out.println("文件生成..." + fileToWrite);
	}
}

package poi.doc;

/**
 * 利用POI实现从word中读取内容
 */
import java.io.FileInputStream;

import org.apache.poi.hwpf.extractor.WordExtractor;

public class DOCReader {
	
	public static String fileToRead = "c:/test.doc";
	
	public static void main(String[] args) throws Exception{
			// 创建输入流读取DOC文件
			FileInputStream in = new FileInputStream(fileToRead);
			
			// 创建WordExtractor
			WordExtractor extractor = new WordExtractor(in);
			
			// 对DOC文件进行提取
			String text = extractor.getText();

			System.out.println(text);
	}

}

package poi.doc;

import java.io.ByteArrayInputStream;
import java.io.FileOutputStream;

import org.apache.poi.poifs.filesystem.POIFSFileSystem;

/**
 * 利用POI实现向word写入内容
 */
public class DOCWriter {

	public static String fileToWrite = "c:/test.doc";

	public static void main(String[] args) throws Exception{
		String content = "测试数据,将被写入文档";
		
		byte b[] = content.getBytes();

		ByteArrayInputStream bais = new ByteArrayInputStream(b);

		POIFSFileSystem fs = new POIFSFileSystem();
		
		FileOutputStream ostream = new FileOutputStream(fileToWrite);

		fs.writeFilesystem(ostream);

		bais.close();
		
		ostream.close();

	}
}