Java——jxl操做Excel

Java——jxl操做Excel

 

須要利用的jar包：jxl-2.6.12.jar

http://pan.baidu.com/s/1o7KtxUi

一、讀取xls文件

package test;

import java.io.File;
import java.io.IOException;

import jxl.Sheet;
import jxl.Workbook;
import jxl.read.biff.BiffException;

public class ReadExcel {
	// 寫入excel
	public static void main(String[] args) {
		try {
			Workbook book = Workbook.getWorkbook(new File("d:\\測試.xls"));
			// 得到第一個sheet對象
			Sheet sheet0 = book.getSheet(0);
			// 獲取總行、列數
			int rows = sheet0.getRows();
			int cols = sheet0.getColumns();
			System.out.println("行：" + rows);
			System.out.println("列：" + cols);
			// 循環讀取數據
			for (int i = 0; i < rows; i++) {
				for (int j = 0; j < cols; j++) {
					System.out.print(sheet0.getCell(j, i).getContents()+" ");
				}
				System.out.println();
			}
		} catch (BiffException | IOException e) {
			e.printStackTrace();
		}
	}

}

二、寫入xls文件

package test;

import java.io.File;
import java.io.IOException;

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;

public class WriteExcel {
	//寫入excel
	public static void main(String[] args) {
		try {
			// 建立jxl操做對象
			WritableWorkbook book = Workbook.createWorkbook(new File("d:\\測試.xls"));
			// 建立sheet(name、num)
			WritableSheet sheet0 = book.createSheet("sheet0", 0);
			// 建立表格(row、col、value)
			//行
			for (int i = 0; i < 10; i++) {
				//列
				for (int j = 0; j < 10; j++) {
					Label label = new Label(j, i, "第"+(i+1)+"行");
					// 將表格添加到sheet
					sheet0.addCell(label);
				}
			}
			// 寫入數據
			book.write();
			// 關閉流
			book.close();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (RowsExceededException e) {
			e.printStackTrace();
		} catch (WriteException e) {
			e.printStackTrace();
		}

	}
}

三、修改xls文件

package test;

import java.io.File;

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;

public class ModifyExcel {
	public static void main(String[] args) {
		try {
			// 獲取excel文件
			Workbook wb = Workbook.getWorkbook(new File("d:\\測試.xls"));
			// 生成副本
			WritableWorkbook book = Workbook.createWorkbook(new File("d:\\測試.xls"), wb);
			// 例如——添加一個工做表
			WritableSheet  sheet1 = book.createSheet("sheet1", 1);
			// 建立表格
			for (int i = 0; i < 5; i++) {
				for (int j = 0; j < 10; j++) {
					Label label = new Label(j, i, "第" + i + "行");
					//添加表格到sheet
					sheet1.addCell(label);
				}
			}
			// 寫入
			book.write();
			// 關閉流
			book.close();
		} catch (Exception e) {
			e.printStackTrace();
		}

	}
}