标签：excel java
JAVA EXCEL API:是一开放源码项目，通过它Java开发人员可以读取Excel文件的内容、创建新的Excel文件、更新已经存在的Excel文件。使用该API非Windows操作系统也可以通过纯Java应用来处理Excel数据表。因为它是使用Java编写的，所以我们在Web应用中可以通过JSP、Servlet来调用API实现对Excel数据表的访问。
下载：
官方网站 http://www.andykhan.com/jexcelapi/ 下载最新版本（本人下的是jexcelapi_2_6_12.tar.gz，解压后将里面的jxl.jar复制到WEB-INF/lib目录下面即可）
Java Excel API的jar包可以通过以下URL获得：
http://sourceforge.net/projects/jexcelapi/files/jexcelapi/2.6.6/jexcelapi_2_6_6.zip/download
（包括所有版本）：http://sourceforge.net/projects/jexcelapi/files/
直接下载地址（迅雷上新建任务即可）：
http://nchc.dl.sourceforge.net/project/jexcelapi/jexcelapi/2.6.6/jexcelapi_2_6_6.zip
一、JSP生成简单的Excel文件
package beans.excel;
import java.io.IOException;
import java.io.OutputStream;
import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
public class SimpleExcelWrite {
public void createExcel(OutputStream os) throws WriteException,IOException{
//创建工作薄
WritableWorkbook workbook = Workbook.createWorkbook(os);
//创建新的一页
WritableSheet sheet = workbook.createSheet("First Sheet",0);
//创建要显示的内容,创建一个单元格，第一个参数为列坐标，第二个参数为行坐标，第三个参数为内容
Label xuexiao = new Label(0,0,"学校");
sheet.addCell(xuexiao);
Label zhuanye = new Label(1,0,"专业");
sheet.addCell(zhuanye);
Label jingzhengli = new Label(2,0,"专业竞争力");
sheet.addCell(jingzhengli);
Label qinghua = new Label(0,1,"清华大学");
sheet.addCell(qinghua);
Label jisuanji = new Label(1,1,"计算机专业");
sheet.addCell(jisuanji);
Label gao = new Label(2,1,"高");
sheet.addCell(gao);
Label beida = new Label(0,2,"北京大学");
sheet.addCell(beida);
Label falv = new Label(1,2,"法律专业");
sheet.addCell(falv);
Label zhong = new Label(2,2,"中");
sheet.addCell(zhong);
Label ligong = new Label(0,3,"北京理工大学");
sheet.addCell(ligong);
Label hangkong = new Label(1,3,"航空专业");
sheet.addCell(hangkong);
Label di = new Label(2,3,"低");
sheet.addCell(di);
//把创建的内容写入到输出流中，并关闭输出流
workbook.write();
workbook.close();
os.close();
}
}二、生成复杂数据格式Excel文件
package beans.excel;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Calendar;
import java.util.Date;
import jxl.Workbook;
import jxl.write.Boolean;
import jxl.write.DateFormats;
import jxl.write.DateTime;
import jxl.write.Label;
import jxl.write.Number;
import jxl.write.WritableCellFormat;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
public class ComplexDataExcelWrite {
public void createExcel(OutputStream os) throws WriteException,IOException {
//创建工作薄
WritableWorkbook workbook = Workbook.createWorkbook(os);
//创建新的一页
WritableSheet sheet = workbook.createSheet("First Sheet", 0);
//创建要显示的具体内容
Label formate = new Label(0,0,"数据格式");
sheet.addCell(formate);
Label floats = new Label(1,0,"浮点型");
sheet.addCell(floats);
Label integers = new Label(2,0,"整型");
sheet.addCell(integers);
Label booleans = new Label(3,0,"布尔型");
sheet.addCell(booleans);
Label dates = new Label(4,0,"日期格式");
sheet.addCell(dates);
Label example = new Label(0,1,"数据示例");
sheet.addCell(example);
//浮点数据
Number number = new Number(1,1,3.1415926535);
sheet.addCell(number);
//整形数据
Number ints = new Number(2,1,15042699);
sheet.addCell(ints);
Boolean bools = new Boolean(3,1,true);
sheet.addCell(bools);
//日期型数据
Calendar c = Calendar.getInstance();
Date date = c.getTime();
WritableCellFormat cf1 = new WritableCellFormat(DateFormats.FORMAT1);
DateTime dt = new DateTime(4,1,date,cf1);
sheet.addCell(dt);
//把创建的内容写入到输出流中，并关闭输出流
workbook.write();
workbook.close();
os.close();
}
}三、生成复杂布局和样式的Excel文件
package beans.excel;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Calendar;
import java.util.Date;
import jxl.Workbook;
import jxl.format.Colour;
import jxl.format.UnderlineStyle;
import jxl.write.Boolean;
import jxl.write.DateFormats;
import jxl.write.DateTime;
import jxl.write.Label;
import jxl.write.Number;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
public class MutiStyleExcelWrite {
public void createExcel(OutputStream os) throws WriteException,IOException {
//创建工作薄
WritableWorkbook workbook = Workbook.createWorkbook(os);
//创建新的一页
WritableSheet sheet = workbook.createSheet("First Sheet", 0);
//构造表头
sheet.mergeCells(0, 0, 4, 0);//添加合并单元格，第一个参数是起始列，第二个参数是起始行，第三个参数是终止列，第四个参数是终止行
WritableFont bold = new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD);//设置字体种类和黑体显示,字体为Arial,字号大小为10,采用黑体显示
WritableCellFormat titleFormate = new WritableCellFormat(bold);//生成一个单元格样式控制对象
titleFormate.setAlignment(jxl.format.Alignment.CENTRE);//单元格中的内容水平方向居中
titleFormate.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);//单元格的内容垂直方向居中
Label title = new Label(0,0,"JExcelApi支持数据类型详细说明",titleFormate);
sheet.setRowView(0, 600, false);//设置第一行的高度
sheet.addCell(title);
//创建要显示的具体内容
WritableFont color = new WritableFont(WritableFont.ARIAL);//选择字体
color.setColour(Colour.GOLD);//设置字体颜色为金***
WritableCellFormat colorFormat = new WritableCellFormat(color);
Label formate = new Label(0,1,"数据格式",colorFormat);
sheet.addCell(formate);
Label floats = new Label(1,1,"浮点型");
sheet.addCell(floats);
Label integers = new Label(2,1,"整型");
sheet.addCell(integers);
Label booleans = new Label(3,1,"布尔型");
sheet.addCell(booleans);
Label dates = new Label(4,1,"日期格式");
sheet.addCell(dates);
Label example = new Label(0,2,"数据示例",colorFormat);
sheet.addCell(example);
//浮点数据
//设置下划线
WritableFont underline= new WritableFont(WritableFont.ARIAL,WritableFont.DEFAULT_POINT_SIZE,WritableFont.NO_BOLD,false,UnderlineStyle.SINGLE);
WritableCellFormat greyBackground = new WritableCellFormat(underline);
greyBackground.setBackground(Colour.GRAY_25);//设置背景颜色为灰色
Number number = new Number(1,2,3.1415926535,greyBackground);
sheet.addCell(number);
//整形数据
WritableFont boldNumber = new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD);//黑体
WritableCellFormat boldNumberFormate = new WritableCellFormat(boldNumber);
Number ints = new Number(2,2,15042699,boldNumberFormate);
sheet.addCell(ints);
//布尔型数据
Boolean bools = new Boolean(3,2,true);
sheet.addCell(bools);
//日期型数据
//设置黑体和下划线
WritableFont boldDate = new WritableFont(WritableFont.ARIAL,WritableFont.DEFAULT_POINT_SIZE,WritableFont.BOLD,false,UnderlineStyle.SINGLE);
WritableCellFormat boldDateFormate = new WritableCellFormat(boldDate,DateFormats.FORMAT1);
Calendar c = Calendar.getInstance();
Date date = c.getTime();
DateTime dt = new DateTime(4,2,date,boldDateFormate);
sheet.addCell(dt);
//把创建的内容写入到输出流中，并关闭输出流
workbook.write();
workbook.close();
os.close();
}
}四、读取Excel报表
Java通过jexcelapi包操作excel文件：
//in ExcelOperater
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import jxl.Cell;
import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.write.Label;
public class ExcelOperater
{
public static void main(String[] args)
{
jxl.Workbook readwb = null;
try
{
//构建Workbook对象, 只读Workbook对象
//直接从本地文件创建Workbook
InputStream instream = new FileInputStream("F:/红楼人物.xls");
readwb = Workbook.getWorkbook(instream);
//Sheet的下标是从0开始
//获取第一张Sheet表
Sheet readsheet = readwb.getSheet(0);
//获取Sheet表中所包含的总列数
int rsColumns = readsheet.getColumns();
//获取Sheet表中所包含的总行数
int rsRows = readsheet.getRows();
//获取指定单元格的对象引用
for (int i = 0; i < rsRows; i++)
{
for (int j = 0; j < rsColumns; j++)
{
Cell cell = readsheet.getCell(j, i);
System.out.print(cell.getContents() + " ");
}
System.out.println();
}
//利用已经创建的Excel工作薄,创建新的可写入的Excel工作薄
jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File(
"F:/红楼人物1.xls"), readwb);
//读取第一张工作表
jxl.write.WritableSheet ws = wwb.getSheet(0);
//获得第一个单元格对象
jxl.write.WritableCell wc = ws.getWritableCell(0, 0);
//判断单元格的类型, 做出相应的转化
if (wc.getType() == CellType.LABEL)
{
Label l = (Label) wc;
l.setString("新姓名");
}
//写入Excel对象
wwb.write();
wwb.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
readwb.close();
}
}
}修改输出文件 F:\红楼人物3.xls （加修饰后输出）
//in ExcelHandle
import jxl.*;
import jxl.format.UnderlineStyle;
import jxl.write.*;
import jxl.write.Number;
import jxl.write.Boolean;
import jxl.Cell;
import java.io.*;
public class ExcelHandle
{
public ExcelHandle()
{
}
/***读取Excel*/
public static void readExcel(String filePath)
{
try
{
InputStream is = new FileInputStream(filePath);
Workbook rwb = Workbook.getWorkbook(is);
//这里有两种方法获取sheet表:名字和下标（从0开始）
//Sheet st = rwb.getSheet("original");
Sheet st = rwb.getSheet(0);
/**
//获得第一行第一列单元的值
Cell c00 = st.getCell(0,0);
//通用的获取cell值的方式,返回字符串
String strc00 = c00.getContents();
//获得cell具体类型值的方式
if(c00.getType() == CellType.LABEL)
{
LabelCell labelc00 = (LabelCell)c00;
strc00 = labelc00.getString();
}
//输出
System.out.println(strc00);*/
//Sheet的下标是从0开始
//获取第一张Sheet表
Sheet rst = rwb.getSheet(0);
//获取Sheet表中所包含的总列数
int rsColumns = rst.getColumns();
//获取Sheet表中所包含的总行数
int rsRows = rst.getRows();
//获取指定单元格的对象引用
for (int i = 0; i < rsRows; i++)
{
for (int j = 0; j < rsColumns; j++)
{
Cell cell = rst.getCell(j, i);
System.out.print(cell.getContents() + " ");
}
System.out.println();
}
//关闭
rwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
/**输出Excel*/
public static void writeExcel(OutputStream os)
{
try
{
/** 只能通过API提供的 工厂方法来创建Workbook，而不能使用WritableWorkbook的构造函数，因为类WritableWorkbook的构造函数为 protected类型：方法一：直接从目标文件中读取 WritableWorkbook wwb = Workbook.createWorkbook(new File(targetfile));方法 二：如下实例所示 将WritableWorkbook直接写入到输出流*/
WritableWorkbook wwb = Workbook.createWorkbook(os);
//创建Excel工作表 指定名称和位置
WritableSheet ws = wwb.createSheet("Test Sheet 1",0);
/**************往工作表中添加数据*****************/
//1.添加Label对象
Label label = new Label(0,0,"测试");
ws.addCell(label);
//添加带有字型Formatting对象
WritableFont wf = new WritableFont(WritableFont.TIMES,18,WritableFont.BOLD,true);
WritableCellFormat wcf = new WritableCellFormat(wf);
Label labelcf = new Label(1,0,"this is a label test",wcf);
ws.addCell(labelcf);
//添加带有字体颜色的Formatting对象
WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,
UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.DARK_YELLOW);
WritableCellFormat wcfFC = new WritableCellFormat(wfc);
Label labelCF = new Label(1,0,"Ok",wcfFC);
ws.addCell(labelCF);
//2.添加Number对象
Number labelN = new Number(0,1,3.1415926);
ws.addCell(labelN);
//添加带有formatting的Number对象
NumberFormat nf = new NumberFormat("#.##");
WritableCellFormat wcfN = new WritableCellFormat(nf);
Number labelNF = new jxl.write.Number(1,1,3.1415926,wcfN);
ws.addCell(labelNF);
//3.添加Boolean对象
Boolean labelB = new jxl.write.Boolean(0,2,true);
ws.addCell(labelB);
Boolean labelB1 = new jxl.write.Boolean(1,2,false);
ws.addCell(labelB1);
//4.添加DateTime对象
jxl.write.DateTime labelDT = new jxl.write.DateTime(0,3,new java.util.Date());
ws.addCell(labelDT);
//5.添加带有formatting的DateFormat对象
DateFormat df = new DateFormat("dd MM yyyy hh:mm:ss");
WritableCellFormat wcfDF = new WritableCellFormat(df);
DateTime labelDTF = new DateTime(1,3,new java.util.Date(),wcfDF);
ws.addCell(labelDTF);
//6.添加图片对象,jxl只支持png格式图片
File image = new File("f:\\1.png");
WritableImage wimage = new WritableImage(0,4,6,17,image);
ws.addImage(wimage);
//7.写入工作表
wwb.write();
wwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
/** 将file1拷贝后,进行修改并创建输出对象file2
* 单元格原有的格式化修饰不能去掉，但仍可将新的单元格修饰加上去，
* 以使单元格的内容以不同的形式表现
*/
public static void modifyExcel(File file1,File file2)
{
try
{
Workbook rwb = Workbook.getWorkbook(file1);
WritableWorkbook wwb = Workbook.createWorkbook(file2,rwb);//copy
WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,
UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.BLUE);
WritableCellFormat wcfFC = new WritableCellFormat(wfc);
WritableSheet ws = wwb.getSheet(0);
WritableCell wc = ws.getWritableCell(0,0);
//判断单元格的类型,做出相应的转换
if(wc.getType() == CellType.LABEL)
{
Label labelCF =new Label(0,0,"人物（新）",wcfFC);
ws.addCell(labelCF);
//Label label = (Label)wc;
//label.setString("被修改");
}
wwb.write();
wwb.close();
rwb.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
//测试
public static void main(String args[])
{
try
{
//读EXCEL
ExcelHandle.readExcel("F:/红楼人物.xls");
//输出EXCEL
File filewrite=new File("F:/红楼人物2.xls");
filewrite.createNewFile();
OutputStream os=new FileOutputStream(filewrite);
ExcelHandle.writeExcel(os);
//修改EXCEL
ExcelHandle.modifyExcel(new File("F:/红楼人物.xls"), new File("F:/红楼人物3.xls"));
}
catch(Exception e)
{
e.printStackTrace();
}
}
}本文出自 “zens” 博客，请务必保留此出处http://334695909.blog.51cto.com/10096445/1694954
标签：excel java
原文地址：http://334695909.blog.51cto.com/10096445/1694954
