软件下载 | 资讯教程 | 最近更新 | 下载排行 | 一键转帖 | 发布投稿
您的位置:最火下载站 > 电脑教程 > 编程开发 > Java开发 > java实现导出Excel文件代码

java实现导出Excel文件代码

excel工具类

package com.ohd.ie.product.action;

import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import org.apache.commons.io.output.ByteArrayOutputStream;

import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.VerticalAlignment;
import jxl.write.*;
import jxl.write.Number;
import jxl.write.biff.RowsExceededException;

public class Excel {
private OutputStream os;
private WritableWorkbook wwb = null;
private WritableSheet ws = null;
private WritableCellFormat titleCellFormat = null;
private WritableCellFormat noBorderCellFormat = null;
private WritableCellFormat hasBorderCellFormat = null;
private WritableCellFormat hasBorderCellNumberFormat = null;
private WritableCellFormat hasBorderCellNumberFormat2 = null;
private WritableImage writableImage=null;
private int r;

public Excel(OutputStream os){
this.os = os;
r = -1;
try {
wwb = Workbook.createWorkbook(os);
//创建工作表
ws = wwb.createSheet("sheet1",0);

//设置表头字体,大小,加粗
titleCellFormat = new WritableCellFormat();
titleCellFormat.setAlignment(Alignment.CENTRE);
titleCellFormat.setVerticalAlignment(VerticalAlignment.CENTRE);
//自动换行
titleCellFormat.setWrap(true);
titleCellFormat.setFont(new WritableFont(WritableFont.createFont("宋体"),12,WritableFont.BOLD));
titleCellFormat.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN);

//设置表格字体,大小----无边框
noBorderCellFormat = new WritableCellFormat();
noBorderCellFormat.setAlignment(Alignment.CENTRE);
noBorderCellFormat.setVerticalAlignment(VerticalAlignment.CENTRE);
noBorderCellFormat.setFont(new WritableFont(WritableFont.createFont("宋体"),12));

//设置表格字体,大小----有边框
hasBorderCellFormat = new WritableCellFormat();
hasBorderCellFormat.setAlignment(Alignment.CENTRE);
hasBorderCellFormat.setVerticalAlignment(VerticalAlignment.CENTRE);
hasBorderCellFormat.setFont(new WritableFont(WritableFont.createFont("宋体"),12));
hasBorderCellFormat.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN);

//设置表格字体,大小----有边框(小数)
NumberFormat nf = new NumberFormat("#0.00");
hasBorderCellNumberFormat = new WritableCellFormat(nf);
hasBorderCellNumberFormat.setAlignment(Alignment.CENTRE);
hasBorderCellNumberFormat.setVerticalAlignment(VerticalAlignment.CENTRE);
hasBorderCellNumberFormat.setFont(new WritableFont(WritableFont.createFont("宋体"),12));
hasBorderCellNumberFormat.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN);


//设置表格字体,大小----有边框(整数)
NumberFormat nf2 = new NumberFormat("#0");
hasBorderCellNumberFormat2 = new WritableCellFormat(nf2);
hasBorderCellNumberFormat2.setAlignment(Alignment.CENTRE);
hasBorderCellNumberFormat2.setVerticalAlignment(VerticalAlignment.CENTRE);
hasBorderCellNumberFormat2.setFont(new WritableFont(WritableFont.createFont("宋体"),12));
hasBorderCellNumberFormat2.setBorder(jxl.format.Border.ALL, jxl.format.BorderLineStyle.THIN);



} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
*
* @param content 内容
* @param c 列
* @param style 样式
* @param isNewLine 是否换行
* @param mergeType 合并类型
* @param mergeCount 合并个数
* @param width 单元格宽
*/
public void setExcelCell(String content,int c,int style,boolean isNewLine,int mergeType,int mergeCount,int width){
try {
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////报表内容////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

if(isNewLine){
r++;
}

WritableCell l = null;
if(style == 1){
l = new Label(c,r,content,titleCellFormat);
}
else if(style == 2){
l = new Label(c,r,content,noBorderCellFormat);
}
else if(style == 3){
l = new Label(c,r,content,hasBorderCellFormat);
}
else if(style == 4){
l = new Number(c,r,Double.parseDouble(content),hasBorderCellNumberFormat);
}
else if(style == 5){
l = new Number(c,r,Integer.parseInt(content),hasBorderCellNumberFormat2);
}
ws.addCell(l);
if(width != 0){
ws.setColumnView(c,width);
}
//veryhuo,com
if(mergeType == 1){
//x 轴方向
ws.mergeCells(c, r, c+mergeCount-1 , r);
}
else if(mergeType == 2){
//y 轴方向
ws.mergeCells(c, r, c, r+mergeCount-1);
}

if(isNewLine){
ws.setRowView(r, 350);
if(style == 1 && r != 0){
ws.setRowView(r, 900);
}
else{
ws.setRowView(r, 350);
}
}

//
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
} catch (Exception e) {
System.out.println(e.toString());
}
}

public void setExcelCellEx(String content,int c,int style,boolean isNewLine,int mergeType,int mergeCount,int width,int row){
try {
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////报表内容////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////

if(isNewLine){
r++;
}

WritableCell l = null;
if(style == 1){
l = new Label(c,r,content,titleCellFormat);
}
else if(style == 2){
l = new Label(c,r,content,noBorderCellFormat);
}
else if(style == 3){

if(content.indexOf(".jpg")!=-1 ||content.indexOf(".JPG")!=-1){
File outputFile=null;
File imgFile =new File(content);
if(imgFile.exists()&&imgFile.length()>0){
BufferedImage input=null;
try {
input = ImageIO.read(imgFile);
} catch (Exception e) {
e.printStackTrace();
}
if(input!=null){
String path=imgFile.getAbsolutePath();
outputFile = new File(path.substring(0,path.lastIndexOf('.')+1)+"png");
ImageIO.write(input, "PNG", outputFile);
if(outputFile.exists()&&outputFile.length()>0){
ws.setRowView(row,2000);
//ws.setColumnView(8, 10);
writableImage = new WritableImage(c+0.1, row+0.1, 0.8, 0.8, outputFile);
ws.addImage(writableImage);

l = new Label(c,r,"",hasBorderCellFormat);
}
}
}
}else{
l = new Label(c,r,content,hasBorderCellFormat);
}


}
else if(style == 4){
l = new Number(c,r,Double.parseDouble(content),hasBorderCellNumberFormat);
}
else if(style == 5){
l = new Number(c,r,Integer.parseInt(content),hasBorderCellNumberFormat2);
}
ws.addCell(l);
if(width != 0){
ws.setColumnView(c,width);
}

if(mergeType == 1){
//x 轴方向
ws.mergeCells(c, r, c+mergeCount-1 , r);
}
else if(mergeType == 2){
//y 轴方向
ws.mergeCells(c, r, c, r+mergeCount-1);
}

if(isNewLine){
ws.setRowView(r, 350);
if(style == 1 && r != 0){
ws.setRowView(r, 900);
}
else{
ws.setRowView(r, 350);
}
}

} catch (Exception e) {
System.out.println(e.toString());
}
}

public void setRowHeight(int val){
try {
ws.setRowView(r, val);
} catch (RowsExceededException e) {
e.printStackTrace();
}
}

public void getExcelResult(){
try {
wwb.write();
} catch (Exception e) {
System.out.println(e.toString());
}
finally{
if(wwb != null){
try {
wwb.close();
if(os != null){
os.close();
}
} catch (WriteException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}


需要的jar包:jxl.jar
// Downloads By http://www.veryhuo.com
具体操作:
选择要导出数据的类
public ActionForward doExport(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)throws Exception {
response.setContentType("application/vnd.ms-excel");
response.addHeader("Content-Disposition","attachment;filename=" + "GemStorageList.xls");//文件导出的位置及名称
Excel excel = new Excel(response.getOutputStream());//实例Excel工具类
List<Users> glist = Users集合的方法。 //集合方法。
excel.setExcelCell("名称" , 0, 3, true, 0, 0, 10);
excel.setExcelCell("密码" , 1, 3, false, 0, 0, 10);
excel.setExcelCell("地址", 2, 3, false, 0, 0, 10);

for(Users g : glist)
{
excel.setExcelCell(g.getName() , 0, 3, true, 0, 0, 10);
excel.setExcelCell(g.getPassword() , 1, 3, false, 0, 0, 10);
excel.setExcelCell(g.getAddress()+"", 2, 3, false, 0, 0, 10);

}
excel.getExcelResult();
return null;
}

页面关键代码:
<input type="button" value="导出列表" onclick="location='actionname.do?param=doExport'" />

    相关阅读
    网友评论