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不管是xml的导入和导出还是Excel的导入和导出，对应的无非都是文件的解析和下载，下面来讲解的主要是导出（下载）1.给form定义一个id，通过jquery获取对应的form表单的数据2.通过jquery中的一个attr("属性",属性值)给action属性赋值，同理，即可以对method属性赋值3.通过jquery的一个submit()方法提交
$(function(){
$('#exportId').bind('click', function(){
$.messager.confirm('您正在操作导出poi','您确定继续执行该操作吗？',function(r){
if(r){
$("#userInfoId").attr("action","<%=request.getContextPath()%>/user/exportUser.action");
$("#userInfoId").submit();
}else{
$.messager.alert('提示','您取消了该操作！')
}
})
});
}); function poiExcel_() {
$.messager.confirm("提示","确认要下载吗?",function(r){
if(r){
$.messager.alert('提示','下载成功！');
var v_productForm = document.getElementById("esayui_poi_list_id");
v_productForm.action = "<%=request.getContextPath()%>/esayui/poiExcel.jhtml";
v_productForm.submit();
}else {
$.messager.alter('提示','下载失败！');
}
});
}@RequestMapping(value="/downloadXLS",method=RequestMethod.POST)
public void downloadXLS(Product product,HttpServletRequest request,HttpServletResponse response) {
//根据查询条件查询产品表集合
List<Product> productList=productService.findProductList(product);
//根据查询条件查询品牌表集合
List<Brand> brandList=brandService.findBrandList();
//3.创建workbook
HSSFWorkbook workBook =new HSSFWorkbook();
//下载
createExcelPoi(productList,brandList, workBook,request, response);
}创建excelprivate void createExcelPoi(List<Product> productList, List<Brand> brandList, HSSFWorkbook workBook,HttpServletRequest request,HttpServletResponse response) {
for (int i=0;i<brandList.size();i++) {
Brand brand = brandList.get(i);
List<Product> eligibilityBrand = returnStudentList(productList,brand);
if(eligibilityBrand.size()>0) {
//根据workBook创建sheet
HSSFSheet sheet = workBook.createSheet(brand.getBrandName()+"("+eligibilityBrand.size()+"个)");
createTitle(sheet, brand.getBrandName());
//标题头的样式设置
HSSFCellStyle style=buildStyleTitle(workBook, sheet);
//标题头
HSSFCell titleCell = buildTitleLike(brandList,i,sheet);
titleCell.setCellStyle(style);
//根据行创建表头，并赋值
buildHeadRow(sheet,workBook);
//根据行创建表头，并赋值
buildHeadRow(sheet,workBook);
//表头创建后，在表头后创建获值值对应的行列及赋值
for (int j = 0; j < eligibilityBrand.size(); j++) {
Integer id = eligibilityBrand.get(j).getId();
Long totalCount=productService.findBrandCountByProductId(id);
buildMainbody(eligibilityBrand,totalCount,request, workBook, sheet, j);
}
}
}
//导出Excel
SimpleDateFormat sim=new SimpleDateFormat("yyyyMMddhhmmss");
String strDate = sim.format(new Date());
//随机数
RandomStringUtils randomStringUtils=new RandomStringUtils();
//生成指定长度的字母和数字的随机组合字符串
String randomStr = randomStringUtils.randomAlphanumeric(5);
String xlsName= strDate+randomStr+"产品信息表.xls" ;
FileUtil.downloadXLSFile(request, response, workBook, xlsName);
}public static void downloadXLSFile(HttpServletRequest request, HttpServletResponse response, HSSFWorkbook workbook, String fileName) {
OutputStream os = null;
BufferedOutputStream bos = null;
try {
os = response.getOutputStream(); //重点突出(特别注意),通过response获取的输出流，作为服务端往客户端浏览器输出内容的一个通道
bos = new BufferedOutputStream(os);
// 处理下载文件名的乱码问题(根据浏览器的不同进行处理)
if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0) {
fileName = new String(fileName.getBytes("GB2312"),"ISO-8859-1");
} else {
// 对文件名进行编码处理中文问题
fileName = java.net.URLEncoder.encode(fileName, "UTF-8");// 处理中文文件名的问题
fileName = new String(fileName.getBytes("UTF-8"), "GBK");// 处理中文文件名的问题
}
response.reset(); // 重点突出 空白行的出现原因，jsp代码编译后产生。就是有jsp生成html文件的时候，html文件内部会出现很多空白行。下载后的文件内的空白行也是这样产生的。
//因此，需要 response.reset() 来清除首部的空白行
response.setCharacterEncoding("UTF-8"); // 重点突出
response.setContentType("application/x-msdownload");// 不同类型的文件对应不同的MIME类型 // 重点突出
// inline在浏览器中直接显示，不提示用户下载
// attachment弹出对话框，提示用户进行下载保存本地
// 默认为inline方式
response.setHeader("Content-Disposition", "attachment;filename="+ fileName);
// response.setHeader("Content-Disposition", "attachment; filename="+fileName); // 重点突出
workbook.write(bos);
} catch (Exception ex) {
throw new RuntimeException(ex.getMessage());
} finally {
// 特别重要
// 1. 进行关闭是为了释放资源
// 2. 进行关闭会自动执行flush方法清空缓冲区内容
try {
if (null != bos) {
bos.close();
bos = null;
}
if (null != os) {
os.close();
os = null;
}
} catch (Exception ex) {
throw new RuntimeException(ex.getMessage());
}
}
}对应的是创建excel中的循环获取对应的需求条件public List<Product> returnStudentList(List<Product> productList, Brand brand) {
//3.循环品牌集合，产品集合对比，当存在时就定义一个解释集合接收
List eligibilityList=new ArrayList();
for (Product product : productList) {
int id = product.getBrand().getId();
System.out.println(id);
int id2 = brand.getId();
if(id == id2) {
eligibilityList.add(product);
}
}
return eligibilityList;
}对应的是创建excel中的创建表头，根据sheet创建row，根据row创建cellprivate void createTitle(HSSFSheet sheet, String brandName) {
HSSFRow row = sheet.createRow(1);
HSSFRow row_9 = sheet.createRow(3);
HSSFCell titalCell = row.createCell(5);
titalCell.setCellValue(brandName+"列表信息");
}
对应的是创建excel中的标题头的样式设置private HSSFCellStyle buildStyleTitle(HSSFWorkbook workBook, HSSFSheet sheet) {
//设置样式
HSSFCellStyle style = workBook.createCellStyle();
HSSFFont font = workBook.createFont();
font.setFontHeightInPoints((short) 28);//字号
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);//加粗
font.setColor(HSSFColor.BLACK.index);//设置字体颜色
font.setFontName("黑体"); // 将“黑体”字体应用到当前单元格上
style.setFont(font);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//内容左右居中
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//内容上下居中
//背景信息
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
style.setFillForegroundColor(HSSFColor.SKY_BLUE.index);
//合并单元格
sheet.addMergedRegion(new CellRangeAddress(1, 3, 5, 13));
//设置列宽（给时间的单元格的宽度给大点，防止时间显示格式错误！）
sheet.setColumnWidth(5, 20*256);
sheet.setColumnWidth(6, 20*256);
sheet.setColumnWidth(7, 20*256);
sheet.setColumnWidth(8, 20*256);
sheet.setColumnWidth(9, 20*256);
sheet.setColumnWidth(10, 20*256);
sheet.setColumnWidth(11, 20*256);
return style;
}对应的是创建excel中的内容标题头的创建private void buildHeadRow(HSSFSheet sheet,HSSFWorkbook workBook) {
//根据sheet创建行
HSSFRow rowHead = sheet.createRow(4);
//根据row创建cll
HSSFCell idCell = rowHead.createCell(6);
idCell.setCellValue("产品编号");
HSSFCell nameCell = rowHead.createCell(7);
nameCell.setCellValue("产品名称");
HSSFCell priceCell = rowHead.createCell(8);
priceCell.setCellValue("产品价格");
HSSFCell brandCell = rowHead.createCell(9);
brandCell.setCellValue("品牌名");
HSSFCell imgCell = rowHead.createCell(10);
imgCell.setCellValue("产品主图");
HSSFCell pictureNumCell = rowHead.createCell(11);
pictureNumCell.setCellValue("产品子图个数");
HSSFCellStyle fontStyle = bulidFontStyleHead(workBook);
idCell.setCellStyle(fontStyle);
nameCell.setCellStyle(fontStyle);
brandCell.setCellStyle(fontStyle);
imgCell.setCellStyle(fontStyle);
priceCell.setCellStyle(fontStyle);
pictureNumCell.setCellStyle(fontStyle);
}对应的是创建excel中的主体内容private void buildMainbody(List<Product> productList,Long totalCount,HttpServletRequest request, HSSFWorkbook workBook, HSSFSheet sheet, int i) {
//创建行，下标注意
HSSFRow contentRow = sheet.createRow(i+5);
Product product = productList.get(i);
//创建列
HSSFCell idCell = contentRow.createCell(6);
idCell.setCellValue(product.getId());
HSSFCell nameCell = contentRow.createCell(7);
nameCell.setCellValue(product.getProductName());
HSSFCell priceCell = contentRow.createCell(8);
priceCell.setCellValue(product.getProductPrice());
if(product.getProductPrice()<50) {
//年龄样式
buildPriceStyle(workBook, priceCell);
}else if(product.getProductPrice()>100){
buildPriceMaxStyle(workBook, priceCell);
}
HSSFCell brandNameCell = contentRow.createCell(9);
brandNameCell.setCellValue(product.getBrand().getBrandName());
HSSFCell imgCell = contentRow.createCell(10);
buildImgUrl(workBook,request, sheet, i, product, imgCell);
HSSFCell imgPrictureCell = contentRow.createCell(11);
imgPrictureCell.setCellValue(totalCount);
HSSFCellStyle fontStyle = bulidFontStyleHead(workBook);
idCell.setCellStyle(fontStyle);
nameCell.setCellStyle(fontStyle);
brandNameCell.setCellStyle(fontStyle);
imgPrictureCell.setCellStyle(fontStyle);
imgCell.setCellStyle(fontStyle);
}对应的是主体内容中的价格的样式private void buildPriceStyle(HSSFWorkbook workBook, HSSFCell ageCell) {
//设置样式
HSSFCellStyle style = workBook.createCellStyle();
HSSFFont font = workBook.createFont();
font.setFontHeightInPoints((short) 11);//字号
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);//加粗
font.setColor(HSSFColor.RED.index);//设置字体颜色
font.setFontName("宋体"); // 将“黑体”字体应用到当前单元格上
style.setFont(font);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//内容左右居中
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//内容上下居中
ageCell.setCellStyle(style);
}对应的是主体内容中的最大价格的样式private void buildPriceMaxStyle(HSSFWorkbook workBook, HSSFCell ageCell) {
//设置样式
HSSFCellStyle style = workBook.createCellStyle();
HSSFFont font = workBook.createFont();
font.setFontHeightInPoints((short) 11);//字号
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);//加粗
font.setColor(HSSFColor.BLUE.index);//设置字体颜色
font.setFontName("宋体"); // 将“黑体”字体应用到当前单元格上
style.setFont(font);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//内容左右居中
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//内容上下居中
ageCell.setCellStyle(style);
}
对应的是标题的样式private HSSFCellStyle bulidFontStyleHead(HSSFWorkbook workBook) {
//设置样式
HSSFCellStyle style = workBook.createCellStyle();
HSSFFont font = workBook.createFont();
font.setFontHeightInPoints((short) 11);//字号
//font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);//加粗
//font.setColor(HSSFColor.RED.index);//设置字体颜色
font.setFontName("宋体"); // 将“黑体”字体应用到当前单元格上
style.setFont(font);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);//内容左右居中
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);//内容上下居中
return style;
}对应的图片的设置private void buildImgUrl(HSSFWorkbook workBook,HttpServletRequest request, HSSFSheet sheet, int i, Product product, HSSFCell imgUrlCell) {
BufferedImage bufferImg = null;
File file=new File(request.getSession().getServletContext().getRealPath(product.getProductUrl()));
if(file!=null && file.length()>0){
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
try {
bufferImg = ImageIO.read(file);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
ImageIO.write(bufferImg, "jpg", byteArrayOut);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//画图的顶级管理器，一个sheet只能获取一个（一定要注意这点）
HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
//anchor主要用于设置图片的属性
// HSSFClientAnchor anchor = new HSSFClientAnchor(dx1, dy1, dx2, dy2, col1, row1, col2, row2)
HSSFClientAnchor anchor = new HSSFClientAnchor(11, i+11, 255, 255,(short) 10, 5+i, (short) 10, 5+i);
anchor.setAnchorType(3);
//插入图片
// HSSFPicture path = patriarch.createPicture(anchor, workbook.addPicture(byteArrayOut.toByteArray(), HSSFWorkbook.PICTURE_TYPE_JPEG));
/* fileOut = new FileOutputStream("D:/测试Excel.xls");
// 写入excel文件
wb.write(fileOut); */
imgUrlCell.equals( patriarch.createPicture(anchor, workBook.addPicture(byteArrayOut.toByteArray(), HSSFWorkbook.PICTURE_TYPE_JPEG)));
}
}标签：
原文地址：http://blog.csdn.net/wu920604/article/details/51888288
