excle下载

@requestMAPPing(value="/download_index")

public String downloadexcel(HttpServletRequest request,HttpServletresponse response,String name) {

WritableWorkbook wbook = null;

try {

String flieName = name;

// 取得输出流

os = response.getOutputStream();

response.reset();// 清空输出流

// 设定输出文件头

response.setheader("content-Disposition", "attachment; filename=" + new String(flieName.getBytes("UTF-8"), "ISO8859-1") + ".xls");

// 定义输出类型

response.setcontenttype("application/msexcel;charset=utf-8");

// 建立excel文件

wbook = Workbook.createWorkbook(os);

//要下载的list数据

List unifiedVOList = new ArrayList();

// 设置数据

setWorkBookData(unifiedVOList, wbook,flieName);

if (wbook.getNumberOfSheets() > 0) {

wbook.write();

}

wbook.close();

os.close();

} catch (Exception e) {

e.printstacktrace();

}finally {

if(wbook != null) {

try {

wbook.close();

} catch (WriteException | IOException e) {

e.printStackTrace();

}

}

if(os != null) {

try {

os.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

return null;

}

String [] codes 是页面传过来的要查询的内容，name 是传过来动态表名。for循环查出List数据,然后统一用unifiedVOList.addAll()合在一起。然后将list数据集合传入方法内、work、表名传入方法内。private void setWorkBookData(List giftRecords, WritableWorkbook wbook,String name)

throws WriteException, RowsExceededException {

final integer EXCEL_MAX_NUMBER = 65535;

WritableCellformat wc = new WritableCellFormat();

// 设置居中

wc.setAlignment(Alignment.CENTRE);

simpledateformat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

WritableSheet wsheet = null;

int sheetNumber = 0;

if (giftRecords.size() % EXCEL_MAX_NUMBER != 0) {

sheetNumber = giftRecords.size() / EXCEL_MAX_NUMBER + 1;

} else {

sheetNumber = giftRecords.size() / EXCEL_MAX_NUMBER;

}

for (int j = 0; j < sheetNumber; j++) {

wsheet = wbook.createSheet(name + (j + 1), j); // sheet名称

// 开始生成主体内容

wsheet.addCell(new Label(0, 0, "名称", wc));

wsheet.setColumnView(0, 32);

wsheet.addCell(new Label(1, 0, "时间", wc));

wsheet.setColumnView(1, 20);

wsheet.addCell(new Label(2, 0, "数据", wc));

wsheet.setColumnView(2, 32);

wsheet.addCell(new Label(3, 0, "单位", wc));

wsheet.setColumnView(3, 30);

int start = EXCEL_MAX_NUMBER * j;

int end = EXCEL_MAX_NUMBER + start;

for (int i = start, k = giftRecords.size(); i < k && i < end; i++) {

UnifiedVO unifiedVO = giftRecords.get(i);

int row = i - start + 1;

wsheet.addCell(new Label(0, row, unifiedVO .getKey(), wc));

wsheet.addCell(new Label(1, row, unifiedVO .getDate(), wc));

wsheet.addCell(new Label(2, row, unifiedVO .getData(), wc));

wsheet.addCell(new Label(3, row, unifiedVO .getUnit(), wc));

}

}

}

wsheet.addCell(new Label(0, 0, "名称", wc))

wsheet.addCell(new Label(1, 0, "时间", wc));

wsheet.addCell(new Label(2, 0, "数据", wc));

wsheet.addCell(new Label(3, 0, "单位", wc));

上面的字段一一对应VO字段

wsheet.addCell(new Label(0, row, unifiedVO .getKey(), wc));

wsheet.addCell(new Label(1, row, unifiedVO .getDate(), wc));

wsheet.addCell(new Label(2, row, unifiedVO .getData(), wc));

wsheet.addCell(new Label(3, row, unifiedVO .getUnit(), wc));

对应的maven API ：

net.sourceforge.jexcelapi

jxl

2.6.12

=====================================================================================

poi 导出：

org.apache.poi

poi

3.17

最简单的下载数据实现：public test(HttpServletRequest request,HttpServletResponse response) {

List> arrayList = new ArrayList();

OutputStream os = null;

// 取得输出流

try {

os = response.getOutputStream();

} catch (IOException e2) {

e2.printStackTrace();

}

response.reset();// 清空输出流

//1.在内存中创建一个excel文件

HSSFWorkbook hssfWorkbook = new HSSFWorkbook();

//2.创建工作簿

HSSFSheet sheet = hssfWorkbook.createSheet();

//3.创建标题行

HSSFRow titlerRow = sheet.createRow(0);

HSSFCellStyle createCellStyle = hssfWorkbook.createCellStyle();//创建单元格样式

createCellStyle.setFillForegroundcolor((short) 255);// 设置背景色

createCellStyle.setAlignment(HorizontalAlignment.CENTER_SELECTION); // 居中

createCellStyle.setBorderTop(BorderStyle.SLANTED_DASH_DOT);

titlerRow.createCell(0).setCellValue("营销顾问");

titlerRow.setRowStyle(createCellStyle);

for (Object o : arrayList) {

//获取最后一行的行号

int lastrownum = sheet.getLastRowNum();

HSSFRow dataRow = sheet.createRow(lastRowNum + 1);

dataRow.createCell(0).setCellValue(o.get营销顾问());

}

//5.创建文件名

String fileName = "区域数据统计.xls";

//9.设置信息头

response.setContentType(fileName);

try {

fileName = new String (fileName.getBytes ("utf-8"),"ISO8859-1");

} catch (UnsupportedEncodingException e2) {

e2.printStackTrace();

}

response.setHeader("Content-Disposition","attachment;filename="+fileName);

//10.写出文件,关闭流

try {

hssfWorkbook.write(os);

} catch (IOException e1) {

}

try {

hssfWorkbook.close();

} catch (IOException e) {

e.printStackTrace();

}

}

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