post请求，下载excl文件（文件由poi生成）

JS部分：

新建一个from在影藏的div下，然后提交这个from

function downLoadExcl(){

$("#submitForm").remove();

var supplierInfoIds = "111";

var path = "${ctxPath}/secKill/exportActivityUrl.do";

var html = '<form method="post" id="submitForm" action="' +path+ '" >';

html += '<input name="supplierInfoIds" value="'+supplierInfoIds+'"/>';

html += '</form>';

$("#exportdiv").append(html);

$("#submitForm").submit();

}

java后台处理请求部分：

private static final String ATTACHMENT_FILENAME = "attachment; filename=\"";

private static final String STRING = "\"";

private static final String CONTENT_DISPOSITION = "Content-disposition";

private static final String APPLICATION_OCTET_STREAM = "APPLICATION/OCTET-STREAM";

private static final String ISO_8859_1 = "ISO-8859-1";

private static final String UTF_8 = "UTF-8";

private static final String USER_AGENT = "user-agent";

private static final String MSIE = "msie";

@RequestMapping("exportActivityUrl.do")

public void exportActivityUrl(HttpServletRequest request,

HttpServletResponse response) {

Map<String, Object> paramMap = this.getParamMapFromRequest(request);

// 生成excel

HSSFWorkbook workbook = secKillService

.querysupplierInfoByIdsAndExport(paramMap);

String excelname = "";

excelname = "秒杀活动链接.xls";

String newexcelname = "";

String isIE = request.getHeader(USER_AGENT);

try {

if (isIE.toLowerCase().indexOf(MSIE) < 0) {

// 解决中文excel文件名乱码问题,非IE

newexcelname = new String(excelname.getBytes(UTF_8),

ISO_8859_1);

} else {

// 解决中文excel文件名乱码问题,IE

newexcelname = URLEncoder.encode(excelname, UTF_8);

}

} catch (Exception e) {

logger.logException(e);

}

response.reset();

response.setContentType(APPLICATION_OCTET_STREAM);

response.setHeader(CONTENT_DISPOSITION, ATTACHMENT_FILENAME + newexcelname + STRING); // 实现下载

try {

workbook.write(response.getOutputStream());// 实现输出

response.flushBuffer();

} catch (Exception e) {

logger.logException(e);

}

}

java后台，生成excl部分

/**

* 活动信息

*/

private static final String[] SIGNUP_KEY = { "商品编码", "商品名称", "秒杀价", "活动数量", "运费", "预热开始时间", "秒杀开始时间", "秒杀结束时间",

"秒杀活动链接" };

/**

* 活动信息

*/

private static final String[] SIGNUP_VALUE = { "productCode", "productName", "seckillPrice", "amount",

"mailingPrice", "preheadStartTime", "secKillStartTime", "secKillEndTime", "activityUrl" };

@Override

public HSSFWorkbook querysupplierInfoByIdsAndExport(

Map<String, Object> paramMap) {

// 声明一个工作薄

HSSFWorkbook workbook = new HSSFWorkbook();

// 查询导出信息

List<Map<String, Object>> supplierInfoList = dalClient.queryForList(NAMESPACE + ".querysupplierInfoByIds", paramMap);

// 设置单元格文本格式

HSSFCellStyle cellStyle = workbook.createCellStyle();

HSSFDataFormat format = workbook.createDataFormat();

cellStyle.setDataFormat(format.getFormat("@"));

// 生成一个sheet

HSSFSheet sheet = workbook.createSheet("秒杀活动链接");

HSSFRow row0 = sheet.createRow(0);// 定义第一行

// 由该字段判断应该创建几列

int keylen =SIGNUP_KEY.length;

for (int i = 0; i < keylen; i++) {

HSSFCell cell = row0.createCell(i);// 定义第i列

cell.setCellValue(SIGNUP_KEY[i]);// 给第i列赋值

cell.setCellStyle(cellStyle);// 设置为文本格式

}

if (CollectionUtils.isNotEmpty(supplierInfoList)) {

// 放入值

int len = supplierInfoList.size();

Map<String, Object> productMap;

for (int i = 0; i < len; i++) {

productMap = supplierInfoList.get(i);

HSSFRow newRow = sheet.createRow(i + 1);// 创建新的一行

newRow.setRowStyle(cellStyle); // 设置为文本格式

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

HSSFCell newCell = newRow.createCell(j);// 定义第i列

newCell.setCellValue(MapUtils.getString(productMap, SIGNUP_VALUE[j], ""));// 给第i列赋值

newCell.setCellStyle(cellStyle);

}

}

}

return workbook;

}