我正在尝试在 servlet 中创建一个 xlsx 文件并将其发送到用户可以保存或下载文件的浏览器。目前它一直在发送应用程序/八位字节流而不是一个 excel 文件。
我究竟做错了什么？
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
SXSSFWorkbook wb = new SXSSFWorkbook();
Sheet sheet = wb.createSheet("Results");
List<List<TableData>> results = (List<List<TableData>>) request.getSession().getAttribute("results");
String tableName = (String) request.getSession().getAttribute("tableName");
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date date = new Date();
String filename = tableName+"-"+df.format(date)+".xlsx";
int rowCounter = 0;
// Create the rows
for(List<TableData> l : results) {
int counter = 0;
Row row = sheet.createRow(rowCounter);
for(TableData td : l) {
Cell cell = row.createCell(counter);
// if we're on the first row, get the column description, else get the data
if(rowCounter == 0) {
cell.setCellValue(td.getColumnDescription());
} else {
cell.setCellValue(td.getData());
}
counter++;
}
rowCounter++;
}
try {
OutputStream out = response.getOutputStream();
wb.write(out);
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setHeader("Expires:", "0"); // eliminates browser caching
response.setHeader("Content-Disposition", "attachment; filename="+filename);
out.flush();
out.close();
} catch (Exception e) {
LOG.debug(e.getStackTrace().toString());
}
}