one of my junior code is not sending excel file as attachment . It is sending file like
------=_Part_0_2066339629.1374147892060
Content-Type: text/plain; name="Service_Change_Alert_Thu Jul 18 17:14:50 IST 2013.xlsx"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="Service_Change_Alert_Thu Jul 18 17:14:50 IST 2013.xlsx"
UEsDBBQACAAIANqJ8kIAAAAAAAAAAAAAAAARAAAAZG9jUHJvcHMvY29yZS54bWytkV1LwzAUhu/7
K0Lu2yTr1BHaDlEGguLADsW7kB7bYvNBEu3892bdrCheennyPu/D4aRY79WA3sH53ugSs4xiBFqa
ptdtiXf1Jl3hdZUkhTQOts5YcKEHj2JL+xJ3IVhOiJcdKOGzGOuYvBinRIija4kV8lW0QBaUnhMF
QTQiCHKwpXbW4aOPS/vvykbOSvvmhknQSAIDKNDBE5Yx8s0GcMr/WZiSmdz7fqbGcczGfOLiRow8
3d0+TMunvfZBaAm4ShAqTnYuHYgADYoOHj4slPgrecyvrusNrhaU5Sm9SNmqZowvl/yMPhfkV//k
function is following
public void sendSeviceabilityMail(List<OctpinSaveBean> datalist)
throws MessagingException {
Session session = null;
Map<String, String> utilsMap = ApplicationBean.utilsProperties;
if (utilsMap == null || utilsMap.size() == 0)
utilsMap = ApplicationBean.getUtilsPropertyFileValues();
smtpHost = utilsMap.get("SMTPHost");
to = utilsMap.get("To");
try {
if (smtpHost != null && to != null) {
Date date = new Date();
XSSFWorkbook updateDataBook =
updatedServiceabilityExcel(datalist);
Properties props = System.getProperties();
props.put("mail.smtp.host", smtpHost);
props.put("To", to);
session = Session.getInstance(props, null);
String str = "strstr";
Multipart multipart = new MimeMultipart();
BodyPart messageBodyPart1 = new MimeBodyPart();
messageBodyPart1.setContent(str, "text/html");
BodyPart messageBodyPart = new MimeBodyPart();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
updateDataBook.write(baos);
byte[] bytes = baos.toByteArray();
DataSource ds = new ByteArrayDataSource(bytes,
"application/vnd.ms-excel");
DataHandler dh = new DataHandler(ds);
messageBodyPart.setDataHandler(dh);
String fileName = "Service_Change_Alert_" + date+".xlsx";
messageBodyPart.setFileName(fileName);
messageBodyPart.setHeader("Content-disposition", "attachment;
filename=\"" + fileName + "\"");
multipart.addBodyPart(messageBodyPart1);
multipart.addBodyPart(messageBodyPart);
if (to != null && to.length() > 0) {
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress("tech_noida
<tech_noida#xyz.com>"));
String[] toArray = to.split(",");
InternetAddress[] address = new
InternetAddress[toArray.length];
for (int i = 0; i < toArray.length; i++) {
address[i] = new InternetAddress(toArray[i]);
}
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject("Updated Serviceability Alert!!!");
msg.setContent(multipart);
msg.setSentDate(date);
try {
Transport.send(msg);
logger.info("Mail has been sent about the updated serviceability alert to :" + to);
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
The problem is not related to POI, but with JavaMail (plus the way different email clients handles the specs and malformed emails). Try this:
Multipart multipart = new MimeMultipart();
MimeBodyPart html = new MimeBodyPart();
// Use actual html not "strstr"
html.setContent("<html><body><h1>Hi</h1></body></html>", "text/html");
multipart.addBodyPart(html);
// ...
// Joop Eggen suggestion to avoid spaces in the file name
String fileName = "Service_Change_Alert_"
+ new SimpleDateFormat("yyyy-MM-dd_HH:mm").format(date) + ".xlsx";
ByteArrayOutputStream baos = new ByteArrayOutputStream();
updateDataBook.write(baos);
byte[] poiBytes = baos.toByteArray();
// Can be followed by the DataSource / DataHandler stuff if you really need it
MimeBodyPart attachment = new MimeBodyPart();
attachment.setFileName(filename);
attachment.setContent(poiBytes, "application/vnd.ms-excel");
//attachment.setDataHandler(dh);
attachment.setDisposition(MimeBodyPart.ATTACHMENT);
multipart.addBodyPart(attachment);
Update:
Also don't forget to call saveChanges to update the headers before sending the message.
msg.saveChanges();
See this answer for further details.
Related
I was trying to make a rest endpoint in Spring Boot which reads from DB, generates an excel file(Using Apache POI) which is returned to the user using HttpServletResponse but when I invoke this, the excel is getting created but it's not downloading. I had some other code earlier in place which was working fine but I accidentally removed that and now I'm stuck. Any help/leads are appreciated.
#RequestMapping(path = "/save", method = RequestMethod.GET)
public ResponseEntity<String> saveToXls(#RequestParam String id, #RequestParam String appName, HttpServletResponse response) {
AppInstance appInstance = appInstanceRepo.get(id);
List<DownloadDetail> downloadDetailList = downloadDAO.searchByInstanceId(id);
//List<DownloadDetail> downloadDetailList = appInstance.getDownloads();
System.out.print("LIST SIZE:" + downloadDetailList.size());
String fileName = appName + " report";
File myFile = new File(fileName + ".xls");
FileOutputStream fileOut;
downloadDetailList.forEach(downloadDetail -> System.out.print(downloadDetail.getSid()));
try {
try (HSSFWorkbook workbook = new HSSFWorkbook()) {
HSSFSheet sheet = workbook.createSheet("lawix10");
HSSFRow rowhead = sheet.createRow((short) 0);
rowhead.createCell((short) 0).setCellValue("SID");
rowhead.createCell((short) 1).setCellValue("Download Time");
rowhead.createCell((short) 2).setCellValue("OS Version");
int i = 0;
for (DownloadDetail downloadDetail : downloadDetailList) {
System.out.print("In loop -2");
HSSFRow row = sheet.createRow((short) i);
row.createCell((short) 0).setCellValue(downloadDetail.getSid());
row.createCell((short) 1).setCellValue(downloadDetail.getDownloadTime());
row.createCell((short) 2).setCellValue(downloadDetail.getOsVersion());
i++;
}
fileOut = new FileOutputStream(myFile);
workbook.write(fileOut);
}
fileOut.close();
byte[] buffer = new byte[10240];
response.addHeader("Content-disposition", "attachment; filename=test.xls");
response.setContentType("application/vnd.ms-excel");
try (
InputStream input = new FileInputStream(myFile);
OutputStream output = response.getOutputStream();
) {
for (int length = 0; (length = input.read(buffer)) > 0;) {
output.write(buffer, 0, length);
}
}
response.flushBuffer();
} catch (FileNotFoundException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
return null;
}
EDIT:
I tried to do it another way as shown below:
try (InputStream is = new FileInputStream(myFile)) {
response.addHeader("Content-disposition", "attachment; filename=test.xls");
response.setContentType("application/vnd.ms-excel");
IOUtils.copy(is, response.getOutputStream());
}
response.flushBuffer();
This also doesn't seem to cut it.
This is a my example. Probably the issue is how you manage the OutputStream:
ServletOutputStream os = response.getOutputStream();
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=\""+fileName+".xls\"");
workbook = excelStrategyMap.get(strategy).export(idList, status, params);
workbook.write(os);
workbook.close();
os.flush();
response.flushBuffer();
Once you get the workbook file, set the file name and file type. and add the response header and content type as mentioned below.
Then write the file to the response and flush it's buffer.
XSSFWorkbook file = excelUploadService.downloadDocument();
String filename = "Export.xlsx";
String filetype = "xlsx";
response.addHeader("Content-disposition", "attachment;filename=" + filename);
response.setContentType(filetype);
// Copy the stream to the response's output stream.
file.write(response.getOutputStream());
response.flushBuffer();
In the client side, get the response from the REST API and set the content type received by the response object. Using FileSaver library save the file into your local file system.
Here is the documentation for FileSaver js -- File saver JS Library
var type = response.headers("Content-Type");
var blob = new Blob([response.data], {type: type});
saveAs(blob, 'Export Data'+ '.xlsx');
#GetMapping(value = "/", produces = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
#ResponseBody
public byte[] generateExcel() {
byte[] res = statisticsService.generateExcel();
return res;
This question already has answers here:
How to provide a file download from a JSF backing bean?
(5 answers)
Closed 5 years ago.
i made a call to download() method to save json into xml with extension ".svg". The jsondata is global variable store json.
public void download(){
File file = exportFile(jsondata);
HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();
writeOutContent(response, file, file.getName());
FacesContext.getCurrentInstance().responseComplete();
FacesContext.getCurrentInstance().renderResponse();
}
and the exportFile(jsondata) is
public File exportFile(String jsonData){
File xmlFile = null;
try {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.newDocument();
JSONObject jsonObject = new JSONObject(jsonData);
Element root = doc.createElement("web");
doc.appendChild(root);
Element rootElement1 = doc.createElement("class");
rootElement1.appendChild(doc.createTextNode(jsonObject.getString("class")));
root.appendChild(rootElement1);
JSONArray jsonArray1 = (JSONArray) jsonObject.get("nodes");
Element rootElement2 = doc.createElement("nodes");
root.appendChild(rootElement2);
for (int i = 0; i < jsonArray1.length(); i++) {
Element staff = doc.createElement("node");
rootElement2.appendChild(staff);
JSONObject childObject = (JSONObject) jsonArray1.get(i);
Iterator<String> keyItr = childObject.keys();
while (keyItr.hasNext()) {
String key = keyItr.next();
Element property = doc.createElement(key);
property.appendChild(doc.createTextNode(childObject.getString(key)));
staff.appendChild(property);
}
}
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
//for pretty print
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
DOMSource source = new DOMSource(doc);
xmlFile = new File("file.svg");
//write to console or file
// StreamResult console = new StreamResult(System.out);
StreamResult file = new StreamResult(xmlFile);
//write data
// transformer.transform(source, console);
transformer.transform(source, file);
} catch (Exception pce) {
pce.printStackTrace();
}
return xmlFile;
}
finally to write this one file writeOutContent()
public void writeOutContent(final HttpServletResponse res, final File content, final String theFilename) {
if (content == null) {
System.out.println("content is null");
return;
}
try {
res.setHeader("Content-Disposition", "attachment; filename=\"" + theFilename + "\"");
System.out.println("res " + res.getHeader("attachment; filename=\"" + theFilename + "\""));
res.setContentType("application/octet-stream");
FileInputStream fis = new FileInputStream(content);
OutputStream os = res.getOutputStream();
int bt = fis.read();
while (bt != -1) {
os.write(bt);
bt = fis.read();
}
os.flush();
fis.close();
os.close();
} catch (Exception ex) {
Logger.getLogger(DownloadFile.class.getName()).log(Level.SEVERE, null, ex);
}
}
i can see the xml in console but what am doing wrong that its not downloading?? please help me.
thanks in advance.
i got the mistake. it was not in above code. if we make through commandLink then it won't work but if make call through commandButton then it worked. if you want know know more read difference between commandButton vs commandLink
As I'm playing around with the Watson API I am using the Text2Speech service to get an audio stream (file) from the service. I already get the file with the code but my MIME doesn't contain anything later. I save the document after I call this method below. Any best pratices for streaming a byte content directly to a MIME would be appreciated.
public void getSpeechFromText(AveedoContext aveedoContext, Document doc, String fieldName, String text, String voiceName) {
try {
Session session = aveedoContext.getXspHelper().getSession();
session.setConvertMIME(false);
TextToSpeech service = new TextToSpeech();
String username = watsonSettings.getTextToSpeechUsername();
String password = watsonSettings.getTextToSpeechPassword();
if (username.isEmpty() || password.isEmpty()) {
throw new AveedoException("No credentials provided for service");
}
service.setUsernameAndPassword(username, password);
MIMEEntity mime = doc.getMIMEEntity(fieldName);
if (mime == null) {
mime = doc.createMIMEEntity(fieldName);
}
// local proxy?
if (!Util.isEmpty(customEndpoint)) {
// service.setEndPoint(customEndpoint + "/speech/");
}
Voice voice = Voice.getByName(voiceName);
AudioFormat audio = AudioFormat.WAV;
System.out.println("Fieldname: " + fieldName + "SPEECH: " + text + ", Voice: " + voice.getName() + ", Format: "
+ audio.toString());
InputStream stream = service.synthesize(text, voice, audio).execute();
InputStream in = WaveUtils.reWriteWaveHeader(stream);
Stream out = session.createStream();
byte[] buffer = new byte[1024];
int length;
while ((length = in.read(buffer)) > 0) {
out.write(buffer);
}
mime.setContentFromBytes(out, "audio/wav", MIMEEntity.ENC_IDENTITY_BINARY);
out.close();
session.setConvertMIME(true);
in.close();
stream.close();
} catch (Throwable e) {
aveedoLogger.error("Error calling Watson service (text to speech)", e);
e.printStackTrace();
}
}
I believe that you need to create a child MIME entity. I use the following code in one of my apps to attach an image:
boolean convertMime = JSFUtil.getSessionAsSigner().isConvertMime();
if (convertMime) {
JSFUtil.getSessionAsSigner().setConvertMime(false);
}
final MIMEEntity body = doc.createMIMEEntity(getAttachmentFieldName());
// Add binary attachment
final MIMEEntity attachmentChild = body.createChildEntity();
final MIMEHeader bodyHeader = attachmentChild.createHeader("Content-Disposition");
bodyHeader.setHeaderVal("attachment; filename=" + incident.getPhoto().getName());
Stream imgStream = getPhoto(doc, incident.getPhoto());
attachmentChild.setContentFromBytes(imgStream, incident.getPhoto().getType(), MIMEEntity.ENC_IDENTITY_BINARY);
imgStream.close();
imgStream.recycle();
imgStream = null;
if (convertMime) {
JSFUtil.getSessionAsSigner().setConvertMime(true);
}
I want to send DataSet data with email excel file attachment in C# but I don't want to create Excel file physically. It can be do with MemoryStream but I couldn't.
Another problem I want to set Excel file's encoding type because data may be Russian or Turkish special character.
Please help me...
Here is my sample code...
<!-- language: c# -->
var response = HttpContext.Response;
response.Clear();
response.Charset = "utf-8";
response.ContentEncoding = System.Text.Encoding.Default;
GridView excelGridView = new GridView();
excelGridView.DataSource = InfoDataSet;
excelGridView.DataBind();
excelStringWriter = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(excelStringWriter);
excelGridView.RenderControl(htw);
byte[] ExcelData = emailEncoding.GetBytes(excelStringWriter.ToString());
MemoryStream ms = new MemoryStream(ExcelData);
mailMessage.Attachments.Add(new Attachment(ms, excelFileName, "application/ms-excel"));
<!-- language: c# -->
here is another one simple and easy with excel attchment
public string SendMail(string LastId)
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["con"].ConnectionString);
SqlCommand cmd = new SqlCommand("sp_GetMailData", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("#LastID", LastId);
con.Open();
string result = "0";
string temptext = "";
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt=new DataTable();
da.Fill(dt);
//ExportToSpreadsheet(dt,"My sheet");
GridView gv = new GridView();
gv.DataSource = dt;
gv.DataBind();
AttachandSend(gv);
con.Close();
return result.ToString();
}
public void AttachandSend(GridView gv)
{
StringWriter stw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(stw);
gv.RenderControl(hw);
System.Text.Encoding Enc = System.Text.Encoding.ASCII;
byte[] mBArray = Enc.GetBytes(stw.ToString());
System.IO.MemoryStream mAtt = new System.IO.MemoryStream(mBArray, false);
System.Net.Mail.MailMessage mailMessage = new System.Net.Mail.MailMessage();
MailAddress address = new
MailAddress("xxxxxxxxxxxxx", "Admin");
mailMessage.Attachments.Add(new Attachment(mAtt, "sales.xls"));
mailMessage.Body = "Hi PFA";
mailMessage.From = address;
mailMessage.To.Add("xxxxxxxxxxxx");
mailMessage.Subject = "xxxxxxxxxxxxxx";
mailMessage.IsBodyHtml = true;
var smtp = new SmtpClient();
smtp.Send(mailMessage);
}
Here is your solution
private static Stream DataTableToStream(DataTable table)
{
const string semiColon = ";";
var ms = new MemoryStream();
var sw = new StreamWriter(ms);
foreach (DataColumn column in table.Columns)
{
sw.Write(column.ColumnName);
sw.Write(semiColon);
}
sw.Write(Environment.NewLine);
foreach (DataRow row in table.Rows)
{
for (int i = 0; i < table.Columns.Count; i++)
{
sw.Write(row[i].ToString().Replace(semiColon, string.Empty));
sw.Write(semiColon);
}
sw.Write(Environment.NewLine);
}
return ms;
}
private static MailMessage CreateMail(string from,
string to,
string subject,
string body,
string attname,
Stream tableStream)
{
// using System.Net.Mail
var mailMsg = new MailMessage(from, to, subject, body);
tableStream.Position = 0;
mailMsg.Attachments.Add(
new Attachment(tableStream, attname, CsvContentType));
return mailMsg;
}
private const string CsvContentType = "application/ms-excel";
private static void ExportToSpreadsheetInternal(Stream tableStream, string name)
{
HttpContext context = HttpContext.Current;
context.Response.Clear();
context.Response.ContentType = CsvContentType;
context.Response.AppendHeader(
"Content-Disposition"
, "attachment; filename=" + name + ".xls");
tableStream.Position = 0;
tableStream.CopyTo(context.Response.OutputStream);
context.Response.End();
}
public static void ExportToSpreadsheet(DataTable table, string name)
{
var stream = DataTableToStream(table);
var mailMsg = CreateMail("from#ddd.com",
"to#ddd.com",
"spread",
"the spread",
name,
stream);
//ExportToSpreadsheetInternal(stream, name);
// send the mailMsg with SmtpClient (config in your web.config)
var smtp = new SmtpClient();
smtp.Send(mailMsg);
}
Call this method
ExportToSpreadsheet(DataTable table, string name)
I have a problem in API Management, I want to create images in item 1 item, but I still can not do it forever. I use c # language, I feel depressed
i want to create a resource in catchoom.
can you help me
byte[] buffer = null;
byte[] data = null;
byte[] data1 = null;
HttpWebRequest request = null;
int bytesRead = 0;
long length = 0;
string boundary = DateTime.Now.Ticks.ToString("x");
// string boundary = "AaB03x";
StringBuilder sb = null;
// Create the HttpWebRequest object
request = (HttpWebRequest)HttpWebRequest.Create("https://crs.catchoom.com/api/v0/image/?api_key=5aba12ba6974c04ebc95da45ba1597d27d75238f");
// Specify the ContentType
request.ContentType = "multipart/form-data; boundary=" + boundary;
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
// Specify the Method
request.Method = "POST";
request.KeepAlive = false;
// Create the StringBuilder object
sb = new StringBuilder();
// Constrcut the POST header message
sb.AppendLine("");
sb.AppendLine("--" + boundary);
sb.AppendLine("Content-Disposition: form-data; name=\"anh\"");
sb.AppendLine("");
sb.AppendLine("/api/v0/item/aee726ff67274fcb80f4c24f27861c1e/");
sb.AppendLine("--" + boundary);
sb.AppendLine("Content-Disposition: file; name=\"anh\"; filename=\"anh\"");
sb.AppendLine("Content-Type: image/jpg");
sb.AppendLine("");
StringBuilder sb1 = new StringBuilder();
sb1.AppendLine("");
sb1.AppendLine("--" + boundary + "--");
// Convert the StringBuilder into a string
data = Encoding.UTF8.GetBytes(sb.ToString());
data1 = Encoding.UTF8.GetBytes(sb1.ToString());
//
using (FileStream fs = new FileStream(#"D:\17. NHATLINH\ToolKit_Catchoom\ToolKit_Catchoom\bin\Debug\aa.jpg", FileMode.Open, FileAccess.Read))
{
length = data.Length + fs.Length + data1.Length;
// đưa thông tin chiều dài của gói gửi đi vào
request.ContentLength = length;
//
using (Stream stream = request.GetRequestStream())
{
// ghi header vào gói gửi đi
stream.Write(data, 0, data.Length);
//
buffer = new Byte[checked((uint)Math.Min(4096, (int)fs.Length))];
// buffer = new Byte[fs.Length];
// Write the file contents
while ((bytesRead = fs.Read(buffer, 0, buffer.Length)) != 0)
{
stream.Write(buffer, 0, bytesRead);
}
stream.Write(data1, 0, data1.Length);
//
try
{
Console.WriteLine(request.ContentType);
Console.WriteLine(sb.ToString() + sb1.ToString());
WebResponse responce = request.GetResponse();
Stream s = responce.GetResponseStream();
StreamReader sr = new StreamReader(s);
MessageBox.Show(sr.ReadToEnd());
}
catch (Exception ec)
{
MessageBox.Show(ec.Message);
}
}
}
Building a multipart-encoded request is an error-prone task ( it is normal if you feel frustrated trying ), I recommend you to use a library to handle this kind of things, no point in reinventing the wheel :)
If you are using the Microsoft .NET Framework >= 4.5, you may use the HttpClient class as this answer explains.
Hope this help you ;)