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Updated text and code part for Convert each email attachment to different format documentation
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‎java/_sample_files/developer-guide/converting-documents/convert-each-email-attachment-to-different-format/converted_0.docx‎

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‎java/_sample_files/developer-guide/converting-documents/convert-each-email-attachment-to-different-format/converted_1.pdf‎

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‎java/_sample_files/developer-guide/converting-documents/convert-each-email-attachment-to-different-format/with-attachment.eml‎

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Return-Path: <mlemos@acm.org>
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To: Manuel Lemos <mlemos@linux.local>
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Subject: Testing Manuel Lemos' MIME E-mail composing and sending PHP class: HTML message
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From: mlemos <mlemos@acm.org>
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Reply-To: mlemos <mlemos@acm.org>
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Sender: mlemos@acm.org
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X-Mailer: http://www.phpclasses.org/mimemessage $Revision: 1.63 $ (mail)
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MIME-Version: 1.0
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Content-Type: multipart/mixed; boundary="652b8c4dcb00cdcdda1e16af36781caf"
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Message-ID: <20050430192829.0489.mlemos@acm.org>
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Date: Sat, 30 Apr 2005 19:28:29 -0300
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--652b8c4dcb00cdcdda1e16af36781caf
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Content-Type: multipart/related; boundary="6a82fb459dcaacd40ab3404529e808dc"
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--6a82fb459dcaacd40ab3404529e808dc
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Content-Type: multipart/alternative; boundary="69c1683a3ee16ef7cf16edd700694a2f"
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--69c1683a3ee16ef7cf16edd700694a2f
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Content-Type: text/plain; charset=ISO-8859-1
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Content-Transfer-Encoding: quoted-printable
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This is an HTML message. Please use an HTML capable mail program to read
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this message.
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--69c1683a3ee16ef7cf16edd700694a2f
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Content-Type: text/html; charset=ISO-8859-1
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Content-Transfer-Encoding: quoted-printable
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<html>
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<head>
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<title>Testing Manuel Lemos' MIME E-mail composing and sending PHP class: H=
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TML message</title>
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<style type=3D"text/css"><!--
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body { color: black ; font-family: arial, helvetica, sans-serif ; backgroun=
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d-color: #A3C5CC }
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A:link, A:visited, A:active { text-decoration: underline }
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--></style>
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</head>
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<body>
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<table background=3D"cid:4c837ed463ad29c820668e835a270e8a.gif" width=3D"100=
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%">
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<tr>
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<td>
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<center><h1>Testing Manuel Lemos' MIME E-mail composing and sending PHP cla=
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ss: HTML message</h1></center>
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<hr>
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<P>Hello Manuel,<br><br>
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This message is just to let you know that the <a href=3D"http://www.phpclas=
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ses.org/mimemessage">MIME E-mail message composing and sending PHP class</a=
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> is working as expected.<br><br>
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<center><h2>Here is an image embedded in a message as a separate part:</h2>=
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</center>
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<center><img src=3D"cid:ae0357e57f04b8347f7621662cb63855.gif"></center>Than=
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k you,<br>
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mlemos</p>
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</td>
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</tr>
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</table>
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</body>
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</html>
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--69c1683a3ee16ef7cf16edd700694a2f--
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--6a82fb459dcaacd40ab3404529e808dc
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Content-Transfer-Encoding: base64
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Content-Disposition: inline; filename="logo.gif"
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Content-ID: <ae0357e57f04b8347f7621662cb63855.gif>
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--6a82fb459dcaacd40ab3404529e808dc--
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--652b8c4dcb00cdcdda1e16af36781caf
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Content-Type: text/plain; name="attachment.txt"
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Content-Transfer-Encoding: base64
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Content-Disposition: attachment; filename="attachment.txt"
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--652b8c4dcb00cdcdda1e16af36781caf--
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‎java/developer-guide/advanced-usage/converting/conversion-options-by-document-family/convert-each-email-attachment-to-different-format.md‎

Lines changed: 78 additions & 39 deletions
Original file line numberDiff line numberDiff line change
@@ -8,55 +8,94 @@ keywords: Convert email attachments, Convert MSG attachments, Convert EML attach
88
productName: GroupDocs.Conversion for Java
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hideChildren: False
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---
11-
GroupDocs.Conversion provides a flexible API to control the conversion of documents that contain other documents.
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To convert each attachment within an email to a different format using [GroupDocs.Conversion for Java](https://products.groupdocs.com/conversion/java/), you can utilize the [EmailLoadOptions](https://reference.groupdocs.com/conversion/java/com.groupdocs.conversion.options.load/emailloadoptions/) class. This class provides various properties to customize the loading and conversion of email documents.
1212

1313
The following code snippet shows how to convert each attachment to a different format based on attachment type:
1414

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{{< tabs "code-example">}}
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{{< tab "ConvertEachEmailAttachmentToDifferentFormat.java" >}}
1517
```java
1618
import com.groupdocs.conversion.Converter;
17-
import com.groupdocs.conversion.options.load.EmailLoadOptions;
19+
import com.groupdocs.conversion.contracts.ConvertOptionsProvider;
20+
import com.groupdocs.conversion.contracts.LoadOptionsProvider;
21+
import com.groupdocs.conversion.contracts.SaveDocumentStreamForFileType;
22+
import com.groupdocs.conversion.examples.Constants;
23+
import com.groupdocs.conversion.filetypes.EmailFileType;
24+
import com.groupdocs.conversion.filetypes.WordProcessingFileType;
25+
import com.groupdocs.conversion.options.convert.ImageConvertOptions;
1826
import com.groupdocs.conversion.options.convert.PdfConvertOptions;
19-
import java.io.IOException;
27+
import com.groupdocs.conversion.options.convert.WordProcessingConvertOptions;
28+
import com.groupdocs.conversion.options.load.EmailLoadOptions;
29+
import com.groupdocs.conversion.utils.common.Path;
30+
import java.io.FileNotFoundException;
2031
import java.io.FileOutputStream;
21-
import java.nio.file.Files;
22-
import java.nio.file.Paths;
23-
import java.util.ArrayList;
24-
import java.util.List;
25-
...
26-
EmailLoadOptions emailLoadOptions = new EmailLoadOptions();
27-
emailLoadOptions.setConvertOwned(true);
28-
emailLoadOptions.setConvertOwner(true);
29-
emailLoadOptions.setDepth(2);
30-
31-
Converter converter=new Converter("sample_with_attachments.eml",emailLoadOptions);
32-
33-
PdfConvertOptions options = new PdfConvertOptions();
34-
options.setPassword("12345");
35-
options.setDpi(300);
36-
37-
final List<FileOutputStream> fileOutputStreams = new ArrayList<>();
38-
try{
39-
converter.convert(new SaveDocumentStreamForFileType(){
40-
@Override
41-
public Stream invoke(FileType t){
42-
try{
43-
FileOutputStream fileOutputStream=new FileOutputStream("converted-"+fileOutputStreams.size()+".pdf");
44-
fileOutputStreams.add(fileOutputStream);
45-
return new GroupDocsOutputStream(fileOutputStream);
46-
} catch(IOException e) {
47-
throw new RuntimeException(e);
48-
}
32+
33+
public class ConvertEachEmailAttachmentToDifferentFormat {
34+
public static void convert() {
35+
final int[] index = {0};
36+
37+
LoadOptionsProvider loadOptionsProvider = ()->{
38+
EmailLoadOptions emailOpt = new EmailLoadOptions();
39+
emailOpt.setConvertOwner(true);
40+
emailOpt.setConvertOwned(true);
41+
emailOpt.setDepth(2);
42+
return emailOpt;
43+
};
44+
45+
SaveDocumentStreamForFileType convertedStreamProvider = (fileType)->{
46+
String fileName = Path.combine(outputFolder, String.format("converted_%d.%s", index[0], fileType.getExtension()));
47+
index[0]++;
48+
try {
49+
return new FileOutputStream(fileName);
50+
} catch (FileNotFoundException e) {
51+
throw new RuntimeException(e);
4952
}
50-
}, options);
51-
}finally{
52-
try{
53-
for(OutputStream outputStream:fileOutputStreams){
54-
outputStream.close();
53+
};
54+
55+
ConvertOptionsProvider convertOptionsProvider = (sourceFileName, fileType) -> {
56+
if (fileType == EmailFileType.Eml)
57+
{
58+
return new WordProcessingConvertOptions();
5559
}
56-
} catch(IOException e) {
57-
//throw an exception
60+
61+
if (fileType == WordProcessingFileType.Txt)
62+
{
63+
return new PdfConvertOptions();
64+
}
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return new ImageConvertOptions();
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};
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// Initialize the converter with the source email document
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try(Converter converter = new Converter(Constants.SAMPLE_EML_WITH_ATTACHMENT, loadOptionsProvider))
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{
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converter.convert(convertedStreamProvider, convertOptionsProvider);
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}
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}
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public static void main(String[] args){
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convert();
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}
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}
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```
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{{< /tab >}}
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{{< tab "with-attachment.eml" >}}
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{{< tab-text >}}
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`with-attachment.eml` is sample file used in this example. Click [here](/conversion/java/_sample_files/developer-guide/converting-documents/convert-each-email-attachment-to-different-format/with-attachment.eml) to download it.
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{{< /tab-text >}}
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{{< /tab >}}
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{{< tab "converted_0.docx" >}}
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{{< tab-text >}}
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`converted_0.docx` is converted DOCX document. Click [here](/conversion/java/_sample_files/developer-guide/converting-documents/convert-each-email-attachment-to-different-format/converted_0.docx) to download it.
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{{< /tab-text >}}
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{{< /tab >}}
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{{< tab "converted_1.pdf" >}}
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{{< tab-text >}}
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`converted_1.pdf` is converted attachment PDF document. Click [here](/conversion/java/_sample_files/developer-guide/converting-documents/convert-each-email-attachment-to-different-format/converted_1.pdf) to download it.
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{{< /tab-text >}}
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{{< /tab >}}
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{{< /tabs >}}
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In this example, the [Converter](https://reference.groupdocs.com/conversion/java/com.groupdocs.conversion/converter/) class is initialized with the source email document and [EmailLoadOptions](https://reference.groupdocs.com/conversion/java/com.groupdocs.conversion.options.load/emailloadoptions/). Using the `convertOptionsProvider`, it becomes possible to apply appropriate [ConvertOptions](https://reference.groupdocs.com/conversion/java/com.groupdocs.conversion.options.convert/convertoptions/) to specify the target format for each conversion. Then, the `convertedStreamProvider` is invoked to handle and save each conversion.
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{{< alert style="warning" >}}This functionality is introduced in v21.7{{< /alert >}}
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By utilizing these options, you can effectively control the loading and conversion process of email attachments to meet your specific requirements.

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