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Junk Characters Coming while Decoding Data in Base 64

Decode Base64 data in JavaGrails Base64 decoding of Authorization header malformed on decodeJava mail attachment raw content appended to mail body and not as fileBase64 encoding pdf file stream byte array is not getting decoded properly in email attachmentPlay Base64 encoded audio file in javaWhy doesn't Base64 Encoding of a byte[] in Java work?Issues in converting base64 decoded byte array to String in javaData decoded from Base64 by a PowerShell script is corrupt in some casesRemove junk characters (probably BOM) from xml file - VBAJava - Base64 byte array return as a string

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

0

I am getting PDF content which is Base 64 encoded. I tried to decode it using NIFI with Processor Base64EncodeContent. The Decoded file I am sending in mail. Below is small sample of output coming in mail.

enter image description here

"No data should be available in . ¹ Check if sent . . All documents are sent as pdf to* 9 : ’ ³: > < âA m¬‘²@%é‚ÇŽÇ¢|ÀÈ™$Éز§Uû÷LÒTB¨ l,îåù˜$â´º?6N¬JC¤ŒÃ°‰_Ïg -æ¿;ž‰ìÛÖYl`õ?èÓÌ[ ÿÿ PK"

How to extract the data in PDF as sent by third party?

I have tried to decode it using JAVA code and there also its failing. Not able to open the PDF, junk characters coming there too.

ConvertedJPGPDF.pdf file used below contains Base64 encoded String.

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = 
 Files.readAllBytes(Paths.get(filePath+originalFileName));


 // byte[] decodedBytes = Base64.getDecoder().decode(input_file);
 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);


 FileOutputStream fos = new FileOutputStream(filePath+newFileName);
 fos.write(decodedBytes1);
 fos.flush();
 fos.close();

java base64 apache-nifi

share|improve this question

edited Mar 26 at 10:27

nbalodi

asked Mar 26 at 9:59

nbalodinbalodi

2277 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Note that a PDF file is not a plain text file; if you treat it as if it is plain text, you'll get unreadable, random looking characters.
  
  – Jesper
  Mar 26 at 10:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried same as ConvertedJPGPDF.txt , not getting expected PDF. How can I achieve it?
  
  – nbalodi
  Mar 26 at 10:13
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You should not treat a PDF file as if it is a text file, that will not work.
  
  – Jesper
  Mar 26 at 10:30
  

  
  
  
  

add a comment | 

0

I am getting PDF content which is Base 64 encoded. I tried to decode it using NIFI with Processor Base64EncodeContent. The Decoded file I am sending in mail. Below is small sample of output coming in mail.

enter image description here

"No data should be available in . ¹ Check if sent . . All documents are sent as pdf to* 9 : ’ ³: > < âA m¬‘²@%é‚ÇŽÇ¢|ÀÈ™$Éز§Uû÷LÒTB¨ l,îåù˜$â´º?6N¬JC¤ŒÃ°‰_Ïg -æ¿;ž‰ìÛÖYl`õ?èÓÌ[ ÿÿ PK"

How to extract the data in PDF as sent by third party?

I have tried to decode it using JAVA code and there also its failing. Not able to open the PDF, junk characters coming there too.

ConvertedJPGPDF.pdf file used below contains Base64 encoded String.

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = 
 Files.readAllBytes(Paths.get(filePath+originalFileName));


 // byte[] decodedBytes = Base64.getDecoder().decode(input_file);
 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);


 FileOutputStream fos = new FileOutputStream(filePath+newFileName);
 fos.write(decodedBytes1);
 fos.flush();
 fos.close();

java base64 apache-nifi

share|improve this question

edited Mar 26 at 10:27

nbalodi

asked Mar 26 at 9:59

nbalodinbalodi

2277 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Note that a PDF file is not a plain text file; if you treat it as if it is plain text, you'll get unreadable, random looking characters.
  
  – Jesper
  Mar 26 at 10:09
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I tried same as ConvertedJPGPDF.txt , not getting expected PDF. How can I achieve it?
  
  – nbalodi
  Mar 26 at 10:13
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You should not treat a PDF file as if it is a text file, that will not work.
  
  – Jesper
  Mar 26 at 10:30
  

  
  
  
  

add a comment | 

I am getting PDF content which is Base 64 encoded. I tried to decode it using NIFI with Processor Base64EncodeContent. The Decoded file I am sending in mail. Below is small sample of output coming in mail.

enter image description here

"No data should be available in . ¹ Check if sent . . All documents are sent as pdf to* 9 : ’ ³: > < âA m¬‘²@%é‚ÇŽÇ¢|ÀÈ™$Éز§Uû÷LÒTB¨ l,îåù˜$â´º?6N¬JC¤ŒÃ°‰_Ïg -æ¿;ž‰ìÛÖYl`õ?èÓÌ[ ÿÿ PK"

How to extract the data in PDF as sent by third party?

I have tried to decode it using JAVA code and there also its failing. Not able to open the PDF, junk characters coming there too.

ConvertedJPGPDF.pdf file used below contains Base64 encoded String.

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = 
 Files.readAllBytes(Paths.get(filePath+originalFileName));


 // byte[] decodedBytes = Base64.getDecoder().decode(input_file);
 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);


 FileOutputStream fos = new FileOutputStream(filePath+newFileName);
 fos.write(decodedBytes1);
 fos.flush();
 fos.close();

java base64 apache-nifi

share|improve this question

edited Mar 26 at 10:27

nbalodi

asked Mar 26 at 9:59

nbalodinbalodi

2277 bronze badges

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = 
 Files.readAllBytes(Paths.get(filePath+originalFileName));


 // byte[] decodedBytes = Base64.getDecoder().decode(input_file);
 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);


 FileOutputStream fos = new FileOutputStream(filePath+newFileName);
 fos.write(decodedBytes1);
 fos.flush();
 fos.close();

share|improve this question

edited Mar 26 at 10:27

nbalodi

asked Mar 26 at 9:59

nbalodinbalodi

2277 bronze badges

share|improve this question

edited Mar 26 at 10:27

nbalodi

asked Mar 26 at 9:59

nbalodinbalodi

2277 bronze badges

asked Mar 26 at 9:59

nbalodinbalodi

2277 bronze badges

asked Mar 26 at 9:59

nbalodinbalodi

2277 bronze badges

1 Answer
1

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oldest

votes

1

You mentioned that the file contains base64 encoded string already.

ConvertedJPGPDF.pdf file used below contains Base64 encoded String.

So, you don't need to run this line:

byte[] encodedBytes = Base64.getEncoder().encode(input_file);

By doing so, you are trying to encode those bytes again.

Directly decode the input_file array and then save the obtained byte array into a .pdf file.

Update:

The ConvertedJPGPDF.pdf doesn't really have to be named .pdf. It's really a plain text file considering that it is base 64 encoded.

Anyway, the following piece of code is working for me:

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = Files.readAllBytes(Paths.get(filePath+originalFileName));

 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);

 Files.write(Paths.get(filePath+newFileName), decodedBytes1);

---

Hope this helps!

share|improve this answer

edited Mar 26 at 10:49

answered Mar 26 at 10:27

anacronanacron

4,57211 gold badge1717 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Done, but still not getting expected output.
  
  – nbalodi
  Mar 26 at 10:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  May be the 3rd party pdf is already corrupted. May be it has fonts that your system does not recognize and you're seeing gibberish.
  
  – anacron
  Mar 26 at 10:51
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  May be, 3rd Party is proving this data in xml tags as <pdfContent>.... Base64EncodedString... </pdfContent>
  
  – nbalodi
  Mar 26 at 12:00
  

  
  
  
  

add a comment | 

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1

You mentioned that the file contains base64 encoded string already.

ConvertedJPGPDF.pdf file used below contains Base64 encoded String.

So, you don't need to run this line:

byte[] encodedBytes = Base64.getEncoder().encode(input_file);

By doing so, you are trying to encode those bytes again.

Directly decode the input_file array and then save the obtained byte array into a .pdf file.

Update:

The ConvertedJPGPDF.pdf doesn't really have to be named .pdf. It's really a plain text file considering that it is base 64 encoded.

Anyway, the following piece of code is working for me:

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = Files.readAllBytes(Paths.get(filePath+originalFileName));

 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);

 Files.write(Paths.get(filePath+newFileName), decodedBytes1);

---

Hope this helps!

share|improve this answer

edited Mar 26 at 10:49

answered Mar 26 at 10:27

anacronanacron

4,57211 gold badge1717 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Done, but still not getting expected output.
  
  – nbalodi
  Mar 26 at 10:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  May be the 3rd party pdf is already corrupted. May be it has fonts that your system does not recognize and you're seeing gibberish.
  
  – anacron
  Mar 26 at 10:51
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  May be, 3rd Party is proving this data in xml tags as <pdfContent>.... Base64EncodedString... </pdfContent>
  
  – nbalodi
  Mar 26 at 12:00
  

  
  
  
  

add a comment | 

1

You mentioned that the file contains base64 encoded string already.

ConvertedJPGPDF.pdf file used below contains Base64 encoded String.

So, you don't need to run this line:

byte[] encodedBytes = Base64.getEncoder().encode(input_file);

By doing so, you are trying to encode those bytes again.

Directly decode the input_file array and then save the obtained byte array into a .pdf file.

Update:

The ConvertedJPGPDF.pdf doesn't really have to be named .pdf. It's really a plain text file considering that it is base 64 encoded.

Anyway, the following piece of code is working for me:

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = Files.readAllBytes(Paths.get(filePath+originalFileName));

 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);

 Files.write(Paths.get(filePath+newFileName), decodedBytes1);

---

Hope this helps!

share|improve this answer

edited Mar 26 at 10:49

answered Mar 26 at 10:27

anacronanacron

4,57211 gold badge1717 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Done, but still not getting expected output.
  
  – nbalodi
  Mar 26 at 10:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  May be the 3rd party pdf is already corrupted. May be it has fonts that your system does not recognize and you're seeing gibberish.
  
  – anacron
  Mar 26 at 10:51
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  May be, 3rd Party is proving this data in xml tags as <pdfContent>.... Base64EncodedString... </pdfContent>
  
  – nbalodi
  Mar 26 at 12:00
  

  
  
  
  

add a comment | 

You mentioned that the file contains base64 encoded string already.

ConvertedJPGPDF.pdf file used below contains Base64 encoded String.

So, you don't need to run this line:

byte[] encodedBytes = Base64.getEncoder().encode(input_file);

By doing so, you are trying to encode those bytes again.

Directly decode the input_file array and then save the obtained byte array into a .pdf file.

Update:

The ConvertedJPGPDF.pdf doesn't really have to be named .pdf. It's really a plain text file considering that it is base 64 encoded.

Anyway, the following piece of code is working for me:

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = Files.readAllBytes(Paths.get(filePath+originalFileName));

 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);

 Files.write(Paths.get(filePath+newFileName), decodedBytes1);

---

Hope this helps!

share|improve this answer

edited Mar 26 at 10:49

answered Mar 26 at 10:27

anacronanacron

4,57211 gold badge1717 silver badges2828 bronze badges

byte[] encodedBytes = Base64.getEncoder().encode(input_file);

 String filePath = "C:\Users\xyz\Desktop\";
 String originalFileName = "ConvertedJPGPDF.pdf";
 String newFileName = "test.pdf";

 byte[] input_file = Files.readAllBytes(Paths.get(filePath+originalFileName));

 byte[] decodedBytes1 = Base64.getMimeDecoder().decode(input_file);

 Files.write(Paths.get(filePath+newFileName), decodedBytes1);

share|improve this answer

edited Mar 26 at 10:49

answered Mar 26 at 10:27

anacronanacron

4,57211 gold badge1717 silver badges2828 bronze badges

answered Mar 26 at 10:27

anacronanacron

4,57211 gold badge1717 silver badges2828 bronze badges

answered Mar 26 at 10:27

anacronanacron

4,57211 gold badge1717 silver badges2828 bronze badges