How to convert an Image to base64 string in java

Question

It may be a duplicate but i am facing some problem to convert the image into Base64 for sending it for Http Post  I have tried this code but it gave me wrong encoded string    public static void main String   args                File f    new File  C  Users SETU BASAK Desktop a jpg                 String encodstring   encodeFileToBase64Binary f                System out println encodstring                    private static String encodeFileToBase64Binary File file               String encodedfile   null              try                   FileInputStream fileInputStreamReader   new FileInputStream file                   byte   bytes   new byte  int file length                     fileInputStreamReader read bytes                   encodedfile   Base64 encodeBase64 bytes  toString                  catch  FileNotFoundException e                       TODO Auto-generated catch block                 e printStackTrace                  catch  IOException e                       TODO Auto-generated catch block                 e printStackTrace                               return encodedfile              Output   B 677327b6   But i converted this same image into Base64 in many online encoders and they all gave the correct big Base64 string   Edit  How is it a duplicate   The link which is duplicate of mine doesn t give me solution of converting the string what i wanted   What am i missing here

User · Answer

I think you might want   String encodedFile   Base64 getEncoder   encodeToString bytes

User · Answer

this did it for me  you can vary the options for the output format to Base64 Default whatsoever       encode base64 from image ByteArrayOutputStream baos   new ByteArrayOutputStream    imageBitmap compress Bitmap CompressFormat PNG  100  baos   byte   b   baos toByteArray    encodedString   Base64 encodeToString b  Base64 URL SAFE   Base64 NO WRAP

User · Answer

The problem is that you are returning the toString   of the call to Base64 encodeBase64 bytes  which returns a byte array  So what you get in the end is the default string representation of a byte array  which corresponds to the output you get   Instead  you should do   encodedfile   new String Base64 encodeBase64 bytes    UTF-8

[java] How to convert an Image to base64 string in java?

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