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BASE64

 
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HI,
i get the Base64 type image.i want to save it on server using jsp.
to convert this in ordinary graphics file which classes can i use for encoding and decoding.
 
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base-64 is not an image type - it's an encoding used to convert binary content into ASCII. The Apache Commons Codec library has routines for en- and decoding base-64.
 
Ratan Pawar
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How i can save this base64 string as a image.
 
Ulf Dittmer
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Where you successful running the base-64 decoder? Is the result a valid image file?
 
Ratan Pawar
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yes,decoding is successful.
now i want to save it as image file.what should i use for it.
i tried imageio but how pass correct parameter or what other things for saving it as image.
 
Ulf Dittmer
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What did the base-64 decoder hand back to you - a byte array? If so, you can use a FileOutputStream to write the bytes to a file.
 
Ratan Pawar
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Yes its working.
Thank you very much Sir.
 
Ratan Pawar
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Sir,Now i can show this saved images to the client.
I used FileInputReader for read the file.
and then encode it.is required to encode now?
Because now we want to show only that saved image.
when i put it ac image it not show the image.
i also used ListFiles to read the names of file in folder.
it is successful but it not shows as a image.
what to do?
 
Ulf Dittmer
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I used FileInputReader for read the file. and then encode it.is required to encode now?


An encoded image can't be displayed, so, no, encoding is not only not required, it is harmful, because it prevents the image from being used elsewhere.

i also used ListFiles to read the names of file in folder.
it is successful but it not shows as a image.


What is "it"? A web page? An AWT/Swing component? Is this still a version of the image that is encoded? I thought you said you were successful decoding it.
 
Ratan Pawar
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Sir,i want do display image in web page.
I did it successfully.I read the saved file name from the directory
and then it filename give as source for the image.its working.
No need of Decoding.
if i want to write it on canvas then i think decoding is required.
Thank you Sir.
 
Ulf Dittmer
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if i want to write it on canvas then i think decoding is required.


Once you decode the image and store it, it is no -obviously- no longer encoded. It has to be, because it couldn't be displayed otherwise. So I don;t understand why you think another decoding step might be necessary.
 
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