Can we convert a byte array into an InputStream in Java? I have been looking on the internet but couldn't find it.
I have a method that has an InputStream as argument.
The InputStream cph
I have is base64 encoded so I had to decode it using
BASE64Decoder decoder = new BASE64Decoder(); byte[] decodedBytes = decoder.decodeBuffer(cph);
Now how do I convert decodedBytes
again to InputStream
?
Using Apache Commons IO to convert byte [] to InputStream First, we have to create a String object from our byte array, then use IOUtils. toInputStream to convert it into InputStream . Note that converting from String to InputStream requires encoding.
In order to convert a byte array to a file, we will be using a method named the getBytes() method of String class. Implementation: Convert a String into a byte array and write it in a file. Example: Java.
Use ByteArrayInputStream
:
InputStream is = new ByteArrayInputStream(decodedBytes);
If you use Robert Harder's Base64 utility, then you can do:
InputStream is = new Base64.InputStream(cph);
Or with sun's JRE, you can do:
InputStream is = new com.sun.xml.internal.messaging.saaj.packaging.mime.util.BASE64DecoderStream(cph)
However don't rely on that class continuing to be a part of the JRE, or even continuing to do what it seems to do today. Sun say not to use it.
There are other Stack Overflow questions about Base64 decoding, such as this one.
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