How do I convert this array:
int[] ints = { 233, 154, 24, 196, 40, 203, 56, 213, 242, 96, 133, 54, 120, 146, 46, 3 };
To this string?
String base64Encoded = "6ZoYxCjLONXyYIU2eJIuAw==";
Usage:
String base64Encoded = ConvertToBase64(int[] ints);
(I'm asking this questions because byte in Java is signed, but byte in C# is unsigned)
The problem can be broken down into 2 simple steps: 1. Convert the int array to a byte array. 2. Encode the byte array to base4.
Here's one way to do that:
public static String convertToBase64(int[] ints) {
ByteBuffer buf = ByteBuffer.allocate(ints.length);
IntStream.of(ints).forEach(i -> buf.put((byte)i));
return Base64.getEncoder().encodeToString(buf.array());
}
A more old school approach:
public static String convertToBase64(int[] ints) {
byte[] bytes = new byte[ints.length];
for (int i = 0; i < ints.length; i++) {
bytes[i] = (byte)ints[i];
}
return Base64.getEncoder().encodeToString(bytes);
}
int get converted to a signed byte in your examples? That would generate a different string. Please see my requirements.
int array to a signed byte array. (see the comment I added above) My int array has unsigned values. Your code will render a different base64 string than what I specified in my question. Did you test this code?int to byte is the correct interpretation of your data depends on what your data represents. Since you have yet to specify that, I took a guess and verified the result by testing. I guess it's my turn to ask: did you test this code?