Base64 converts files and strings)

Package com. ysj;

Import java. Io. fileinputstream;
Import java. Io. fileoutputstream;
Import java. Io. ioexception;
Import java. Io. inputstream;
Import java. Io. outputstream;

Import sun. Misc. base64decoder;
Import sun. Misc. base64encoder;

/**
* Applicable to files in most formats
* @ Author Administrator
*
*/
Public class test {
Public static void main (string [] ARGs ){
Test T = new test ();
// String STR = T. getimagestr ("D:/My Documents/scriptxreg.zip ");
// String STR = T. getimagestr ("D:/My Documents/ip.jpg ");
String STR = T. getimagestr ("D:/My Documents/ ");
System. Out. println (STR );
// Boolean flag = T. generateimage (STR, "d:/My Documents/scriptxreg.zip ");
// Boolean flag = T. generateimage (STR, "d:/My Documents/ip.jpg ");
Boolean flag = T. generateimage (STR, "d:/My Documents/ B. B .mp3 ");
System. Out. println (FLAG );
}
/**
* Convert the file into a byte array string and encode it with base64
* @ Param imgfile
* @ Return
*/
Public static string getimagestr (string imgfile ){
Inputstream in = NULL;
Byte [] DATA = NULL;
// Read the object byte array
Try {
In = new fileinputstream (imgfile );
Data = new byte [IN. Available ()];
In. Read (data );
In. Close ();
} Catch (ioexception e ){
E. printstacktrace ();
}
// Encode the byte array base64
Base64encoder encoder = new base64encoder ();
// Returns a base64 encoded byte array string.
Return encoder. encode (data );
}

/**
* Base64 Decoding Based on byte array strings and generating files
* @ Param imgstr
* @ Param savedimagepath
* @ Return
*/
Public static Boolean generateimage (string imgstr, string savedimagepath ){
// File byte array string data is empty
If (imgstr = NULL)
Return false;
Base64decoder decoder = new base64decoder ();
Try {
// Base64 Decoding
Byte [] B = decoder. decodebuffer (imgstr );
For (INT I = 0; I <B. length; ++ I ){
{// Adjust abnormal data
If (B [I] <0)
B [I] ++ = 256;
}
}
// Generate a file
// String sangimagestr = "D:/My Documents/ip.jpg"; // path of the file to be generated.
Outputstream out = new fileoutputstream (savedimagepath );
Out. Write (B );
Out. Flush ();
Out. Close ();
Return true;
} Catch (exception e ){
Return false;
}
}

}