Java converts images to Base64 and Base64 into image encoding and save locally; and Android to Base64 coded __

Source: Internet
Author: User
Tags base64

How to use:

The following IMG is taken over by Base64 encoded pictures

To store this picture.
String img=request.getparameter ("img");
System.out.print (img+ "= =");
Typeconverter.generateimage (IMG);

public class TypeConverter {//Picture into Base64 string public static string Getimagestr (string path) {//Convert picture file to byte array string, and
        It is BASE64 encoded to handle String Imgfile = path;//The picture to be processed inputstream in = null;
        byte[] data = null;
            Reads the picture byte array try {in = new FileInputStream (imgfile);
            data = new byte[in.available ()];
            In.read (data);
        In.close ();
        catch (IOException e) {e.printstacktrace ();
        ///To byte array Base64 encoding Base64encoder encoder = new Base64encoder (); return Encoder.encode (data)//Returns BASE64 encoded byte array string}//base64 string into a picture public static Boolean generateimage (Strin
    	G imgstr) {System.out.print ("has received the method of converting bytecode into pictures");
        
        Base64 decodes a byte array string and generates a picture if (imgstr = = null)//image data is null return false;
        Base64decoder decoder = new Base64decoder (); try {//base64 decoding byte[] B = Decoder.decodebuffer (IMGSTR); for (int i=0;i<b.length;++i) {if (b[i]<0) {//adjust exception data b
                [i]+=256;
            }///generate JPEG picture String imagepath= "C:";
            System.currenttimemillis () String Imgfilepath = "c:\\inetpub\\wwwroot\\school_mart.jpg";//newly generated picture
            OutputStream out = new FileOutputStream (Imgfilepath);
            Out.write (b);
            Out.flush ();
            Out.close ();
        return true;
        catch (Exception e) {return false;
 }
    }
}


Android-side code: converting Bitmap to Base64

  /**
     * Converts bitmap to Base64 string
     * @param bit
     * @return
     /Public
    string bitmap2strbybase64 by Base32 ( Bitmap bit) {
        bytearrayoutputstream bos=new bytearrayoutputstream ();
        Bit.compress (Bitmap.CompressFormat.JPEG, BOS),//parameter 100 means uncompressed
        byte[] Bytes=bos.tobytearray ();
        Return base64.encodetostring (bytes, base64.default);
    }


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