Java implements a conversion between a picture and a base64 string

   Java implements a conversion between a picture and a base64 string


Packagecom.zxc.testjava.ant;ImportJava.io.FileInputStream;ImportJava.io.FileOutputStream;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.OutputStream;ImportSun.misc.BASE64Decoder;ImportSun.misc.BASE64Encoder; Public classTestchangeimage { Public Static voidMain (string[] args) {String strimg=Getimagestr (); System.out.println (STRIMG); Generateimage (strimg);}//Convert images into base64 strings Public StaticString Getimagestr () {//Converts a picture file into a byte array string and Base64 it for encodingString imgfile = "C:/users/star/desktop/test.png";//pictures to be processedInputStream in =NULL;byte[] data =NULL;//reading a picture byte arrayTry{ in=NewFileInputStream (imgfile);d ATA=New byte[In.available ()];in.read (data); In.close ();} Catch(IOException e) {e.printstacktrace ();}//Base64 encoding of byte arraysBase64encoder encoder =NewBase64encoder ();returnEncoder.encode (data);//returns a BASE64 encoded byte array string}//base64 strings into pictures Public Static BooleanGenerateimage (String imgstr) {//Base64 decoding a byte array string and generating a pictureif(Imgstr = =NULL)//image data is emptyreturn false; Base64decoder Decoder=NewBase64decoder ();Try {//Base64 decodingbyte[] B =Decoder.decodebuffer (IMGSTR); for(inti = 0; i < b.length; ++i) {if(B[i] < 0) {//Adjust Exception DataB[i] + = 256;}}//Create a JPEG pictureString Imgfilepath = "C:/users/star/desktop/test22.png";//the newly generated pictureOutputStream out =NewFileOutputStream (Imgfilepath); Out.write (b); Out.flush (); Out.close ();return true;} Catch(Exception e) {return false;}}}

Java implements a conversion between a picture and a base64 string