Example: Java realizes the conversion between image and base64 string
- 2020-05-26 08:30:15
- OfStack
Without further details, I will directly post java to you to realize the conversion code between the image and base84 string. The specific code is as follows:
package cn.com;
import <a href="http://lib.csdn.net/base/javase" class='replace_word' title="Java SE The knowledge base " target='_blank' style='color:#df3434; font-weight:bold;'>Java</a>.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;
public class Base64Test
{
public static void main(String[] args)
{
String strImg = GetImageStr();
System.out.println(strImg);
GenerateImage(strImg);
}
// Convert the picture to base64 string
public static String GetImageStr()
{// Convert the image file into a byte array string and proceed with it Base64 Coding processing
String imgFile = "d://test.jpg";// Images to be processed
InputStream in = null;
byte[] data = null;
// Reads the image byte array
try
{
in = new FileInputStream(imgFile);
data = new byte[in.available()];
in.read(data);
in.close();
}
catch (IOException e)
{
e.printStackTrace();
}
// Pair byte array Base64 coding
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(data);// return Base64 A string of encoded byte arrays
}
//base64 String to image
public static boolean GenerateImage(String imgStr)
{ // To the byte array string Base64 Decode and generate images
if (imgStr == null) // The image data is empty
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 abnormal data
b[i]+=256;
}
}
// generate jpeg The picture
String imgFilePath = "d://222.jpg";// New generated image
OutputStream out = new FileOutputStream(imgFilePath);
out.write(b);
out.flush();
out.close();
return true;
}
catch (Exception e)
{
return false;
}
}
}