[java]图片文件转为BASE64编码

<span style="font-family:Courier New;"><pre name="code" class="java">package junary;

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;

public class ImageToBase64Test {

public static void main (String[] args) {
String returnedString = imageToBase64("C://Users//dean//Desktop//1.jpg");
System.out.println(returnedString);
base64ToImage(returnedString);
}

public static String imageToBase64(String imageUrl) {
byte[] data = null;
try {
InputStream in = new FileInputStream(imageUrl);
data = new byte[in.available()];
in.read(data);
in.close();
} catch (IOException e) {
e.printStackTrace();
}

// 对字节数组Base64编码
BASE64Encoder encoder = new BASE64Encoder();
// 返回Base64编码过的字节数组字符串
return encoder.encode(data);
}

public static void base64ToImage(String imageString){
BASE64Decoder decoder = new BASE64Decoder();
try {
//Base64解码
byte[] b = decoder.decodeBuffer(imageString);
//新生成的图片
String imageFilePath = "C://Users//dean//Desktop//2.jpg";
OutputStream out = new FileOutputStream(imageFilePath);
out.write(b);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}

}
</span>