在做测试的时候在windows下不要直接复制文件夹的地址!

package imagetest;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.awt.Image;
import java.awt.image.BufferedImage;import javax.imageio.ImageIO;import sun.misc.BASE64Decoder;/*** * @author Javert.Wang* @date 2019-03-23*/
public class ByteToImage {public static void main(String[] args) throws UnsupportedEncodingException {// 测试从Base64编码转换为图片文件String strImg = "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";GenerateImage(strImg, "D:\\zhiwen.jpg",30,30);}public static BufferedImage GenerateImage(String imgStr, String srcImgPath,int width,int height) {// 对字节数组字符串进行Base64解码并生成图片       BASE64Decoder decoder = new BASE64Decoder();try {// Base64解码byte[] bytes = decoder.decodeBuffer(imgStr);for (int i = 0; i < bytes.length; ++i) {if (bytes[i] < 0) {// 调整异常数据bytes[i] += 256;}}// 生成jpeg图片OutputStream out = new FileOutputStream(srcImgPath);out.write(bytes);out.flush();out.close();BufferedImage buffImg = null; try {File imagefile = new File(srcImgPath);BufferedImage image = ImageIO.read(imagefile);int tmpheight = image.getHeight();int tmpwidth = image.getWidth();if(width==0){width=tmpwidth;}if(height==0){height=tmpheight;}buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);  buffImg.getGraphics().drawImage(  image.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0,  0, null);ImageIO.write(buffImg, "JPEG", new File("D:\\zhiwen2.jpg"));  } catch (IOException e) {e.printStackTrace();}return buffImg;} catch (Exception e) {return null;}}
}

同时可能会遇到找不到BASE64Decoder这个类;就需要 点击项目–右键–buildpath–configure build path 进入如下页面

依次点击后出现

点击add

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