Base64图片字符串生成本地图片

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.io.FileUtils;

public static void generateImage(String imgStr, String path) {
        try {
            byte[] b = Base64.decodeBase64(new String(imgStr).getBytes());
            for (int i = 0; i < b.length; ++i) {
                if (b[i] < 0) {//调整异常数据
                    b[i] += 256;
                }
            }
            String imgFilePath = path;//新生成的图片
            OutputStream out = new FileOutputStream(imgFilePath);
            out.write(b);
            out.flush();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }