package com.education.util; import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder; import java.io.*; /**
* Created by jn-dinggao on 2016/2/4.
*/
public class Base64Util { // 将图片文件转化为字节数组字符串,并对其进行Base64编码处理
public static String GetImageStr(String imgFilePath) {
byte[] data = null; // 读取图片字节数组
try {
InputStream in = new FileInputStream(imgFilePath);
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();
return encoder.encode(data);// 返回Base64编码过的字节数组字符串
} /**
* base64编码转图片
* imgStr base64编码
* imgFilePath 图片保存路径+名称
* @param imgStr
* @param imgFilePath
* @return
*/
public static boolean GenerateImage(String imgStr, String imgFilePath) {
if (imgStr == null) // 图像数据为空
return false;
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(imgFilePath);
out.write(bytes);
out.flush();
out.close();
return true;
} catch (Exception e) {
return false;
}
}
}