public classImageUtil {/*** 本地图片转换成base64字符串
*@paramimgFile
* 图片本地路径
*@return
*/
public static String ImageToBase64ByLocal(String imgFile) {//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
InputStream in = null;byte[] data = null;//读取图片字节数组
try{
in= newFileInputStream(imgFile);
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 = newBASE64Encoder();return encoder.encode(data);//返回Base64编码过的字节数组字符串
}/*** base64字符串转换成图片
*@paramimgStr
* base64字符串
*@paramimgFilePath
* 图片存放路径
*@return
*/
public static boolean Base64ToImage(String imgStr, String imgFilePath) { //对字节数组字符串进行Base64解码并生成图片
if (StringUtil.isNullOrEmpty(imgStr)) { //图像数据为空
return false;
}
BASE64Decoder decoder= newBASE64Decoder();try{//Base64解码
byte[] b =decoder.decodeBuffer(imgStr);for (int i = 0; i < b.length; ++i) {if (b[i] < 0) {//调整异常数据
b[i] += 256;
}
}
OutputStream out= newFileOutputStream(imgFilePath);
out.write(b);
out.flush();
out.close();return true;
}catch(Exception e) {return false;
}
}public static byte[] Base64ToByte(String imgStr) {if (StringUtil.isNullOrEmpty(imgStr)) { //图像数据为空
return null;
}
BASE64Decoder decoder= newBASE64Decoder();try{//Base64解码
byte[] b =decoder.decodeBuffer(imgStr);for (int i = 0; i < b.length; ++i) {if (b[i] < 0) {//调整异常数据
b[i] += 256;
}
}returnb;
}catch(Exception e) {return null;
}
}public staticInputStream Base64ToInputStream(String imgStr) {byte[] b =Base64ToByte(imgStr);if(null ==b) {return null;
}
ByteArrayInputStream bais= newByteArrayInputStream(b);returnbais;
}public staticString handleBase64Str(String base64Str) {
String markStr= "base64,";int indexOf =base64Str.indexOf(markStr);if(indexOf != -1) {return base64Str.substring(indexOf +(markStr.length()));
}returnbase64Str;
}
}