写的Base64 EN $ C $光盘镜像到文件 [英] Write Base64 encoded image to file

问题描述

如何写的Base64 EN $ C $光盘镜像到文件？

How to write Base64 encoded image to file?

我都设有$ C $光盘镜像到使用的Base64为字符串，首先我读文件，然后将其转换成字节数组再申请Base64编码存储图像串。
现在我的问题是如何去code吧。

I have encoded image into string using Base64 for that, First I read the file then convert it into byte array then apply Base64 encoding to store the image string. Now my problem is how to decode it.

byte dearr[] = Base64.decodeBase64(crntImage);
File outF = new File("c:/decode/abc.bmp");
BufferedImage img02 = ImageIO.write(img02, "bmp", outF); 

crntImage 是包含字符串重新映像presentation一个字符串变量。

crntImage is a string variable which contain string representation of image.

推荐答案

假设图像数据已经是你想要的，你不需要的图像格式的ImageIO 在所有 - 你只需要将数据写入到文件中：

Assuming the image data is already in the format you want, you don't need image ImageIO at all - you just need to write the data to the file:

// Note preferred way of declaring an array variable
byte[] data = Base64.decodeBase64(crntImage);
try (OutputStream stream = new FileOutputStream("c:/decode/abc.bmp")) {
    stream.write(data);
}

（我假设你正在使用Java 7的位置 - 如果没有，你需要写一个手动的try / finally语句来关闭流）

(I'm assuming you're using Java 7 here - if not, you'll need to write a manual try/finally statement to close the stream.)

如果该图像数据的不是的你想要的格式，你需要给更多的细节。

If the image data isn't in the format you want, you'll need to give more details.

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