将字节数组转换为图像（png）答案

【问题标题】：convert byte array into image(png)将字节数组转换为图像（png）
【发布时间】：2016-03-23 09:50:53
【问题描述】：

我有一个 byte[]，它是通过从某个表中获取数据返回的。我想将此字节数组转换为 png 图像。注意：我没有像其他地方的类似示例那样来自图像的字节数组。

 byte[] bytes = modelDashboardService.exportMyQueuePNG("pp83900","1");

InputStream in = new ByteArrayInputStream(bytes);

BufferedImage bImageFromConvert = ImageIO.read(in);//ImageIO.read(url);//

if(bImageFromConvert != null){
  ImageIO.write(bImageFromConvert, "png", new File(
  "D:/test1.png"));

}

My byte[] is not null but my BufferedImage is null .

请帮忙。

字节[] 是： [37、80、68、70、45、49、46、55、10、37、-30、-29、-49、-45、10、51、32、48、32、111、98、106、10 , 60, 60, 47, 76, 101, 110, 103, 116, 104, 32, 52, 57, 50, 47, 70, 105, 108, 116, 101, 114, 47, 70, 108, 97, 116 , 101, 68, 101, 99, 111, 100, 101, 62, 62, 115, 116, 114, 101, 97, 109, 10, 120, -100, -115, -107, 65, 111, -29 , 32, 16, -123, -17, -2, 21, 115, -20, 30, 66, -127, 1, -116, -113, -39, -124, -83, -68, 90, -59, -87, 67, -38, -12, -76, 90, -75, 77, -91, 85, -93, -86, -67, -12, -17, -17, 24, - 127、55、-119、113、-99、67、34、-20、-9、-15、24、63、6、-101、-125、-128、-103、0、14、-70、 -46, -12, -1, 120, 40, -34, -117, -17, -66, -96, 107, -91, -63, 63, -47, 96, -90, 120, 55, 112、-66、-72、37、-115、51、11、-35、79、-64、-57、75、97、21、-109、-96、-71、6、-93、-104 , -48, 64, -32, -57, 115, -79, 63, 101, -124, -78, 12, 117, -96, 80, 50, 110, 71, 40, -53, -103, -62、64、9、73、19、-14、20、114、-53、74、-100、90、17、75、-55、108、53、69、41、44、25、87、83 , -108, -26, -126, -119, 73, 4 7、109、52、-61、73、47、35、43、-90、39、-95、10、-103、-55、81、93、-8、18、126、-46、-122、 -36, -48, 12, 13, -97, -7, -12, 55, 81, 28, -119, -67, -105, -13, 121, 39, 121, 36, -24, 94, -50、39、-100、-28、-111、104、-109、60、-110、105、47、-25、-61、76、114、62、-59、94、-51、-57 , -73, -95, -8, -88, -85, -69, 62, -25, -108, -77, 53, 93, 114, 40, -64, 31, -118, -21, 31 , -126, 34, 0, -65, 47, -82, -36, -50, 45, -74, -66, -2, -26, -1, -98, -111, 84, 45, - 111, 87, -51, 10, -4, -61, -38, 117, 58, -99, -122, 35, 63, -95, 121, 8, 123, -32, 88, 47, 51, -80、-107、33、-6、1、-68、104、86、-66、109、126、-63、124、-31、-21、-69、-38、63、12、-89 , -94, -32, 97, 91, 6, 83, 55, 126, -34, -6, -29, -70, 19, 25, 43, 95, -50, 125, -90, 108, 44 , 85, -40, -58, -127, -35, 114, -21, 78, -52, 34, -9, -91, -103, -62, 42, 108, -6, -40, 99 , 29, 27, 38, 54, 26, -34, -76, -51, 118, -3, -69, -55, 17, -68, 12, -60, -3, -54, -75, -61, 37, 53, -57, -48, 72, -105, 44, -103, -40, -72, -92, -37, -47, 78, 55, 57, 79, 83, -122, -18, -69, -56, 51, -78, -47, -77, 117, 119, -75, -69, 119, 57, 34, 62, 70, 102, 61, - 125, -126, -27, 58, 39, -77, 92, 68, -113, 67, -53, -8, 85, 58, 28, -128, -117, 12, 35, 27, 29, -87, -119, -4, 118, 19, 45, -33, 51, 47, 28, -28, -35, 113, 58, 20, 88, -123, -63, -21, -1, -9, 65, 21, -107, 82, -97, 41, -15, 6, 41, -74, 87, 110, 79, -21, 53, -52, 32, 72, 115, 86, - 18, -6, -49, -53, 51, -55, 111, -5, 84, 15, -92, 25, -99, -91, 84, -12, -91, -126, -21, -35, 94, -64, -14, 13, 78, 12, -93, 76, 110, -40, -35, -96, 47, -41, 44, 13, -56, -26, 31, 113, 64, 107, -53, 10, 101, 110, 100, 115, 116, 114, 101, 97, 109, 10, 101, 110, 100, 111, 98, 106, 10, 53, 32, 48 , 32, 111, 98, 106, 10, 60, 60, 47, 80, 97, 114, 101, 110, 116, 32, 52, 32, 48, 32, 82, 47, 67, 111, 110, 116 , 101, 110, 116, 115, 32, 51, 32, 48, 32, 82, 47, 84, 121, 112, 101, 47, 80, 97, 103, 101, 47, 82, 101, 115, 111 , 117, 114, 99, 101, 115, 60, 60, 47, 88, 79, 98, 106, 101, 99, 116, 60, 60, 47, 88, 102, 49, 32, 49, 32, 48 , 32, 82, 62, 62, 47, 70, 111, 110, 116, 60, 60, 47, 70, 49, 32, 50, 32, 48, 32, 82, 62, 62, 62, 62, 47, 77, 101, 100, 105, 97, 66, 111, 120, 91, 48, 32, 48, 32, 53, 57, 53, 32, 56, 52, 50, 93, 47, 82, 111, 116, 97, 116, 101, 32, 57, 48, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 50, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 66, 97, 115, 101, 70, 111, 110, 116, 47, 72, 101, 108, 118, 101, 116, 105, 99, 97, 47, 84, 121, 112, 101, 47, 70, 111, 110, 116, 47, 69, 110, 99, 111, 100, 105, 110, 103, 47, 87, 105, 110, 65, 110, 115, 105, 69, 110, 99, 111, 100, 105, 110, 103, 47, 83, 117, 98, 116, 121, 112, 101, 47, 84, 121, 112, 101, 49, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 49, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 84, 121, 112, 101, 47, 88, 79, 98, 106, 101, 99, 116, 47, 82, 101, 115, 111, 117, 114, 99, 101, 115, 60, 60, 47, 70, 111, 110, 116, 60, 60, 47, 70, 49, 32, 50, 32, 48, 32, 82, 62, 62, 62, 62, 47, 83, 117, 98, 116, 121, 112, 101, 47, 70, 111, 114, 109, 47, 66, 66, 111, 12 0, 91, 48, 32, 48, 32, 51, 48, 32, 49, 54, 93, 47, 77, 97, 116, 114, 105, 120, 32, 91, 49, 32, 48, 32, 48, 32, 49, 32, 48, 32, 48, 93, 47, 76, 101, 110, 103, 116, 104, 32, 52, 52, 47, 70, 111, 114, 109, 84, 121, 112, 101, 32, 49, 47, 70, 105, 108, 116, 101, 114, 47, 70, 108, 97, 116, 101, 68, 101, 99, 111, 100, 101, 62, 62, 115、116、114、101、97、109、10、120、-100、43、-28、114、10、-31、50、84、48、0、66、67、5、35、32、12 , -55, -27, -46, 119, 51, 84, 48, 4, -78, -46, -72, 52, 12, 53, 67, -78, -72, 92, 67, -72, 2, -71, 0, -88, 92, 8, 34, 10, 101, 110, 100, 115, 116, 114, 101, 97, 109, 10, 101, 110, 100, 111, 98, 106, 10, 52, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 84, 121, 112, 101, 47, 80, 97, 103, 101, 115, 47, 67, 111, 117, 110, 116, 32, 49, 47, 75, 105, 100, 115, 91, 53, 32, 48, 32, 82, 93, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 54, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 84, 121, 112, 101, 47, 67, 97, 116, 97, 108, 111, 103, 47、80、97、103、101、115、32、52、32、48、 32, 82, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 55, 32, 48, 32, 111, 98, 106, 10, 60, 60, 47, 80, 114, 111, 100, 117, 99, 101, 114, 40, 105, 84, 101, 120, 116, -82, 32, 53, 46, 53, 46, 53, 32, -87, 50, 48, 48, 48, 45, 50, 48, 49, 52, 32, 105, 84, 101, 120, 116, 32, 71, 114, 111, 117, 112, 32, 78, 86, 32, 92, 40, 65, 71, 80, 76, 45, 118, 101, 114, 115, 105, 111, 110, 92, 41, 41, 47, 77, 111, 100, 68, 97, 116, 101, 40, 68, 58, 50, 48, 49, 54, 48, 51, 50, 51, 49, 54, 51, 54, 53, 55, 43, 48, 53, 39, 51, 48, 39, 41, 47, 67, 114, 101, 97, 116, 105, 111, 110, 68, 97, 116, 101, 40, 68, 58, 50, 48, 49, 54, 48, 51, 50, 51, 49, 54, 51, 54, 53, 55, 43, 48, 53, 39, 51, 48, 39, 41, 62, 62, 10, 101, 110, 100, 111, 98, 106, 10, 120, 114, 101, 102, 10, 48, 32, 56, 10, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 32, 54, 53, 53, 51, 53, 32, 102, 32, 10, 48, 48, 48, 48, 48, 48, 48, 56, 48, 54, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 48、55、49、56、32、48、48、48、48、48、32、110 , 32, 10, 48, 48, 48, 48, 48, 48, 48, 48, 49, 53, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48 , 48, 48, 48, 49, 48, 50, 50, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 48, 53 , 55, 52, 32, 48, 48, 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 49, 48, 55, 51, 32, 48, 48 , 48, 48, 48, 32, 110, 32, 10, 48, 48, 48, 48, 48, 48, 49, 49, 49, 56, 32, 48, 48, 48, 48, 48, 32, 110 , 32, 10, 116, 114, 97, 105, 108, 101, 114, 10, 60, 60, 47, 82, 111, 111, 116, 32, 54, 32, 48, 32, 82, 47, 73 , 68, 32, 91, 60, 98, 101, 55, 48, 97, 57, 52, 52, 57, 97, 102, 57, 50, 56, 55, 97, 54, 48, 100, 99, 53 , 98, 57, 97, 48, 57, 48, 101, 49, 50, 49, 54, 62, 60, 98, 101, 55, 48, 97, 57, 52, 52, 57, 97, 102, 57 , 50, 56, 55, 97, 54, 48, 100, 99, 53, 98, 57, 97, 48, 57, 48, 101, 49, 50, 49, 54, 62, 93, 47, 73, 110 , 102, 111, 32, 55, 32, 48, 32, 82, 47, 83, 105, 122, 101, 32, 56, 62, 62, 10, 37, 105, 84, 101, 120, 116, 45 , 53, 46, 53, 46, 53, 10, 115, 116, 97, 114, 116, 120, 114, 101, 102 , 10, 49, 50, 55, 53, 10, 37, 37, 69, 79, 70, 10]

【问题讨论】：

您在bytes 中拥有什么类型的数据？
“我没有类似示例中的字节数组”是什么意思？有什么不同？
@lisa p 作为从另一个图像中获取的字节数组

标签： java

【解决方案1】：

试试下面的代码：

 private void saveImage(String path, final byte[] bytes) throws IOException {
        final File file = new File(path);
        final FileOutputStream fileOut = new FileOutputStream(file );
        fileOut.write(bytes);
        fileOut.flush();
        fileOut.close();
    }

【讨论】：

图像已创建但无法打开它，因为它已损坏、损坏或太大:( 基本上我想将整个表格放入图像中。
数据损坏的可能性只有一种

【解决方案2】：

根据ImageIO.read(InputStream input)的文档：

返回一个BufferedImage，作为解码提供的InputStream 的结果，其中ImageReader 从当前注册的那些中自动选择。 InputStream 包裹在 ImageInputStream 中。如果没有注册的ImageReader 声称能够读取结果流，则返回null。

我的最佳猜测是您从表中检索的字节数组不是来自（有效）图像。

【讨论】：

【解决方案3】：

使用它：

File file = new File(getFilesDir()+"/file.png");
FileOutputStream fos = new FileOutputStream(file);

//write your byteArray here
fos.write(byteArray);
fos.flush();
fos.close();

看到这个link

【讨论】：

它运行没有任何错误，创建图像但无法打开它，因为它已损坏、损坏或太大
查看此link，但使用 .png 而不是 .jpg。也许它可以帮助你。