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Java PNG变黑

[英]Java png comes out black

I have a image that i pull from a DB when i try to print it out my receipt printer its black. 我有一张试图从黑色收据打印机中打印出来的图像,是从数据库中提取的。 I think its something to do with the compress but can't figure out how to add that im a beginner at Java. 我认为这与压缩有关,但无法弄清楚如何在Java初学者中添加它。 Thank you 谢谢

String imagex = "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";

  public Bitmap StringToBitMap(String encodedString){
    try {
        byte [] encodeByte=Base64.decode(encodedString, Base64.DEFAULT);
        Bitmap bitmap=BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length);
        return bitmap;
    } catch(Exception e) {
        e.getMessage();
        return null;
    }
}
    Bitmap bm = StringToBitMap(imagex);
    StarBitmap starbitmap = new StarBitmap(bm, true, 200);
    commands.add(starbitmap.getImageEscPosDataForPrinting(false,true));

In most cases PNGs are black (transparent areas) due to rendering problems of PC not because of server side error. 在大多数情况下,由于PC的渲染问题而不是由于服务器端错误,PNG为黑色(透明区域)。 Some times PNGs are rendering in invert color beacuse of the color depth of the PNG is low (PNG-8 etc). 有时,由于PNG的颜色深度较低(PNG-8等),所以PNG呈现反转颜色。 I experienced in many time that high quality PNGs are also displaying with shady colors and edges (PNG-24) in many browsers as well. 我经历了很多时间,在许多浏览器中,高质量的PNG也会以阴影和边缘(PNG-24)显示。 Solutions for PNG errors: PNG错误的解决方案:

  • Try with different images with different image formats (JPEG, GIF etc) 尝试使用具有不同图像格式(JPEG,GIF等)的不同图像
  • Better you reformat the image with a image editing tool (Photoshop is the best) and export the image as a PNG and then store in the DB. 最好使用图像编辑工具(最好是Photoshop)将图像重新格式化,然后将图像导出为PNG,然后存储在数据库中。
  • Try to display the same out put in different environment (Browser or a another PC) 尝试在不同的环境(浏览器或另一台PC)中显示相同的输出

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