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java - 将Base64编码的图像字符串加载到JLabel中

转载 作者:行者123 更新时间:2023-12-01 08:16:00 27 4
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我让转换器在这里工作

公共类ImageProcessor {
公共静态无效值Base64TImage(String base64){
尝试{
byte [] btDataFile = new sun.misc.BASE64Decoder()。decodeBuffer(base64);
档案= new File(“yourFile.png”);
FileOutputStream osf = new FileOutputStream(of);
osf.write(btDataFile);
osf.flush();
} catch(IOException ex){
Logger.getLogger(ImageProcessor.class.getName())。log(Level.SEVERE,null,ex);
}

}
公共静态void main(String args []){
串的base64 =“iVBORw0KGgoAAAANSUhEUgAAAMcAAABqCAYAAAAIh0X2AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAEihJREFUeNrsXctvG8cZH9H0Q35ElOM4aWBYzKvoIa6YOMihKOD1vYDZHHsRBTRAewp96y30oUVvof + BZH3uIdSlPZbqpUAax1TTAmnqxKTi + FXFImW9qUdn6Blp + HF2d / Y9tL4PoGUud2dn5 /吨+ 32vm2xnZ3d0lSEhIg5Rl / 4yMjETW4O7yexP0T5F + LPrJ8b + Mmuyzs7XV7D5eanTbTxr0e + PU2zc7yAYkE2mEWY4owEFBcYn + qUhgcKWd7hbZ / KFNtpZWGGhq9FOlQGkhS5CeGXBQUEwywdYFBaTt9U2y8XCB7Gx02dc6 / ZQQJEhDDw4KjA84MMJZne0dsv5ggWyvrLGvbfopU4DcQPYgDR04KCjGOChKUXaGAYS6WeKrTQEyjSxCGhpwcGAw96cQR4dWW / eEi4UAQRoecMQNDOFirdy5SyP2vRQzc7GuI6uQUgHHO ++ 8o3Xy57MTn5KnadpYaXt1nazdfSgfsqz3ySyyC8lIy0GtxkdMiyfVsbXvH4kAnVGTWSucE0FKkjKa7tSVJIHB6OjZ0 / LXfNL3R0LytBw8zmCaO5d050D2iqV482g9kEyyHHYawGB05Pm + 2 + bQeiAZYzn4kpB6mh0Eqd02tRzjyDYkEyxHNe0OHs4912c9nnxx8QqyDSlVcFCrMUVinM / QpUPHj8FDJWQbUtqWo2JEBw9nSeboYfmQhWxDSg0cPNbIm9LJQ6PHoGt1CVmHlJblMCorpHCt0HogJQ8OqZLPnE4ePYLgQDLCchSN6 + ThLDxUQNYhpQGOkpEd7Q / Kc8g6pETBwV0qI7XySKYfxxiUIyVtOYz15UcGXSskpETBUTS2o4PgyCP7kOKknsRdvHhxGAPdvNRvJKR4wHHz5k0RbwyVNmb 9RkJKwq3C9CgSEoIDCckfODDARUIaRnCwN5IAaiL7kBAcakJwICE4GLG3siMhpQUOo2l3a7vv + 6m3b + JL3pAQHGybAiQkBIfSagy4VHVkHRKCg8UbGwOWo4GsQ0JwEGUaF8GBhODogWNtA90qpMRp742Hu8vvGbnn8tbyKlm / 9Z / 5UJN + XMH / OfW23sLDV89PsH0L / VYPtr + db82hiBxcygJXxbj1VQqXKojVKJEAb1ShoBL3sylQcI / CA + xWtU21HIBqftuggn2VW46iw3MyxcBefVpRtG8xcFCg3KKfMRSZA + ZWsZ2dPp + dSHRzGi2rsb5J1ubvEwDgvRdJW + / 7b3PxfwsDzzn + wpkRcM4EBwm0pHV67mUUmwPkVj0tGppomta5bnvJ1WoEKXai2n / AcijaadHzLDK4 / 6FFgTOFLtbBjDmMIbZxpsKlspO6PwVAhwKkSAYXOLJjqYKDu3cFon4hBuNjnfV / WIWSPt8l2v / ZtPsggyN0Z7b + u0Y2 // yYbN9eI1u3VgZ + P / T6MbKRPUnIm + Pk0Buj5PgFQo6dV + 8N0l1alneUJVxIEx0wyiBmQWzS / y6vHB + 8K5Ila2jEbMwKNWibMyEYNsXBWdQ4l / WtqhIy + tsif462k1Kk113WuMdHHIgzHudNEvftLCqin / Rc5tLWeTKkSYKvvu4lUQCf2h5GICd7ClmF2 + L7DSTdW8tk / eMHSkD0xRC31 + kN1wn5aoGsrpwg3z16kWw / f5K88CvS + 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AAMAAP61LDVrLLgAAAAASUVORK5CYII =“;
Base64TImage(base64);
}
}

该转换器创建一个文件并将其放在当前工作目录中。但是我不想创建文件,我希望此图像直接进入JLabel。那可能吗 ?

最佳答案

这是一个基于您的代码的示例:

byte[] btDataFile = new sun.misc.BASE64Decoder().decodeBuffer(base64);
BufferedImage image = ImageIO.read(new ByteArrayInputStream(btDataFile));
JOptionPane.showMessageDialog(null, "", "Image",
JOptionPane.INFORMATION_MESSAGE,
new ImageIcon(image));

我建议您避免使用 sun.misc.BASE64Decoder作为 sun.* packages are not part of the supported, public interface,这是 details。您可以轻松地从Apache Commons切换到 Base64,即:
byte[] btDataFile = Base64.decodeBase64(base64);
BufferedImage image = ImageIO.read(new ByteArrayInputStream(btDataFile));
JOptionPane.showMessageDialog(null, "", "Image",
JOptionPane.INFORMATION_MESSAGE,
new ImageIcon(image));

关于java - 将Base64编码的图像字符串加载到JLabel中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10327046/

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