从 Java 包中加载图像文件并不复杂。但是如果图片不是那么好,你可以将它包含在代码中。尝试下一个:
public static void main(String[] args) throws Exception {
String encodeImage =
"iVBORw0KGgoAAAANSUhEUgAAABQAAAAWCAYAAADAQbwGAAAABHNCSVQICAgIfAhkiAAAAilJREFU\n" +
"OI2llE1IVGEUhp+Z0AhkHPpzZspGN4kmltUYYmKTJC0kkgQxzEhhIsp+sFUtomUg06IiCoICoU3K\n" +
"UCTE3dQmgkpoiGyMFk2CMCEtpFnYyNvCcex273UudFbf5bzn4bznHK5HkigS375/pbRkDcFAVTEp\n" +
"yEWcHzorl1K5UgEClJr+/P/AwaMdBaCbLosq/oYB2t/auqreky+yjTKfh1/ztnN33Il3tYWZYOUr\n" +
"z/7eXucip9ZP9PUUbG4HKRBTQ2mZAAX9zpNyzER2N5iWcAkkLmicnQL08NGobZ2t5cTTcd5OJhkA\n" +
"uH+awRY/IcIMYNBFPQDp2Yx7y9tA7xckwn6JJp0hrBvs0kuOKEtA0fgVHe7o1L2rw0Us53LqOXlc\n" +
"aysql5IV/iXbtGueLv2mVoCef0lJWhSg29fO2QNvjtzSoaYt2lEVVHNztCDoG70rKvN3uGer7rx+\n" +
"slIMenBxWC1Bjxk4cn1ImzcEJEm9bXv17M2kxcqnhazVXn5il0/1F95egA/TGcrDVQA8fvWOzn2N\n" +
"llnXlqxzPL2NjRFqNq03L6U9ekCAvF6vpROn+DEzI0A19fXWGRqGIUAfk0nXwGXbx7q7zcBEIuH6\n" +
"b2IHBNQWjZo7nJiYsAXGYjHV1dUpFAopHo87AlOplBm4nPxXWF1dLcMwNDY2Jp/PZ3KSTqctTZi+\n" +
"XuTnCOhgJFLUJqCfc3POQEnKzM5qMZdzhC3H1NSUslnrbf4BzetqQcm3njYAAAAASUVORK5CYII=\n";
byte[] imageData = new sun.misc.BASE64Decoder().decodeBuffer(encodeImage);
JLabel label = new JLabel(new ImageIcon(imageData));
JOptionPane.showMessageDialog(null, label);
}
这并不常见,但它有效。
您可以使用以下内容将图像转换为字符串。
public static void main(String[] args) throws Exception {
JFileChooser fileChooser = new JFileChooser();
int option = fileChooser.showOpenDialog(null);
if (option == JFileChooser.APPROVE_OPTION) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
Files.copy(Paths.get(fileChooser.getSelectedFile().toURI()), out);
sun.misc.BASE64Encoder encoder = new sun.misc.BASE64Encoder();
String base64Str = encoder.encode(out.toByteArray());
System.out.println(base64Str);
}
}