Question

I want to load and display an image from my database within a PyQt5 window. But my script doesn't work.

    connection = None
    result = None

    try:
        connection = pymysql.connect(host = 'localhost',
                                     user = 'root',
                                     db = 'mydatabase',
                                     cursorclass = pymysql.cursors.DictCursor)
        try:
            with connection.cursor() as cursor:
                sql = "SELECT image FROM mydatabase"
                cursor.execute(sql)
                result = cursor.fetchall() #Get all values from the image column

                image = QImage()
                image.load(result[0]['Image']) #Load image from the first row

                label = QLabel()
                label.setPixmap(QPixmap.fromImage(image))
                self.grid.addWidget(label, 0, 0)
        finally:
            connection.close()

What should I do to display the image?

Answer 1

load方法只接受文件路径或IODevice，而您似乎将原始图像数据作为字节传递。

试试这个，而不是：

image = QImage.fromData(result[0]['Image'])

要保存图像，请执行以下操作：

image.save('image.png')

Python pymysql: How to load an image from database?

1 个答案: