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我试图从数据库表中检索blob数据类型并在imageView中显示图像。这里是我选择的SQL语句:将BufferedImage转换为图像数据类型
public boolean retrieve(){
boolean success = false;
ResultSet rs = null;
DBController db = new DBController();
db.getConnection();
String dbQuery = "SELECT * FROM sm_product WHERE productName ='" + name +"'";
rs = db.readRequest(dbQuery);
try {
if(rs.next()){
desc = rs.getString("productDescription");
price = rs.getInt("productPrice");
quantity = rs.getInt("productQuantity");
dateStr = rs.getString("dateOfCreation");
category = rs.getString("productCategory");
Blob blob = rs.getBlob("productImage");
byte[] data = blob.getBytes(0, (int) blob.length());
image = ImageIO.read(new ByteArrayInputStream(data)); //Error here
success = true;
}
}
catch(Exception e){
e.printStackTrace();
}
db.terminate();
return success;
}
检索后,我想要在imageview中显示它。以下是代码:
panel.getMyImageView().setImage(product.getImage());
但是,我得到了不兼容的类型错误消息。我知道image = ImageIO.read(new ByteArrayInputStream(data));这行应该存储为BufferedImage,然后从那里缓慢转换为图像数据类型并在图像视图中显示。但经过2个小时的研究,我没有运气。有人可以帮我吗?
在此先感谢。
感谢阅读。我用其他解决方案解决了它 –