因为项目需求,必须要把图片存储到mysql数据库中.
首先 mysql数据库中的表 test 字段 photo 字段的类型是 mediumblob
执行插入数据的时候报: MySql.Data.MySqlClient.MySqlException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near
意思是sql语句不对!语法错误!
麻烦各位大侠帮帮忙,真的很急.谢谢了.困扰 很久了.一直找不到出点,所以才来找大家的!!!
---------------------------操作数据库的方法开始---------------------------
public static void AddPhoto(byte[] image)
{
//建立数据库连接
MySqlConnection conn = new MySqlConnection("server=127.0.0.1;user id=root;password=FLUser;database=banklgs");
conn.Open();
//设置命令参数
string insertStr = "insert into test(photo) values(?photo)";
MySqlCommand comm = new MySqlCommand();
comm.Connection = conn;
comm.CommandText = insertStr;
comm.CommandType = CommandType.Text;
//设置数据库字段类型MediumBlob的值为图片字节数组imageByte
MySqlParameter paraPhoto = new MySqlParameter("?photo", MySqlDbType.MediumBlob);
paraPhoto.Value = image;
comm.Parameters.Add(paraPhoto);
//执行命令
try
{
comm.ExecuteNonQuery();
}
catch (Exception ex)
{
ex.ToString();
}
}
---------------------------操作数据库的方法结束---------------------------
用的是 PictureBox 控件!
---------------------------将图片转换为byte的地方开始---------------------------
private void photoPictureBox_DoubleClick(object sender, EventArgs e)
{
Stream photoStream = null;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
string pathName = openFileDialog1.FileName;
if ((photoStream = openFileDialog1.OpenFile()) != null)
{
using (photoStream)
{
if (photoStream.Length > 50 * 1024)//文件不应大于50K
{
this.infoPanel1.ShowInfo(InfoPanel.TipType.ERROR, "文件大小不超过50K");
return;
}
//将图像读入到字节数组
byte[] buffByte = new byte[photoStream.Length];
int ret = photoStream.Read(buffByte, 0, (int)photoStream.Length);
this.photo = buffByte;
Image image = Image.FromStream(photoStream, true);
Image imgPhoto = image;
if (buffByte.Length > 15000)