此程序分客户端跟服务器端两个方面的代码
ASP.NET代码
using System; using System.Collections.Generic; using System.IO; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace QRCode { public partial class QRCode : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (Request.Files.Count > 0) { try { HttpPostedFile file = Request.Files[0]; this.MapPath("UploadDocument"); string filePath = "D:\\QRCodes\\QRCodes\\QRCodes\\image\\" + file.FileName; file.SaveAs(filePath); Response.Write("Success"); } catch { Response.Write("Error"); } } else { Response.Write("Error1"); } } public void FolderCreate(string Path) { if (!Directory.Exists(Path)) Directory.CreateDirectory(Path); } } }
using System; using System.Collections.Generic; using System.Data; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace QRCode { public partial class QRCodes : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string id = Request.QueryString["id"]; if (id != null) { string sql = "Select top 1 * from weChatQRCodes where code=‘" + id + "‘ and num<100"; DataTable dt = SqlHelper.ExecuteDataTable(sql); if (dt.Rows.Count > 0) { Image1.ImageUrl = dt.Rows[0]["images"].ToString(); int i= Convert.ToInt32( dt.Rows[0]["num"])+1; string sqlStr = "Update weChatQRCodes set num=" + i + " where id=‘" + dt.Rows[0]["id"] + "‘"; SqlHelper.ExecuteNonQuery(sqlStr); } } } } }
客户端代码
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.IO; using System.Net; using System.Text; using System.Windows.Forms; using ThoughtWorks.QRCode.Codec; namespace WeChatQRCode { public partial class Form1 : Form { public Form1() { InitializeComponent(); } string safeFilterName; private void button1_Click(object sender, EventArgs e) { OpenFileDialog open = new OpenFileDialog(); if (button1.Text == "打开图片") { open.InitialDirectory = "C\\"; open.RestoreDirectory = true; open.FilterIndex = 1; open.Filter = "jpg文件(*.jpg)|*.jpg"; if (open.ShowDialog() == DialogResult.OK) { try { if (open.Filter != null) { textBox1.Text = open.FileName; safeFilterName = open.SafeFileName; button1.Text = "上传图片"; } } catch (Exception ex) { MessageBox.Show("文件打开错误！" + ex.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Warning); } } } else { if (textBox3.Text == "") { MessageBox.Show("请输入名称后再上传！"); textBox3.Focus(); } else { if (Upload_Request("http://chemishu.com.cn/QRCode.aspx", textBox1.Text, safeFilterName, progressBar1) == 1) { string sql = "insert into weChatQRCodes(code,images,num,picAdress,name) values(‘" + textBox2.Text + "‘,‘~\\image\\" + safeFilterName + "‘,1,‘http://chemishu.com.cn/image/" + safeFilterName + "‘,‘"+textBox3.Text+"‘)"; int i = SqlHelper.ExecuteNonQuery(sql); if (i == 1) { MessageBox.Show("上传成功！"); lblSize.Visible = false; lblSpeed.Visible = false; lblState.Visible = false; lblTime.Visible = false; progressBar1.Visible = false; button1.Text = "打开图片"; textBox1.Text = ""; textBox3.Text = ""; } else { MessageBox.Show("上传成功，插入数据库失败！"); lblSize.Visible = false; lblSpeed.Visible = false; lblState.Visible = false; lblTime.Visible = false; progressBar1.Visible = false; button1.Text = "打开图片"; textBox1.Text = ""; textBox3.Text = ""; } } else { MessageBox.Show("上传失败！"); lblSize.Visible = false; lblSpeed.Visible = false; lblState.Visible = false; lblTime.Visible = false; progressBar1.Visible = false; } } } } /// <summary> /// 将本地文件上传到指定的服务器(HttpWebRequest方法) /// </summary> /// <param name="address">文件上传到的服务器</param> /// <param name="fileNamePath">要上传的本地文件（全路径）</param> /// <param name="saveName">文件上传后的名称</param> /// <param name="progressBar">上传进度条</param> /// <returns>成功返回1，失败返回0</returns> private int Upload_Request(string address, string fileNamePath, string saveName, ProgressBar progressBar) { progressBar1.Visible = true; lblSize.Visible = true; lblSpeed.Visible = true; lblState.Visible = true; lblTime.Visible = true; int returnValue = 0; // 要上传的文件 FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read); BinaryReader r = new BinaryReader(fs); //时间戳 string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x"); byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n"); //请求头部信息 StringBuilder sb = new StringBuilder(); sb.Append("--"); sb.Append(strBoundary); sb.Append("\r\n"); sb.Append("Content-Disposition: form-data; name=\""); sb.Append("file"); sb.Append("\"; filename=\""); sb.Append(saveName); sb.Append("\";"); sb.Append("\r\n"); sb.Append("Content-Type: "); sb.Append("application/octet-stream"); sb.Append("\r\n"); sb.Append("\r\n"); string strPostHeader = sb.ToString(); byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader); // 根据uri创建HttpWebRequest对象 HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address)); httpReq.Method = "POST"; //对发送的数据不使用缓存 httpReq.AllowWriteStreamBuffering = false; //设置获得响应的超时时间（300秒） httpReq.Timeout = 300000; httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary; long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length; long fileLength = fs.Length; httpReq.ContentLength = length; try { progressBar.Maximum = int.MaxValue; progressBar.Minimum = 0; progressBar.Value = 0; //每次上传4k int bufferLength = 4096; byte[] buffer = new byte[bufferLength]; //已上传的字节数 long offset = 0; //开始上传时间 DateTime startTime = DateTime.Now; int size = r.Read(buffer, 0, bufferLength); Stream postStream = httpReq.GetRequestStream(); //发送请求头部消息 postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length); while (size > 0) { postStream.Write(buffer, 0, size); offset += size; progressBar.Value = (int)(offset * (int.MaxValue / length)); TimeSpan span = DateTime.Now - startTime; double second = span.TotalSeconds; lblTime.Text = "已用时：" + second.ToString("F2") + "秒"; if (second > 0.001) { lblSpeed.Text = "平均速度：" + (offset / 1024 / second).ToString("0.00") + "KB/秒"; } else { lblSpeed.Text = " 正在连接…"; } lblState.Text = "已上传：" + (offset * 100.0 / length).ToString("F2") + "%"; lblSize.Text = (offset / 1048576.0).ToString("F2") + "M/" + (fileLength / 1048576.0).ToString("F2") + "M"; Application.DoEvents(); size = r.Read(buffer, 0, bufferLength); } //添加尾部的时间戳 postStream.Write(boundaryBytes, 0, boundaryBytes.Length); postStream.Close(); //获取服务器端的响应 WebResponse webRespon = httpReq.GetResponse(); Stream s = webRespon.GetResponseStream(); //读取服务器端返回的消息 StreamReader sr = new StreamReader(s); String sReturnString = sr.ReadLine(); s.Close(); sr.Close(); if (sReturnString == "Success") { returnValue = 1; } else if (sReturnString == "Error") { returnValue = 0; } } catch { returnValue = 0; } finally { fs.Close(); r.Close(); } return returnValue; } private void button2_Click(object sender, EventArgs e) { QRCodeEncoder qrCodeEncoder = new QRCodeEncoder(); String data = "http://chemishu.com.cn/QRCodes.aspx?id=" + textBox2.Text; Image image = qrCodeEncoder.Encode(data, Encoding.UTF8); pictureBox1.Image = image; } private void button3_Click(object sender, EventArgs e) { SaveFileDialog save = new SaveFileDialog(); save.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif|PnG Image|*.png|Wmf Image|*.wmf"; save.FilterIndex = 0; if (pictureBox1.Image == null) { MessageBox.Show("没有预览图片"); } else if (save.ShowDialog() == DialogResult.OK) { if (pictureBox1.Image != null) { pictureBox1.Image.Save(save.FileName, System.Drawing.Imaging.ImageFormat.Jpeg); } } } private void button4_Click(object sender, EventArgs e) { Form2 frm = new Form2(); frm.code = textBox2.Text; frm.ShowDialog(); } } }
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Net; using System.Text; using System.Windows.Forms; namespace WeChatQRCode { public partial class Form2 : Form { public Form2() { InitializeComponent(); } public string code; DataTable dt; int i; private void Form2_Load(object sender, EventArgs e) { string sql = "select * from weChatQRCodes where code=‘" + code + "‘"; dt = SqlHelper.ExecuteDataTable(sql); if (dt.Rows.Count > 0) { string url = dt.Rows[0]["picAdress"].ToString(); pictureBox1.ImageLocation = dt.Rows[0]["picAdress"].ToString(); lblnum.Text = dt.Rows[0]["num"].ToString(); lblName.Text = dt.Rows[0]["name"].ToString(); button1.Enabled = false; if (dt.Rows.Count == 1) { button2.Enabled = false; } i = 0; } else { button1.Enabled = false; button2.Enabled = false; } } private void button2_Click(object sender, EventArgs e) { if (i < dt.Rows.Count-1) { if (i == 0) { button1.Enabled = true; } i++; pictureBox1.ImageLocation = dt.Rows[i]["picAdress"].ToString(); lblnum.Text = dt.Rows[i]["num"].ToString(); lblName.Text = dt.Rows[i]["name"].ToString(); if (i == dt.Rows.Count-1) { button2.Enabled = false; } } } private void button1_Click(object sender, EventArgs e) { if (i == dt.Rows.Count-1) { button2.Enabled = true; } i--; pictureBox1.ImageLocation = dt.Rows[i]["picAdress"].ToString(); lblnum.Text = dt.Rows[i]["num"].ToString(); lblName.Text = dt.Rows[i]["name"].ToString(); if (i == 0) { button1.Enabled = false; } } } }