ajax加一般处理程序生成带着二维码的图片
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
商品名称：<asp:TextBox ID="TextBox1" runat="server" Width="283px"></asp:TextBox>
<br />
<br />
产品产地：<asp:TextBox ID="TextBox2" runat="server" Width="282px"></asp:TextBox>
<br />
<br />
生产时间：<asp:TextBox ID="TextBox3" runat="server" Width="282px"></asp:TextBox>
<br />
<br />
二 维 码：<asp:TextBox ID="TextBox4" runat="server" Width="281px"></asp:TextBox>
<br />
<br />
<br />
<asp:Button ID="Button1" runat="server" Text="生成" Height="35px" Width="77px" />
<asp:Button ID="Button2" runat="server" Text="打印" Height="34px" Width="82px" />
<br />
<br />
<asp:Image ID="Image1" runat="server"/>
</form>
</body>
</html>
后台——在bin文件夹添加zxing.dll文件
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using ZXing;
using ZXing.Common;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Button1.Click += Button1_Click;
}
void Button1_Click(object sender, EventArgs e)
{
string mingzi = TextBox1.Text;
string chandi = TextBox2.Text;
string shijian = TextBox3.Text;
string ewm = TextBox4.Text;
MultiFormatWriter mutiWriter = new MultiFormatWriter();
BitMatrix bitMatrix = mutiWriter.encode(ewm, BarcodeFormat.QR_CODE, 150, 150);//生成的内容，要生成的样式（这里是二维码），图片大小
//bitMatrix.
Bitmap img = new BarcodeWriter().Write(bitMatrix);
Rectangle rg = new Rectangle(0, 0, 150, 150);//二维码开始画的位置，二维码的大小
Bitmap bitImei = new Bitmap(500, 150);//图片大小
Graphics gr = System.Drawing.Graphics.FromImage(bitImei);
Font font = new Font("微软雅黑", 12);
Brush brush = new SolidBrush(Color.Black);
int x = 150, y = 20;
PointF pointf = new PointF(x, y);
gr.Clear(Color.White);
gr.DrawImage(img, rg);
gr.DrawString("名称：" + mingzi, font, brush, pointf.X, pointf.Y);//字体及其大小，画刷颜色，画图开始的坐标
pointf.Y += 30;
gr.DrawString("产地：" + chandi, font, brush, pointf.X, pointf.Y);
pointf.Y += 30;
gr.DrawString("时间：" + shijian, font, brush, pointf.X, pointf.Y);
string name = mingzi;
string fileName = Server.MapPath("img/") + name + ".jpg";
bitImei.Save(fileName);
Image1.ImageUrl = "img/" + name + ".jpg";
}
}
效果图：
ASP.NET 后台生成带着二维码的图片
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<script src="jquery-1.7.2.min.js"></script>
<style type="text/css">
#sc {
height: 43px;
width: 92px;
}
</style>
</head>
<body>
<from runat="server">
<br />
商 品
名 称：<input type="text" id="mc"/>
<br />
<br />
商 品
产 地：<input type="text" id="cd"/>
<br />
<br />
二维码内容： <input type="text" id="ewm"/>
<br />
<br />
<br />
<input type="button" value="生 成" id="sc" style="font-family:微软雅黑;font-size:20px;"/>
<br />
<br />
<br />
<br />
<img src="" id="img"/>
</from>
<script type="text/javascript">
$("#sc").click(function () {
var mc = $("#mc").val();
var cd = $("#cd").val();
var ewm = $("#ewm").val();
$.ajax({
url: "Handler.ashx",
data: { "mc": mc, "cd": cd, "ewm": ewm },
type: "post",
dataType: "json",
success: function (da) {
var imgsrc = da.end;
$("#img").attr("src",imgsrc);
},
error: function () {
alert("失败！");
}
});
});
</script>
</body>
</html>
一般处理程序：
<%@ WebHandler Language="C#" Class="Handler" %>
using System;
using System.Web;
using System.Collections.Generic;
using System.Linq;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using ZXing;
using ZXing.Common;
public class Handler : IHttpHandler
{
string mc, cd, ewm;
public void ProcessRequest(HttpContext context)
{
mc = context.Request["mc"];
cd = context.Request["cd"];
ewm = context.Request["ewm"];
MultiFormatWriter mutiWriter = new MultiFormatWriter();
BitMatrix bitMatrix = mutiWriter.encode(ewm, BarcodeFormat.QR_CODE, 150, 150);//生成的内容，要生成的样式（这里是二维码），图片大小
//bitMatrix.
Bitmap img = new BarcodeWriter().Write(bitMatrix);
Rectangle rg = new Rectangle(0, 0, 150, 150);//二维码开始画的位置，二维码的大小
Bitmap bitImei = new Bitmap(500, 150);//图片大小
Graphics gr = System.Drawing.Graphics.FromImage(bitImei);
Font font = new Font("微软雅黑", 12);
Brush brush = new SolidBrush(Color.Black);
int x = 150, y = 20;
PointF pointf = new PointF(x, y);
gr.Clear(Color.White);
gr.DrawImage(img, rg);
gr.DrawString("名称：" + mc, font, brush, pointf.X, pointf.Y);//字体及其大小，画刷颜色，画图开始的坐标
pointf.Y += 25;
gr.DrawString("产地：" + cd, font, brush, pointf.X, pointf.Y);
string name = mc;
string fileName = context.Server.MapPath("img/") + name + ".jpg";
bitImei.Save(fileName);
string end = "img/" + name + ".jpg";
end = "{\"end\":\"" + end + "\"}";
context.Response.Write(end);
}
public bool IsReusable
{
get
{
return false;
}
}
}
时间： 2024-10-24 15:24:40