微信小程序获取小程序页面二维码API接口，通过后台post网址https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=ACCESS_TOKEN，
获取access_token方式，参数{"path": "pages/index/index?query=1", "width": 260},可以获得图片二进制流，直接打印二进制流为乱码
该二进制流直接保存成png图片，一下为本人所写的部分核心代码，需要引用using system.net
/// url 网址 || param 参数
- public static string PostMoths(string url, string param)
- {
- string strURL = url;
- System.Net.HttpWebRequest request;
- request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
- request.Method = "POST";
- request.ContentType = "application/json;charset=UTF-8";
- string paraUrlCoded = param;
- byte[] payload;
- payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
- request.ContentLength = payload.Length;
- Stream writer = request.GetRequestStream();
- writer.Write(payload, 0, payload.Length);
- writer.Close();
- System.Net.HttpWebResponse response;
- response = (System.Net.HttpWebResponse)request.GetResponse();
- System.IO.Stream s;
- s = response.GetResponseStream();
- string StrDate = "";
- string strValue = "";
- byte[] tt = StreamToBytes(s);
- //将流保存在c盘test.png文件下
- System.IO.File.WriteAllBytes(@"c:\test.png", tt);
- }
- ///将数据流转为byte[]
- public static byte[] StreamToBytes(Stream stream)
- {
- List bytes = new List();
- int temp = stream.ReadByte();
- while (temp != -1)
- {
- bytes.Add((byte)temp);
- temp = stream.ReadByte();
- }
- return bytes.ToArray();
- }
生成的带参数二维码
