#region
/// <summary>
/// 获取小程序页面的小程序码 不限制
/// </summary>
/// <param name="accessTokenOrAppId">AccessToken或AppId（推荐使用AppId，需要先注册）</param>
/// <param name="scene">最大32个可见字符，只支持数字，大小写英文以及部分特殊字符：!#$&'()*+,/:;=?@-._~，其它字符请自行编码为合法字符（因不支持%，中文无法使用 urlencode 处理，请使用其他编码方式）</param>
/// <param name="page">必须是已经发布的小程序页面，例如 "pages/index/index" ,根路径前不要填加'/',不能携带参数（参数请放在scene字段里），如果不填写这个字段，默认跳主页面</param>
/// <param name="width">小程序码的宽度</param>
/// <param name="auto_color">自动配置线条颜色</param>
/// <returns></returns>
public static async Task<Stream> GetWxaCodeUnlimitTest(string accessTokenOrAppId,
string scene, string page, int width = 430, bool auto_color = false)
{
var authInfo = await AuthorizerContainer.GetAuthorizationInfoAsync(WxOpenConfig.ComponentAppID, accessTokenOrAppId);
var authorizer_access_token = authInfo.authorizer_access_token;
Stream streamAA = new MemoryStream();
//小程序参数
string paramData = "&scene=" + scene
+ "&page=" + page
+ "&width=" + width
+ "&authInfo=" + authInfo
+ "&auto_color=" + auto_color;
var data = new { scene = scene, page = page, width = width, auto_color = auto_color };
string json = data.ToJson();
byte[] load = Encoding.UTF8.GetBytes(json);
//小程序请求接口
string urlFormat = TMConfig.ApiMpHost + "/wxa/getwxacodeunlimit?access_token={0}";
string urlGet = string.Format(urlFormat, authorizer_access_token);
//发起请求
HttpWebRequest wbRequest = (HttpWebRequest)WebRequest.Create(urlGet);
wbRequest.Method = "POST";
wbRequest.ContentType = "application/json;charset=UTF-8";
wbRequest.ContentLength = load.Length;
using (Stream writer = wbRequest.GetRequestStream())
{
writer.Write(load, 0, load.Length);
}
//接收返回包
string resultJson = string.Empty;
HttpWebResponse wbResponse = (HttpWebResponse)wbRequest.GetResponse();
using (Stream responseStream = wbResponse.GetResponseStream())
{
//将数据流转为byte[]
List<byte> bytes = new List<byte>();
int temp = responseStream.ReadByte();
while (temp != -1)
{
bytes.Add((byte)temp);
temp = responseStream.ReadByte();
}
byte[] mg = bytes.ToArray();
//在文件名前面加上时间，以防重名
string imgName = DateTime.Now.ToString("yyyyMMddhhmmss") + ".jpg";
//文件存储相对于当前应用目录的虚拟目录
string path = "/imageAAA/";
//获取相对于应用的基目录,创建目录
string imgPath = System.AppDomain.CurrentDomain.BaseDirectory + path; //通过此对象获取文件名
//StringHelper.CreateDirectory(imgPath);//创建文件夹
System.IO.File.WriteAllBytes(HttpContext.Current.Server.MapPath(path + imgName), mg);//讲byte[]存储为图片
}
return streamAA;
}
#endregion
/// <summary>
/// 小程序二维码线条颜色（RGB颜色）
/// </summary>
public class LineColor
{
/// <summary>
/// 红色
/// </summary>
public int r { get; set; }
/// <summary>
/// 绿色
/// </summary>
public int g { get; set; }
/// <summary>
/// 蓝色
/// </summary>
public int b { get; set; }
}
/// <summary>
/// 获取小程序页面的小程序码的流，次数不限制，如果出错，返回错误消息
/// </summary>
/// <param name="authorizer_access_token"></param>
/// <param name="scene"></param>
/// <param name="page"></param>
/// <param name="width"></param>
/// <param name="auto_color"></param>
/// <param name="line_color"></param>
/// <param name="is_hyaline"></param>
/// <returns></returns>
public static async Task<Dictionary<string, object>> GetWxaCodeUnlimitStreamMsgAsync(
string authorizer_access_token,
string scene,
string page,
int width = 430,
bool auto_color = false,
LineColor line_color = null,
bool is_hyaline = false)
{
////小程序参数
//string paramData = "&scene=" + scene
// + "&page=" + page
// + "&width=" + width
// + "&auto_color=" + auto_color
// + "&line_color=" + line_color
// + "&is_hyaline=" + is_hyaline;
var data = new { scene = scene, page = page, width = width, auto_color = auto_color, line_color = line_color, is_hyaline = is_hyaline };
string paramJson = data.ToJson();
//小程序请求接口
string urlFormat = TMConfig.ApiMpHost + "/wxa/getwxacodeunlimit?access_token={0}";
string urlGet = string.Format(urlFormat, authorizer_access_token);
return await RequestUtility.HttpResponseStreamMsgAsync(urlGet, paramJson);
}
/// <summary>
/// 获取微信小程序二维码的流，如果出错，返回错误消息
/// </summary>
/// <param name="urlGet"></param>
/// <param name="paramJson"></param>
/// <returns></returns>
public async static Task<Dictionary<string, object>> HttpResponseStreamMsgAsync(string urlGet, string paramJson)
{
string currentMethodLog = "[HttpResponseStreamAsyncTest()]获取小程序二维码的流，";
try
{
//发起请求
HttpWebRequest wbRequest = (HttpWebRequest)WebRequest.Create(urlGet);
wbRequest.Method = "POST";
wbRequest.ContentType = "application/json;charset=UTF-8";
byte[] load = Encoding.UTF8.GetBytes(paramJson);
wbRequest.ContentLength = load.Length;
using (Stream writer = wbRequest.GetRequestStream())
{
writer.Write(load, 0, load.Length);
}
//接收返回包
HttpWebResponse wbResponse = (HttpWebResponse)(await wbRequest.GetResponseAsync());
Stream streamSuccess = new MemoryStream();
Stream streamFail = new MemoryStream();
using (Stream responseStream = wbResponse.GetResponseStream())
{
//将数据流转为byte[]
List<byte> bytes = new List<byte>();
int temp = responseStream.ReadByte();
while (temp != -1)
{
bytes.Add((byte)temp);
temp = responseStream.ReadByte();
}
byte[] mg = bytes.ToArray();
streamSuccess = new MemoryStream(mg);
streamFail = new MemoryStream(mg);
//如果请求成功会直接返回数据流，
//如果请求失败会返回Json，例如：
//{"errcode":61004,"errmsg":"access clientip is not registered hint: [aHCZjA05601518]"}
//{"errcode":61004,"errmsg":"access clientip is not registered hint: [aHCZjA05601518]"}
try
{
//返回失败
StreamReader sread = new StreamReader(streamFail);
string result = sread.ReadToEnd();
Dictionary<string, string> dicResult = JsonExt.ToObject<Dictionary<string, string>>(result);
Log4NetHelper.Log(LogTypeEnum.ServicesLog, LogLevelEnum.Error,
"接收微信返回错误消息：" + result);
streamSuccess.Dispose();//释放成功流的资源
Dictionary<string, object> dic = new Dictionary<string, object>();
dic.Add("FAIL", result);
return dic;
}
catch (Exception ex)
{
//返回成功
streamFail.Dispose();//释放失败流的资源
Dictionary<string, object> dic = new Dictionary<string, object>();
dic.Add("SUCCESS", streamSuccess);
return dic;
}
}
}
catch (Exception ex)
{
Log4NetHelper.Log(LogTypeEnum.ServicesLog, LogLevelEnum.Error,
currentMethodLog + "接口报错:", ex);
Dictionary<string, object> dic = new Dictionary<string, object>();
dic.Add("FAIL", currentMethodLog + "接口报错:" + ex.Message);
return dic;
}
}
//获取小程序二维码的流
var resultDic = await WxAppApi.GetWxaCodeUnlimitStreamMsgAsync(authorizer_access_token, scene, page);
if (resultDic.First().Key.Equals("FAIL"))
{
response.Status = BaseResponseStatusEnum.Error;
response.Msg = resultDic.First().Value.ToString();
return response;
}
Stream wXQrCodePicStream = resultDic.First().Value as Stream;
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标签：string,color,scene,wbRequest,HttpWebRequest,数据流,new,net,page From： https://www.cnblogs.com/jankie1122/p/11108639.html