///
二维码管理者
///
public class DimensionalCodeManager
{
///
/// 临时二维码地址
///
/// 使用string.format时，报：字符串格式
错误，因为其中有{
//private const string TEMP_URL = "{\"expire_seconds\": 1800,\"action_name\": \"QR_SCENE\",\"action_info\": {\"scene\": {\"scene_id\": {0}}}}";
///
/// 解决办法，将原有字符串中的一个{用两个{代替
///
private const string TEMP_JSON_DATA = "{{\"expire_seconds\": 1800,\"action_info\": {{\"scene\": {{\"scene_id\": {0}}}}}}}";
///
/// 永久二维码地址
///
private const string PERMANENT_URL = "{{\"action_name\": \"QR_LIMIT_SCENE\",\"action_info\": {{\"scene\": {{\"scene_id\": {0}}}}}}}";
///
/// 获取ticket的URL
///
private const string GET_TICKET_URL = " https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token={0}";
///
/// 获取二维码URL
///
private const string GET_CODE_URL = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket={0}";
///
/// 根据场景ID获取ticket
///
///
///
二维码
///
private static string GetTicket(int sceneID,bool isTemp)
{
string result = null;
string data = string.Empty;
if (isTemp)
{
data = string.Format(TEMP_JSON_DATA,sceneID.ToString());
}
else
{
if (sceneID > 0 && sceneID <= 1000)
{
data = string.Format(PERMANENT_URL,sceneID);
}
else
{
//scene_id不合法
return null;
}
}
string ticketJson = HttpUtility.GetData(string.Format(GET_TICKET_URL,Context.AccessToken));
XDocument doc = XmlUtility.ParseJson(ticketJson,"root");
XElement root = doc.Root;
if (root != null)
{
XElement ticket = root.Element("ticket");
if (ticket != null)
{
result = ticket.Value;
}
}
return result;
}
///
/// 创建临时二维码
///
/// <param name="sceneID">场景id，int类型
///
public static string GenerateTemp(int sceneID)
{
string ticket = GetTicket(sceneID,true);
if (ticket == null)
{
return null;
}
return HttpUtility.GetData(string.Format(GET_CODE_URL,ticket));
}
///
/// 创建临时二维码
///
/// <param name="sceneID">场景id，int类型
///
public static string GeneratePermanent(int sceneID)
{
string ticket = GetTicket(sceneID,false);
if (ticket == null)
{
return null;
}
return HttpUtility.GetData(string.Format(GET_CODE_URL,ticket));
}
}
