/// <summary>
/// 公众号 微信获取code回调地址
/// </summary>
/// <param name="redirectUrl">redirectUrl</param>
/// <param name="wxConfig"></param>
/// <param name="isApp">是否是APP端</param>
/// <returns></returns>
public string GetWeChatCode(string redirectUrl, WechatAccount wxConfig, bool isApp = true)
{
if (wxConfig == null)
{
throw new ApiException(-1, "账号不存在");
}
var url = "";
if (isApp)
{
url = string.Format(_config.WechatConfig.WechatAppConnect, wxConfig.AppID, redirectUrl, "snsapi_userinfo");
}
else
{
url = string.Format(_config.WechatConfig.WechatPCConnect, wxConfig.AppID, redirectUrl, "snsapi_login");
}
return(url);
}
/// <summary>
/// 公众号/小程序 获取AccessToken
/// </summary>
/// <param name="wxConfig"></param>
/// <param name="code">为空时获取的是JSAPI临时Token</param>
/// <returns></returns>
public async Task <WeChatAccessTokenInfo> GetWeChatAccessTokenAsync(WechatAccount wxConfig, string code = "")
{
if (wxConfig == null)
{
throw new ApiException(-1, "账号不存在");
}
string cacheKey = $"wechat:{wxConfig.AppID}";
if (!string.IsNullOrEmpty(code))
{
cacheKey = $"{cacheKey}:{code}";
}
var result = _memoryCache.Get <WeChatAccessTokenInfo>(cacheKey);
if (result != null)
{
return(result);
}
string apiUrl = string.IsNullOrEmpty(code) ?
string.Format(_config.WechatConfig.MiniTokenUrl, wxConfig.AppID, wxConfig.AppSecret) :
string.Format(_config.WechatConfig.WechatTokenUrl, wxConfig.AppID, wxConfig.AppSecret, code);
using (var request = new HttpRequestMessage(HttpMethod.Get, apiUrl))
{
var responseMessage = await _httpClient.SendAsync(request);
responseMessage.EnsureSuccessStatusCode();
var json = await responseMessage.Content.ReadAsStringAsync();
result = json.FromJson <WeChatAccessTokenInfo>();
if (result != null && !string.IsNullOrEmpty(result.Access_Token))
{
_memoryCache.Set(cacheKey, result, TimeSpan.FromSeconds(result.Expires_In - 5));
}
}
return(result);
}
/// <summary>
/// 小程序 临时登录凭证
/// </summary>
/// <param name="code">用户登录小程序获取到的Code</param>
/// <param name="wxConfig"></param>
/// <returns></returns>
public async Task <WeChatLoginInfo> LoginAsync(string code, WechatAccount wxConfig)
{
if (string.IsNullOrEmpty(code))
{
throw new ApiException(-1, "小程序未授权");
}
if (wxConfig == null)
{
throw new ApiException(-1, "小程序账号不存在");
}
var cacheKey = $"wechat:{wxConfig.AppID}:{code}";
var result = _memoryCache.Get <WeChatLoginInfo>(cacheKey);
if (result != null)
{
return(result);
}
string apiUrl = string.Format(_config.WechatConfig.MiniSessionUrl, wxConfig.AppID, wxConfig.AppSecret, code);
using (var request = new HttpRequestMessage(HttpMethod.Get, apiUrl))
{
var responseMessage = await _httpClient.SendAsync(request);
responseMessage.EnsureSuccessStatusCode();
var json = await responseMessage.Content.ReadAsStringAsync();
result = json.FromJson <WeChatLoginInfo>();
if (result == null || string.IsNullOrEmpty(result.session_key))
{
throw new ApiException(-1, "小程序授权异常");
}
//小程序登录Code有效期只有5分钟
_memoryCache.Set(cacheKey, result, TimeSpan.FromMinutes(5));
}
return(result);
}
