/// <summary>
/// 通过code换取网页授权access_token和openid的返回数据，正确时返回的JSON数据包如下：
/// {
/// "access_token":"ACCESS_TOKEN",
/// "expires_in":7200,
/// "refresh_token":"REFRESH_TOKEN",
/// "openid":"OPENID",
/// "scope":"SCOPE",
/// "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL"
/// }
/// 其中access_token可用于获取共享收货地址
/// openid是微信支付jsapi支付接口统一下单时必须的参数
/// 更详细的说明请参考网页授权获取用户基本信息：http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
/// 未实现解读Json信息
/// </summary>
/// <param name="code"></param>
/// <exception cref="WxPayException">异常处理</exception>
public void GetOpenidAndAccessTokenFromCode(string code)
{
try
{
//构造获取openid及access_token的url
WxPayData data = new WxPayData();
data.SetValue("appid", WxPayConfig.APPID);
data.SetValue("secret", WxPayConfig.APPSECRET);
data.SetValue("code", code);
data.SetValue("grant_type", "authorization_code");
string url = "https://api.weixin.qq.com/sns/oauth2/access_token?" + data.ToUrl();
//请求url以获取数据
string result = WxPayHttpService.Get(url);
WxPayLog.Debug(TypeString + ".GetOpenidAndAccessTokenFromCode", "GetOpenidAndAccessTokenFromCode response : " + result);
//保存access_token，用于收货地址获取
IDictionary <string, object> jd = ToObject(result);
access_token = (string)jd["access_token"];
//获取用户openid
openid = (string)jd["openid"];
WxPayLog.Debug(TypeString + ".GetOpenidAndAccessTokenFromCode", "Get openid : " + openid + "\nGet access_token : " + access_token);
}
catch (Exception ex)
{
WxPayLog.ErrorThrow(TypeString + ".GetOpenidAndAccessTokenFromCode", ex.ToString());
}
}
/// <summary>
/// 获取收货地址js函数入口参数,详情请参考收货地址共享接口：http://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_9
/// 调用js获取收货地址时需要传入的参数
/// 格式：json串
/// 包含以下字段：
/// appid：公众号id
/// scope: 填写“jsapi_address”，获得编辑地址权限
/// signType:签名方式，目前仅支持SHA1
/// addrSign: 签名，由appid、url、timestamp、noncestr、accesstoken参与签名
/// timeStamp：时间戳
/// nonceStr: 随机字符串
/// </summary>
/// <returns>共享收货地址js函数需要的参数，json格式可以直接做参数使用</returns>
public string GetEditAddressParameters()
{
string parameter = "";
try
{
//这个地方要注意，参与签名的是网页授权获取用户信息时微信后台回传的完整url
string url = "http://" + UrlHost + Path + UrlQuery;
//构造需要用SHA1算法加密的数据
WxPayData signData = new WxPayData();
signData.SetValue("appid", WxPayConfig.APPID);
signData.SetValue("url", url);
signData.SetValue("timestamp", WxPayApi.GenerateTimeStamp());
signData.SetValue("noncestr", WxPayApi.GenerateNonceStr());
signData.SetValue("accesstoken", access_token);
string param = signData.ToUrl();
WxPayLog.Debug(TypeString + ".GetEditAddressParameters", "SHA1 encrypt param : " + param);
//SHA1加密
string addrSign = Sha1Hash(param);
WxPayLog.Debug(TypeString + ".GetEditAddressParameters", "SHA1 encrypt result : " + addrSign);
//获取收货地址js函数入口参数
WxPayData afterData = new WxPayData();
afterData.SetValue("appId", WxPayConfig.APPID);
afterData.SetValue("scope", "jsapi_address");
afterData.SetValue("signType", "sha1");
afterData.SetValue("addrSign", addrSign);
afterData.SetValue("timeStamp", signData.GetValue("timestamp"));
afterData.SetValue("nonceStr", signData.GetValue("noncestr"));
//转为json格式
parameter = afterData.ToJson();
WxPayLog.Debug(TypeString + ".GetEditAddressParameters", "Get EditAddressParam : " + parameter);
}
catch (Exception ex)
{
WxPayLog.ErrorThrow(TypeString + ".GetEditAddressParameters", ex.ToString());
}
return(parameter);
}
/// <summary>
/// 网页授权获取用户基本信息的全部过程
/// 详情请参看网页授权获取用户基本信息：http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
/// 第一步：利用url跳转获取code
/// 第二步：利用code去获取openid和access_token
/// </summary>
/// <returns>返回RedirectURL,若为空则不跳转</returns>
public string GetOpenidAndAccessToken()
{
if (!string.IsNullOrEmpty(Code))
{
//获取code码，以获取openid和access_token
WxPayLog.Debug(TypeString + ".GetOpenidAndAccessToken", "Get code : " + Code);
GetOpenidAndAccessTokenFromCode(Code);
}
else
{
//构造网页授权获取code的URL
string redirect_uri = HttpUtility.UrlEncode("http://" + UrlHost + Path);
WxPayData data = new WxPayData();
data.SetValue("appid", WxPayConfig.APPID);
data.SetValue("redirect_uri", redirect_uri);
data.SetValue("response_type", "code");
data.SetValue("scope", "snsapi_base");
data.SetValue("state", "STATE" + "#wechat_redirect");
string url = "https://open.weixin.qq.com/connect/oauth2/authorize?" + data.ToUrl();
WxPayLog.Debug(TypeString + ".GetOpenidAndAccessToken", "Will Redirect to URL : " + url);
try
{
//触发微信返回code码
return(url);//Redirect函数会抛出ThreadAbortException异常，不用处理这个异常
}
catch (ThreadAbortException ex)
{
WxPayLog.Error(TypeString + ".GetOpenidAndAccessToken", ex.Message);
}
}
return(null);
}
