Introduction:
Develop a WeChat website at work, referred to as a microsite. Since the shared content of the microsite is the current URL automatically selected by the system, the customer needs to change the shared content, that is, click the share button in the upper right corner of the screen and choose Send to Friends or Send to Moments. The content and pictures need to be customized. So I looked up the article WeChat JS-SDK Description Document and the experience of many experts on the website. I generally knew the steps of calling, but I didn’t understand how to make the call successful. After some experiments, the two interfaces of Send to Friends and Send to Moments were finally successfully called. The specific process of the call is recorded here.
Step 1: Reference the js file.
Introduce the following JS file into the page that needs to call the JS interface (https is supported): http://res.wx.qq.com/open/js/jweixin-1.0.0.js
Step 2: Inject the permission verification configuration through the config interface
wx.config({
debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
appId: '', // 必填，公众号的唯一标识
timestamp: , // 必填，生成签名的时间戳
nonceStr: '', // 必填，生成签名的随机串
signature: '',// 必填，签名，见附录1
jsApiList: [] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
});Many netizens on the Internet also wrote this , but there is little talk about the specific configuration. Next, we will introduce how to call it in this article.
Debug and appId, needless to say, very simple.
timespan generates the timestamp of the signature:
/// <summary>
/// 生成时间戳
/// 从 1970 年 1 月 1 日 00：00：00 至今的秒数，即当前的时间，且最终需要转换为字符串形式
/// </summary>
/// <returns></returns>
public string getTimestamp()
{
TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
return Convert.ToInt64(ts.TotalSeconds).ToString();
}
nonceStr generates a random string of the signature ：
/// <summary>
/// 生成随机字符串
/// </summary>
/// <returns></returns>
public string getNoncestr()
{
Random random = new Random();
return MD5Util.GetMD5(random.Next(1000).ToString(), "GBK");
}/// <summary>
/// MD5Util 的摘要说明。 /// </summary>
public class MD5Util
{ public MD5Util()
{ //
// TODO: 在此处添加构造函数逻辑
//
}
/** 获取大写的MD5签名结果 */
public static string GetMD5(string encypStr, string charset)
{ string retStr;
MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();
//创建md5对象
byte[] inputBye; byte[] outputBye;
//使用GB2312编码方式把字符串转化为字节数组．
try
{
inputBye = Encoding.GetEncoding(charset).GetBytes(encypStr);
} catch (Exception ex)
{
inputBye = Encoding.GetEncoding("GB2312").GetBytes(encypStr);
}
outputBye = m5.ComputeHash(inputBye);
retStr = System.BitConverter.ToString(outputBye);
retStr = retStr.Replace("-", "").ToUpper();
return retStr;
}
}View Code
/// <summary>
/// MD5Util 的摘要说明。
/// </summary>
public class MD5Util
{
public MD5Util()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
/** 获取大写的MD5签名结果 */
public static string GetMD5(string encypStr, string charset)
{
string retStr;
MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();
//创建md5对象
byte[] inputBye;
byte[] outputBye;
//使用GB2312编码方式把字符串转化为字节数组．
try
{
inputBye = Encoding.GetEncoding(charset).GetBytes(encypStr);
}
catch (Exception ex)
{
inputBye = Encoding.GetEncoding("GB2312").GetBytes(encypStr);
}
outputBye = m5.ComputeHash(inputBye);
retStr = System.BitConverter.ToString(outputBye);
retStr = retStr.Replace("-", "").ToUpper();
return retStr;
}
}
Singature signature generation is more troublesome.
First generate and obtain access_token (validity period is 7200 seconds, developers must cache access_token globally in their own services)
public string Getaccesstoken()
{
string appid = System.Configuration.ConfigurationManager.AppSettings["WXZjAppID"].ToString();
string secret = System.Configuration.ConfigurationManager.AppSettings["WXZjAppSecret"].ToString();
string urljson = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
string strjson = "";
UTF8Encoding encoding = new UTF8Encoding();
HttpWebRequest myRequest =
(HttpWebRequest)WebRequest.Create(urljson);
myRequest.Method = "GET";
myRequest.ContentType = "application/x-www-form-urlencoded";
HttpWebResponse response;
Stream responseStream;
StreamReader reader;
string srcString;
response = myRequest.GetResponse() as HttpWebResponse;
responseStream = response.GetResponseStream();
reader = new System.IO.StreamReader(responseStream, Encoding.UTF8);
srcString = reader.ReadToEnd();
reader.Close();
if (srcString.Contains("access_token"))
{
//CommonJsonModel model = new CommonJsonModel(srcString);
HP.CPS.BLL.WeiXin.CommonJsonModel model = new BLL.WeiXin.CommonJsonModel(srcString);
strjson = model.GetValue("access_token");
Session["access_tokenzj"] = strjson;
}
return strjson;
}
public class CommonJsonModelAnalyzer
{ protected string _GetKey(string rawjson)
{ if (string.IsNullOrEmpty(rawjson)) return rawjson;
rawjson = rawjson.Trim(); string[] jsons = rawjson.Split(new char[] { ':' }); if (jsons.Length < 2) return rawjson; return jsons[0].Replace("\"", "").Trim();
} protected string _GetValue(string rawjson)
{ if (string.IsNullOrEmpty(rawjson)) return rawjson;
rawjson = rawjson.Trim(); string[] jsons = rawjson.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries); if (jsons.Length < 2) return rawjson;
StringBuilder builder = new StringBuilder(); for (int i = 1; i < jsons.Length; i++)
{
builder.Append(jsons[i]);
builder.Append(":");
} if (builder.Length > 0)
builder.Remove(builder.Length - 1, 1); string value = builder.ToString(); if (value.StartsWith("\""))
value = value.Substring(1); if (value.EndsWith("\""))
value = value.Substring(0, value.Length - 1); return value;
} protected List<string> _GetCollection(string rawjson)
{ //[{},{}]
List<string> list = new List<string>(); if (string.IsNullOrEmpty(rawjson)) return list;
rawjson = rawjson.Trim();
StringBuilder builder = new StringBuilder(); int nestlevel = -1; int mnestlevel = -1; for (int i = 0; i < rawjson.Length; i++)
{ if (i == 0) continue; else if (i == rawjson.Length - 1) continue; char jsonchar = rawjson[i]; if (jsonchar == '{')
{
nestlevel++;
} if (jsonchar == '}')
{
nestlevel--;
} if (jsonchar == '[')
{
mnestlevel++;
} if (jsonchar == ']')
{
mnestlevel--;
} if (jsonchar == ',' && nestlevel == -1 && mnestlevel == -1)
{
list.Add(builder.ToString());
builder = new StringBuilder();
} else
{
builder.Append(jsonchar);
}
} if (builder.Length > 0)
list.Add(builder.ToString()); return list;
}
} public class CommonJsonModel : CommonJsonModelAnalyzer
{ private string rawjson; private bool isValue = false; private bool isModel = false; private bool isCollection = false; public CommonJsonModel(string rawjson)
{ this.rawjson = rawjson; if (string.IsNullOrEmpty(rawjson)) throw new Exception("missing rawjson");
rawjson = rawjson.Trim(); if (rawjson.StartsWith("{"))
{
isModel = true;
} else if (rawjson.StartsWith("["))
{
isCollection = true;
} else
{
isValue = true;
}
} public string Rawjson
{ get { return rawjson; }
} public bool IsValue()
{ return isValue;
} public bool IsValue(string key)
{ if (!isModel) return false; if (string.IsNullOrEmpty(key)) return false; foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value); return submodel.IsValue();
}
} return false;
} public bool IsModel()
{ return isModel;
} public bool IsModel(string key)
{ if (!isModel) return false; if (string.IsNullOrEmpty(key)) return false; foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value); return submodel.IsModel();
}
} return false;
} public bool IsCollection()
{ return isCollection;
} public bool IsCollection(string key)
{ if (!isModel) return false; if (string.IsNullOrEmpty(key)) return false; foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value); return submodel.IsCollection();
}
} return false;
} /// <summary>
/// 当模型是对象，返回拥有的key /// </summary>
/// <returns></returns>
public List<string> GetKeys()
{ if (!isModel) return null;
List<string> list = new List<string>(); foreach (string subjson in base._GetCollection(this.rawjson))
{ string key = new CommonJsonModel(subjson).Key; if (!string.IsNullOrEmpty(key))
list.Add(key);
} return list;
} /// <summary>
/// 当模型是对象，key对应是值，则返回key对应的值 /// </summary>
/// <param name="key"></param>
/// <returns></returns>
public string GetValue(string key)
{ if (!isModel) return null; if (string.IsNullOrEmpty(key)) return null; foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key) return model.Value;
} return null;
} /// <summary>
/// 模型是对象，key对应是对象，返回key对应的对象 /// </summary>
/// <param name="key"></param>
/// <returns></returns>
public CommonJsonModel GetModel(string key)
{ if (!isModel) return null; if (string.IsNullOrEmpty(key)) return null; foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value); if (!submodel.IsModel()) return null; else
return submodel;
}
} return null;
} /// <summary>
/// 模型是对象，key对应是集合，返回集合 /// </summary>
/// <param name="key"></param>
/// <returns></returns>
public CommonJsonModel GetCollection(string key)
{ if (!isModel) return null; if (string.IsNullOrEmpty(key)) return null; foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson); if (!model.IsValue()) continue; if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value); if (!submodel.IsCollection()) return null; else
return submodel;
}
} return null;
} /// <summary>
/// 模型是集合，返回自身 /// </summary>
/// <returns></returns>
public List<CommonJsonModel> GetCollection()
{
List<CommonJsonModel> list = new List<CommonJsonModel>(); if (IsValue()) return list; foreach (string subjson in base._GetCollection(rawjson))
{
list.Add(new CommonJsonModel(subjson));
} return list;
} /// <summary>
/// 当模型是值对象，返回key /// </summary>
private string Key
{ get
{ if (IsValue()) return base._GetKey(rawjson); return null;
}
} /// <summary>
/// 当模型是值对象，返回value /// </summary>
private string Value
{ get
{ if (!IsValue()) return null; return base._GetValue(rawjson);
}
}
}##View Code
public class CommonJsonModelAnalyzer
{
protected string _GetKey(string rawjson)
{
if (string.IsNullOrEmpty(rawjson))
return rawjson;
rawjson = rawjson.Trim();
string[] jsons = rawjson.Split(new char[] { ':' });
if (jsons.Length < 2)
return rawjson;
return jsons[0].Replace("\"", "").Trim();
}
protected string _GetValue(string rawjson)
{
if (string.IsNullOrEmpty(rawjson))
return rawjson;
rawjson = rawjson.Trim();
string[] jsons = rawjson.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
if (jsons.Length < 2)
return rawjson;
StringBuilder builder = new StringBuilder();
for (int i = 1; i < jsons.Length; i++)
{
builder.Append(jsons[i]);
builder.Append(":");
}
if (builder.Length > 0)
builder.Remove(builder.Length - 1, 1);
string value = builder.ToString();
if (value.StartsWith("\""))
value = value.Substring(1);
if (value.EndsWith("\""))
value = value.Substring(0, value.Length - 1);
return value;
}
protected List<string> _GetCollection(string rawjson)
{
//[{},{}]
List<string> list = new List<string>();
if (string.IsNullOrEmpty(rawjson))
return list;
rawjson = rawjson.Trim();
StringBuilder builder = new StringBuilder();
int nestlevel = -1;
int mnestlevel = -1;
for (int i = 0; i < rawjson.Length; i++)
{
if (i == 0)
continue;
else if (i == rawjson.Length - 1)
continue;
char jsonchar = rawjson[i];
if (jsonchar == '{')
{
nestlevel++;
}
if (jsonchar == '}')
{
nestlevel--;
}
if (jsonchar == '[')
{
mnestlevel++;
}
if (jsonchar == ']')
{
mnestlevel--;
}
if (jsonchar == ',' && nestlevel == -1 && mnestlevel == -1)
{
list.Add(builder.ToString());
builder = new StringBuilder();
}
else
{
builder.Append(jsonchar);
}
}
if (builder.Length > 0)
list.Add(builder.ToString());
return list;
}
}
public class CommonJsonModel : CommonJsonModelAnalyzer
{
private string rawjson;
private bool isValue = false;
private bool isModel = false;
private bool isCollection = false;
public CommonJsonModel(string rawjson)
{
this.rawjson = rawjson;
if (string.IsNullOrEmpty(rawjson))
throw new Exception("missing rawjson");
rawjson = rawjson.Trim();
if (rawjson.StartsWith("{"))
{
isModel = true;
}
else if (rawjson.StartsWith("["))
{
isCollection = true;
}
else
{
isValue = true;
}
}
public string Rawjson
{
get { return rawjson; }
}
public bool IsValue()
{
return isValue;
}
public bool IsValue(string key)
{
if (!isModel)
return false;
if (string.IsNullOrEmpty(key))
return false;
foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson);
if (!model.IsValue())
continue;
if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value);
return submodel.IsValue();
}
}
return false;
}
public bool IsModel()
{
return isModel;
}
public bool IsModel(string key)
{
if (!isModel)
return false;
if (string.IsNullOrEmpty(key))
return false;
foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson);
if (!model.IsValue())
continue;
if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value);
return submodel.IsModel();
}
}
return false;
}
public bool IsCollection()
{
return isCollection;
}
public bool IsCollection(string key)
{
if (!isModel)
return false;
if (string.IsNullOrEmpty(key))
return false;
foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson);
if (!model.IsValue())
continue;
if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value);
return submodel.IsCollection();
}
}
return false;
}
/// <summary>
/// 当模型是对象，返回拥有的key
/// </summary>
/// <returns></returns>
public List<string> GetKeys()
{
if (!isModel)
return null;
List<string> list = new List<string>();
foreach (string subjson in base._GetCollection(this.rawjson))
{
string key = new CommonJsonModel(subjson).Key;
if (!string.IsNullOrEmpty(key))
list.Add(key);
}
return list;
}
/// <summary>
/// 当模型是对象，key对应是值，则返回key对应的值
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public string GetValue(string key)
{
if (!isModel)
return null;
if (string.IsNullOrEmpty(key))
return null;
foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson);
if (!model.IsValue())
continue;
if (model.Key == key)
return model.Value;
}
return null;
}
/// <summary>
/// 模型是对象，key对应是对象，返回key对应的对象
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public CommonJsonModel GetModel(string key)
{
if (!isModel)
return null;
if (string.IsNullOrEmpty(key))
return null;
foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson);
if (!model.IsValue())
continue;
if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value);
if (!submodel.IsModel())
return null;
else
return submodel;
}
}
return null;
}
/// <summary>
/// 模型是对象，key对应是集合，返回集合
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public CommonJsonModel GetCollection(string key)
{
if (!isModel)
return null;
if (string.IsNullOrEmpty(key))
return null;
foreach (string subjson in base._GetCollection(this.rawjson))
{
CommonJsonModel model = new CommonJsonModel(subjson);
if (!model.IsValue())
continue;
if (model.Key == key)
{
CommonJsonModel submodel = new CommonJsonModel(model.Value);
if (!submodel.IsCollection())
return null;
else
return submodel;
}
}
return null;
}
/// <summary>
/// 模型是集合，返回自身
/// </summary>
/// <returns></returns>
public List<CommonJsonModel> GetCollection()
{
List<CommonJsonModel> list = new List<CommonJsonModel>();
if (IsValue())
return list;
foreach (string subjson in base._GetCollection(rawjson))
{
list.Add(new CommonJsonModel(subjson));
}
return list;
}
/// <summary>
/// 当模型是值对象，返回key
/// </summary>
private string Key
{
get
{
if (IsValue())
return base._GetKey(rawjson);
return null;
}
}
/// <summary>
/// 当模型是值对象，返回value
/// </summary>
private string Value
{
get
{
if (!IsValue())
return null;
return base._GetValue(rawjson);
}
}
}The validity period is 7200 seconds. Developers must cache jsapi_ticket globally in their own services)
public string Getjsapi_ticket()
{
string accesstoken = (string)Session["access_tokenzj"];
string urljson = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + accesstoken + "&type=jsapi";
string strjson = "";
UTF8Encoding encoding = new UTF8Encoding();
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(urljson);
myRequest.Method = "GET";
myRequest.ContentType = "application/x-www-form-urlencoded";
HttpWebResponse response = myRequest.GetResponse() as HttpWebResponse;
Stream responseStream = response.GetResponseStream();
StreamReader reader = new System.IO.StreamReader(responseStream, Encoding.UTF8);
string srcString = reader.ReadToEnd();
reader.Close();
if (srcString.Contains("ticket"))
{
HP.CPS.BLL.WeiXin.CommonJsonModel model = new BLL.WeiXin.CommonJsonModel(srcString);
strjson = model.GetValue("ticket");
Session["ticketzj"] = strjson;
}
return strjson;
}public string Getsignature(string nonceStr, string timespanstr)
{
if (Session["access_tokenzj"] == null)
{
Getaccesstoken();
}
if (Session["ticketzj"] == null)
{
Getjsapi_ticket();
}
string url = Request.Url.ToString();
string str = "jsapi_ticket=" + (string)Session["ticketzj"] + "&noncestr=" + nonceStr +
"×tamp=" + timespanstr + "&url=" + url;// +"&wxref=mp.weixin.qq.com";
string singature = SHA1Util.getSha1(str);
string ss = singature;
return ss;
}class SHA1Util
{
public static String getSha1(String str)
{
//建立SHA1对象
SHA1 sha = new SHA1CryptoServiceProvider();
//将mystr转换成byte[]
ASCIIEncoding enc = new ASCIIEncoding();
byte[] dataToHash = enc.GetBytes(str);
//Hash运算
byte[] dataHashed = sha.ComputeHash(dataToHash);
//将运算结果转换成string
string hash = BitConverter.ToString(dataHashed).Replace("-", "");
return hash;
}
}class SHA1Util
{ public static String getSha1(String str)
{ //建立SHA1对象
SHA1 sha = new SHA1CryptoServiceProvider(); //将mystr转换成byte[]
ASCIIEncoding enc = new ASCIIEncoding(); byte[] dataToHash = enc.GetBytes(str); //Hash运算
byte[] dataHashed = sha.ComputeHash(dataToHash); //将运算结果转换成string
string hash = BitConverter.ToString(dataHashed).Replace("-", ""); return hash;
}
}View Code
Call example in this article:<script type="text/javascript">
wx.config({
debug: false,
appId: '<%=corpid %>',
timestamp: <%=timestamp%>,
nonceStr: '<%=nonceStr%>',
signature: '<%=signature %>',
jsApiList: ['onMenuShareTimeline', 'onMenuShareAppMessage']
});
</script>##Step 3: Call the interface
After completion After the second step is called, step three becomes very easy.
wx.ready(function(){ // config信息验证后会执行ready方法，所有接口调用都必须在config接口获得结果之后，config是一个客户端的异步操作，所以如果需要在页面加载时就调用相关接口，则须把相关接口放在ready函数中调用来确保正确执行。对于用户触发时才调用的接口，则可以直接调用，不需要放在ready函数中。});The calling example of this article is:
<script type="text/javascript" >
wx.ready(function () {
wx.onMenuShareAppMessage({
title: '<%=shareTitle %>',
desc: '<%=shareContent %>',
link: '<%=currentUrl %>',
imgUrl: '<%=shareImageUrl %>'
});
wx.onMenuShareTimeline({
title: '<%=shareContent %>',
link: '<%=currentUrl %>',
imgUrl: '<%=shareImageUrl %>'
});
})
</script><script type="text/javascript" >
wx.ready(function () {
wx.onMenuShareAppMessage({
title: '<%=shareTitle %>',
desc: '<%=shareContent %>',
link: '<%=currentUrl %>',
imgUrl: '<%=shareImageUrl %>'
});
wx.onMenuShareTimeline({
title: '<%=shareContent %>',
link: '<%=currentUrl %>',
imgUrl: '<%=shareImageUrl %>'
});
})
</script>Common problems:
1. Check whether the background is set: public account name in the upper right corner--function settings--JS interface security domain name
2. Check the code Is the appid consistent with the id of the public account backend?
3. The calling address of the picture is an absolute path (relative paths don’t seem to work).
For more WeChat development notes-calling custom sharing interface related articles, please pay attention to the PHP Chinese website!
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