微信公众号开发之设置自定义菜单实例代码【java版】

微信公众号开发之设置自定义菜单实例代码【java版】

本实例是为了实现在管理后台实现微信菜单的添加删除管理。

1、首先我们需要新建一个数据库表用于存放menu菜单项

可包含的字段有id、父类id、name、排序、是否显示、类型（view、click）、链接、adddate

注意后台存menu菜单数据时，parentId=-1为一级菜单，或parendId为一级菜单的id作为该一级菜单下的二级菜单

2、在设置菜单时需要向微信接口传menujson字符串，所以要先拼接字符串，后台定义一个creatMenu()

public bool creatMenu()

{

string menuJson = "";

//这里默认parentId=-1为最外层菜单，isactive=1为显示,responseType=1为click类型

DataTable dtAMenu = Service.SelectDataTable("id, name, responseType, jsonStr,url", "WEIXINMENU", " parentId=-1 and isactive=1 order by sort");

if (dtAMenu.Rows.Count > 0)

{

menuJson = "{\"button\":[";

for (int i = 0; i < dtAMenu.Rows.Count; i++)

{

DataTable dtBMenu = Service.SelectDataTable("id, name, responseType, jsonStr,url", wx, " parentId=" + dtAMenu.Rows[i]["id"].ToString() + " and isactive=1 order by sort");

if (dtBMenu.Rows.Count > 0)

{

menuJson += "{\"name\":\"" + dtAMenu.Rows[i]["name"].ToString() + "\",\"sub_button\":[";

for (int j = 0; j < dtBMenu.Rows.Count; j++)

{

if (Convert.ToInt32(dtBMenu.Rows[j]["responseType"]) == 2)

{

menuJson += "{\"type\":\"view\",\"name\":\"" + dtBMenu.Rows[j]["name"].ToString() + "\",\"url\":\"" + dtBMenu.Rows[j]["jsonStr"].ToString() + "\"},";

}

else

{

menuJson += "{\"type\":\"click\",\"name\":\"" + dtBMenu.Rows[j]["name"].ToString() + "\",\"key\":\"eventKey_" + dtBMenu.Rows[j]["id"].ToString() + "\"},";

}

}

menuJson = menuJson.TrimEnd(',');

menuJson += "]},";

}

else

{

//if (Convert.ToInt32(dtAMenu.Rows[i]["responseType"]) == 2)

//{

menuJson += "{\"type\":\"view\",\"name\":\"" + dtAMenu.Rows[i]["name"].ToString() + "\",\"url\":\"" + dtAMenu.Rows[i]["jsonStr"].ToString() + "\"},";

//}

//else

//{

// menuJson += "{\"type\":\"click\",\"name\":\"" + dtAMenu.Rows[i]["name"].ToString() + "\",\"key\":\"eventKey_" + dtAMenu.Rows[i]["id"].ToString() + "\"},";

//}

}

dtBMenu.Dispose();

}

dtAMenu.Dispose();

menuJson = menuJson.TrimEnd(',');

menuJson += "]}";

menuJson = menuJson.Trim();

return requstZmToCreatMent(menuJson);

}

else

{

return false;

}

}

3、获取到menujson字符串后调用微信接口创建菜单，需先获取assess token,有关assess token获取可参考：获取AccessToken

///

/// 向微信服务器请求创建自定义菜单

///

///

///

///

private bool requstZmToCreatMent(string jsonStr)

{

try

{

var AccessToken = "";//accesstoken需例外获取，一般可开始时获取后存数据库，下次从数据库取，注意accesstoken有效期为7200秒

//声明一个HttpWebRequest请求

string interfaceUrl = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" + AccessToken;

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(interfaceUrl);

//设置连接超时时间

request.Timeout = 30000;

request.KeepAlive = true;

Encoding encodeType = Encoding.GetEncoding("UTF-8");

request.Headers.Set("Pragma", "no-cache");

request.Method = "POST";

request.ContentType = "application/x-www-form-urlencoded";

request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; Maxthon; .NET CLR 1.1.4322); Http STdns";

request.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";

request.CookieContainer = new CookieContainer();

byte[] Bytes = encodeType.GetBytes(jsonStr);

request.ContentLength = Bytes.Length;

request.AllowAutoRedirect = true;

//发送数据

using (Stream writer = request.GetRequestStream())

{

writer.Write(Bytes, 0, Bytes.Length);

writer.Close();

}

StringBuilder strb = new StringBuilder();

//接收数据

using (Stream reader = request.GetResponse().GetResponseStream())

{

StreamReader sr = new StreamReader(reader, encodeType);

strb.Append(sr.ReadToEnd());

sr.Close();

reader.Close();

}

if ((strb.ToString().IndexOf("\"errcode\":42001") != -1) || (strb.ToString().IndexOf("\"errcode\":40001") != -1) || (strb.ToString().IndexOf("\"errcode\":40014") != -1) || (strb.ToString().IndexOf("\"errcode\":41001") != -1)) //access_token错误

{

// AccessToken = getAccessToken();

getzmAccessToken();

return requstZmToCreatMent(jsonStr);

}

else

{

if (strb.ToString() == "{\"errcode\":0,\"errmsg\":\"ok\"}")

{

return true;

}

else

{

return false;

}

}

}

catch (Exception exp)

{

return false;

}

}

总结

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