微信分享网页时自定义缩略图和简介（.net版本） - .NET

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微信分享网页时自定义缩略图和简介（.net版本）(三)

2019-09-30 16:50:23 【大中小】浏览:199次

che(string CacheKey) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; return objCache[CacheKey]; } /// <summary> /// 设置当前应用程序指定CacheKey的Cache值 /// </summary> /// <param name="CacheKey"> /// <param name="objObject"> public static void SetCache(string CacheKey, object objObject) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Insert(CacheKey, objObject); } /// <summary> /// 设置当前应用程序指定CacheKey的Cache值 /// </summary> /// <param name="CacheKey"> /// <param name="objObject"> public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration); } /// <summary> /// 设置数据缓存 /// </summary> public static void SetCache(string CacheKey, object objObject, int timeout = 7200) { try { if (objObject == null) return; var objCache = HttpRuntime.Cache; //相对过期 //objCache.Insert(cacheKey, objObject, null, DateTime.MaxValue, timeout, CacheItemPriority.NotRemovable, null); //绝对过期时间 objCache.Insert(CacheKey, objObject, null, DateTime.Now.AddSeconds(timeout), TimeSpan.Zero, CacheItemPriority.High, null); } catch (Exception) { //throw; } } /// <summary> /// 清除单一键缓存 /// </summary> /// <param name="key"> public static void RemoveKeyCache(string CacheKey) { try { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Remove(CacheKey); } catch { } } ///// <summary> ///// 清除所有缓存 ///// </summary> //public static void RemoveAllCache() //{ // System.Web.Caching.Cache _cache = HttpRuntime.Cache; // IDictionaryEnumerator CacheEnum = _cache.GetEnumerator(); // if (_cache.Count > 0) // { // ArrayList al = new ArrayList(); // while (CacheEnum.MoveNext()) // { // al.Add(CacheEnum.Key); // } // foreach (string key in al) // { // _cache.Remove(key); // } // } //} /// <summary> /// 清除所有缓存 /// </summary> public static void RemoveAllCache() { var cache = HttpRuntime.Cache; var cacheEnum = cache.GetEnumerator(); while (cacheEnum.MoveNext()) { cache.Remove(cacheEnum.Key.ToString()); } } /// <summary> /// 以列表形式返回已存在的所有缓存 /// </summary> /// <returns></returns> public static ArrayList ShowAllCache() { ArrayList al = new ArrayList(); System.Web.Caching.Cache _cache = HttpRuntime.Cache; if (_cache.Count > 0) { IDictionaryEnumerator CacheEnum = _cache.GetEnumerator(); while (CacheEnum.MoveNext()) { al.Add(CacheEnum.Key); } } return al; } } } View Code

Models，WeixinSignatureConfig

namespace WeixinShare.Models
{
    public class WeixinSignatureConfig
    {
        public string appId { get; set; }
        public string nonceStr { get; set; }
        public string timestamp { get; set; }
        public string signature { get; set; }
    }
}

View Code

步骤4：网页前端调用微信JSSDK

微信JS-SDK是微信公众平台面向网页开发者提供的基于微信内的网页开发工具包。

通过使用微信JS-SDK，网页开发者可借助微信高效地使用拍照、选图、语音、位置等手机系统的能力，同时可以直接使用微信分享

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