public void Test()
{
var html = @"<img src=""http://karldu.cn/api/SysFile/Download?objectId=09f1f7cb-5b69-44e4-9a30-2eac785520a0"" alt=""image.png"">";
var list = HtmlUtil.GetHtmlImageUrlList(html);
Assert.IsTrue(list != null && list.Count > 0);
Assert.IsTrue(list[0] == "http://karldu.cn/api/SysFile/Download?objectId=09f1f7cb-5b69-44e4-9a30-2eac785520a0");
}
/// <summary>
/// 转换Url为微信媒体Url
/// </summary>
/// <param name="htmlContent"></param>
/// <returns></returns>
public string ConvertLocalUrlToWeChatUrl(string htmlContent)
{
var picList = HtmlUtil.GetHtmlImageUrlList(htmlContent).Distinct();
if (!picList.IsEmpty())
{
var dic = new Dictionary <string, string>(); // 替换url
picList.Each(item =>
{
var start = item.IndexOf("objectId=") + 9;
var fileid = item.Substring(start, item.Length - start);
var url = CreateData(fileid);
dic.TryAdd(item, url);
});
htmlContent = htmlContent.Replace(dic);
}
return(htmlContent);
}
/// <summary>
/// 转换微信素材地址为本地地址
/// </summary>
/// <param name="htmlContent"></param>
/// <returns></returns>
public string ConvertWeChatUrlToLocalUrl(string htmlContent)
{
#region 更换data-src为src
var imageTags = HtmlUtil.GetHtmlImagelList(htmlContent);
if (!imageTags.IsEmpty())
{
var dic = new Dictionary <string, string>(); // 替换url
imageTags.Each(item =>
{
dic.TryAdd(item, item.Replace("data-src", "src"));
});
htmlContent = htmlContent.Replace(dic);
}
#endregion
#region 更换地址为本地地址
var picList = HtmlUtil.GetHtmlImageUrlList(htmlContent).Distinct();
if (!picList.IsEmpty())
{
var dic = new Dictionary <string, string>(); // 替换url
picList.Each(item =>
{
var identity = item.Split("/")[4];
var sql = "SELECT * FROM wechat_news_material WHERE media_url like concat('%', @url, '%')";
var data = Broker.Retrieve <wechat_news_material>(sql, new Dictionary <string, object>()
{
{ "@url", identity }
});
if (data != null)
{
dic.TryAdd(item, data.local_url);
}
});
htmlContent = htmlContent.Replace(dic);
}
#endregion
return(htmlContent);
}