C#返回绝对URL地址

2019-11-17 04:18:29

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/// <summary>

/// 返回绝对URL地址

/// </summary>

/// <param name="fromUrl">来源URL</param>

/// <param name="url">搜索到的地址</param>

/// <returns>绝对URL地址</returns>

public static string GetABSUrl(string fromUrl, string url)

{

    string _url = "";

    string _domain = "";

    string _path = "";

    if (!CheckURL(fromUrl))

    {

        throw new Exception("来源URL格式不正确");

    }

    else

    {

        _domain = fromUrl.Remove(fromUrl.IndexOf("/", 7));

        _path = fromUrl.Remove(fromUrl.LastIndexOf("/"));

    }

    if (url == "")

    {

        _url = "";

    }

    else if(url.IndexOf(@"http://")==0)

    {

        _url = url;

    }

    else if (url.IndexOf(@"/") == 0)

    {

        _url = _domain + url;

    }

    else

    {

        _url = _path + "/" + url;

    }

    return _url;

}

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