/// <summary>
/// 读取更新时间
/// 从 JSON 文件
/// </summary>
/// <param name="icp">ICacheParam</param>
/// <returns></returns>
public static DateTime ReadWriteTimeFormJson(ICacheParam icp)
{
try
{
//JSON路径
string jsonPath = icp.GetJsonFile();
FileInfo fi = new FileInfo(jsonPath);
return(fi.LastWriteTime);
}
catch (System.Exception ex)
{
throw new ParamException("读取参数文件错误", ex);
}
}
/// <summary>
/// 读取参数列表
/// 从 JSON 文件
/// </summary>
/// <param name="icp">ICacheParam</param>
/// <param name="listProperty">(可选)属性列表</param>
/// <returns></returns>
public static List <AqiParam> CreateListFormJson(ICacheParam icp, params string[] listProperty)
{
List <AqiParam> listParam = new List <AqiParam>();
string propertyPath = String.Join(".", listProperty);
try
{
//JSON路径
string jsonPath = icp.GetJsonFile();
if (!File.Exists(jsonPath))
{
return(listParam);
}
//读取JSON
StreamReader sr = new StreamReader(jsonPath);
string jsonText = sr.ReadToEnd();
//转JSON Object
JObject jo = JObject.Parse(jsonText);
JToken jt = jo.SelectToken(propertyPath);
if (jt == null || !jt.HasValues)
{
return(null);
}
else if (jt is JArray)
{
//读取集合(任意个参数)
JEnumerable <JToken> je = jt.Children();
AqiParam baseAP = null;
foreach (JToken j in je)
{
AqiParam ap = createParamFormJsonObject(j as JObject, baseAP);
if (ap != null)
{
if (ap.IsTemplate)
{
baseAP = ap;
}
else
{
listParam.Add(ap);
}
}
}
}
else if (jt is JObject)
{
//读取对象(仅一个参数)
AqiParam ap = createParamFormJsonObject(jt as JObject);
if (ap != null)
{
listParam.Add(ap);
}
}
}
catch (System.Exception ex)
{
throw new ParamException("参数创建错误", ex);
}
return(listParam);
}