/// <summary>
/// 读取本地AppSettings中的值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="key"></param>
/// <param name="defaultValue"></param>
/// <returns></returns>
public static T AppSettings <T>(string key, T defaultValue = default(T))
{
string value = ConfigurationManager.AppSettings[key];
if (value == null)
{
return(defaultValue);
}
DefalutDataConverter converter = new DefalutDataConverter();
return((T)converter.Parse(typeof(T), value));
}
public static T Get <T>(this IDictionary <string, string> dic, string key, T defaultValue = default(T))
{
if (dic == null)
{
return(defaultValue);
}
if (!dic.ContainsKey(key))
{
return(defaultValue);
}
DefalutDataConverter converter = new DefalutDataConverter();
return((T)converter.Parse(typeof(T), dic[key]));
}
public object Parse(Type type, string value)
{
if (string.IsNullOrEmpty(value))
{
return(null);
}
if (!value.Contains("="))
{
throw new Exception("格式错误，正确格式形如：" +
"Key1=Value1" + Environment.NewLine +
"Key2=Value2");
}
value = value.Replace("\r\n", "\n");
string[] items = value.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
if (type == typeof(IDictionary <string, string>))
{
IDictionary <string, string> dic = new Dictionary <string, string>(StringComparer.CurrentCultureIgnoreCase);
foreach (string item in items)
{
if (!value.Contains("="))
{
continue;
}
string[] keyValuePairs = item.Split(new char[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
if (keyValuePairs.Length != 2)
{
continue;
}
string strKey = keyValuePairs[0].Trim();
string strValue = keyValuePairs[1].Trim();
dic.Add(strKey, strValue);
}
return(dic);
}
else
{
object obj = Activator.CreateInstance(type, true);
foreach (string item in items)
{
if (!value.Contains("="))
{
continue;
}
string[] keyValuePairs = item.Split(new char[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
if (keyValuePairs.Length != 2)
{
continue;
}
string strKey = keyValuePairs[0].Trim();
string strValue = keyValuePairs[1].Trim();
PropertyInfo propertyInfo = type.GetProperties().FirstOrDefault(m => m != null && string.Compare(m.GetAlias(), strKey, StringComparison.OrdinalIgnoreCase) == 0);
if (propertyInfo == null)
{
continue;
}
DefalutDataConverter converter = new DefalutDataConverter();
object itemValue = converter.Parse(propertyInfo.PropertyType, strValue);
propertyInfo.SetValue(obj, itemValue, null);
}
return(obj);
}
}