Camera Information System
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using Newtonsoft.Json.Linq;
using System.Text;
namespace Cis.Core;
/// <summary>
/// 对象拓展
/// </summary>
[SuppressSniffer]
public static class ObjectExtension
{
/// <summary>
/// 判断类型是否实现某个泛型
/// </summary>
/// <param name="type">类型</param>
/// <param name="generic">泛型类型</param>
/// <returns>bool</returns>
public static bool HasImplementedRawGeneric(this Type type, Type generic)
{
// 检查接口类型
var isTheRawGenericType = type.GetInterfaces().Any(IsTheRawGenericType);
if (isTheRawGenericType) return true;
// 检查类型
while (type != null && type != typeof(object))
{
isTheRawGenericType = IsTheRawGenericType(type);
if (isTheRawGenericType) return true;
type = type.BaseType;
}
return false;
// 判断逻辑
bool IsTheRawGenericType(Type type) => generic == (type.IsGenericType ? type.GetGenericTypeDefinition() : type);
}
/// <summary>
/// 将字典转化为QueryString格式
/// </summary>
/// <param name="dict"></param>
/// <param name="urlEncode"></param>
/// <returns></returns>
public static string ToQueryString(this Dictionary<string, string> dict, bool urlEncode = true)
{
return string.Join("&", dict.Select(p => $"{(urlEncode ? p.Key?.UrlEncode() : "")}={(urlEncode ? p.Value?.UrlEncode() : "")}"));
}
/// <summary>
/// 将字符串URL编码
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string UrlEncode(this string str)
{
return string.IsNullOrEmpty(str) ? "" : System.Web.HttpUtility.UrlEncode(str, Encoding.UTF8);
}
/// <summary>
/// List转DataTable
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="list"></param>
/// <returns></returns>
public static DataTable ToDataTable<T>(this List<T> list)
{
DataTable result = new();
if (list.Count > 0)
{
// result.TableName = list[0].GetType().Name; // 表名赋值
PropertyInfo[] propertys = list[0].GetType().GetProperties();
foreach (PropertyInfo pi in propertys)
{
Type colType = pi.PropertyType;
if (colType.IsGenericType && colType.GetGenericTypeDefinition() == typeof(Nullable<>))
{
colType = colType.GetGenericArguments()[0];
}
if (IsIgnoreColumn(pi))
continue;
result.Columns.Add(pi.Name, colType);
}
for (int i = 0; i < list.Count; i++)
{
ArrayList tempList = new();
foreach (PropertyInfo pi in propertys)
{
if (IsIgnoreColumn(pi))
continue;
object obj = pi.GetValue(list[i], null);
tempList.Add(obj);
}
object[] array = tempList.ToArray();
result.LoadDataRow(array, true);
}
}
return result;
}
/// <summary>
/// 对象序列化成Json字符串
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static string ToJson(object obj)
{
return JSON.GetJsonSerializer().Serialize(obj);
}
/// <summary>
/// Json字符串反序列化成对象
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="json"></param>
/// <returns></returns>
public static T ToObject<T>(this string json)
{
return JSON.GetJsonSerializer().Deserialize<T>(json);
}
/// <summary>
/// 字串反序列化成linq对象
/// </summary>
/// <param name="Json">字串</param>
/// <returns></returns>
public static JObject ToJObject(this string Json)
{
return !string.IsNullOrEmpty(Json) ? JObject.Parse(Json.Replace("&nbsp;", "")) : JObject.Parse("{}");
}
/// <summary>
/// 排除SqlSugar忽略的列
/// </summary>
/// <param name="pi"></param>
/// <returns></returns>
private static bool IsIgnoreColumn(PropertyInfo pi)
{
var sc = pi.GetCustomAttributes<SugarColumn>(false).FirstOrDefault(u => u.IsIgnore == true);
return sc != null;
}
}