PropertyPathResolver.cs
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using System;
using System.Collections.Generic;
using System.Reflection;
namespace Rcs.Shared.Utils
{
/// <summary>
/// 属性路径解析器 - 支持点号分隔的嵌套属性访问
/// @author zzy
/// </summary>
public static class PropertyPathResolver
{
/// <summary>
/// 属性信息缓存，提升反射性能
/// </summary>
private static readonly Dictionary<(Type, string), PropertyInfo?> PropertyCache = new();
private static readonly object CacheLock = new();
/// <summary>
/// 根据属性路径获取对象的属性值
/// </summary>
/// <param name="source">源对象</param>
/// <param name="path">属性路径，支持点号分隔（如：Task.LoadType、Robot.MapNode.NodeCode）</param>
/// <returns>属性值，如果路径无效则返回null</returns>
public static object? GetValue(object? source, string path)
{
if (source == null || string.IsNullOrEmpty(path))
return null;
var current = source;
var parts = path.Split('.');
foreach (var part in parts)
{
if (current == null)
return null;
var prop = GetCachedProperty(current.GetType(), part);
if (prop == null)
return null;
current = prop.GetValue(current);
}
return current;
}
/// <summary>
/// 获取缓存的属性信息
/// </summary>
private static PropertyInfo? GetCachedProperty(Type type, string propertyName)
{
var key = (type, propertyName);
lock (CacheLock)
{
if (PropertyCache.TryGetValue(key, out var cached))
return cached;
var prop = type.GetProperty(propertyName, BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);
PropertyCache[key] = prop;
return prop;
}
}
/// <summary>
/// 尝试将值转换为指定类型
/// </summary>
public static object? ConvertValue(object? value, Type targetType)
{
if (value == null)
return null;
if (targetType.IsInstanceOfType(value))
return value;
try
{
// 处理可空类型
var underlyingType = Nullable.GetUnderlyingType(targetType) ?? targetType;
return Convert.ChangeType(value, underlyingType);
}
catch
{
return value;
}
}
}
}