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简介

• 该方法用于比较两个Json文件是否完全一致，仅考虑内容
• 若两个文件中的内容只是顺序不一致，内容是一样的，那么也代表这两个文件是相等的

实现代码

• 调用

using CompareJsonFiles;Console.WriteLine("================= 输入信息 ===================");Console.WriteLine("请输入源Json文件路径：");
var sourcePath = Console.ReadLine();Console.WriteLine($"{Environment.NewLine}请输入目标Json文件路径：");
var targetPath = Console.ReadLine();Console.WriteLine($"{Environment.NewLine}您输入的源路径为：{sourcePath}，目标路径为：{targetPath}");Console.WriteLine($"================= 输入信息 =================== {Environment.NewLine}");CompareJsonHelper.CompareJsonFiles(sourcePath?.Trim(), targetPath?.Trim());

• 实现

using Newtonsoft.Json.Linq;namespace CompareJsonFiles;/// <summary>
/// 比对Json文件的帮助类
/// </summary>
public static class CompareJsonHelper
{/// <summary>/// 比较两个JSON文件的内容/// </summary>/// <param name="sourcePath">源文件</param>/// <param name="targetPath">目标文件</param>public static void CompareJsonFiles(string? sourcePath, string? targetPath){if (!IsExistForJsonFile(sourcePath, targetPath)){return;}// 加载并解析JSON文件var json1 = JToken.Parse(File.ReadAllText(sourcePath));var json2 = JToken.Parse(File.ReadAllText(targetPath));// 标准化JSON结构var normalizedSourceJson = NormalizeJson(json1);var normalizedTargetJson = NormalizeJson(json2);// 比较JSON内容var differences = FindDifferences(normalizedSourceJson, normalizedTargetJson, string.Empty);// 输出差异if (differences.Count == 0){Console.WriteLine("======================== 两个文件内容一致！==============================");}else{Console.WriteLine("============================= 两个文件存在以下差异：=================================");foreach (var diff in differences){Console.WriteLine(diff);}}}/// <summary>/// 监测源文件和目标文件是不是Json文件/// </summary>/// <param name="sourcePath"></param>/// <param name="targetPath"></param>/// <returns></returns>private static bool IsExistForJsonFile(string? sourcePath, string? targetPath){if (string.IsNullOrWhiteSpace(sourcePath)){Console.WriteLine("错误信息：源文件路径不能为空");return false;}if (string.IsNullOrWhiteSpace(targetPath)){Console.WriteLine("错误信息：目标文件路径不能为空");return false;}if (!System.IO.File.Exists(sourcePath)){Console.WriteLine("错误信息：源文件不存在");return false;}if (!System.IO.File.Exists(targetPath)){Console.WriteLine("错误信息：目标文件不存在");return false;}if (Path.GetExtension(sourcePath) != ".json"){Console.WriteLine("错误信息：源文件不是Json文件");return false;}if (Path.GetExtension(targetPath) != ".json"){Console.WriteLine("错误信息：目标文件不是Json文件");return false;}return true;}/// <summary>/// 标准化JSON结构以便比较/// </summary>/// <param name="token"></param>/// <returns></returns>private static JToken NormalizeJson(JToken token){switch (token.Type){case JTokenType.Object:var sortedObject = new JObject();var properties = token.Children<JProperty>().ToList();properties.Sort((x, y) => string.Compare(x.Name, y.Name, StringComparison.Ordinal));foreach (var prop in properties){sortedObject.Add(prop.Name, NormalizeJson(prop.Value));}return sortedObject;case JTokenType.Array:var sortedArray = new JArray(token.Select(NormalizeJson).OrderBy(t => t.ToString()));return sortedArray;default:return token.DeepClone();}}/// <summary>/// 查找两个JSON之间的差异/// </summary>/// <param name="source"></param>/// <param name="target"></param>/// <param name="path"></param>/// <returns></returns>private static List<string> FindDifferences(JToken source, JToken target, string path){var differences = new List<string>();if (source.Type != target.Type){differences.Add($"路径 {path} 类型不同: {source.Type} 和 {target.Type}");return differences;}switch (source.Type){case JTokenType.Object:foreach (var property in ((JObject)source).Properties()){if (!((JObject)target).TryGetValue(property.Name, out JToken? tryTargetValue)){differences.Add($"路径 {path}.{property.Name} 在第二个文件中不存在");continue;}differences.AddRange(FindDifferences(property.Value, tryTargetValue, $"{path}.{property.Name}"));}foreach (var property in ((JObject)target).Properties()){if (!((JObject)source).TryGetValue(property.Name, out _)){differences.Add($"路径 {path}.{property.Name} 在第一个文件中不存在");}}break;case JTokenType.Array:var arraySource = source as JArray;var arrayTarget = target as JArray;for (var i = 0; i < Math.Max(arraySource?.Count ?? 0, arrayTarget?.Count ?? 0); i++){if (i >= arraySource?.Count || i >= arrayTarget?.Count){differences.Add($"路径 {path}[{i}] 数组长度不一致");continue;}differences.AddRange(FindDifferences(arraySource![i], arrayTarget![i], $"{path}[{i}]"));}break;default:if (!JToken.DeepEquals(source, target)){differences.Add($"路径 {path} 值不同: {source} 和 {target}");}break;}return differences;}
}