json字符串和字典类型的相互转换

在开发过程中,有时候需要将json字符串转为字典类型,反之亦然,通常采用.Net的开源类库Newtonsoft.Json进行序列化,这里我也是采用这个,不过我更喜欢写扩展方法方便在项目的调用。

 

首先新建一个扩展类JsonExtensions(类名自己按照自己喜好定义):

 public static class JsonExtensions
    {
        /// <summary>
        /// 将字典类型序列化为json字符串
        /// </summary>
        /// <typeparam name="TKey">字典key</typeparam>
        /// <typeparam name="TValue">字典value</typeparam>
        /// <param name="dict">要序列化的字典数据</param>
        /// <returns>json字符串</returns>
        public static string SerializeDictionaryToJsonString<TKey, TValue>(Dictionary<TKey, TValue> dict)
        {
            if (dict.Count == 0)
                return "";

            string jsonStr = JsonConvert.SerializeObject(dict);
            return jsonStr;
        }

        /// <summary>
        /// 将json字符串反序列化为字典类型
        /// </summary>
        /// <typeparam name="TKey">字典key</typeparam>
        /// <typeparam name="TValue">字典value</typeparam>
        /// <param name="jsonStr">json字符串</param>
        /// <returns>字典数据</returns>
        public static Dictionary<TKey, TValue> DeserializeStringToDictionary<TKey, TValue>(string jsonStr)
        {
            if (string.IsNullOrEmpty(jsonStr))
                return new Dictionary<TKey, TValue>();

            Dictionary<TKey, TValue> jsonDict = JsonConvert.DeserializeObject<Dictionary<TKey, TValue>>(jsonStr);

            return jsonDict;

        }
    }

 

 接下来就调用这两个扩展方法,看看是否可行,这里我写的是一个单元测试,方便用于测试,写的一般,大家可以自行回去测试:

[TestClass]
public class DictionaryTest { [TestMethod] public void Can_Serialize_Deserialize() { Dictionary<string, string> paramDictionary = new Dictionary<string, string>(); paramDictionary.Add("one", "productName"); paramDictionary.Add("two", "productColor"); paramDictionary.Add("three", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")); paramDictionary.Add("four", DateTime.Now.AddDays(5).ToString("yyyy-MM-dd HH:mm:ss")); string jsonStr = JsonExtensions.SerializeDictionaryToJsonString<string, string>(paramDictionary); var jsonDict = JsonExtensions.DeserializeStringToDictionary<string, string>(jsonStr); List<string> dict1 = new List<string>(); foreach (var item in paramDictionary) { dict1.Add(paramDictionary[item.Key]); } List<string> dict2 = new List<string>(); foreach (var item in jsonDict) { dict2.Add(jsonDict[item.Key]); } int intersect = dict1.Intersect(dict2).Count(); // 交集 int except = dict1.Except(dict2).Count(); // 差集 int union = dict1.Union(dict2).Count(); // 并集 Assert.AreEqual(4, intersect); Assert.AreEqual(0, except); Assert.AreEqual(4, union); Assert.AreEqual("productName", dict2[0]); Assert.AreEqual("productColor", dict2[1]); Assert.AreEqual(4, dict2.Count); } }

输出结果:

 

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posted @ 2016-06-14 23:22  鱼头鱼尾  阅读(6369)  评论(0编辑  收藏  举报
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