引用包【Json.NET】 加入 名称空间
using System;
using Newtonsoft.Json.Linq;
创建一个【JsonHelper.cs】文件:
public class JsonHelper
{
#region 提取json对象
///
/// 提取json字符串对象(尽量不用此重载)
/// 例如输入:{"1":1,"a":"aa","aa":"{\"2\":2,\"bb\":\"{\\\"3\\\":3,\\\"cc\\\":\\\"ccc\\\"}\"}"}
/// 例如输出:{"1":1,"a":"aa","aa":{"2":2,"bb":{"3":3,"cc":"ccc"}}}
///
public static JObject ExtractObj(string jsonObject)
{
return ExtractObj(JObject.Parse(jsonObject));
}
///
/// 提取json对象
/// 例如输入:{"1":1,"a":"aa","aa":"{\"2\":2,\"bb\":\"{\\\"3\\\":3,\\\"cc\\\":\\\"ccc\\\"}\"}"}
/// 例如输出:{"1":1,"a":"aa","aa":{"2":2,"bb":{"3":3,"cc":"ccc"}}}
///
public static JObject ExtractObj(JObject job)
{
//方法一:慢(3700个字符耗时2.2-2.4秒)
//foreach (var item in job)
//{
// try
// {
// string itemStr = item.Value.ToString();
// JObject itemJObj = JObject.Parse(itemStr);
// JObject robj = ExtractObj(itemJObj);
// job[item.Key] = robj;
// }
// catch
// {
// try
// {
// string itemStr = item.Value.ToString();
// JArray itemJArr = JArray.Parse(itemStr);
// JArray rArr = ExtractArr(itemJArr);
// job[item.Key] = rArr;
// }
// catch
// {
// }
// }
//}
//return job;
//方法二:快(3700个字符耗时40-60毫秒)
foreach (var item in job)
{
var itemV = item.Value;
if (itemV.Type == JTokenType.String)
{
var jtStr = itemV.ToString();
if (!IsJson(jtStr))
continue;
JToken jToken = JToken.Parse(jtStr);
if (jToken.Type == JTokenType.Object)
{
job[item.Key] = ExtractObj((JObject)jToken);
}
else if (jToken.Type == JTokenType.Array)
{
job[item.Key] = ExtractArr((JArray)jToken);
}
}
else if (itemV.Type == JTokenType.Object)
{
job[item.Key] = ExtractObj((JObject)itemV);
}
else if (itemV.Type == JTokenType.Array)
{
job[item.Key] = ExtractArr((JArray)itemV);
}
}
return job;
}
#endregion
#region 提取json数组
///
/// 提取json字符串数组(尽量不用此重载)
/// 例如输入:["5","6","[\"3\",\"4\",\"[\\\"1\\\",\\\"2\\\"]\"]"]
/// 例如输出:["5","6",["3","4",["1","2"]]]
///
public static JArray ExtractArr(string jsonArr)
{
return ExtractArr(JArray.Parse(jsonArr));
}
///
/// 提取json数组
/// 例如输入:["5","6","[\"3\",\"4\",\"[\\\"1\\\",\\\"2\\\"]\"]"]
/// 例如输出:["5","6",["3","4",["1","2"]]]
///
///
///
public static JArray ExtractArr(JArray jArr)
{
//方法一:慢(3700个字符耗时2.2-2.4秒)
//for (int i = 0; i < jArr.Count; i++)
//{
// try
// {
// string itemStr = jArr[i].ToString();
// JArray itemJArr = JArray.Parse(itemStr);
// JArray rArr = ExtractArr(itemJArr);
// jArr[i] = rArr;
// }
// catch
// {
// try
// {
// string itemStr = jArr[i].ToString();
// JObject itemJObj = JObject.Parse(itemStr);
// JObject robj = ExtractObj(itemJObj);
// jArr[i] = robj;
// }
// catch
// {
// }
// }
//}
//return jArr;
//方法二:快(3700个字符耗时40-60毫秒)
for (int i = 0; i < jArr.Count; i++)
{
JToken jToken = jArr[i];
if (jToken.Type == JTokenType.String)
{
var jtStr = jToken.ToString();
if (!IsJson(jtStr))
continue;
JToken jToken2 = JToken.Parse(jtStr);
if (jToken2.Type == JTokenType.Array)
{
jArr[i] = ExtractArr((JArray)jToken2);
}
else if (jToken2.Type == JTokenType.Object)
{
jArr[i] = ExtractObj((JObject)jToken2);
}
}
else if (jToken.Type == JTokenType.Array)
{
jArr[i] = ExtractArr((JArray)jToken);
}
else if (jToken.Type == JTokenType.Object)
{
jArr[i] = ExtractObj((JObject)jToken);
}
}
return jArr;
}
#endregion
#region 提取json对象或数组
///
/// 提取json字符串(支持对象或数组)(尽量不用此重载)
/// 例如输入:["5","6","[\"3\",\"4\",\"[\\\"1\\\",\\\"2\\\"]\"]","{\"1\":2,\"a\":\"ab\"}"]
/// 例如输出:["5","6",["3","4",["1","2"]],{"1":2,"a":"ab"}]
///
///
///
public static JToken ExtractAll(string json)
{
try
{
return ExtractAll(JToken.Parse(json));
}
catch
{
throw new Exception("不是有效的JToken对象");
}
}
///
/// 提取json字符串(支持对象或数组)
/// 例如输入:["5","6","[\"3\",\"4\",\"[\\\"1\\\",\\\"2\\\"]\"]","{\"1\":2,\"a\":\"ab\"}"]
/// 例如输出:["5","6",["3","4",["1","2"]],{"1":2,"a":"ab"}]
///
///
///
public static JToken ExtractAll(JToken jToken)
{
if (jToken.Type == JTokenType.String)
{
jToken = JToken.Parse(jToken.ToString());
}
if (jToken.Type == JTokenType.Object)
{
return ExtractObj((JObject)jToken);
}
else if (jToken.Type == JTokenType.Array)
{
return ExtractArr((JArray)jToken);
}
else
{
throw new Exception("暂不支持提取[" + jToken.Type.ToString() + "]类型");
}
}
#endregion
#region 验证
///
/// 是否为json(开头是{或[)
///
public static bool IsJson(string json)
{
json = json.Trim();
if (string.IsNullOrEmpty(json))
return false;
var t = json.First();
if (t == '{' || t == '[')
return true;
return false;
}
#endregion