我有一个json数组,我想添加到其中,然后将内容写入文件。将内容添加到数组中没有问题,但使用JsonSerializer.Serialize方法写入文件时会出现异常:
ArgumentException:无法将Newtonsoft.Json.Linq.JObject添加到NewtonsoftJson.Lin.JObject.
这发生在我下面代码的最后一行。"jSerializer.Serialize(o.CreateWriter(),o);"
JSON-
{
"ArrayToManipulate":
[
{
"Name":"Value"
},
{
"Name":"value"
}
]
}
操作JSON对象的代码
JContainer o = (JObject)JToken.ReadFrom(new JsonTextReader(reader));
JArray x = (JArray)o["ArrayToManipulate"];
ContentObject newObject = new ContentObject(){Name="Value"};
JToken tokenToAdd = JToken.Parse(JsonConvert.SerializeObject(newObject, Formatting.Indented));
x.Add(tokenToAdd);
JsonSerializer jSerializer = new JsonSerializer();
jSerializer.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
jSerializer.Serialize(o.CreateWriter(), o);
我是不是搞错了?
通过调用JContainer.CreateWriter
获得的写入程序不会按照您的意愿写入文件,而是写入容器本身的写入程序。您需要类似以下代码的东西——基于文件创建一个"常规"文本编写器,然后基于此创建一个JsonWriter
。
const string JSON = "{"ArrayToManipulate":[{"Name":"Value"},{"Name":"value"}]}";
var reader = new StringReader(JSON);
JContainer o = (JObject)JToken.ReadFrom(new JsonTextReader(reader));
JArray x = (JArray)o["ArrayToManipulate"];
ContentObject newObject = new ContentObject() { Name = "Value" };
JToken tokenToAdd = JToken.Parse(JsonConvert.SerializeObject(newObject, Formatting.Indented));
x.Add(tokenToAdd);
JsonSerializer jSerializer = new JsonSerializer();
jSerializer.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
using (var w = File.CreateText(@"C:tempa.json"))
{
using (var jw = new JsonTextWriter(w))
{
jSerializer.Serialize(jw, o);
}
}