类型的未处理的异常“Newtonsoft.Json.JsonReaderException”
问题描述：
我有下面这样的代码：类型的未处理的异常“Newtonsoft.Json.JsonReaderException”
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Amazon.DynamoDBv2;
using Amazon.DynamoDBv2.Model;
using Amazon.Runtime;
using System.IO;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
namespace ConsoleApplication2
{
class Program
{
static void Main(string[] args)
{
using (FileStream fs = new FileStream(@"c:\Users\\Desktop\abc.json", FileMode.Open, FileAccess.Read))
using (StreamReader sr = new StreamReader(fs))
using (JsonTextReader reader = new JsonTextReader(sr))
{
while (reader.Read())
{
if (reader.TokenType == JsonToken.StartObject)
{
JObject obj = JObject.Load(reader);
var device_id = obj["device_id"];
Console.WriteLine(device_id);
}
}
Console.ReadLine();
}
}
}
}
文件abc.json含量也低于
{"_id":{"$oid":"552fcdd61718285a7402aeea"},"gateway_id":2,"device_id":28,"date_time":1.429196246258e+12,"data":[{"r":203,"v":2509},{"r":221,"v":3037},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":0},{"r":1001,"v":0},{"r":1002,"v":3},{"r":1003,"v":21895},{"r":1004,"v":2500}]}
{"_id":{"$oid":"552fcdd61718285a7402aeeb"},"gateway_id":2,"device_id":29,"date_time":1.429196246989e+12,"data":[{"r":203,"v":2468},{"r":221,"v":2989},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":0},{"r":1001,"v":0},{"r":1002,"v":3},{"r":1003,"v":8841},{"r":1004,"v":2400}]}
{"_id":{"$oid":"552fcdd71718285a7402aeec"},"gateway_id":2,"device_id":30,"date_time":1.429196247718e+12,"data":[{"r":203,"v":61536},{"r":221,"v":3055},{"r":400,"v":129},{"r":401,"v":32},{"r":402,"v":18064},{"r":403,"v":16435},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":1},{"r":1001,"v":1},{"r":1002,"v":3},{"r":1003,"v":20898},{"r":1004,"v":2100}]}
{"_id":{"$oid":"552fcde31718285a7402aeed"},"gateway_id":1,"device_id":28,"date_time":1.429196259149e+12,"data":[{"r":203,"v":2419},{"r":221,"v":2969},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":1},{"r":1001,"v":1},{"r":1002,"v":3},{"r":1003,"v":26674},{"r":1004,"v":1400}]}
{"_id":{"$oid":"552fcde31718285a7402aeee"},"gateway_id":1,"device_id":29,"date_time":1.429196259879e+12,"data":[{"r":203,"v":2440},{"r":221,"v":2882},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":1},{"r":1001,"v":1},{"r":1002,"v":3},{"r":1003,"v":22319},{"r":1004,"v":2200}]}
该错误是在未来的行（reader.Read（））。此外，上述代码是否可以读取最大1 GB的大型json文件？谢谢
答
我有固定的reader.SupportMultipleContent =真正的问题;
答
你存储json错误。尝试使用它
[{"_id":{"$oid":"552fcdd61718285a7402aeea"},"gateway_id":2,"device_id":28,"date_time":1.429196246258e+12,"data":[{"r":203,"v":2509},{"r":221,"v":3037},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":0},{"r":1001,"v":0},{"r":1002,"v":3},{"r":1003,"v":21895},{"r":1004,"v":2500}]},
{"_id":{"$oid":"552fcdd61718285a7402aeeb"},"gateway_id":2,"device_id":29,"date_time":1.429196246989e+12,"data":[{"r":203,"v":2468},{"r":221,"v":2989},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":0},{"r":1001,"v":0},{"r":1002,"v":3},{"r":1003,"v":8841},{"r":1004,"v":2400}]},
{"_id":{"$oid":"552fcdd71718285a7402aeec"},"gateway_id":2,"device_id":30,"date_time":1.429196247718e+12,"data":[{"r":203,"v":61536},{"r":221,"v":3055},{"r":400,"v":129},{"r":401,"v":32},{"r":402,"v":18064},{"r":403,"v":16435},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":1},{"r":1001,"v":1},{"r":1002,"v":3},{"r":1003,"v":20898},{"r":1004,"v":2100}]},
{"_id":{"$oid":"552fcde31718285a7402aeed"},"gateway_id":1,"device_id":28,"date_time":1.429196259149e+12,"data":[{"r":203,"v":2419},{"r":221,"v":2969},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":1},{"r":1001,"v":1},{"r":1002,"v":3},{"r":1003,"v":26674},{"r":1004,"v":1400}]},
{"_id":{"$oid":"552fcde31718285a7402aeee"},"gateway_id":1,"device_id":29,"date_time":1.429196259879e+12,"data":[{"r":203,"v":2440},{"r":221,"v":2882},{"r":400,"v":0},{"r":401,"v":0},{"r":402,"v":0},{"r":403,"v":0},{"r":404,"v":0},{"r":405,"v":0},{"r":406,"v":0},{"r":407,"v":0},{"r":408,"v":0},{"r":409,"v":0},{"r":1000,"v":1},{"r":1001,"v":1},{"r":1002,"v":3},{"r":1003,"v":22319},{"r":1004,"v":2200}]}]
+0
至于大文件：我不建议这样做，因为文件的大部分不是数据，而是字段的名称。使用db –
你可以发布错误消息的详细信息吗？ –
JsonReaderException通常抛出一个相关的错误消息，通常会告诉你到底发生了什么错误。请与我们分享所有例外情况。 – Maritim
@Maritim附加信息：完成阅读JSON内容后遇到的其他文本：{。路径''，第2行，位置0.我认为这是更详细的 –