输入json是（json是真实数据的一小部分，真实json非常长且层次更大。json行超过30k）
{
"data": {
"getUsers": [
{
"userProfileDetail": {
"userStatus": {
"name": "Expired"
},
"userStatusDate": "2017-04-04T07:48:25+00:00",
"lastAttestationDate": "2019-02-01T03:50:42.6049634-05:00"
},
"userInformation": {
"Id": 13610875,
"lastName": "************",
"suffix": null,
"gender": "FEMALE",
"birthDate": "1970-01-01T00:01:00+00:00",
"ssn": "000000000",
"ethnicity": "INVALID_REFERENCE_VALUE",
"languagesSpoken": null,
"personalEmail": null,
"otherNames": null,
"userType": {
"name": "APN"
},
"primaryuserState": "CO",
"otheruserState": [
"CO"
],
"practiceSetting": "INPATIENT_ONLY",
"primaryEmail": "*****@*****.com"
}
},
{
"userProfileDetail": {
"userStatus": {
"name": "Expired newwwwwwwwwwww"
},
"userStatusDate": "2017-04-04T07:48:25+00:00",
"lastAttestationDate": "2019-02-01T03:50:42.6049634-05:00"
},
"userInformation": {
"Id": 13610875,
"lastName": "************",
"suffix": null,
"gender": "FEMALE",
"birthDate": "1970-01-01T00:01:00+00:00",
"ssn": "000000000",
"ethnicity": "INVALID_REFERENCE_VALUE",
"languagesSpoken": null,
"personalEmail": null,
"otherNames": null,
"userType": {
"name": "APN"
},
"primaryuserState": "CO",
"otheruserState": [
"CO"
],
"practiceSetting": "INPATIENT_ONLY",
"primaryEmail": "*****@*****.com"
}
}
]
}
}
代码是
var obj = JObject.Parse(json);
// Collect column titles: all property names whose values are of type JValue, distinct, in order of encountering them.
var jsonValues = obj.DescendantsAndSelf().OfType<JProperty>().Where(p => p.Value is JValue).GroupBy(p => p.Name).ToList();
var jsonKey = jsonValues.Select(g => g.Key).ToArray();
// Filter JObjects that have child objects that have values.
var parentsWithChildren = jsonValues.SelectMany(g => g).SelectMany(v => v.AncestorsAndSelf().OfType<JObject>().Skip(1)).ToHashSet();
// Collect all data rows: for every object, go through the column titles and get the value of that property in the closest ancestor or self that has a value of that name.
var rows = obj
.DescendantsAndSelf()
.OfType<JObject>()
.Where(o => o.PropertyValues().OfType<JValue>().Any() && (o == obj || !parentsWithChildren.Contains(o))) // Show a row for the root object + objects that have no children.
.Select(o => jsonKey.Select(c => o.AncestorsAndSelf().OfType<JObject>().Select(parent => parent[c])
.Where(v => v is JValue).Select(v => (string)v).FirstOrDefault()).Reverse() // Trim trailing nulls
.SkipWhile(s => s == null).Reverse());
// Convert to CSV
var csvRows = new[] { jsonKey }.Concat(rows).Select(r => string.Join(",", r));
var csv = string.Join("\n", csvRows);
Console.WriteLine(csv);
这是我得到的输出：
getUsers_userProfileDetail_userStatus_name，getUsers_userProfileDetail_userStatusDate，getUsers_userProfileDetail_lastAttestationDate，getUsers_userInformation_Id，getUsers_userInformation_lastName，getUsers_userInformation_suffix，getUsers_userInformation_gender，getUsers_userInformation_birthDate，getUsers_userInformation_ssn，getUsers_userInformation_ethnicity，getUsers_userInformation_languagesSpoken，getUsers_userInformation_personalEmail，getUsers_userInformation_otherNames，getUsers_userInformation_userType_name，getUsers_userInformation_primaryuserState，getUsers_userInformation_otheruserState，getUsers_userInformation_practiceSetting，getUsers_userInformation_primaryEmail 过期，2017/04/04 13：18：25,02 / 01/2019 14:20:42 APN ,,, 13610875，************，女，1970年1月1日05：31：00,000000000，INVALID_REFERENCE_VALUE ,,, CO，INPATIENT_ONLY，***** @ *****。com
此处的userType> name not列不在正确的位置，otheruserState数组未出现在输出中。
有人可以帮助我吗？
答案 0 :(得分：1)
以下是我建议的过程，因为它不会跳过null值，并且如果存在null也不会引发错误。下面的过程为json中的每个用户创建一个csv格式的字符串，并为任何null值写下一个string.empty。
字符串列表转换为|分隔，因为它以逗号分隔格式。 您应该更新所有类，并在属性名称中使用大写首字母。我只是粘贴从json2csharp网站获得的内容。
获取Json的课程
我使用json2csharp网站将您的json转换为类。一旦获得了类，我就在GetUser上使用了重写方法将用户数据转换为字符串。...然后使用该信息来打印它。
Json的课程
public class UserStatus
{
public string name { get; set; }
}
public class UserProfileDetail
{
public UserStatus userStatus { get; set; }
public DateTime userStatusDate { get; set; }
public DateTime lastAttestationDate { get; set; }
}
public class UserType
{
public string name { get; set; }
}
public class UserInformation
{
public int Id { get; set; }
public string lastName { get; set; }
public string suffix { get; set; }
public string gender { get; set; }
public DateTime birthDate { get; set; }
public string ssn { get; set; }
public string ethnicity { get; set; }
public List<string> languagesSpoken { get; set; }
public string personalEmail { get; set; }
public List<string> otherNames { get; set; }
public UserType userType { get; set; }
public string primaryuserState { get; set; }
public List<string> otheruserState { get; set; }
public string practiceSetting { get; set; }
public string primaryEmail { get; set; }
}
public class GetUser
{
public override string ToString()
{
List<string> userData = new List<string>
{
userProfileDetail.userStatus.name,
userProfileDetail.userStatusDate.ToString(),
userProfileDetail.lastAttestationDate.ToString(),
userInformation.Id.ToString(),
userInformation.lastName,
userInformation.suffix?? string.Empty ,
userInformation.gender?? string.Empty ,
userInformation.birthDate.ToString(),
userInformation.ssn?? string.Empty ,
userInformation.ethnicity?? string.Empty ,
string.Join("|", userInformation.languagesSpoken?? new List<string>()),
userInformation.personalEmail?? string.Empty ,
string.Join("|", userInformation.otherNames?? new List<string>() ),
userInformation.userType.name?? string.Empty ,
userInformation.primaryuserState?? string.Empty ,
string.Join("|", userInformation.otheruserState),
userInformation.practiceSetting?? string.Empty ,
userInformation.primaryEmail
};
return string.Join(",", userData);
}
public UserProfileDetail userProfileDetail { get; set; }
public UserInformation userInformation { get; set; }
}
public class Data
{
public List<GetUser> getUsers { get; set; }
}
public class RootObject
{
public string GetHeader()
{
return "getUsers_userProfileDetail_userStatus_name,getUsers_userProfileDetail_userStatusDate,getUsers_userProfileDetail_lastAttestationDate,getUsers_userInformation_Id,getUsers_userInformation_lastName,getUsers_userInformation_suffix,getUsers_userInformation_gender,getUsers_userInformation_birthDate,getUsers_userInformation_ssn,getUsers_userInformation_ethnicity,getUsers_userInformation_languagesSpoken,getUsers_userInformation_personalEmail,getUsers_userInformation_otherNames,getUsers_userInformation_userType_name,getUsers_userInformation_primaryuserState,getUsers_userInformation_otheruserState,getUsers_userInformation_practiceSetting,getUsers_userInformation_primaryEmail";
}
public Data data { get; set; }
}
如何使用上述类
string json = File.ReadAllLines("locationOfJson");
var rootObject = JsonConvert.DeserializeObject<RootObject>(json);
Console.WriteLine(rootObject.GetHeader()); // Prints Header
foreach (var user in rootObject.data.getUsers)
{
Console.WriteLine(user.ToString()); // Print Each User.
}
输出
getUsers_userProfileDetail_userStatus_name,getUsers_userProfileDetail_userStatusDate,getUsers_userProfileDetail_lastAttestationDate,getUsers_userInformation_Id,getUsers_userInformation_lastName,getUsers_userInformation_suffix,getUsers_userInformation_gender,getUsers_userInformation_birthDate,getUsers_userInformation_ssn,getUsers_userInformation_ethnicity,getUsers_userInformation_languagesSpoken,getUsers_userInformation_personalEmail,getUsers_userInformation_otherNames,getUsers_userInformation_userType_name,getUsers_userInformation_primaryuserState,getUsers_userInformation_otheruserState,getUsers_userInformation_practiceSetting,getUsers_userInformation_primaryEmail
Expired,4/4/2017 3:48:25 AM,2/1/2019 3:50:42 AM,13610875,************,,FEMALE,12/31/1969 7:01:00 PM,000000000,INVALID_REFERENCE_VALUE,,,,APN,CO,CO,INPATIENT_ONLY,*****@*****.com
我建议复制粘贴到excel中的数据以查看其适合程度。我对其进行了测试，似乎所有数据在其标题下均正确无误。
答案 1 :(得分：0)
您提供的案例的解决方案如下。它使用JsonTextReader而不是LINQ to JSON来完全控制输出格式。例如，您没有指定字符串数组（ otheruserState ）的行为，因此在我的解决方案中，我用破折号分隔了字符串值。我使用空字符串表示空值。
string propertyName = "";
var isArray = false;
var arrayHeaderprinted = false;
var headers = new List<string>();
var data = new List<string>();
var arrayData = new List<string>();
using (var reader = new JsonTextReader(new StringReader(json)))
{
while (reader.Read())
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
propertyName = (string)reader.Value;
break;
case JsonToken.StartArray:
isArray = true;
break;
case JsonToken.EndArray:
case JsonToken.StartObject:
isArray = false;
if (arrayHeaderprinted)
{
arrayHeaderprinted = false;
data.Add(string.Join("-", arrayData));
}
break;
case JsonToken.Null:
case JsonToken.String:
case JsonToken.Boolean:
case JsonToken.Date:
case JsonToken.Float:
case JsonToken.Integer:
if (isArray)
{
if (!arrayHeaderprinted)
{
arrayHeaderprinted = true;
headers.Add(propertyName);
}
arrayData.Add(reader.Value.ToString());
}
else
{
headers.Add(propertyName);
data.Add(reader.Value?.ToString() ?? "");
}
break;
}
}
}
Console.WriteLine(string.Join(",", headers));
Console.WriteLine(string.Join(",", data));
它产生的输出：
name,userStatusDate,lastAttestationDate,Id,lastName,suffix,gender,birthDate,ssn,ethnicity,languagesSpoken,personalEmail,otherNames,name,primaryuserState,otheruserState,practiceSetting,primaryEmail
Expired,04.04.2017 09:48:25,01.02.2019 09:50:42,13610875,************,,FEMALE,01.01.1970 01:01:00,000000000,INVALID_REFERENCE_VALUE,,,,APN,CO,CO-PP,INPATIENT_ONLY,*****@*****.com