c# - JsonConvert.DeserializeObject 抛出无法加载文件或程序集'System.ComponentModel.Annotations，版本 = 4.3.0.0，文化
问题描述
string jsonDoc = @"{
""pricingDetails"": [{
""pricingStrategyId"": 1,
""pricingStrategy"": {
""id"": 1,
""name"": ""PREPAY_FIXED"",
""displayText"": ""Prepay fixed"",
""description"": ""Pay onsite a fixed price at entry.""
},
""siteId"": 262,
""site"": {
""id"": 262,
""buildingId"": 64,
""siteName"": ""Test Site"",
""siteDescription"": ""test1"",
""isListed"": null,
""listedDateTime"": null,
""siteAfterHoursInstructions"": null,
""archiveDateTime"": null,
""archivedBy"": null,
""createdDateTime"": ""2019-04-09T00:00:00"",
""modifyDateTime"": ""2019-04-09T14:59:54.87"",
""statusId"": 5,
""siteMaxHeight"": ""2.1"",
""businessRegistrationId"": ""2019-105A110BU69L64B262"",
""businessAbnOracnNumber"": ""48 110 366 946"",
""businessPhoneNumber"": ""02 9017 1292"",
""businessFaxNumber"": """",
""bankAccountName"": null,
""bankAccountNumber"": null,
""bankBsbnumber"": null,
""bankEmailAddresses"": null,
""physicalAddressLine2"": """",
""physicalAddressSuburb"": ""Sydney"",
""physicalAddressState"": ""NSW"",
""physicalAddressPostcode"": 2000,
""postalAddressLine2"": """",
""postalAddressSuburb"": ""Sydney"",
""postalAddressState"": ""NSW"",
""postalAddressPostcode"": 2000,
""entryAddressLine2"": null,
""exitAddressLine2"": null,
""bankReferenceNo"": null,
""isGstregistered"": null,
""refParentBankDets"": false,
""canTakePayments"": false,
""siteOpenTime"": 60,
""siteCloseTime"": 1260,
""siteAccessOpenTime"": 360,
""siteAccessCloseTime"": 1080,
""occupiedTypeId"": 2,
""siteNotes"": null,
""securityType"": true,
""keyDelivery"": 3,
""keyInstrPickup"": null,
""keyInstrReturn"": null,
""smartCmsgLine1"": null,
""smartCmsgLine2"": null,
""instrGracePeriod"": null,
""instrOverstay"": null,
""isUnusedBay"": false,
""navStatusId"": 0,
""navErrorMsg"": null,
""priorityPass"": null,
""siteCommision"": 0,
""entryGracePeriod"": null,
""exitGracePeriod"": null,
""bookableDays"": null,
""checkQuota"": null,
""totalSpaces"": null
},
""days"": 31,
""entryTimeOffset"": 360,
""exitTimeOffset"": 1080,
""price"": 7.00
}
],
""relatedDevices"": [{
""id"": 15,
""siteId"": 262,
""roleId"": 2,
""role"": {
""id"": 2,
""name"": ""SC"",
""description"": ""Display device""
},
""sideId"": 1,
""side"": {
""id"": 1,
""name"": ""IN""
},
""lane"": 1,
""deviceGroup"": ""Live""
}, {
""id"": 17,
""siteId"": 262,
""uid"": ""synorb1-exit1-ptg"",
""roleId"": 4,
""role"": {
""id"": 4,
""name"": ""PTG"",
""description"": ""Payment device""
},
""sideId"": 1,
""side"": {
""id"": 1,
""name"": ""IN""
},
""lane"": 1,
""deviceGroup"": ""Live""
}
]
}
"
var obj = JsonConvert.DeserializeObject<ParkingOfferDetailsDTO>(jsonDoc);
==================================
public class ParkingOfferDetailsDTO
{
public List<CasualParkingPricingDetailsVM> PricingDetails { get; set; }
public List<AccessDeviceVM> RelatedDevices { get; set; }
}
public class CasualParkingPricingDetailsVM
{
public int PricingStrategyId { get; set; }
public virtual CasualParkingPricingStrategyVM PricingStrategy { get; set; }
public int SiteId { get; set; }
public virtual SitesVM Site { get; set; }
// Enum.Days |
public int Days { get; set; }
public int? EntryTimeOffset { get; set; }
public int? ExitTimeOffset { get; set; }
public decimal Price { get; set; }
}
public class CasualParkingPricingStrategyVM
{
public int Id { get; set; }
public string Name { get; set; }
public string DisplayText { get; set; }
public string Description { get; set; }
}
public class SitesVM
{
public SitesVM()
{
//Bookings = new HashSet<Bookings>();
//InventoryEntityRelationship = new HashSet<InventoryEntityRelationship>();
//ParkingTypes = new HashSet<ParkingTypes>();
//SiteLicenses = new HashSet<SiteLicenses>();
//SiteTimeZones = new HashSet<SiteTimeZonesVM>();
//Spaces = new HashSet<Spaces>();
}
public int Id { get; set; }
public int BuildingId { get; set; }
public string SiteName { get; set; }
//public string Photos { get; set; }
//public bool? HasOnSiteStaff { get; set; }
//public string OnSiteStaffNotes { get; set; }
public string SiteDescription { get; set; }
public bool? IsListed { get; set; }
public DateTime? ListedDateTime { get; set; }
public string SiteAfterHoursInstructions { get; set; }
public DateTime? ArchiveDateTime { get; set; }
public string ArchivedBy { get; set; }
public string CreatedBy { get; set; }
public DateTime CreatedDateTime { get; set; }
public string ModifiedBy { get; set; }
public DateTime ModifyDateTime { get; set; }
public int StatusId { get; set; }
public string SiteMaxHeight { get; set; }
public string BusinessName { get; set; }
public string BusinessRegistrationId { get; set; }
public string BusinessAbnOracnNumber { get; set; }
public string BusinessPhoneNumber { get; set; }
public string BusinessEmail { get; set; }
public string BusinessFaxNumber { get; set; }
public string BankAccountName { get; set; }
public string BankAccountNumber { get; set; }
public string BankBsbnumber { get; set; }
public string BankEmailAddresses { get; set; }
public string PhysicalAddressLine1 { get; set; }
public string PhysicalAddressLine2 { get; set; }
public string PhysicalAddressSuburb { get; set; }
public string PhysicalAddressState { get; set; }
public int PhysicalAddressPostcode { get; set; }
public string PostalAddressLine1 { get; set; }
public string PostalAddressLine2 { get; set; }
public string PostalAddressSuburb { get; set; }
public string PostalAddressState { get; set; }
public int? PostalAddressPostcode { get; set; }
public string EntryAddressLine2 { get; set; }
public string ExitAddressLine2 { get; set; }
public string BankReferenceNo { get; set; }
public bool? IsGstregistered { get; set; }
public bool RefParentBankDets { get; set; }
public bool CanTakePayments { get; set; }
public short? SiteOpenTime { get; set; }
public short? SiteCloseTime { get; set; }
public short? SiteAccessOpenTime { get; set; }
public short? SiteAccessCloseTime { get; set; }
public int OccupiedTypeId { get; set; }
public string SiteNotes { get; set; }
public bool SecurityType { get; set; }
public int? KeyDelivery { get; set; }
public string KeyInstrPickup { get; set; }
public string KeyInstrReturn { get; set; }
public string SmartCmsgLine1 { get; set; }
public string SmartCmsgLine2 { get; set; }
public string InstrGracePeriod { get; set; }
public string InstrOverstay { get; set; }
public bool IsUnusedBay { get; set; }
public byte NavStatusId { get; set; }
public string NavErrorMsg { get; set; }
public string EntryAddressLine1 { get; set; }
public string EntryAddressSuburb { get; set; }
public string EntryAddressState { get; set; }
public int? EntryAddressPostcode { get; set; }
public string ExitAddressLine1 { get; set; }
public string ExitAddressSuburb { get; set; }
public string ExitAddressState { get; set; }
public int? ExitAddressPostcode { get; set; }
public bool? IsPublicSearchable { get; set; }
public string PriorityPass { get; set; }
public float SiteCommision { get; set; }
public short? EntryGracePeriod { get; set; }
public short? ExitGracePeriod { get; set; }
public int? BookableDays { get; set; }
public bool? CheckQuota { get; set; }
public int? TotalSpaces { get; set; }
//public virtual Buildings Building { get; set; }
//public virtual RefNavStatus NavStatus { get; set; }
//public virtual RefStatus Status { get; set; }
//public virtual ICollection<Bookings> Bookings { get; set; }
//public virtual ICollection<InventoryEntityRelationship> InventoryEntityRelationship { get; set; }
//public virtual ICollection<ParkingTypes> ParkingTypes { get; set; }
//public virtual ICollection<SiteLicenses> SiteLicenses { get; set; }
//public virtual ICollection<SiteTimeZonesVM> SiteTimeZones { get; set; }
//public virtual ICollection<Spaces> Spaces { get; set; }
}
public class AccessDeviceVM
{
public int Id { get; set; }
[Required]
public int SiteId { get; set; }
[Required]
public string UID { get; set; }
[Required]
public int RoleId { get; set; }
public AccessDeviceRoleVM Role { get; set; }
[Required]
public int SideId { get; set; }
public AccessDeviceSideVM Side { get; set; }
[Required]
public int Lane { get; set; }
[Required]
public string DeviceGroup { get; set; }
}
public class AccessDeviceRoleVM
{
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
}
public class AccessDeviceSideVM
{
public int Id { get; set; }
public string Name { get; set; }
}
================ 我正在尝试将 JSON 字符串反序列化为嵌套对象。但是，它会导致异常。对我来说，例外看起来无关紧要。
上面我分享了 JSON 和 C# 类结构。我正在尝试反序列化 JSON，但它抛出“无法加载文件或程序集'System.ComponentModel.Annotations，异常......”
我也尝试过使用简单的对象结构和 JSON，它有效。
解决方案
因此，如前所述，异常是无关紧要的（没有帮助）。这是我调试此问题的方法。
1）添加错误处理程序
// Created a JsonSerializerSettings and passed it to DeserializeObject
var jsonSettings = new JsonSerializerSettings { Error = ErrorHandler };
JsonConvert.DeserializeObject<ParkingOfferDetailsDTO>(responseJson, jsonSettings);
/// Actual handler method
List<string> errors = new List<string>();
private void ErrorHandler(object sender, ErrorEventArgs e)
{
errors.Add(e.ErrorContext.Error.Message);
e.ErrorContext.Handled = true;
}
这有两个方面的帮助，1）没有抛出异常，但相同的错误（异常）被传递给错误处理程序。2) 返回（不完整的）序列化对象。这指出了对象序列化的哪一部分导致了异常。
现在在我的代码/模型中发布。我在某些属性上有 [Required] 属性。不知道为什么，但这导致了反序列化错误。
推荐阅读
- microsoft-graph-api - 使用 /oauth2/token 生成令牌 MS Azure API 返回 AADSTS50034 错误
- angular - 如何延迟 Angular 8 和 rxjs 6 中的 img 显示？
- c# - 选择索引更改事件上的组合框
- android - 无论设备方向是纵向还是横向，我都想以横向模式录制视频
- python - 使用Python将单行的文本拆分为CSV文件中同一列的多行
- python - 模拟 Tornado AsyncHTTPClient 请求/响应
- java - JDK 11 编译失败，JDK 8 编译正常
- javascript - 当比较字符串时，三等号给出错误的输出，但在整数的情况下，它给出正确的输出
- angular - Angular Mat-multiple-select，从下拉列表中获取数据
- c# - 在实体框架核心中一起实现奇异命名约定和数据注释的正确方法