AutoMapper 4映射錯誤

Question

我有兩個類。一個是名爲「ImportedContact」的類，它映射到csv文件中的記錄。對於文件中的每一行，都有這個類的實例。我們使用LINQtoCSV庫來檢索這個類的值。第二個是與Telerik的DataAccess ORM庫一起使用的名爲「Contact」的類。因此，我們的過程是使用LINQtoCSV讀取csv文件，填充ImportedContact類實例並將它們分別映射到Contact類實例中，在那裏將它們添加到數據庫上下文並更新數據庫。當我們在這些類之間映射時，我會得到一個對我來說沒有意義的異常。

這裏是ImportedContact類：

using System; 
using System.Linq; 
using LINQtoCSV; 

namespace SharePointDirectory.Jobs 
{ 
    public class ImportedContact 
    { 
     [CsvColumn(Name = "Location Name", FieldIndex = 4)] 
     public string BranchId 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "Work Wireless", FieldIndex = 7)] 
     public string CellNumber 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "Home Department Name", FieldIndex = 3)] 
     public string Dept 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "Extension", FieldIndex = 9)] 
     public string Ext 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "First Name", FieldIndex = 2)] 
     public string FirstName 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "Last Name", FieldIndex = 1)] 
     public string LastName 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "Shift -- Value", FieldIndex = 5)] 
     public string Shift 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "Job Title", FieldIndex = 8)] 
     public string Title 
     { 
      get; 
      set; 
     } 

     [CsvColumn(Name = "Work Phone", FieldIndex = 6)] 
     public string WorkNumber 
     { 
      get; 
      set; 
     } 
    } 
} 

這裏是Contact類：

using System; 
using System.Linq; 
using System.Runtime.Serialization; 

namespace SharePointDirectory.Data 
{ 
    [Serializable] 
    public class Contact : ISerializable 
    { 
     public Contact() 
     { 
     } 

     protected Contact(SerializationInfo info, StreamingContext context) 
     { 
      this.Id = info.GetInt64("Id"); 
      this.EmployeeId = (int?)info.GetValue("EmployeeId", typeof(int?)); 
      this.FirstName = info.GetString("FirstName"); 
      this.LastName = info.GetString("LastName"); 
      this.Title = info.GetString("Title"); 
      this.Ext = info.GetString("Ext"); 
      this.Dept = info.GetString("Dept"); 
      this.DeptId = info.GetString("DeptId"); 
      this.CellNumber = info.GetString("CellNumber"); 
      this.PhotoPath = info.GetString("PhotoPath"); 
      this.Active = info.GetBoolean("Active"); 
      this.Office = info.GetBoolean("Office"); 
      this.Shift = info.GetString("Shift"); 
      this.BranchId = info.GetString("BranchId"); 
      this.WorkNumber = info.GetString("WorkNumber"); 
     } 

     public bool Active 
     { 
      get; 
      set; 
     } 

     public string BranchId 
     { 
      get; 
      set; 
     } 

     public string CellNumber 
     { 
      get; 
      set; 
     } 

     public string Dept 
     { 
      get; 
      set; 
     } 

     public string DeptId 
     { 
      get; 
      set; 
     } 

     public int? EmployeeId 
     { 
      get; 
      set; 
     } 

     public string Ext 
     { 
      get; 
      set; 
     } 

     public string FirstName 
     { 
      get; 
      set; 
     } 

     public long Id 
     { 
      get; 
      set; 
     } 

     public string LastName 
     { 
      get; 
      set; 
     } 

     public bool Office 
     { 
      get; 
      set; 
     } 

     public string PhotoPath 
     { 
      get; 
      set; 
     } 

     public string Shift 
     { 
      get; 
      set; 
     } 

     public string Title 
     { 
      get; 
      set; 
     } 

     public string WorkNumber 
     { 
      get; 
      set; 
     } 

     public void GetObjectData(SerializationInfo info, StreamingContext context) 
     { 
      info.AddValue("Id", this.Id, typeof(long)); 
      info.AddValue("EmployeeId", this.EmployeeId, typeof(int?)); 
      info.AddValue("FirstName", this.FirstName, typeof(string)); 
      info.AddValue("LastName", this.LastName, typeof(string)); 
      info.AddValue("Title", this.Title, typeof(string)); 
      info.AddValue("Ext", this.Ext, typeof(string)); 
      info.AddValue("Dept", this.Dept, typeof(string)); 
      info.AddValue("DeptId", this.DeptId, typeof(string)); 
      info.AddValue("CellNumber", this.CellNumber, typeof(string)); 
      info.AddValue("PhotoPath", this.PhotoPath, typeof(string)); 
      info.AddValue("Active", this.Active, typeof(bool)); 
      info.AddValue("Office", this.Office, typeof(bool)); 
      info.AddValue("Shift", this.Shift, typeof(string)); 
      info.AddValue("BranchId", this.BranchId, typeof(string)); 
      info.AddValue("WorkNumber", this.WorkNumber, typeof(string)); 
     } 
    } 
} 

這裏是設置我們如何映射：

Mapper.Initialize(configuration => configuration.CreateMap<ImportedContact, Contact>()); 

下面是我們如何執行運行時的實際地圖：

var contact = Mapper.Map<Contact>(importedContact); 

當我們執行的地圖，這是我們所看到的異常消息：

{ 
    "Missing type map configuration or unsupported mapping. 

    Mapping types: 
    ImportedContact -> SerializationInfo 
    SharePointDirectory.Jobs.ImportedContact -> System.Runtime.Serialization.SerializationInfo 

    Destination path: 
    Contact 

    Source value: 
    SharePointDirectory.Jobs.ImportedContact" 
} 

System.Exception {AutoMapper.AutoMapperMappingException} 

我不明白爲什麼它試圖在那裏列出這兩種類型進行映射。 SerializationInfo是其中一個構造函數的構造函數參數，但也有一個無參數構造函數，我覺得它應該注意，而不是相反。這個相同的代碼似乎在AutoMapper 3.3版本中工作正常。

我一直在查看AutoMapper文檔，看看能否找到任何東西。迄今爲止最接近的是它提到了這兩件事。

https://github.com/AutoMapper/AutoMapper/wiki/Construction

https://github.com/AutoMapper/AutoMapper/wiki/Configuration

具體有關配置前綴聲明：

By default AutoMapper recognizes the prefix "Get" 

Answer 1

我也有類似的問題，即AutoMapper決定使用與參數，而不是默認的構造函數的構造。

我的解決方法是實例化目標對象自己做出AutoMapper填寫屬性：

var contact = new Contact(); 
Mapper.Map(importedContact, contact); 

Answer 2

我不知道永遠版本自動映射器，但我想，你還是需要指定目的地映射類，否則它不知道在哪裏映射。

var contact = Mapper.Map<ImportedContact, Contact>(importedContact);