映射可空的异常？

我收到以下例外情况：映射可空的异常？

缺少类型映射配置或不支持的映射。

映射类型： FollowUpActivityDTO - >可为空1 LEST.Model.FollowUpActivityDTO -> System.Nullable 1 [[System.DateTime的，mscorlib程序，版本= 4.0.0.0，文化=中性公钥= b77a5c561934e089]]

目标路径： List`1 [0 ]

Source值：

类FollowUpActivityDTO { 编号：75e83860-65e4-11e5-9a90-382c4ab9e433 时间戳：28/09/2015 11时28分55秒 StartTimestamp：28/09/2015 15： 26:00 DueTimestamp：28/09/2015 15时26分00秒 ClosingTimestamp：28/09/2015 15时26分00秒事项：elasticsearch - COPIA - copia.jar 评论：存档状态：开 BacklogStatus：未知 }

{Trying to map FollowUpActivityDTO to Nullable`1.}

当我执行它提出：

return AutoMapper.Mapper.Map<List<LEST.Model.FollowUpActivityDTO>, List<Domain.FollowUpActivity>>(dtos);

这是目的地类：

public class FollowUpActivity 
{ 
    private String id;    // Generated on server 
    private DateTime? creationDate; 
    private DateTime? startDate; 
    private DateTime? dueDate; 
    private DateTime? closingDate; 
    private String matter; 
    private String comment; 
    private FollowUpActivityStatus status; 
    private FollowUpActivityBacklogStatus backlogStatus; 

    private List<MetaInfoValue> metainfos; 
    private List<MetaResource> resources;

这是源类：我创建了一个测试，用于测试该映射

AutoMapper.Mapper.CreateMap<LEST.Model.FollowUpActivityDTO, Domain.FollowUpActivity>() 
      .ForMember(dst => dst.CreationDate, opts => opts.Ignore()) //opts.MapFrom(s => s.Timestamp.HasValue ? s.Timestamp.Value : DateTime.MinValue)) 
      .ForMember(dst => dst.StartDate, opts => opts.Ignore()) //opts.MapFrom(s => s.StartTimestamp.HasValue ? s.StartTimestamp.Value : DateTime.MinValue)) 
      .ForMember(dst => dst.DueDate, opts => opts.Ignore()) //opts.MapFrom(s => s.DueTimestamp.HasValue ? s.DueTimestamp.Value : DateTime.MinValue)) 
      .ForMember(dst => dst.ClosingDate, opts => opts.Ignore()) //opts.MapFrom(s => s.ClosingTimestamp.HasValue ? s.ClosingTimestamp.Value : DateTime.MinValue)); 
      .ForMember(dst => dst.Status, opts => opts.UseValue<Domain.FollowUpActivityStatus>(Domain.FollowUpActivityStatus.Open)) 
      .ForMember(dst => dst.BacklogStatus, opts => opts.UseValue<Domain.FollowUpActivityBacklogStatus>(Domain.FollowUpActivityBacklogStatus.Work));

来源

2015-09-28 Jordi

：

namespace Tests 
{ 
[TestFixture] 
public class Mapping 
{ 

    [SetUp] 
    public void initialize() 
    { 
     Core.Mappings.AutoMapperConfiguration.Configure(); 
    } 

    [Test] 
    public void configutation() 
    { 
     AutoMapper.Mapper.AssertConfigurationIsValid<Core.Mappings.Profiles.FollowUpActivityProfile>(); 
    } 

    [Test] 
    public void followUpActivityDTOToDOMAIN() 
    { 
     LEST.Model.FollowUpActivityDTO dto = new LEST.Model.FollowUpActivityDTO() 
     { 
      Id = new Guid().ToString(), 
      Timestamp = DateTime.UtcNow, 
      StartTimestamp = DateTime.UtcNow, 
      DueTimestamp = DateTime.UtcNow, 
      ClosingTimestamp = DateTime.UtcNow, 
      Matter = "Matter", 
      Comment = "Comment", 
      Status = "open", 
      BacklogStatus = "work", 
      Metainfos = new System.Collections.Generic.List<LEST.Model.MetaInfoValueDTO>() 
     }; 

     Domain.FollowUpActivity domain = new Domain.FollowUpActivity(); 
     AutoMapper.Mapper.Map<LEST.Model.FollowUpActivityDTO, Domain.FollowUpActivity>(dto, domain); 

     domain.Should().NotBeNull(); 
     domain.Id.Should().Be(dto.Id); 
    } 
} 
}

采取

public class FollowUpActivityDTO 
{ 
    public FollowUpActivityDTO(); 

    public string BacklogStatus { get; set; } 
    public string ChannelId { get; set; } 
    public DateTime? ClosingTimestamp { get; set; } 
    public string Comment { get; set; } 
    public DateTime? DueTimestamp { get; set; } 
    public string Id { get; set; } 
    public string Matter { get; set; } 
    public DateTime? StartTimestamp { get; set; } 
    public string Status { get; set; } 
    public DateTime? Timestamp { get; set; }

和映射配置文件一看：

Domain.FollowUpActivity domain = new Domain.FollowUpActivity(); 
AutoMapper.Mapper.Map<LEST.Model.FollowUpActivityDTO, Domain.FollowUpActivity>(dto, domain);

现在我工作了。不过，如果我的代码如下，它崩溃：

Domain.FollowUpActivity domain = AutoMapper.Mapper.Map<LEST.Model.FollowUpActivityDTO, Domain.FollowUpActivity>(dto);

我搞清楚这个问题是在我的目的地类的构造函数，那么：

namespace Domain 
{ 
public enum FollowUpActivityStatus 
{ 
    Open, 
    Closed, 
    Delegated 
} 

public enum FollowUpActivityBacklogStatus 
{ 
    Work, 
    Sprint   
} 

public class FollowUpActivity 
{ 
    private String id;    // Generated on server 
    private DateTime? creationDate; 
    private DateTime? startDate; 
    private DateTime? dueDate; 
    private DateTime? closingDate; 
    private String matter; 
    private String comment; 
    private FollowUpActivityStatus status; 
    private FollowUpActivityBacklogStatus backlogStatus; 

    private List<MetaInfoValue> metainfos; 
    private List<MetaResource> resources; 

    #region Properties 

    public String Id 
    { 
     get { return id; } 
     set { id = value; } 
    } 

    public DateTime? CreationDate 
    { 
     get { return creationDate; } 
     set { creationDate = value; } 
    } 

    public DateTime? StartDate 
    { 
     get { return startDate; } 
     set { startDate = value; } 
    } 

    public DateTime? DueDate 
    { 
     get { return dueDate; } 
     set { dueDate = value; } 
    } 

    public DateTime? ClosingDate 
    { 
     get { return closingDate; } 
     set { closingDate = value; } 
    } 

    public FollowUpActivityStatus Status 
    { 
     get { return status; } 
     set { status = value; } 
    } 

    public FollowUpActivityBacklogStatus BacklogStatus 
    { 
     get { return backlogStatus; } 
     set { backlogStatus = value; } 
    } 

    public String Matter 
    { 
     get { return matter; } 
     set { matter = value; } 
    } 

    public String Comment 
    { 
     get { return comment; } 
     set { comment = value; } 
    } 

    public List<MetaInfoValue> Metainfos 
    { 
     get { return metainfos; } 
     set { metainfos = value; } 
    } 

    public List<MetaResource> Resources 
    { 
     get { return resources; } 
     set { resources = value; } 
    } 

    #endregion 

    #region Constructors 

    public FollowUpActivity() 
     : this(null, null) 
    { 

    } 

    public FollowUpActivity(String matter, String comment = null, params Domain.MetaInfoValue[] metainfos) 
     : this(DateTime.Now, matter, comment, metainfos) 
    { 

    } 

    public FollowUpActivity(DateTime creationDate, String matter, String comment = null, params Domain.MetaInfoValue[] metainfos) 
     : this(creationDate, matter, new List<MetaResource>(), comment, metainfos) 
    { 

    } 

    public FollowUpActivity(DateTime creationDate, String matter, List<MetaResource> resources, String comment = null, params Domain.MetaInfoValue[] metainfos) 
     : this(creationDate, matter, FollowUpActivityBacklogStatus.Work, new List<MetaResource>(), comment, metainfos) 
    { 

    } 

    public FollowUpActivity(DateTime creationDate, String matter, FollowUpActivityBacklogStatus backlogStatus, List<MetaResource> resources, String comment = null, params Domain.MetaInfoValue[] metainfos) 
     : this(creationDate, null, null, null, matter, FollowUpActivityStatus.Open, backlogStatus, new List<MetaResource>(), comment, metainfos) 
    { 

    } 

    public FollowUpActivity(DateTime? creationDate, DateTime? startDate, DateTime? dueDate, DateTime? closingDate, String matter, FollowUpActivityStatus status, FollowUpActivityBacklogStatus backlogStatus, List<MetaResource> resources, String comment = null, params Domain.MetaInfoValue[] metainfos) 
    { 
     this.id = String.Empty; 
     this.creationDate = creationDate; 
     this.startDate = startDate; 
     this.dueDate = dueDate; 
     this.closingDate = closingDate; 
     this.matter = matter; 
     this.comment = comment; 
     this.status = status; 
     this.backlogStatus = backlogStatus; 

     this.metainfos = new List<MetaInfoValue>(metainfos); 
     this.resources = resources; 
    } 

    #endregion 

} 
}

不过，我不知道为什么它使用第二种方法崩溃...有人知道为什么吗？谢谢大家。

来源

2015-09-29 07:53:42 Jordi

映射可空的异常？

回答

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