如何使用 AutoMapper 映射对象的子列表
How to Map child list of object using AutoMapper
我有这两个表 'User' 和 'Project'。他们共享一对多关系。
我得到的响应是一个列表，我想将此响应映射到我创建的 GetProjectManager 的 dto，但我不确定如何在自动映射器配置文件中定义 CreateMap。
我从 ProjectManager:
类型的 API 收到了这个回复
项目经理：
[
{
"id": 1,
"projectId": 1,
"userId": 1,
"project": {
"id": 1,
"projectName": "iDocument-FBAG",
"plannedStartDate": "2019-07-03T00:00:00",
"plannedEndDate": "2019-07-10T00:00:00",
"actualStartDate": null,
"actualEndDate": null,
"projectDescription": "The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.",
"onProjects": [],
"projectManagers": []
},
"user": {
"firstName": "Abc",
"lastName": "Efg",
"isProjectManager": true,
"registrationTime": "2019-06-28T19:28:55.8386138",
"employees": null,
"id": 1,
"userName": "xyz@abc.com"
}
},
{
"id": 3,
"projectId": 8,
"userId": 1,
"project": {
"id": 8,
"projectName": "Aquatrols-FBAG",
"plannedStartDate": "2019-07-03T00:00:00",
"plannedEndDate": "2019-07-10T00:00:00",
"actualStartDate": null,
"actualEndDate": null,
"projectDescription": "The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.",
"onProjects": [],
"projectManagers": []
},
"user": {
"firstName": "Abc",
"lastName": "Efg",
"isProjectManager": true,
"registrationTime": "2019-06-28T19:28:55.8386138",
"employees": null,
"id": 1,
"userName": "xyz@abc.com"
}
}
]
我想将此响应映射到我创建的 Dto (GetProjectManager)。
public class GetProjectManager
{
public string ProjectManagerId { get; set; }
public string Email { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public IList<GetProjectDto> GetProjects { get; set; }
}
public class GetProjectDto
{
public int ProjectId { get; set; }
public string ProjectName { get; set; }
public DateTime PlannedStartDate { get; set; }
public DateTime PlannedEndDate { get; set; }
public DateTime? ActualStartDate { get; set; }
public DateTime? ActualEndDate { get; set; }
public string ProjectDescription { get; set; }
}
public class ProjectManager
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
[Required]
public int Id { get; set; }
[Required]
public int ProjectId { get; set; }
[Required]
public int UserId { get; set; }
public Project Project { get; set; }
public AppUsers User { get; set; }
}
首先，您需要将响应 json 映射到类型
namespace Response
{
public class ProjectManager
{
public int id { get; set; }
public int projectId { get; set; }
public int userId { get; set; }
public Project project { get; set; }
public User user { get; set; }
}
public class Project
{
public int id { get; set; }
public string projectName { get; set; }
public DateTime plannedStartDate { get; set; }
public DateTime plannedEndDate { get; set; }
public object actualStartDate { get; set; }
public object actualEndDate { get; set; }
public string projectDescription { get; set; }
public object[] onProjects { get; set; }
public object[] projectManagers { get; set; }
}
public class User
{
public string firstName { get; set; }
public string lastName { get; set; }
public bool isProjectManager { get; set; }
public DateTime registrationTime { get; set; }
public object employees { get; set; }
public int id { get; set; }
public string userName { get; set; }
}
}
这是你的 dto
namespace Dto
{
public class GetProjectManager
{
public string ProjectManagerId { get; set; }
public string Email { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public IList<GetProjectDto> GetProjects { get; set; }
}
public class GetProjectDto
{
public int ProjectId { get; set; }
public string ProjectName { get; set; }
public DateTime PlannedStartDate { get; set; }
public DateTime PlannedEndDate { get; set; }
public DateTime? ActualStartDate { get; set; }
public DateTime? ActualEndDate { get; set; }
public string ProjectDescription { get; set; }
}
}
然后，创建自动映射器配置文件以响应 dto 映射
public class ResponseToDtoProfile : AutoMapper.Profile
{
public ResponseToDtoProfile()
{
CreateMap<Response.Project, Dto.GetProjectDto>()
.ForMember(dst => dst.ProjectId, opt => opt.MapFrom(src => src.id))
.ForMember(dst => dst.ProjectName, opt => opt.MapFrom(src => src.projectName))
.ForMember(dst => dst.PlannedStartDate, opt => opt.MapFrom(src => src.plannedStartDate))
.ForMember(dst => dst.PlannedEndDate, opt => opt.MapFrom(src => src.plannedEndDate))
.ForMember(dst => dst.ActualStartDate, opt => opt.MapFrom(src => src.actualStartDate))
.ForMember(dst => dst.ActualEndDate, opt => opt.MapFrom(src => src.actualEndDate))
.ForMember(dst => dst.ProjectDescription, opt => opt.MapFrom(src => src.projectDescription));
CreateMap<Response.ProjectManager, Dto.GetProjectManager>()
.ForMember(dst => dst.ProjectManagerId, opt => opt.MapFrom(src => src.id))
.ForMember(dst => dst.FirstName, opt => opt.MapFrom(src => src.user.firstName))
.ForMember(dst => dst.LastName, opt => opt.MapFrom(src => src.user.lastName))
.ForMember(dst => dst.GetProjects, opt => opt.MapFrom(src => src.project));
}
}
要投影 json 数组，让我们在集合上添加一个扩展方法
public static class ExtensionsHelper
{
public static List<TProjection> ProjectAsCollection<TProjection>(this IEnumerable<object> items) where TProjection : class
{
//var adapter = <Create Type Adapter>
return adapter.Adapt<List<TProjection>>(items);
}
}
最后，您可以将 json 数组投影到您的 dto。
static void Main(string[] args)
{
string jsonString = "[ { \"id\": 1, \"projectId\": 1, \"userId\": 1, \"project\": { \"id\": 1, \"projectName\": \"iDocument-FBAG\", \"plannedStartDate\": \"2019-07-03T00:00:00\", \"plannedEndDate\": \"2019-07-10T00:00:00\", \"actualStartDate\": null, \"actualEndDate\": null, \"projectDescription\": \"The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.\", \"onProjects\": [], \"projectManagers\": [] }, \"user\": { \"firstName\": \"Abc\", \"lastName\": \"Efg\", \"isProjectManager\": true, \"registrationTime\": \"2019-06-28T19:28:55.8386138\", \"employees\": null, \"id\": 1, \"userName\": \"xyz@abc.com\" } }, { \"id\": 3, \"projectId\": 8, \"userId\": 1, \"project\": { \"id\": 8, \"projectName\": \"Aquatrols-FBAG\", \"plannedStartDate\": \"2019-07-03T00:00:00\", \"plannedEndDate\": \"2019-07-10T00:00:00\", \"actualStartDate\": null, \"actualEndDate\": null, \"projectDescription\": \"The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.\", \"onProjects\": [], \"projectManagers\": [] }, \"user\": { \"firstName\": \"Abc\", \"lastName\": \"Efg\", \"isProjectManager\": true, \"registrationTime\": \"2019-06-28T19:28:55.8386138\", \"employees\": null, \"id\": 1, \"userName\": \"xyz@abc.com\" } } ]";
var rootObject = Newtonsoft.Json.JsonConvert.DeserializeObject<Response.ProjectManager[]>(jsonString).ToList().ProjectAsCollection<Dto.GetProjectManager>();
}
我希望这能回答问题。
I had to play around with the CreateMap in the AutoMapper profile and it solved my problem.
这就是我定义映射的方式。
CreateMap<ProjectManager, GetProjectDto>()
.ForMember(dst => dst.ProjectId, opt => opt.MapFrom(src => src.Project.Id))
.ForMember(dst => dst.ProjectName, opt => opt.MapFrom(src => src.Project.ProjectName))
.ForMember(dst => dst.PlannedStartDate, opt => opt.MapFrom(src => src.Project.PlannedStartDate))
.ForMember(dst => dst.PlannedEndDate, opt => opt.MapFrom(src => src.Project.PlannedEndDate))
.ForMember(dst => dst.ActualStartDate, opt => opt.MapFrom(src => src.Project.ActualStartDate))
.ForMember(dst => dst.ActualEndDate, opt => opt.MapFrom(src => src.Project.ActualEndDate))
.ForMember(dst => dst.ProjectDescription, opt => opt.MapFrom(src => src.Project.ProjectDescription));
CreateMap<List<ProjectManager>, GetProjectManager>()
.ForMember(dst => dst.ProjectManagerId,
opt => opt.MapFrom(src =>
src.FirstOrDefault().UserId))
.ForMember(dst => dst.FirstName,
opt => opt.MapFrom(src =>
src.FirstOrDefault().User.FirstName))
.ForMember(dst => dst.LastName,
opt => opt.MapFrom(src =>
src.FirstOrDefault().User.LastName))
.ForMember(dst => dst.Email,
opt => opt.MapFrom(src =>
src.FirstOrDefault().User.Email))
.ForMember(dst => dst.GetProjects,
opt => opt.MapFrom(src =>
src.Select(x => new ProjectManager
{
Project = x.Project
})));
我有这两个表 'User' 和 'Project'。他们共享一对多关系。 我得到的响应是一个列表，我想将此响应映射到我创建的 GetProjectManager 的 dto，但我不确定如何在自动映射器配置文件中定义 CreateMap。 我从 ProjectManager:
类型的 API 收到了这个回复项目经理：
[
{
"id": 1,
"projectId": 1,
"userId": 1,
"project": {
"id": 1,
"projectName": "iDocument-FBAG",
"plannedStartDate": "2019-07-03T00:00:00",
"plannedEndDate": "2019-07-10T00:00:00",
"actualStartDate": null,
"actualEndDate": null,
"projectDescription": "The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.",
"onProjects": [],
"projectManagers": []
},
"user": {
"firstName": "Abc",
"lastName": "Efg",
"isProjectManager": true,
"registrationTime": "2019-06-28T19:28:55.8386138",
"employees": null,
"id": 1,
"userName": "xyz@abc.com"
}
},
{
"id": 3,
"projectId": 8,
"userId": 1,
"project": {
"id": 8,
"projectName": "Aquatrols-FBAG",
"plannedStartDate": "2019-07-03T00:00:00",
"plannedEndDate": "2019-07-10T00:00:00",
"actualStartDate": null,
"actualEndDate": null,
"projectDescription": "The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.",
"onProjects": [],
"projectManagers": []
},
"user": {
"firstName": "Abc",
"lastName": "Efg",
"isProjectManager": true,
"registrationTime": "2019-06-28T19:28:55.8386138",
"employees": null,
"id": 1,
"userName": "xyz@abc.com"
}
}
]
我想将此响应映射到我创建的 Dto (GetProjectManager)。
public class GetProjectManager
{
public string ProjectManagerId { get; set; }
public string Email { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public IList<GetProjectDto> GetProjects { get; set; }
}
public class GetProjectDto
{
public int ProjectId { get; set; }
public string ProjectName { get; set; }
public DateTime PlannedStartDate { get; set; }
public DateTime PlannedEndDate { get; set; }
public DateTime? ActualStartDate { get; set; }
public DateTime? ActualEndDate { get; set; }
public string ProjectDescription { get; set; }
}
public class ProjectManager
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
[Required]
public int Id { get; set; }
[Required]
public int ProjectId { get; set; }
[Required]
public int UserId { get; set; }
public Project Project { get; set; }
public AppUsers User { get; set; }
}
首先，您需要将响应 json 映射到类型
namespace Response
{
public class ProjectManager
{
public int id { get; set; }
public int projectId { get; set; }
public int userId { get; set; }
public Project project { get; set; }
public User user { get; set; }
}
public class Project
{
public int id { get; set; }
public string projectName { get; set; }
public DateTime plannedStartDate { get; set; }
public DateTime plannedEndDate { get; set; }
public object actualStartDate { get; set; }
public object actualEndDate { get; set; }
public string projectDescription { get; set; }
public object[] onProjects { get; set; }
public object[] projectManagers { get; set; }
}
public class User
{
public string firstName { get; set; }
public string lastName { get; set; }
public bool isProjectManager { get; set; }
public DateTime registrationTime { get; set; }
public object employees { get; set; }
public int id { get; set; }
public string userName { get; set; }
}
}
这是你的 dto
namespace Dto
{
public class GetProjectManager
{
public string ProjectManagerId { get; set; }
public string Email { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public IList<GetProjectDto> GetProjects { get; set; }
}
public class GetProjectDto
{
public int ProjectId { get; set; }
public string ProjectName { get; set; }
public DateTime PlannedStartDate { get; set; }
public DateTime PlannedEndDate { get; set; }
public DateTime? ActualStartDate { get; set; }
public DateTime? ActualEndDate { get; set; }
public string ProjectDescription { get; set; }
}
}
然后，创建自动映射器配置文件以响应 dto 映射
public class ResponseToDtoProfile : AutoMapper.Profile
{
public ResponseToDtoProfile()
{
CreateMap<Response.Project, Dto.GetProjectDto>()
.ForMember(dst => dst.ProjectId, opt => opt.MapFrom(src => src.id))
.ForMember(dst => dst.ProjectName, opt => opt.MapFrom(src => src.projectName))
.ForMember(dst => dst.PlannedStartDate, opt => opt.MapFrom(src => src.plannedStartDate))
.ForMember(dst => dst.PlannedEndDate, opt => opt.MapFrom(src => src.plannedEndDate))
.ForMember(dst => dst.ActualStartDate, opt => opt.MapFrom(src => src.actualStartDate))
.ForMember(dst => dst.ActualEndDate, opt => opt.MapFrom(src => src.actualEndDate))
.ForMember(dst => dst.ProjectDescription, opt => opt.MapFrom(src => src.projectDescription));
CreateMap<Response.ProjectManager, Dto.GetProjectManager>()
.ForMember(dst => dst.ProjectManagerId, opt => opt.MapFrom(src => src.id))
.ForMember(dst => dst.FirstName, opt => opt.MapFrom(src => src.user.firstName))
.ForMember(dst => dst.LastName, opt => opt.MapFrom(src => src.user.lastName))
.ForMember(dst => dst.GetProjects, opt => opt.MapFrom(src => src.project));
}
}
要投影 json 数组，让我们在集合上添加一个扩展方法
public static class ExtensionsHelper
{
public static List<TProjection> ProjectAsCollection<TProjection>(this IEnumerable<object> items) where TProjection : class
{
//var adapter = <Create Type Adapter>
return adapter.Adapt<List<TProjection>>(items);
}
}
最后，您可以将 json 数组投影到您的 dto。
static void Main(string[] args)
{
string jsonString = "[ { \"id\": 1, \"projectId\": 1, \"userId\": 1, \"project\": { \"id\": 1, \"projectName\": \"iDocument-FBAG\", \"plannedStartDate\": \"2019-07-03T00:00:00\", \"plannedEndDate\": \"2019-07-10T00:00:00\", \"actualStartDate\": null, \"actualEndDate\": null, \"projectDescription\": \"The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.\", \"onProjects\": [], \"projectManagers\": [] }, \"user\": { \"firstName\": \"Abc\", \"lastName\": \"Efg\", \"isProjectManager\": true, \"registrationTime\": \"2019-06-28T19:28:55.8386138\", \"employees\": null, \"id\": 1, \"userName\": \"xyz@abc.com\" } }, { \"id\": 3, \"projectId\": 8, \"userId\": 1, \"project\": { \"id\": 8, \"projectName\": \"Aquatrols-FBAG\", \"plannedStartDate\": \"2019-07-03T00:00:00\", \"plannedEndDate\": \"2019-07-10T00:00:00\", \"actualStartDate\": null, \"actualEndDate\": null, \"projectDescription\": \"The client wants to enhance their existing .Net application. They have a WebForms application that uses DevExpress controls. They would like to start by implementing a chart type and creating a reusable report, also use that reusable report to implement some new reports.\", \"onProjects\": [], \"projectManagers\": [] }, \"user\": { \"firstName\": \"Abc\", \"lastName\": \"Efg\", \"isProjectManager\": true, \"registrationTime\": \"2019-06-28T19:28:55.8386138\", \"employees\": null, \"id\": 1, \"userName\": \"xyz@abc.com\" } } ]";
var rootObject = Newtonsoft.Json.JsonConvert.DeserializeObject<Response.ProjectManager[]>(jsonString).ToList().ProjectAsCollection<Dto.GetProjectManager>();
}
我希望这能回答问题。
I had to play around with the CreateMap in the AutoMapper profile and it solved my problem.
这就是我定义映射的方式。
CreateMap<ProjectManager, GetProjectDto>()
.ForMember(dst => dst.ProjectId, opt => opt.MapFrom(src => src.Project.Id))
.ForMember(dst => dst.ProjectName, opt => opt.MapFrom(src => src.Project.ProjectName))
.ForMember(dst => dst.PlannedStartDate, opt => opt.MapFrom(src => src.Project.PlannedStartDate))
.ForMember(dst => dst.PlannedEndDate, opt => opt.MapFrom(src => src.Project.PlannedEndDate))
.ForMember(dst => dst.ActualStartDate, opt => opt.MapFrom(src => src.Project.ActualStartDate))
.ForMember(dst => dst.ActualEndDate, opt => opt.MapFrom(src => src.Project.ActualEndDate))
.ForMember(dst => dst.ProjectDescription, opt => opt.MapFrom(src => src.Project.ProjectDescription));
CreateMap<List<ProjectManager>, GetProjectManager>()
.ForMember(dst => dst.ProjectManagerId,
opt => opt.MapFrom(src =>
src.FirstOrDefault().UserId))
.ForMember(dst => dst.FirstName,
opt => opt.MapFrom(src =>
src.FirstOrDefault().User.FirstName))
.ForMember(dst => dst.LastName,
opt => opt.MapFrom(src =>
src.FirstOrDefault().User.LastName))
.ForMember(dst => dst.Email,
opt => opt.MapFrom(src =>
src.FirstOrDefault().User.Email))
.ForMember(dst => dst.GetProjects,
opt => opt.MapFrom(src =>
src.Select(x => new ProjectManager
{
Project = x.Project
})));