{ "source": { "entityId": 1, "entityName": "Example", "nestedEntity": { "nestedEntityId": 2, "nestedEntityName": "Nested Example" } }, "destination": { "entityId": 1, "entityName": "Example", "nestedEntityId": 2, "nestedEntityName": "Nested Example" } }

上述JSON数据表示源实体和目标实体的结构。我们使用Automapper来将源实体映射到目标实体。

首先，我们需要在Startup.cs文件中配置Automapper:

using AutoMapper;

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddAutoMapper(typeof(Startup));
        // Other configurations...
    }
}

接下来，我们需要创建一个DTO类，用于表示源实体和目标实体的结构：

public class SourceEntity
{
    public int EntityId { get; set; }
    public string EntityName { get; set; }
    public NestedEntity NestedEntity { get; set; }
}

public class DestinationEntity
{
    public int EntityId { get; set; }
    public string EntityName { get; set; }
    public int NestedEntityId { get; set; }
    public string NestedEntityName { get; set; }
}

public class NestedEntity
{
    public int NestedEntityId { get; set; }
    public string NestedEntityName { get; set; }
}

然后，我们可以在控制器中使用Automapper来进行映射：

using AutoMapper;

[ApiController]
[Route("[controller]")]
public class EntityController : ControllerBase
{
    private readonly IMapper _mapper;

    public EntityController(IMapper mapper)
    {
        _mapper = mapper;
    }

    [HttpPost]
    public ActionResult PostEntity(SourceEntity source)
    {
        var destination = _mapper.Map(source);
        // Save destination entity to database or perform other operations
        return destination;
    }

    [HttpPut("{id}")]
    public ActionResult PutEntity(int id, SourceEntity source)
    {
        var destination = _mapper.Map(source);
        // Update destination entity in database or perform other operations
        return destination;
    }
}

这样，当我们发送POST请求或PUT请求时，Automapper会自动将源实体映射到目标实体，并返回映射后的目标实体作为响应。