1、排除问题出现原因
1）检查Service.csproj文件
代码语言：javascript复制<ItemGroup>
<Folder Include="AutoMapperProfile" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="AutoMapper" Version="10.1.1" />
</ItemGroup>Profile路径已关联，AutoMapper库已安装
2）检查API的启动文件 Startup.cs
代码语言：javascript复制public class Startup
{
private IServiceCollection _services;
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
//autofac 新增
public ILifetimeScope AutofacContainer { get; private set; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
#region AutoMapper
List<Assembly> myAssembly = new List<Assembly>();
myAssembly.Add(Assembly.Load($"xxx.xxx.Service"));
services.AddAutoMapper(myAssembly);
services.AddScoped<IMapper, Mapper>();
#endregion
_services = services;
}
/// <summary>
/// 将内容直接注册到AutofacContainerBuilder中
/// </summary>
/// <param name="builder"></param>
public void ConfigureContainer(ContainerBuilder builder)
{
builder.RegisterRabbitMqBus();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
//autofac 新增 可选
this.AutofacContainer = app.ApplicationServices.GetAutofacRoot();
IoCContainer.InitContainer(this.AutofacContainer);
}
}mapper相关已配置
3）检查Profile文件
代码语言：javascript复制public class TestMapperProfile: global::AutoMapper.Profile
{
protected TestMapperProfile()
{
CreateMap <People, PeopleDTO>();
}
}原因找到， Profile的构造函数的访问类型为protected导致配置文件访问不到
2、解决方案
Profile的构造函数的访问类型改成public即解决问题，正确代码如下：
代码语言：javascript复制public class TestMapperProfile: global::AutoMapper.Profile
{
public TestMapperProfile() // 这里改成public！
{
CreateMap <People, PeopleDTO>();
}
}疏忽大意检查了好一会，做此纪录。
