目录结构
├─MediatR_Demo
│ ├─Application
│ │ └─Movies
│ │ ├─Commands
│ │ │ └─CreateMovie
│ │ └─Queries
│ │ ├─GetMovie
│ │ └─GetMovies
│ ├─Controllers
│ ├─Core
│ │ └─Enums
│ ├─Domain
│ │ ├─DTOs
│ │ │ ├─Requests
│ │ │ │ └─Movie
│ │ │ └─Responses
│ │ │ └─Movie
│ │ └─Entities
│ │ └─Movie
│ ├─Repository
│ │ └─Context
using MediatR;
using MediatR_Demo.Core.Enums;
using MediatR_Demo.Domain.DTOs.Responses.Movie;
namespace MediatR_Demo.Application.Movies.Commands.CreateMovie;
public class CreateMovieCommand : IRequest<CreateMovieDto>
{
public CreateMovieCommand(string? title, string? description, MovieGenre? genre, int? rating)
{
Title = title;
Description = description;
Genre = genre;
Rating = rating;
}
public string? Title { get; set; }
public string? Description { get; set; }
public MovieGenre? Genre { get; set; }
public int? Rating { get; set; }
}
using MediatR;
using MediatR_Demo.Domain.DTOs.Responses.Movie;
using MediatR_Demo.Repository.Context;
namespace MediatR_Demo.Application.Movies.Commands.CreateMovie
{
public class CreateUserCommandHandler : IRequestHandler<CreateMovieCommand, CreateMovieDto>
{
private readonly ApplicationDbContext _dbContext;
public CreateUserCommandHandler(ApplicationDbContext dbContext)
{
_dbContext = dbContext;
}
public async Task<CreateMovieDto> Handle(CreateMovieCommand request, CancellationToken cancellationToken)
{
Domain.Entities.Movie.Movie movie = request.CreateMovie();
await _dbContext.Movies.AddAsync(movie);
await _dbContext.SaveChangesAsync();
return new CreateMovieDto(movie.Id);
}
}
}
using MediatR_Demo.Domain.Entities.Movie;
namespace MediatR_Demo.Application.Movies.Commands.CreateMovie
{
public static class CreateUserCommandExtension
{
public static Movie CreateMovie(this CreateMovieCommand command)
{
var movie = new Movie
(
command.Title,
command.Description,
command.Genre,
command.Rating
);
return movie;
}
}
}
using MediatR;
using MediatR_Demo.Application.Movies.Commands.CreateMovie;
using MediatR_Demo.Application.Movies.Queries.GetMovie;
using MediatR_Demo.Application.Movies.Queries.GetMovies;
using MediatR_Demo.Domain.DTOs.Requests.Movie;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
namespace MediatR_Demo.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class MovieController : ControllerBase
{
private readonly IMediator _mediator;
public MovieController(IMediator mediator)
{
_mediator = mediator;
}
[HttpGet]
public async Task<IActionResult> GetMovies()
{
var movies = await _mediator.Send(new GetMoviesQuery());
if (movies != null)
{
return Ok(movies);
}
return NotFound("No movies in database. Please add a movie first.");
}
[HttpGet("/getmovies/{id}")]
public async Task<IActionResult> GetMovie(long id)
{
var movie = await _mediator.Send(new GetMovieQuery(id));
if (movie != null)
{
return Ok(movie);
}
return NotFound($"No movie in database with ID: {id}.");
}
[HttpPost]
public async Task<IActionResult> CreateMovie([FromBody] CreateMovieRequest request)
{
var movie = await _mediator.Send(new CreateMovieCommand(
request.Title,
request.Description,
request.Genre,
request.Rating));
return Ok(movie);
}
}
}
using MediatR;
using MediatR_Demo.Repository.Context;
using Microsoft.EntityFrameworkCore;
var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
builder.Services.AddDbContext<ApplicationDbContext>(
options => options.UseSqlServer(builder.Configuration.GetConnectionString("Standard")));
builder.Services.AddMediatR(typeof(Program));
var app = builder.Build();
// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
app.UseSwagger();
app.UseSwaggerUI();
}
app.UseHttpsRedirection();
app.UseAuthorization();
app.MapControllers();
app.Run();
{
"sdk": {
"version": "6.0.423"
}
}
CQRS-and-MediatR-demo-master\MediatR_Demo\Repository\Context\ApplicationDbContext.cs
using MediatR_Demo.Domain.Entities.Movie;
using Microsoft.EntityFrameworkCore;
namespace MediatR_Demo.Repository.Context
{
public class ApplicationDbContext : DbContext
{
public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options)
{
}
public DbSet<Movie> Movies { get; set; }
}
}
set "scriptPath=%cd%"
python D:\Python.Script\zz.py "%scriptPath%"
using MediatR_Demo.Domain.DTOs.Responses.Movie;
using MediatR_Demo.Domain.Entities.Movie;
namespace MediatR_Demo.Application.Movies.Queries.GetMovie;
public static class GetMovieQueryExtensions
{
public static GetMovieDto MapTo(this Movie movie)
{
return new GetMovieDto
{
Id = movie.Id,
Title = movie.Title,
Description = movie.Description,
Genre = movie.Genre,
Rating = movie.Rating
};
}
}
using MediatR;
using MediatR_Demo.Domain.DTOs.Responses.Movie;
namespace MediatR_Demo.Application.Movies.Queries.GetMovie;
public class GetMovieQuery : IRequest<GetMovieDto>
{
public long? Id { get; set; }
public GetMovieQuery(long? id)
{
Id = id;
}
}
using MediatR;
using MediatR_Demo.Domain.DTOs.Responses.Movie;
using MediatR_Demo.Repository.Context;
using Microsoft.EntityFrameworkCore;
namespace MediatR_Demo.Application.Movies.Queries.GetMovie;
public class GetMovieQueryHandler : IRequestHandler<GetMovieQuery, GetMovieDto>
{
private readonly ApplicationDbContext _dbContext;
public GetMovieQueryHandler(ApplicationDbContext dbContext)
{
_dbContext = dbContext;
}
public async Task<GetMovieDto> Handle(
GetMovieQuery request,
CancellationToken cancellationToken
)
{
var movie = await _dbContext.Movies.Where(x => x.Id == request.Id).FirstOrDefaultAsync();
if (movie != null)
{
var movieItem = movie.MapTo();
return movieItem;
}
return null;
}
}
using MediatR;
using MediatR_Demo.Domain.DTOs.Responses.Movie;
using MediatR_Demo.Repository.Context;
using Microsoft.EntityFrameworkCore;
namespace MediatR_Demo.Application.Movies.Queries.GetMovies
{
public class GetMoviesQueryHandler : IRequestHandler<GetMoviesQuery, IList<GetMovieDto>>
{
private readonly ApplicationDbContext _dbContext;
public GetMoviesQueryHandler(ApplicationDbContext dbContext)
{
_dbContext = dbContext;
}
public async Task<IList<GetMovieDto>> Handle(GetMoviesQuery request, CancellationToken cancellationToken)
{
var movies = await _dbContext.Movies.ToListAsync();
var movieList = new List<GetMovieDto>();
foreach (var movieItem in movies)
{
var movie = movieItem.MapTo();
movieList.Add(movie);
}
return movieList;
}
}
}
CQRS-and-MediatR-demo-master\MediatR_Demo\Domain\Entities\Movie\Movie.cs
using MediatR_Demo.Core.Enums;
namespace MediatR_Demo.Domain.Entities.Movie
{
public class Movie
{
public Movie(string? title, string? description, MovieGenre? genre, int? rating)
{
Title = title;
Description = description;
Genre = genre;
Rating = rating;
}
public long Id { get; set; }
public string? Title { get; set; }
public string? Description { get; set; }
public MovieGenre? Genre { get; set; }
public int? Rating { get; set; }
}
}
CQRS-and-MediatR-demo-master\MediatR_Demo\Domain\DTOs\Responses\Movie\GetMovieDto.cs
using MediatR_Demo.Core.Enums;
namespace MediatR_Demo.Domain.DTOs.Responses.Movie
{
public class GetMovieDto
{
public long Id { get; set; }
public string? Title { get; set; }
public string? Description { get; set; }
public MovieGenre? Genre { get; set; }
public int? Rating { get; set; }
}
}
CQRS-and-MediatR-demo-master\MediatR_Demo\Domain\DTOs\Responses\Movie\CreateMovieDto.cs
namespace MediatR_Demo.Domain.DTOs.Responses.Movie
{
public class CreateMovieDto
{
public CreateMovieDto(long id)
{
Id = id;
}
public long Id { get; set; }
}
}
CQRS-and-MediatR-demo-master\MediatR_Demo\Domain\DTOs\Requests\Movie\CreateMovieRequest.cs
using MediatR_Demo.Core.Enums;
namespace MediatR_Demo.Domain.DTOs.Requests.Movie
{
public class CreateMovieRequest
{
public string? Title { get; set; }
public string? Description { get; set; }
public MovieGenre? Genre { get; set; }
public int? Rating { get; set; }
}
}
namespace MediatR_Demo.Core.Enums
{
public enum MovieGenre
{
Action,
Comedy,
Drama,
Fantasy,
Horror,
Mystery,
Romance,
Thriller,
Western
}
}
using MediatR_Demo.Domain.DTOs.Responses.Movie;
using MediatR_Demo.Domain.Entities.Movie;
namespace MediatR_Demo.Application.Movies.Queries.GetMovies
{
public static class GetMoviesQueryExtensions
{
public static GetMovieDto MapTo(this Movie movie)
{
return new GetMovieDto
{
Id = movie.Id,
Title = movie.Title,
Description = movie.Description,
Genre = movie.Genre,
Rating = movie.Rating
};
}
}
}
using MediatR;
using MediatR_Demo.Domain.DTOs.Responses.Movie;
namespace MediatR_Demo.Application.Movies.Queries.GetMovies
{
public class GetMoviesQuery : IRequest<IList<GetMovieDto>>
{
}
}
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="MediatR" Version="10.0.1" />
<PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="10.0.1" />
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.6" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.6" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.6">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
</ItemGroup>
</Project>
{
"ConnectionStrings": {
"Standard": "Server=localhost;Database=mediatr-demo;Trusted_Connection=True;"
},
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
},
"AllowedHosts": "*"
}
{
"Logging": {
"LogLevel": {
"Default": "Information",
"Microsoft.AspNetCore": "Warning"
}
}
}
Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.0.32014.148
MinimumVisualStudioVersion = 10.0.40219.1
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MediatR_Demo", "MediatR_Demo\MediatR_Demo.csproj", "{40AF7C5A-7DFD-452F-BB6F-47E42F59F27D}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Release|Any CPU = Release|Any CPU
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{40AF7C5A-7DFD-452F-BB6F-47E42F59F27D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{40AF7C5A-7DFD-452F-BB6F-47E42F59F27D}.Debug|Any CPU.Build.0 = Debug|Any CPU
{40AF7C5A-7DFD-452F-BB6F-47E42F59F27D}.Release|Any CPU.ActiveCfg = Release|Any CPU
{40AF7C5A-7DFD-452F-BB6F-47E42F59F27D}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {932BD9F0-738E-40A5-8E0B-276918C9FF07}
EndGlobalSection
EndGlobal
## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.
##
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
# User-specific files
*.rsuser
*.suo
*.user
*.userosscache
*.sln.docstates
# User-specific files (MonoDevelop/Xamarin Studio)
*.userprefs
# Mono auto generated files
mono_crash.*
# Build results
[Dd]ebug/
[Dd]ebugPublic/
[Rr]elease/
[Rr]eleases/
x64/
x86/
[Ww][Ii][Nn]32/
[Aa][Rr][Mm]/
[Aa][Rr][Mm]64/
bld/
[Bb]in/
[Oo]bj/
[Oo]ut/
[Ll]og/
[Ll]ogs/
# Visual Studio 2015/2017 cache/options directory
.vs/
# Uncomment if you have tasks that create the project's static files in wwwroot
#wwwroot/
# Visual Studio 2017 auto generated files
Generated\ Files/
# MSTest test Results
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
# NUnit
*.VisualState.xml
TestResult.xml
nunit-*.xml
# Build Results of an ATL Project
[Dd]ebugPS/
[Rr]eleasePS/
dlldata.c
# Benchmark Results
BenchmarkDotNet.Artifacts/
# .NET Core
project.lock.json
project.fragment.lock.json
artifacts/
# ASP.NET Scaffolding
ScaffoldingReadMe.txt
# StyleCop
StyleCopReport.xml
# Files built by Visual Studio
*_i.c
*_p.c
*_h.h
*.ilk
*.meta
*.obj
*.iobj
*.pch
*.pdb
*.ipdb
*.pgc
*.pgd
*.rsp
*.sbr
*.tlb
*.tli
*.tlh
*.tmp
*.tmp_proj
*_wpftmp.csproj
*.log
*.vspscc
*.vssscc
.builds
*.pidb
*.svclog
*.scc
# Chutzpah Test files
_Chutzpah*
# Visual C++ cache files
ipch/
*.aps
*.ncb
*.opendb
*.opensdf
*.sdf
*.cachefile
*.VC.db
*.VC.VC.opendb
# Visual Studio profiler
*.psess
*.vsp
*.vspx
*.sap
# Visual Studio Trace Files
*.e2e
# TFS 2012 Local Workspace
$tf/
# Guidance Automation Toolkit
*.gpState
# ReSharper is a .NET coding add-in
_ReSharper*/
*.[Rr]e[Ss]harper
*.DotSettings.user
# TeamCity is a build add-in
_TeamCity*
# DotCover is a Code Coverage Tool
*.dotCover
# AxoCover is a Code Coverage Tool
.axoCover/*
!.axoCover/settings.json
# Coverlet is a free, cross platform Code Coverage Tool
coverage*.json
coverage*.xml
coverage*.info
# Visual Studio code coverage results
*.coverage
*.coveragexml
# NCrunch
_NCrunch_*
.*crunch*.local.xml
nCrunchTemp_*
# MightyMoose
*.mm.*
AutoTest.Net/
# Web workbench (sass)
.sass-cache/
# Installshield output folder
[Ee]xpress/
# DocProject is a documentation generator add-in
DocProject/buildhelp/
DocProject/Help/*.HxT
DocProject/Help/*.HxC
DocProject/Help/*.hhc
DocProject/Help/*.hhk
DocProject/Help/*.hhp
DocProject/Help/Html2
DocProject/Help/html
# Click-Once directory
publish/
# Publish Web Output
*.[Pp]ublish.xml
*.azurePubxml
# Note: Comment the next line if you want to checkin your web deploy settings,
# but database connection strings (with potential passwords) will be unencrypted
*.pubxml
*.publishproj
# Microsoft Azure Web App publish settings. Comment the next line if you want to
# checkin your Azure Web App publish settings, but sensitive information contained
# in these scripts will be unencrypted
PublishScripts/
# NuGet Packages
*.nupkg
# NuGet Symbol Packages
*.snupkg
# The packages folder can be ignored because of Package Restore
**/[Pp]ackages/*
# except build/, which is used as an MSBuild target.
!**/[Pp]ackages/build/
# Uncomment if necessary however generally it will be regenerated when needed
#!**/[Pp]ackages/repositories.config
# NuGet v3's project.json files produces more ignorable files
*.nuget.props
*.nuget.targets
# Microsoft Azure Build Output
csx/
*.build.csdef
# Microsoft Azure Emulator
ecf/
rcf/
# Windows Store app package directories and files
AppPackages/
BundleArtifacts/
Package.StoreAssociation.xml
_pkginfo.txt
*.appx
*.appxbundle
*.appxupload
# Visual Studio cache files
# files ending in .cache can be ignored
*.[Cc]ache
# but keep track of directories ending in .cache
!?*.[Cc]ache/
# Others
ClientBin/
~$*
*~
*.dbmdl
*.dbproj.schemaview
*.jfm
*.pfx
*.publishsettings
orleans.codegen.cs
# Including strong name files can present a security risk
# (https://github.com/github/gitignore/pull/2483#issue-259490424)
#*.snk
# Since there are multiple workflows, uncomment next line to ignore bower_components
# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
#bower_components/
# RIA/Silverlight projects
Generated_Code/
# Backup & report files from converting an old project file
# to a newer Visual Studio version. Backup files are not needed,
# because we have git ;-)
_UpgradeReport_Files/
Backup*/
UpgradeLog*.XML
UpgradeLog*.htm
ServiceFabricBackup/
*.rptproj.bak
# SQL Server files
*.mdf
*.ldf
*.ndf
# Business Intelligence projects
*.rdl.data
*.bim.layout
*.bim_*.settings
*.rptproj.rsuser
*- [Bb]ackup.rdl
*- [Bb]ackup ([0-9]).rdl
*- [Bb]ackup ([0-9][0-9]).rdl
# Microsoft Fakes
FakesAssemblies/
# GhostDoc plugin setting file
*.GhostDoc.xml
# Node.js Tools for Visual Studio
.ntvs_analysis.dat
node_modules/
# Visual Studio 6 build log
*.plg
# Visual Studio 6 workspace options file
*.opt
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
*.vbw
# Visual Studio LightSwitch build output
**/*.HTMLClient/GeneratedArtifacts
**/*.DesktopClient/GeneratedArtifacts
**/*.DesktopClient/ModelManifest.xml
**/*.Server/GeneratedArtifacts
**/*.Server/ModelManifest.xml
_Pvt_Extensions
# Paket dependency manager
.paket/paket.exe
paket-files/
# FAKE - F# Make
.fake/
# CodeRush personal settings
.cr/personal
# Python Tools for Visual Studio (PTVS)
__pycache__/
*.pyc
# Cake - Uncomment if you are using it
# tools/**
# !tools/packages.config
# Tabs Studio
*.tss
# Telerik's JustMock configuration file
*.jmconfig
# BizTalk build output
*.btp.cs
*.btm.cs
*.odx.cs
*.xsd.cs
# OpenCover UI analysis results
OpenCover/
# Azure Stream Analytics local run output
ASALocalRun/
# MSBuild Binary and Structured Log
*.binlog
# NVidia Nsight GPU debugger configuration file
*.nvuser
# MFractors (Xamarin productivity tool) working folder
.mfractor/
# Local History for Visual Studio
.localhistory/
# BeatPulse healthcheck temp database
healthchecksdb
# Backup folder for Package Reference Convert tool in Visual Studio 2017
MigrationBackup/
# Ionide (cross platform F# VS Code tools) working folder
.ionide/
# Fody - auto-generated XML schema
FodyWeavers.xsd
###############################################################################
# Set default behavior to automatically normalize line endings.
###############################################################################
* text=auto
###############################################################################
# Set default behavior for command prompt diff.
#
# This is need for earlier builds of msysgit that does not have it on by
# default for csharp files.
# Note: This is only used by command line
###############################################################################
#*.cs diff=csharp
###############################################################################
# Set the merge driver for project and solution files
#
# Merging from the command prompt will add diff markers to the files if there
# are conflicts (Merging from VS is not affected by the settings below, in VS
# the diff markers are never inserted). Diff markers may cause the following
# file extensions to fail to load in VS. An alternative would be to treat
# these files as binary and thus will always conflict and require user
# intervention with every merge. To do so, just uncomment the entries below
###############################################################################
#*.sln merge=binary
#*.csproj merge=binary
#*.vbproj merge=binary
#*.vcxproj merge=binary
#*.vcproj merge=binary
#*.dbproj merge=binary
#*.fsproj merge=binary
#*.lsproj merge=binary
#*.wixproj merge=binary
#*.modelproj merge=binary
#*.sqlproj merge=binary
#*.wwaproj merge=binary
###############################################################################
# behavior for image files
#
# image files are treated as binary by default.
###############################################################################
#*.jpg binary
#*.png binary
#*.gif binary
###############################################################################
# diff behavior for common document formats
#
# Convert binary document formats to text before diffing them. This feature
# is only available from the command line. Turn it on by uncommenting the
# entries below.
###############################################################################
#*.doc diff=astextplain
#*.DOC diff=astextplain
#*.docx diff=astextplain
#*.DOCX diff=astextplain
#*.dot diff=astextplain
#*.DOT diff=astextplain
#*.pdf diff=astextplain
#*.PDF diff=astextplain
#*.rtf diff=astextplain
#*.RTF diff=astextplain