init project

QRCodeService/Application/Commands/CreateLinkCommand.cs

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+using MediatR;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Application.Commands
+{
+    public class CreateLinkCommand : IRequest<bool>
+    {
+        
+    }
+}

QRCodeService/Application/Commands/CreateLinkCommandHandler.cs

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+using MediatR;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Application.Commands
+{
+    public class CreateLinkCommandHandler : IRequestHandler<CreateLinkCommand, bool>
+    {
+        public Task<bool> Handle(CreateLinkCommand request, CancellationToken cancellationToken)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

QRCodeService/Application/Queries/GetLinkQueryHandler.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Application.Queries
+{
+    public class GetLinkQueryHandler
+    {
+        
+    }
+}

QRCodeService/Application/Queries/ILinkQueries.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Application.Queries
+{
+    public interface ILinkQueries
+    {
+        Task<Link> GetLinkAsync(string shortCode);
+    }
+}

QRCodeService/Application/Queries/LinkQueries.cs

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+using MediatR;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Dapper;
+using MySqlConnector;
+
+namespace QRCodeService.Application.Queries
+{
+    public class LinkQueries : ILinkQueries
+    {
+        readonly string _connectionString;
+
+        public LinkQueries(string connectionString)
+        {
+            _connectionString = connectionString;
+        }
+
+        public async Task<Link> GetLinkAsync(string shortCode)
+        {
+            using(var connection = new MySqlConnection(_connectionString))
+            {
+                connection.Open();
+                var link = await connection.QueryAsync<Link>(
+                    @"SELECT A FROM B WHERE ShortCode = @shortCode",new {shortCode });
+                return link.Single();
+            }
+        }
+    }
+}

QRCodeService/Application/Queries/LinkViewModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Application.Queries
+{
+    public class Link
+    {
+        public string ShortCode { get; set; }
+
+        public string FullUrl { get; set; }
+    }
+}

QRCodeService/Controllers/GenController.cs

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+using Domain.AggregateModel.LinkAggregate;
+using Microsoft.AspNetCore.Mvc;
+using QRCodeService.Models;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Security.Cryptography;
+using Domain.AggregateModel.AppAggregate;
+using Base62;
+using QRCodeService.Extensions;
+
+namespace QRCodeService.Controllers
+{
+    /// <summary>
+    /// 生成二维码图片
+    /// </summary>
+    [Route("api/[controller]")]
+    [ApiController]
+    public class GenController:ControllerBase
+    {
+        readonly ILinkRepository linkRepository;
+        readonly IAppRepository appRepository;
+
+        public GenController(ILinkRepository linkRepository, IAppRepository appRepository)
+        {
+            this.linkRepository = linkRepository;
+            this.appRepository = appRepository;
+        }
+
+        [HttpPost]
+        public async  Task<IActionResult> CreateLink(GenInputModel model)
+        {
+
+            var app = await appRepository.GetAsync(model.AppId);
+            if (app == null)
+            {
+                return BadRequest();
+            }
+            using(var md5 = MD5.Create())
+            {
+                var result = md5.ComputeHash(Encoding.UTF8.GetBytes($"{model.AppId}{model.SuffixUrl}{model.Time}{app.AppKey}"));
+                var sign = BitConverter.ToString(result);
+                if (sign != model.Sign)
+                {
+                    return BadRequest();
+                }
+            }
+            var shortCode = $"{model.SuffixUrl}".ToMD5().ToBase62();
+            var link = new Link(app.BaseUrl, model.SuffixUrl,1);
+            linkRepository.Add(link);
+            await linkRepository.UnitOfWork.SaveEntitiesAsync();
+            return Ok(link.ShortCode);
+        }
+    }
+}

QRCodeService/Controllers/GoController.cs

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+using Domain.AggregateModel.LinkAggregate;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Controllers
+{
+    /// <summary>
+    /// 跳转url请求的地址
+    /// </summary>
+    [Route("{shortCode}")]
+    [ApiController]
+    public class GoController: ControllerBase
+    {
+        readonly ILinkRepository LinkRepository; 
+        public GoController(ILinkRepository linkRepository)
+        {
+            LinkRepository = linkRepository;
+        }
+        [HttpGet]
+        public async Task<IActionResult> Get(string shortcode)
+        {
+            var link = await LinkRepository.GetAsync(shortcode);
+            if (link == null)
+            {
+                return NotFound();
+            }
+            return Redirect(link.FullUrl);
+        }
+    }
+}

QRCodeService/Controllers/ImageController.cs

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+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using QRCoder;
+using System.IO;
+
+namespace QRCodeService.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class ImageController : ControllerBase
+    {
+        [Route("{shortCode}")]
+        public IActionResult Get(string shortCode)
+        {
+            var qrCodeGenerator = new QRCodeGenerator();
+            var data = qrCodeGenerator.CreateQrCode("www.baidu.com", QRCodeGenerator.ECCLevel.Q);
+            var qrCode = new QRCode(data);
+            using (var stream = new MemoryStream())
+            {
+                qrCode.GetGraphic(20).Save(stream, System.Drawing.Imaging.ImageFormat.Png);
+                return File(stream.ToArray(), "image/png", "qrcode.png");
+            }
+        }
+    }
+}

QRCodeService/Controllers/PlaygroundController.cs

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+using Base62;
+using Microsoft.AspNetCore.Mvc;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Controllers
+{
+    [Route("[controller]/[action]")]
+    public class PlaygroundController:ControllerBase
+    {
+        public IActionResult GenShortCode(string url)
+        {
+            var codes = new string[2];
+            using (var md5 = MD5.Create())
+            {
+                var chunkSize = 8;
+                var result = md5.ComputeHash(Encoding.UTF8.GetBytes(url));
+                for (int i = 0; i < 2; i++)
+                {
+                    var first = result.Take(chunkSize).ToArray();
+                    //即超过30位的忽略处理
+                    var res = BitConverter.ToInt64(first);
+                    var code = res.ToBase62();
+                    codes[i] = code;
+                    result = result.Skip(chunkSize).ToArray();
+                }
+                return Ok(codes);
+            }
+        } 
+    }
+}

QRCodeService/Extensions/StringExtension.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Extensions
+{
+    public static class StringExtension
+    {
+        public static byte[] ToMD5(this string value)
+        {
+            using (var md5 = MD5.Create())
+            {
+                var result = md5.ComputeHash(Encoding.UTF8.GetBytes(value));
+                return result;
+            }
+        }
+    }
+}

QRCodeService/Models/GenInputModel.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QRCodeService.Models
+{
+    public class GenInputModel
+    {
+        public int AppId { get; set; }
+        public string Time { get; set; }
+        public string SuffixUrl { get; set; }
+        public string Sign { get; set; }
+    }
+}

QRCodeService/Program.cs

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+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace QRCodeService
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            CreateHostBuilder(args).Build().Run();
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) =>
+            Host.CreateDefaultBuilder(args)
+                .ConfigureWebHostDefaults(webBuilder =>
+                {
+                    webBuilder.UseStartup<Startup>();
+                });
+    }
+}

QRCodeService/Properties/launchSettings.json

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+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:58886",
+      "sslPort": 0
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "QRCodeService": {
+      "commandName": "Project",
+      "dotnetRunMessages": "true",
+      "launchBrowser": true,
+      "launchUrl": "swagger",
+      "applicationUrl": "http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

QRCodeService/QRCodeService.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Base62-Net" Version="1.2.157201" />
+    <PackageReference Include="Dapper" Version="2.0.78" />
+    <PackageReference Include="FluentValidation.AspNetCore" Version="9.5.1" />
+    <PackageReference Include="MediatR.Extensions.Microsoft.DependencyInjection" Version="9.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="5.0.1" NoWarn="NU1605" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="5.0.1" NoWarn="NU1605" />
+    <PackageReference Include="MySqlConnector" Version="1.2.0" />
+    <PackageReference Include="QRCoder" Version="1.4.1" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="5.6.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Domain\Domain.csproj" />
+    <ProjectReference Include="..\Infrastructure\Infrastructure.csproj" />
+  </ItemGroup>
+
+  <ProjectExtensions><VisualStudio><UserProperties properties_4launchsettings_1json__JsonSchema="" /></VisualStudio></ProjectExtensions>
+
+</Project>

QRCodeService/QRCodeService.csproj.user

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DebuggerFlavor>ProjectDebugger</DebuggerFlavor>
+  </PropertyGroup>
+  <PropertyGroup>
+    <ActiveDebugProfile>QRCodeService</ActiveDebugProfile>
+    <Controller_SelectedScaffolderID>ApiControllerEmptyScaffolder</Controller_SelectedScaffolderID>
+    <Controller_SelectedScaffolderCategoryPath>root/Common/Api</Controller_SelectedScaffolderCategoryPath>
+  </PropertyGroup>
+</Project>

QRCodeService/Startup.cs

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+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Microsoft.OpenApi.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace QRCodeService
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        public void ConfigureServices(IServiceCollection services)
+        {
+
+            services.AddControllers();
+            services.AddSwaggerGen(c =>
+            {
+                c.SwaggerDoc("v1", new OpenApiInfo { Title = "QRCodeService", Version = "v1" });
+            });
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+                app.UseSwagger();
+                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "QRCodeService v1"));
+            }
+
+            app.UseRouting();
+
+            app.UseAuthorization();
+
+            app.UseEndpoints(endpoints =>
+            {
+                endpoints.MapControllers();
+            });
+        }
+    }
+}

QRCodeService/appsettings.Development.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  }
+}

QRCodeService/appsettings.json

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+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  },
+  "AllowedHosts": "*"
+}