【.net core 7】新建net core web api并引入日志、处理请求跨域以及发布

效果图：
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1.新建.net core web api项目

选择src文件夹==》添加==》新建项目
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输入框搜索：web api ==》选择ASP.NET Core Web API

输入项目名称、选择位置为项目的 src文件夹下

我的项目是net 7.0版本，实际选择请看自己的项目规划

2.处理Program入口文件引入日志和新建Startup.cs

需要安装NuGet程序依赖包：Newtonsoft.Json、Serilog.AspNetCore、Serilog.Sinks.Async、Serilog.Sinks.File
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Program文件代码如下：

    /// <summary>/// /// </summary>public class Program{/// <summary>/// /// </summary>/// <param name="args"></param>public static int Main(string[] args){Log.Logger = new LoggerConfiguration()
#if DEBUG.MinimumLevel.Debug()
#else.MinimumLevel.Information()
#endif.MinimumLevel.Override("Microsoft", LogEventLevel.Information).MinimumLevel.Override("Microsoft.EntityFrameworkCore", LogEventLevel.Warning).Enrich.FromLogContext().WriteTo.Async(c => c.File("Logs/logs.txt", rollingInterval: RollingInterval.Hour))
#if DEBUG.WriteTo.Async(c => c.Console())
#endif.CreateLogger();// Wrap creating and running the host in a try-catch blocktry{Log.Information("Starting host");CreateHostBuilder(args).Build().Run();return 0;}catch (Exception ex){Log.Fatal(ex, "Host terminated unexpectedly");return 1;}finally{Log.CloseAndFlush();}}/// <summary>/// 载入Startup配置、以及新增日志/// </summary>/// <param name="args"></param>/// <returns></returns>public static IHostBuilder CreateHostBuilder(string[] args) =>Host.CreateDefaultBuilder(args).UseSerilog().ConfigureWebHostDefaults(webBuilder =>{var configuration = new ConfigurationBuilder().AddJsonFile("appsettings.json").Build();var url = configuration["Urls"];webBuilder.UseUrls(url);webBuilder
#if !DEBUG.UseEnvironment("ASPNETCORE_HOSTINGSTARTUPASSEMBLIES")
#endif.UseStartup<Startup>();});}

Startup文件代码如下

/// <summary>
/// 
/// </summary>
public class Startup
{/// <summary>/// /// </summary>/// <param name="configuration"></param>public Startup(IConfiguration configuration){Configuration = configuration;}/// <summary>/// /// </summary>public IConfiguration Configuration { get; }/// <summary>/// This method gets called by the runtime. Use this method to add services to the container./// </summary>/// <param name="services"></param>public void ConfigureServices(IServiceCollection services){services.AddControllers();services.AddSwaggerGen(c =>{c.SwaggerDoc("v1", new OpenApiInfo { Title = "这里替换成你新建webApi项目的名称", Version = "v1" });var basePath = PlatformServices.Default.Application.ApplicationBasePath;var XmlPath = Path.Combine(basePath, "这里替换成你新建webApi项目的名称.xml");//此处生成xml文档c.IncludeXmlComments(XmlPath);});//处理跨域问题services.AddCors(option => {option.AddPolicy("any", policy =>{policy.SetIsOriginAllowed(_ => true)   //允许所有客户端地址请求.AllowAnyHeader().AllowAnyMethod().AllowCredentials();});});services.AddMemoryCache();services.AddHttpContextAccessor();}/// <summary>/// This method gets called by the runtime. Use this method to configure the HTTP request pipeline./// </summary>/// <param name="app"></param>/// <param name="env"></param>public void Configure(IApplicationBuilder app, IWebHostEnvironment env){if (env.IsDevelopment()){app.UseDeveloperExceptionPage();}app.UseSerilogRequestLogging();app.UseRouting();app.UseCors("any");//处理跨域问题app.UseSwagger();app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "这里替换成你新建webApi项目的名称 v1"));app.UseAuthorization();app.UseEndpoints(endpoints =>{endpoints.MapControllers().RequireCors("any");});}
}

appsettings.json代码如下

{"Logging": {"IncludeScopes": false,"Debug": {"LogLevel": {"Default": "Warning"}},"Console": {"LogLevel": {"Default": "Warning"}},"LogLevel": {"Default": "Information","Microsoft": "Warning","Microsoft.Hosting.Lifetime": "Information"}},"Urls": "http://*:44375;","AllowedHosts": "*"}

3.处理launchSettings.json文件，使本地启动项目时是以iis运行

{"iisSettings": {"windowsAuthentication": false,"anonymousAuthentication": true,"iisExpress": {"applicationUrl": "http://localhost:44375","sslPort": 0}},"profiles": {"IIS Express": {"commandName": "IISExpress","launchBrowser": true,"launchUrl": "swagger","environmentVariables": {"ASPNETCORE_ENVIRONMENT": "Development","ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "SkyAPM.Agent.AspNetCore"}},"这里替换成你新建webApi项目的名称": {"commandName": "Project","launchBrowser": true,"dotnetRunMessages": true,"launchUrl": "swagger","applicationUrl": "http://localhost:44375","environmentVariables": {"ASPNETCORE_ENVIRONMENT": "Development","ASPNETCORE_HOSTINGSTARTUPASSEMBLIES": "SkyAPM.Agent.AspNetCore"}}}
}

处理在文件里生成xml文档
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4.在Controllers控制器写接口

在项目的Controllers文件夹下，新建一个xxxxController.cs

 /// <summary>/// 名称/// </summary>[ApiController][Route("outApi/[controller]/[action]")]public class xxxxController : ControllerBase{private readonly IHttpContextAccessor _httpContextAccessor;/// <summary>/// /// </summary>public questionController(IHttpContextAccessor httpContextAccessor){_httpContextAccessor = httpContextAccessor;}/// <summary>/// 获取请求客户端的ip地址/// </summary>/// <returns></returns>[HttpGet]public async Task<string> testIP(){Log.Information("IP:" + Request.HttpContext.Connection.RemoteIpAddress.ToString() + "InputQuestion入参：" );string ipAddress = _httpContextAccessor.HttpContext.Connection.RemoteIpAddress?.ToString();return ipAddress;}}