Net6.0 集成 Nacos -526互联

1-创建一个 WebApi

2- 添加引用

Install-Package nacos-sdk-csharp -Version 1.3.5
Install-Package nacos-sdk-csharp.AspNetCore -Version 1.3.5
Install-Package nacos-sdk-csharp.Extensions.Configuration -Version 1.3.5

3- 设置 appsettings.json

{
  "Nacos": {
    "Listeners": [ //对应配置文件
      {
        "Optional": false,
        "DataId": "common", //配置名称
        "Group": "DEFAULT_GROUP" //组名
      },
      {
        "Optional": false,
        "DataId": "user",
        "Group": "DEFAULT_GROUP"
      }
    ],
    "DefaultTimeOut": 15,
    "ListenInterval": 1000,
    "ServiceName": "userApiSrv", //服务名称
    "Namespace": "public", //对应的是命名空间的Id
    "ServerAddresses": [ "http://ip地址:8848/" ], //是Nacos的服务器地址，可以添加多个
    "UserName": "nacos",
    "Password": "1Q2w3e4r$",
    "ConfigUseRpc": false, //false-http协议，true-grpc
    "NamingUseRpc": false //false-http协议，true-grpc
  },
  "Urls": "http://*:5101"
}

　　4- nacos 服务配置配置

{
    "Serilog": {
    "Using": [ "Serilog.Sinks.Console", "Serilog.Sinks.Async", "Serilog.Sinks.File" ],
    "MinimumLevel": {
      "Default": "Information",
      "Override": {
        "Microsoft": "Information",
        "System": "Information"
      }
    },
    "Enrich": [ "FromLogContext", "WithMachineName", "WithProcessId", "WithThreadId" ],
    "Properties": {
      "ApplicationName": "GR.Nacos"
    },
    "WriteTo": [
      { "Name": "Console" },
      {
        "Name": "File",
        "Args": {
          "path": "Logs/log.log",
          "formatter": "Serilog.Formatting.Json.JsonFormatter, Serilog",
          "rollingInterval": "Day",
          "shared": true,
          "rollOnFileSizeLimit": true,
          "fileSizeLimitBytes": 102400000,
          "retainedFileCountLimit": 365,
          "outputTemplate": "{NewLine}{NewLine}Date：{Timestamp:yyyy-MM-dd HH:mm:ss.fff}{NewLine}LogLevel：{Level}{NewLine}Message：{Message}{NewLine}{Exception}"
        }
      },
      {
        "Name": "Seq",
        "Args": {
          "serverUrl": "http://localhost:8081"
        }
      }
    ]
  },
  "AllowedHosts": "*"
}

5-程序配置

using Serilog;
using Microsoft.AspNetCore.Mvc;
using System.Text.Encodings.Web;
using System.Text.Unicode;
using MicroSrv.User.HostApi.JSON;
using Kinwong.Logger;
using Kinwong.Swagger.NSwag;
using Nacos.AspNetCore.V2;
using Nacos.V2.DependencyInjection;
using MicroSrv.User.HostApi.Models;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddNacosAspNet(builder.Configuration, section: "Nacos");
builder.Services.Configure<UserInfo>(builder.Configuration.GetSection("UserInfo"));
builder.Host.UseNacosConfig("Nacos", logAction: x => x.AddSerilog());
builder.Services.AddOptions();
//builder.Services.AddNacosWeb(builder.Configuration, builder.Configuration, section: "Nacos");
var _myAllowSpecificOrigins = "_myAllowSpecificOrigins";
builder.Host.UseSerilog((context, services, logger) =>
{
    logger.ReadFrom.Configuration(context.Configuration)
          .ReadFrom.Services(services);
    logger.Enrich.FromLogContext();
});
builder.Services.Configure<ApiBehaviorOptions>(options =>
{
    //禁用自定义验证
    options.SuppressModelStateInvalidFilter = true;

    //options.InvalidModelStateResponseFactory = context =>
    //{
    //    var error = context.ModelState.GetValidationSummary();
    //    ////自定义自己想要返回的数据结果，我这里要返回的是Json对象，通过引用Newtonsoft.Json库进行转换
    //    var payload = JsonConvert.SerializeObject(Result.Error(HttpStatusCode.BadRequest.ToCode(), error));
    //    //////自定义返回的数据类型
    //    //context.HttpContext.Response.ContentType = "application/json";
    //    //////自定义返回状态码，默认为401 我这里改成 200
    //    //context.HttpContext.Response.StatusCode = StatusCodes.Status200OK;
    //    //////context.Response.StatusCode = StatusCodes.Status401Unauthorized;
    //    //////输出Json数据结果
    //    //context.HttpContext.Response.WriteAsync(payload);
    //    return new ObjectResult(error);
    //};
});
builder.Services.AddHttpContextAccessor();
builder.Services.AddCors(c =>
{
    //https://learn.microsoft.com/zh-cn/aspnet/core/security/cors?view=aspnetcore-6.0
    var cors = builder.Configuration.GetSection("Cors").Value;
    if (!string.IsNullOrWhiteSpace(cors))
    {
        c.AddPolicy(_myAllowSpecificOrigins, policy =>
        {
            policy.WithOrigins(cors.Split(','))
                .AllowAnyMethod()
                .AllowAnyHeader();
        });
    }
    else
    {
        c.AddPolicy(_myAllowSpecificOrigins, policy =>
        {
            policy.AllowAnyOrigin()
                .AllowAnyMethod()
                .AllowAnyHeader();
        });
    }
});
builder.Services.AddControllers()
    .AddJsonOptions(options =>
    {
        //https://learn.microsoft.com/zh-cn/aspnet/core/web-api/advanced/formatting?view=aspnetcore-6.0
        //配置 小写 格式，而不是默认的 camelCase 格式
        options.JsonSerializerOptions.PropertyNamingPolicy = new LowercasePolicy();
        //中文转义处理
        options.JsonSerializerOptions.Encoder = JavaScriptEncoder.Create(UnicodeRanges.All);
        //忽略大小写
        options.JsonSerializerOptions.PropertyNameCaseInsensitive = true;
    });
builder.Services.AddNSwagger(title: "User系统API接口文档", description: "API接口说明文档", contact: new NSwag.OpenApiContact { Url = "", Name = "" });


var app = builder.Build();
app.UseSerilogRequestLogging();
app.UseNSwagger();
app.UseAuthentication();
app.UseAuthorization();
// Configure the HTTP request pipeline.
app.MapControllers();
app.Run();

主要配置：

builder.Services.AddNacosAspNet(builder.Configuration, section: "Nacos");
builder.Host.UseNacosConfig("Nacos", logAction: x => x.AddSerilog());

　PS:注意一下，我看了很多文档都说，直接使用IConfiguration 文件的 Get 就能获取的 nacos 的配置，这个是错误的，反正我这边测试是行不通的，必须使用 builder.Services.Configure<UserInfo>(builder.Configuration.GetSection("UserInfo")); 然后用 IOptions<UserInfo> options 才能拿到值，错误范例如下：

6-创建一个控制器，开始使用nacos配置

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Options;
using MicroSrv.User.HostApi.Models;
using Nacos.V2;
using System.Diagnostics;

// For more information on enabling Web API for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860

namespace MicroSrv.User.HostApi.Controllers
{
    /// <summary>
    /// 配置
    /// </summary>
    [Route("api/v{version:apiVersion}/[controller]")]
    [ApiController]
    public class ConfigController : ControllerBase
    {
        private IConfiguration _configuration;
        private readonly INacosConfigService _nacosConfigSrv;
        private readonly UserInfo _user;
        private readonly UserInfo _user2;

        /// <summary>
        /// 
        /// </summary>
        /// <param name="configuration"></param>
        /// <param name="nacosConfigSrv"></param>
        /// <param name="options"></param>
        /// <param name="optionsSnapshot"></param>
        public ConfigController(IConfiguration configuration
            , INacosConfigService nacosConfigSrv
            , IOptions<UserInfo> options
            , IOptionsSnapshot<UserInfo> optionsSnapshot)
        {
            _configuration = configuration;
            _nacosConfigSrv = nacosConfigSrv;
            _user = options.Value;
            _user2 = optionsSnapshot.Value;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        [HttpGet("{id}")]
        public async Task<string> Get(int id)
        {
            string config = "";
            switch (id)
            {
                case 1:
                    var sconfig = _configuration.GetSection("Serilog");
                    config = sconfig["Using"];
                    break;
                case 2:
                    config = string.Format("old-{0},new-{1}", System.Text.Json.JsonSerializer.Serialize(_user), System.Text.Json.JsonSerializer.Serialize(_user2));
                    break;
                default:
                    config = await _nacosConfigSrv.GetConfig("common", Nacos.V2.Common.Constants.DEFAULT_GROUP, 3000);
                    break;
            }
            return config;
        }

    }
}

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