1、创建 Blazor Server 应用，目标框架 .net 5.0，勾选 配置 HTTPS(H), 创建。
2、创建 Protos\greet.proto，内容如下：
syntax = "proto3";
option csharp_namespace = "GrpcGreeter";
package greet;
// The greeting service definition.
service Greeter {
// Sends a greeting
rpc SayHello (HelloRequest) returns (HelloReply);
}
// The request message containing the user's name.
message HelloRequest {
string name = 1;
}
// The response message containing the greetings.
message HelloReply {
string message = 1;
}
3、添加引用包，项目文件如下：
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net5.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<None Remove="Protos\greet.proto" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="Grpc.AspNetCore" Version="2.39.0" />
<PackageReference Include="Grpc.AspNetCore.Web" Version="2.39.0" />
</ItemGroup>
<ItemGroup>
<Protobuf Include="Protos\greet.proto" GrpcServices="Server" />
</ItemGroup>
<ItemGroup>
<Folder Include="Protos\" />
</ItemGroup>
</Project>
4、创建文件夹 Services，并再该文件夹中，添加类 GreeterService，代码如下：
public class GreeterService : Greeter.GreeterBase
{
private readonly ILogger<GreeterService> _logger;
public GreeterService(ILogger<GreeterService> logger)
{
_logger = logger;
}
public override Task<HelloReply> SayHello(HelloRequest request, ServerCallContext context)
{
return Task.FromResult(new HelloReply
{
Message = "Hello " + request.Name
});
}
}
5、在 _Imports.razor，文件中，添加引用
@using Grpc.AspNetCore.Web
@using Grpc.AspNetCore
6、在 Startup.cs 文件中，添加
services.AddGrpc();
app.UseGrpcWeb(new GrpcWebOptions { DefaultEnabled = true });
endpoints.MapGrpcService<GreeterService>();
代码如下：
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.
// For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
public void ConfigureServices(IServiceCollection services)
{
services.AddRazorPages();
services.AddServerSideBlazor();
services.AddSingleton<WeatherForecastService>();
services.AddGrpc();
}
// 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();
}
else
{
app.UseExceptionHandler("/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
//app.UseGrpcWeb();
app.UseGrpcWeb(new GrpcWebOptions { DefaultEnabled = true });
app.UseEndpoints(endpoints =>
{
endpoints.MapBlazorHub();
endpoints.MapFallbackToPage("/_Host");
endpoints.MapGrpcService<GreeterService>();
});
}
}
运行后，https://localhost:5001，该地址，还是无法连接？不知道是哪里出错了?
项目地址：https://github.com/Sg3361382/GrpcBlazorServer
