写在前面
是这样的，我们现在接口使用了Ocelot做网关，Ocelot里面集成了基于IdentityServer4的开发的授权中心用于对Api资源的保护。问题来了，我们的Api用了SwaggerUI做接口的自文档，那就蛋疼了，你接入了IdentityServer4的Api，用SwaggerUI调试、调用接口的话，妥妥的401，未授权啊。那有小伙伴就会说了，你SwaggerUI的Api不经过网关不就ok了？诶，好办法。但是：
- 我不想改变Url规则啊，我是
/api开头的Url都是经过网关的，如果不经过网关要加端口或者改变Url规则，会给其他部门的同事带来麻烦（多个Url规则容易混淆）； - 另外是，因为生产环境是接入了IdentityServer4，我想测试环境从一开始就需要调用方熟悉的接入，避免平时用没有经过授权中心的Url调试，一到生产就出问题。
ok，废话讲得有点多，我们就直奔主题。
下面我们需要创建两个示例项目：
1、IdentityServer4的授权中心；
2、使用SwaggerUI做自文档的WebApi项目；
本文源码地址：https://github.com/gebiWangshushu/cnblogs-demos/tree/master/SwggerUI.IdentityServer4.Example
构建基于IdentityServer4授权中心
1、新建空白解决方案，并添加一个空的WebApi项目，IdentityServer
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2、引用包。
Install-Package IdentityServer4
3、添加配置类：Config.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
namespace IdentityServer
{
public class Startup
{
public IHostingEnvironment Environment { get; }
public Startup(IHostingEnvironment environment)
{
Environment = environment;
}
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
var builder = services.AddIdentityServer()
.AddInMemoryIdentityResources(Config.GetIdentityResources())
.AddInMemoryApiResources(Config.GetApis())
.AddInMemoryClients(Config.GetClients())
.AddTestUsers(Config.GetUsers());
if (Environment.IsDevelopment())
{
builder.AddDeveloperSigningCredential();
}
else
{
throw new Exception("need to configure key material");
}
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseIdentityServer();
app.UseIdentityServer();
app.UseMvcWithDefaultRoute();
}
}
}
4、修改Startup.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
namespace IdentityServer
{
public class Startup
{
public IHostingEnvironment Environment { get; }
public Startup(IHostingEnvironment environment)
{
Environment = environment;
}
public void ConfigureServices(IServiceCollection services)
{
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
var builder = services.AddIdentityServer()
.AddInMemoryIdentityResources(Config.GetIdentityResources())
.AddInMemoryApiResources(Config.GetApis())
.AddInMemoryClients(Config.GetClients())
.AddTestUsers(Config.GetUsers());
if (Environment.IsDevelopment())
{
builder.AddDeveloperSigningCredential();
}
else
{
throw new Exception("need to configure key material");
}
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseIdentityServer();
app.UseIdentityServer();
app.UseMvcWithDefaultRoute();
}
}
}
ok,跑起来了
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使用SwaggerUI做自文档的WebApi项目
1、添加WebApi项目，SwaggerUIApi
现在项目结构这样：
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2、先添加SwaggerUI，先不接入IdentityServer
修改Startup.cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Swashbuckle.AspNetCore.Swagger;
namespace SwggerUIApi
{
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.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new Info
{
Version = "v1",
Title = "ToDo API",
Description = "A simple example ASP.NET Core Web API",
TermsOfService = "None",
Contact = new Contact
{
Name = "Shayne Boyer",
Email = string.Empty,
Url = "https://twitter.com/spboyer"
},
License = new License
{
Name = "Use under LICX",
Url = "https://example.com/license"
}
});
var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
c.IncludeXmlComments(xmlPath);
});
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseSwagger();
// Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.),
// specifying the Swagger JSON endpoint.
app.UseSwaggerUI(c =>
{
c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
});
app.UseMvc();
}
}
}
得到这样的SwaggerUI：
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我们调用一下接口：
杠杠的200：
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3、接口项目我们接入IdentityServer4
修改：Startup.cs ,ConfigureServices方法，
.AddIdentityServerAuthentication(options =>
{
options.Authority = "http://localhost:5000"; // IdentityServer服务器地址
options.ApiName = "swagger_api"; // 用于针对进行身份验证的API资源的名称
options.RequireHttpsMetadata = false; // 指定是否为HTTPS
});
修改：Startup.cs ,Configure方法
app.UseAuthentication();
Ok，可以看到我们接入进去了，401，未授权了；
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3、接入IdentityServer
1、添加授权响应操作的过滤器，AuthResponsesOperationFilter.cs
using Microsoft.AspNetCore.Authorization;
using Swashbuckle.AspNetCore.Swagger;
using Swashbuckle.AspNetCore.SwaggerGen;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace SwggerUIApi
{
public class AuthResponsesOperationFilter : IOperationFilter
{
public void Apply(Operation operation, OperationFilterContext context)
{
//获取是否添加登录特性
var authAttributes = context.MethodInfo.DeclaringType.GetCustomAttributes(true)
.Union(context.MethodInfo.GetCustomAttributes(true))
.OfType<AuthorizeAttribute>().Any();
if (authAttributes)
{
operation.Responses.Add("401", new Response { Description = "暂无访问权限" });
operation.Responses.Add("403", new Response { Description = "禁止访问" });
operation.Security = new List<IDictionary<string, IEnumerable<string>>>
{
new Dictionary<string, IEnumerable<string>> {{"oauth2", new[] { "swagger_api" } }}
};
}
}
}
}
2、修改Startup.cs ,ConfigureServices方法的，services.AddSwaggerGen()
配置成这样：
services.AddSwaggerGen(c =>
{
c.SwaggerDoc("v1", new Info
{
Version = "v1",
Title = "ToDo API",
Description = "A simple example ASP.NET Core Web API",
TermsOfService = "None",
Contact = new Contact
{
Name = "Shayne Boyer",
Email = string.Empty,
Url = "https://twitter.com/spboyer"
},
License = new License
{
Name = "Use under LICX",
Url = "https://example.com/license"
}
});
var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
c.IncludeXmlComments(xmlPath);
//接入identityserver
c.AddSecurityDefinition("oauth2", new OAuth2Scheme
{
Flow = "implicit", // 只需通过浏览器获取令牌（适用于swagger）
AuthorizationUrl = "http://localhost:5000/connect/authorize",//获取登录授权接口
Scopes = new Dictionary<string, string> {
{ "swagger_api_scopde", "swagger_api access" }//指定客户端请求的api作用域。 如果为空，则客户端无法访问
}
});
c.OperationFilter<AuthResponsesOperationFilter>();
});
3、我们还需给授权中心添加一个登陆界面
下载这个两个文件夹，丢到IdentityServer项目下面：
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项目结构：
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4、我们运行看看
先启动Identityserver项目
运行SwaggerUI可以看到，这两个地方了个小锁头，表示已启用安全保护：
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我们点一下上面的按钮：
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哇，我们跳到了这里：
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输入：alice/alice,点登录：
哇哇：
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当然是Yes啦，然后这边变成这样了：
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这是已获得授权状态，我们再次调用看看：
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这里我们看到已经调用成功，仔细看请求，与前面简短的请求不同的是，现在请求里面带了access_token了，
这才是我们折腾这么久得来的宝贝。
总结
写得有点匆忙，希望大家能看得懂[捂脸];
源码地址：https://github.com/gebiWangshushu/cnblogs-demos/tree/master/SwggerUI.IdentityServer4.Example
参考
https://github.com/domaindrivendev/Swashbuckle.AspNetCore
https://github.com/IdentityServer/IdentityServer4
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