LindDotNetCore~授权中间件的介绍-白红宇

LindDotNetCore~授权中间件的介绍

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发布时间：2019-06-24

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LindDotNetCore中间件

大叔认识中间件就是主要对http请求进行拦截，然后添加具体个性化功能的逻辑，这种把请求切开，添加新逻辑的方式一般称为面向方面的逻辑AOP！

授权中间件

请求链跟踪中间件

响应时间中间件

授权中间件

请求有效性的校验

授权参数

///  /// 授权配置 /// 
 public class AuthorizationConfig {     ///      /// 统一密钥     /// 
     public string EncryptKey { get; set; }     ///      /// 过期时间秒数     /// 
     public int ExpiredSecond { get; set; }     ///      /// 被授权的app     /// 
     public string[] AppList { get; set; } }

客户端请求参数

///  /// 从http请求发过来的授权实体 /// 
 public class AuthorizationRequestInfo {     public string ApplicationId { get; set; }     public string Timestamp { get; set; }     public string Sinature { get; set; } }

请求拦截器，处理请求有效性，对app，过期时间，加密方式进行校验

string computeSinature = MD5($"{requestInfo.ApplicationId}-{requestInfo.Timestamp}-{_options.EncryptKey}"); double tmpTimestamp; if (computeSinature.Equals(requestInfo.Sinature) &&     double.TryParse(requestInfo.Timestamp, out tmpTimestamp)) {     if (ValidateExpired(tmpTimestamp, _options.ExpiredSecond))     {         await ReturnTimeOut(context);     }     else     {         await ValidateApp(context, requestInfo.ApplicationId);     } } else {     await ReturnNotAuthorized(context); }

为开发人员提供友好的扩展方法，用来注册中间件

///  /// 注册授权服务-step1 /// 
 /// The 
     for adding services. /// A delegate to configure the 
    . /// 
     public static IServiceCollection AddLindAuthrization(this IServiceCollection services, Action
    
      configureOptions = null) {     if (services == null)     {         throw new ArgumentNullException(nameof(services));     }     var options = new AuthorizationConfig();     configureOptions?.Invoke(options);     ObjectMapper.MapperTo(options, ConfigFileHelper.Get
     
      ());     services.AddSingleton(options);     return services; }  /// 
       /// 使用授权中间件-step2 /// 
 /// 
       /// 
       /// 
       public static IApplicationBuilder UseLindAuthrization(this IApplicationBuilder builder) {     if (builder == null)     {         throw new ArgumentNullException(nameof(builder));     }     var options = builder.ApplicationServices.GetService
      
       ();     return builder.UseMiddleware
       
        (options); }

使用授权中间件Startup中注册

// 注册服务 services.AddLindAuthrization(options => {     options.EncryptKey = "abc123";     options.ExpiredSecond = 50;     options.AppList = new string[] { "1", "2", "3" }; }); // 注册中间件　 public void Configure(IApplicationBuilder app, IHostingEnvironment env) {     if (env.IsDevelopment())     {         app.UseDeveloperExceptionPage();     }     app.UseLindAuthrization();     app.UseMvc(); }