aspnet zero Swagger 不出现Authorize按钮的解决办法

aspnet zero的Swagger默认没有Authorize 按钮，这样测试起来很不方便，经过一番操作，终于成功解决了。

其实比较简单，只要在web.Host项目里的startup.cs里的代码添加一些代码就可以了：

原来的代码：

 services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1", new Info { Title = "FlightProxyFee API", Version = "v1" });
                options.DocInclusionPredicate((docName, description) => true);
}

　　新增加代码：

 services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1", new Info { Title = "FlightProxyFee API", Version = "v1" });
                options.DocInclusionPredicate((docName, description) => true);

                //新增加代码
                options.AddSecurityDefinition("Bearer", new ApiKeyScheme
                {
                    Description = "JWT Authorization header using the Bearer scheme. Example: \"Authorization: Bearer {token}\"",
                    Name = "Authorization",
                    In = "header",
                    Type = "apiKey"
                });
            });