.net core IdentityServer4 使用query参数

基本用法请参考官方文档：https://identityserver4.readthedocs.io/en/latest/index.html

这里不对具体用法进行说明，一般情况下，Startup添加验证，就可以了，代码如下

            services.AddAuthorization();
            services.AddAuthentication("Bearer")
                .AddIdentityServerAuthentication(options =>
                {
                    options.Authority = "这里写验证服务器链接";
                    options.RequireHttpsMetadata = false;
                    options.ApiName = "test";
                });

这里默认的验证token是取的header里面的Authorization参数

以下讨论的目的是：需要既可以从query里面获取token，也可以从header里面获取token

1. IdentityServerAuthentication

修改TokenRetriever来达到我们的要求

            services.AddAuthorization();
            services.AddAuthentication("Bearer")
                .AddIdentityServerAuthentication(options =>
                {
                    options.Authority = Configuration["CQMSERVICE_AUTHENDPOINT"];
                    options.RequireHttpsMetadata = false;
                    options.ApiName = "vte-api";
                    options.TokenRetriever = request =>
                    {
                        var authorization = TokenRetrieval.FromAuthorizationHeader()(request);

                        if (string.IsNullOrEmpty(authorization))
                        {
                            authorization = TokenRetrieval.FromQueryString("token")(request);

                            if (!string.IsNullOrEmpty(authorization))
                            {
                                authorization = authorization.Replace("Bearer ", "");
                            }
                        }

                        return authorization;
                    };
                });

TokenRetriever 的默认值是TokenRetrieval.FromAuthorizationHeader()，当然如果你只需要通过query参数验证的话，可以直接赋值为TokenRetrieval.FromQueryString("token")

        /// <summary>
        /// Callback to retrieve token from incoming request
        /// </summary>
        public Func<HttpRequest, string> TokenRetriever { get; set; } = TokenRetrieval.FromAuthorizationHeader();

2.JwtBearer

如果是JWT验证的话，就没TokenRetrieval这个属性设置了，但是可以通过设置OnMessageReceived事件来达到目的

官方源代码如下

            jwtOptions.Events = new JwtBearerEvents
            {
                OnMessageReceived = e =>
                {
                    e.Token = InternalTokenRetriever(e.Request);
                    return JwtBearerEvents.MessageReceived(e);
                },

                OnTokenValidated = e => JwtBearerEvents.TokenValidated(e),
                OnAuthenticationFailed = e => JwtBearerEvents.AuthenticationFailed(e),
                OnChallenge = e => JwtBearerEvents.Challenge(e)
            };

所以可以这么定义一下事件

            services.AddAuthorization();
            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                .AddJwtBearer(options =>
                {
                    options.TokenValidationParameters = new Microsoft.IdentityModel.Tokens.TokenValidationParameters
                    {
                        ValidateLifetime = true,//是否验证失效时间
                        ValidateIssuerSigningKey = true,//是否验证SECURITYKEY
                        IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("ABCDEFG"))//SECURITYKEY
                    };

                    options.Events = new JwtBearerEvents
                    {
                        OnMessageReceived = context =>
                        {
                            context.Token = context.Request.Query["token"];
                            return Task.CompletedTask;
                        }
                    };
                });

以上我个人测试是没什么问题的，如果有其他问题，欢迎留言。