public WeixinWelcomePageMiddleware(
RequestDelegate next,
IOptions <WeixinWelcomePageOptions> options,
ILoggerFactory loggerFactory,
IWeixinMessageEncryptor encryptor)
{
_next = next ?? throw new ArgumentNullException(nameof(next));
_logger = loggerFactory?.CreateLogger <WeixinWelcomePageMiddleware>() ?? throw new ArgumentNullException(nameof(loggerFactory));
_options = options?.Value ?? throw new ArgumentNullException(nameof(options));
_encryptor = encryptor ?? throw new ArgumentNullException(nameof(encryptor));
//入参检查
if (string.IsNullOrEmpty(_options.WebsiteToken))
{
throw new ArgumentException($"参数 {nameof(_options.WebsiteToken)} 不能为空。");
}
if (string.IsNullOrEmpty(_options.Path))
{
throw new ArgumentException($"参数 {nameof(_options.Path)} 不能为空。");
}
_backchannel = new HttpClient(new HttpClientHandler());
_backchannel.DefaultRequestHeaders.UserAgent.ParseAdd("AspNetCoreWeixin");
_backchannel.Timeout = TimeSpan.FromSeconds(60);
_backchannel.MaxResponseContentBufferSize = 1024 * 1024 * 10; // 10 MB
}
internal async Task <bool> InitializeAsync(
WeixinWelcomePageOptions options,
HttpContext context,
ILogger logger,
IWeixinMessageEncryptor encryptor)
{
_options = options ?? throw new ArgumentNullException(nameof(options));
HttpContext = context ?? throw new ArgumentNullException(nameof(context));
_logger = logger ?? throw new ArgumentNullException(nameof(logger));
_encryptor = encryptor ?? throw new ArgumentNullException(nameof(encryptor));
context.Response.OnStarting(OnStartingCallback, this);
{
InitializeResult = await HandleOnceAsync();
if (InitializeResult?.Handled == true)
{
return(true);
}
if (InitializeResult?.Failure != null)
{
_logger.LogWarning(0, InitializeResult.Failure, InitializeResult.Failure.Message);
}
}
return(false);
}