HttpHandlerlink
Transforms an HttpRequest into a stream of HttpEvents, one of which will likely be a HttpResponse.
把一个 HttpRequest 转换成 HttpEvent 组成的流,HttpResponse 就是其中之一。
说明
HttpHandler is injectable. When injected, the handler instance dispatches requests to the first interceptor in the chain, which dispatches to the second, etc, eventually reaching the HttpBackend.
HttpHandler 是可注入的。当被注入时,该处理器的实例会把请求派发给拦截器链中的第一个拦截器,第一个拦截器会再派发给第二个拦截器,以此类推。 最终抵达 HttpBackend。
In an HttpInterceptor, the HttpHandler parameter is the next interceptor in the chain.
在 HttpInterceptor 中,HttpHandler 参数就表示链中的下一个拦截器。
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