Examples of using Httpclient in English and their translations into Chinese
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Programming
We start by declaring an object of the HTTPClient class.
Please note that HttpClient will use this flag as a hint only.
In 2005, the HttpComponents project at Jakarta was created,with the task of developing a successor to HttpClient 3.
HttpClient's purpose is to transmit and receive HTTP messages.
Apart from creating the HttpClient, nothing HTTP/2-specific can be observed.
HttpClient will automatically retry those methods that are assumed to be idempotent.
By leveraging the ServicePointManager, you can tell HttpClient to automatically recycle connections.
So HttpClient must be able to skip those surplus lines this way.
Execution of an HTTP method involves one or several HTTP request/ HTTP response exchanges,usually handled internally by HttpClient.
Disposing the HttpClient, the underlying socket is not immediately released.
But it turns out there is a serious issue:DNS changes are NOT honoured and HttpClient(through HttpClientHandler) hogs the connections until socket is closed.
Theoretically the HttpClient could honor the DNS TTL(Time to Live) value, which defaults to one hour.
The Commons project, cradle of HttpClient, left Jakarta in 2007 to become an independent Top Level Project.
Otherwise, HttpClient will end up creating a new HTTP connection for each HTTP request against NTLM protected resources.
However, if you try to apply this pattern to HttpClient, another IDisposable class, you trip over some rather unexpected problems.
The HttpClient library is quite simple to use and allows a POST operation to be programmatically constructed before execution.
Quite naturally, the main entry point of the HttpClient API is the HttpClient interface that defines the contract described above.
HttpClient will make no attempt to recover from any logical or HTTP protocol errors(those derived from HttpException class).
The Commons, cradle of HttpClient, left Jakarta in 2007 to become an independent Top Level Project.
HttpClient was started in 2001 as a subproject of the Jakarta Commons, based on code developed by the Jakarta Slide project.
Though not mentioned anywhere in the HttpClient documentation, there is a pattern described in the Microsoft Patterns& Practices GitHub site.
HttpClient handles all types of redirects automatically, except those explicitly prohibited by the HTTP specification as requiring user intervention.
To mitigate the limitation, HttpClient includes a number of bean classes that can used in order to initialize HttpParams objects using standard Java bean conventions.
HttpClient also comes with the EntityUtils class, which exposes several static methods to more easily read the content or information from an entity.
HttpClient assumes non-entity enclosing methods such as GET and HEAD to be idempotent and entity enclosing methods such as POST and PUT to be not.
HttpClient creates two instances of AuthState in the course of HTTP request execution: one for target host authentication and another one for proxy authentication.
HttpClient employs a special entity to manage access to HTTP connections called HTTP connection manager and represented by the ClientConnectionManager interface.