![]() HttpClient.įile uploads can be done in two ways: PostMethod and HttpPost. Let's do a small Demo for the example of uploading and downloading files initiated by the local client. But what if we need to access the server's resources without a browser? So what to do? None of these situations are a problem with the browsers we currently use. ![]() Some of these pages are just plain old pages, some require users to log in before they can use them, or require authentication, and some are transmitted encrypted, such as HTTPS. In most cases, we use Chrome or other browsers to access an WEB server, which can be used to browse the page, view information or submit some data, upload or download files, etc. ![]() HttpClient is designed to provide an efficient, up-to-date, and feature-rich client programming toolkit that supports the HTTP protocol, and it supports the latest versions and recommendations of the HTTP protocol. While basic access to the HTTP protocol is already provided in the package of JDK, the JDK library itself is not rich and flexible enough for most applications. The HTTP protocol is probably the most used and important protocol on Internet today, and more and more Java applications need to access network resources directly through the HTTP protocol.
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