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我正在使用 java web 应用程序中的 apache http 客户端 (v4),并且遇到以下情况,我需要简单的使用示例——

(1) 如何在 Apache HTTP 客户端中使用 Cookie,不同的选项可用于使用 cookie

(2) 当响应在 HTTPResponse 对象中可用时,提取字符集、mimetype、响应头(作为 KeyValuePair)和伙伴(作为 byte[])。

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1)对于 cookie,请参阅该示例:

httpcomponents-client-4.1.3\examples\org\apache\http\examples\client\ClientCustomContext.java

主要代码:

HttpClient httpclient = new DefaultHttpClient();
        try {
            // Create a local instance of cookie store
            CookieStore cookieStore = new BasicCookieStore();

            // Create local HTTP context
            HttpContext localContext = new BasicHttpContext();
            // Bind custom cookie store to the local context
            localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

            HttpGet httpget = new HttpGet("http://www.google.com/");

            System.out.println("executing request " + httpget.getURI());

            // Pass local context as a parameter
            HttpResponse response = httpclient.execute(httpget, localContext);
        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }

2)您可以从响应中获得所需的一切,并且:

HttpEntity entity = response.getEntity();
entity.getContent()

只需阅读从其网站下载的 httpcomponents-client-4.1.3-bin.zip 的 httpcomponents-client-4.1.3\examples\org\apache\http\examples\client 中的示例。

于 2012-03-02T02:15:52.407 回答