這部分可以使用Wireshark工具來抓包就可以了，發現需要以下數據:

"_xsrf" = xxxx(這是一個變動的數據，需要先活取獲取知乎首頁源碼來獲得)"email" = 郵箱"passWord" = 密碼"rememberme" = "y"(或者n也可以)

• 獲取_xsrf數據:

  String xsrfValue = responseHtml.split("<input type=/"hidden/" name=/"_xsrf/" value=/"")[1].split("/"/>")[0];

  responseHtml是首頁的源碼，根據網頁的組織形式，把_xsrf數據分割出來。

RequestConfig requestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD_STRICT).build();        CloseableHttpClient httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).build();        HttpGet get = new HttpGet("http://www.zhihu.com/");        try {            CloseableHttPResponse response = httpClient.execute(get);            String responseHtml = EntityUtils.toString(response.getEntity());            String xsrfValue = responseHtml.split("<input type=/"hidden/" name=/"_xsrf/" value=/"")[1].split("/"/>")[0];            System.out.println("xsrfValue:" + xsrfValue);            response.close();            List<NameValuePair> valuePairs = new LinkedList<NameValuePair>();            valuePairs.add(new BasicNameValuePair("_xsrf" , xsrfValue));            valuePairs.add(new BasicNameValuePair("email", 郵箱));            valuePairs.add(new BasicNameValuePair("password", 密碼));            valuePairs.add(new BasicNameValuePair("rememberme", "y"));            UrlEncodedFormEntity entity = new UrlEncodedFormEntity(valuePairs, Consts.UTF_8);            HttpPost post = new HttpPost("http://www.zhihu.com/login");            post.setEntity(entity);            httpClient.execute(post);//登錄            HttpGet g = new HttpGet("http://www.zhihu.com/question/following");            CloseableHttpResponse r = httpClient.execute(g);//獲取子集關注的問題頁面測試一下是否登陸成功            System.out.println(EntityUtils.toString(r.getEntity()));            r.close();        } catch (IOException e) {            e.printStackTrace();        } finally {            try {                httpClient.close();            } catch (IOException e) {                e.printStackTrace();            }        }

此處要注意開頭的RequestConfig，我一開始是沒有設置cookie這方面的額內容的，結果一直提示有cookie錯誤，所以查看了HttpClient手冊，上面提到了選擇Cookie策略,通過這種方法設置一個全局的Cookie策略，

RequestConfig requestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.STANDARD_STRICT).build();//標準Cookie策略CloseableHttpClient httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).build();//設置進去