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检索cookie并在随后的post请求中发送它

cookies http java

Giorgos Myrianthous · 技术社区 · 6 年前

我想从一个网站上读取两个数字(随机生成),然后用这个数字计算结果,然后用一个帖子请求提交结果。为此,我还需要提交该会话的cookie,以便系统知道在该特定会话中生成的随机数。

为了读出我使用的数字 Jsoup :

Document document = Jsoup.parse(Jsoup.connect("http://website.com/getNumbers").get().select("strong").text());
String[] numbers = document.text().split(" ");
String answer = methodThatComputesTheDesiredOutput(numbers);

现在我要发送一个包含 answer 和 cookies 那次会议。这是一个部分实现的post请求,只包含一个参数( 回答 ):

HttpClient httpClient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost("http://website.com/submitAnswer");
List<NameValuePair> params = new ArrayList<NameValuePair>(1);
params.add(new BasicNameValuePair("answer", answer);
httpPost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));

如何在读取文档时获取cookie,然后将其用作post请求的参数?

2 回复 | 直到 6 年前

Ranjith 6 年前

使用jsoup按以下方式提取cookie:

    Response response = Jsoup.connect("http://website.com/getNumbers").execute();
    Map<String, String> cookies = response.cookies();
    Document document = Jsoup.parse(response.body());

使用使用JSoup提取的cookie创建basicCokieStore。创建一个包含cookie存储的httpcontext,并在执行下一个请求时传递它。

    BasicCookieStore cookieStore = new BasicCookieStore();
    for (Entry<String, String> cookieEntry : cookies.entrySet()) {
        BasicClientCookie cookie = new BasicClientCookie(cookieEntry.getKey(), cookieEntry.getValue());
        cookie.setDomain(".example.com");
        cookie.setPath("/");
        cookieStore.addCookie(cookie);
    }


    HttpContext localContext = new BasicHttpContext();
    localContext.setAttribute(HttpClientContext.COOKIE_STORE, cookieStore);

    HttpPost httpPost = new HttpPost("http://website.com/submitAnswer");
    List<NameValuePair> params = new ArrayList<NameValuePair>(1);
    params.add(new BasicNameValuePair("answer", answer);
    httpPost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));

    httpClient.execute(httpPost, localContext);

codewizard 6 年前

发送您的第一个请求,如下所示:

Response res = Jsoup.connect("login Site URL")
        .method(Method.GET)
        .execute();

现在,获取cookie并用cookie发送新的请求,如下所示:

 CookieStore cookieStore = new BasicCookieStore();
     for (String key : cookies.keySet()) {
        Cookie cookie = new Cookie(key, cookies.get(key));
        cookieStore.addCookie((org.apache.http.cookie.Cookie) cookie);
    }
       HttpClientContext context = HttpClientContext.create();
        context.setCookieStore(cookieStore);
        HttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost("http://website.com/submitAnswer");
        httpClient.execute(httpPost,context);