HttpClient获取Cookie的两种方式

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一、旧版本的HttpClient获取Cookies
p.s. 该方式官方已不推荐使用
使用DefaultHttpClient类实例化httpClient对象：

public static String dooPost_deprecated(String url, Map<String, String> map, String charset) {        DefaultHttpClient httpClient = null;        HttpPost httpPost = null;        String result = null;        try {            httpClient = new DefaultHttpClient();            httpPost = new HttpPost(url);            // 设置参数            List<NameValuePair> list = new ArrayList<NameValuePair>();            Iterator<Entry<String, String>> iterator = map.entrySet().iterator();            while (iterator.hasNext()) {                Entry<String, String> elem = (Entry<String, String>) iterator.next();                list.add(new BasicNameValuePair(elem.getKey(), elem.getValue()));            }            if (list.size() > 0) {                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, charset);                httpPost.setEntity(entity);            }            HttpResponse response = httpClient.execute(httpPost);            System.out.println(response.getStatusLine().getStatusCode());            String JSESSIONID = null;            String cookie_user = null;            //获得Cookies            CookieStore cookieStore = httpClient.getCookieStore();            List<Cookie> cookies = cookieStore.getCookies();            for (int i = 0; i < cookies.size(); i++) {                //遍历Cookies                System.out.println(cookies.get(i));                System.out.println("cookiename=="+cookies.get(i).getName());                System.out.println("cookieValue=="+cookies.get(i).getValue());                System.out.println("Domain=="+cookies.get(i).getDomain());                System.out.println("Path=="+cookies.get(i).getPath());                System.out.println("Version=="+cookies.get(i).getVersion());                if (cookies.get(i).getName().equals("JSESSIONID")) {                    JSESSIONID = cookies.get(i).getValue();                }                if (cookies.get(i).getName().equals("cookie_user")) {                    cookie_user = cookies.get(i).getValue();                }            }            if (cookie_user != null) {                result = JSESSIONID;            }        } catch (Exception ex) {            ex.printStackTrace();        }        return result;    }

二、新版本的HttpClient获取Cookies
使用CloseableHttpClient类实例化httpClient对象：

    public static String doPost(Map<String, String> map, String charset) {        CloseableHttpClient httpClient = null;        HttpPost httpPost = null;        String result = null;        try {            CookieStore cookieStore = new BasicCookieStore();            httpClient = HttpClients.custom().setDefaultCookieStore(cookieStore).build();            httpPost = new HttpPost("http://localhost:8080/testtoolmanagement/LoginServlet");            List<NameValuePair> list = new ArrayList<NameValuePair>();            Iterator<Map.Entry<String, String>> iterator = map.entrySet().iterator();            while (iterator.hasNext()) {                Entry<String, String> elem = (Entry<String, String>) iterator.next();                list.add(new BasicNameValuePair(elem.getKey(), elem.getValue()));            }            if (list.size() > 0) {                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list, charset);                httpPost.setEntity(entity);            }            httpClient.execute(httpPost);            String JSESSIONID = null;            String cookie_user = null;            List<Cookie> cookies = cookieStore.getCookies();            for (int i = 0; i < cookies.size(); i++) {                if (cookies.get(i).getName().equals("JSESSIONID")) {                    JSESSIONID = cookies.get(i).getValue();                }                if (cookies.get(i).getName().equals("cookie_user")) {                    cookie_user = cookies.get(i).getValue();                }            }            if (cookie_user != null) {                result = JSESSIONID;            }        } catch (Exception ex) {            ex.printStackTrace();        }        return result;    }

HttpClient及其jar包下载地址：官网链接

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