转载：http://blog.csdn.net/zhangbinu/article/details/72777620

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
    
      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
     
       list = new ArrayList
      
       (); Iterator
       
        
         > iterator = map.entrySet().iterator(); while (iterator.hasNext()) { Entry
         
           elem = (Entry
          
           ) 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
           
             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
    
      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
     
       list = new ArrayList
      
       (); Iterator
       
        
         > iterator = map.entrySet().iterator(); while (iterator.hasNext()) { Entry
         
           elem = (Entry
          
           ) 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
           
             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：