Question

我正在尝试使用HttpClient登录后浏览网站。

我首先定义一个HttpClient实例以及一个cookie存储：

public HttpClient httpclient = new DefaultHttpClient();
public CookieStore cookieStore = new BasicCookieStore();
public HttpContext localContext = new BasicHttpContext();
localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

在一个（android）BackgroundTask中，我成功登录网站。

HttpPost httppost = new HttpPost("http://www.deeproute.com/deeproute/default.asp");
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("cookieexists","false"));
nameValuePairs.add(new BasicNameValuePair("name", mUser));
nameValuePairs.add(new BasicNameValuePair("password", mPassword));
nameValuePairs.add(new BasicNameValuePair("subbera", "Login"));

httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
res = httpclient.execute(httppost, localContext);

在此之后，在另一个BackgroundTask中，我尝试连接到同一网站上的不同页面：

HttpGet rosterGet = new HttpGet("http://deeproute.com/deeproute/?sel=rosterlook&myleagueno=6&myteamno=12");
res = httpclient.execute(rosterGet, localContext);

然而，当我连接到此页面时，我不再登录了。我查看并且在成功登录后仍然存在cookie，所以我不知所措。

编辑：对于记录，此网站通常在普通浏览器中正常运行。

编辑2：为了回应下面Aaron的回答，似乎Cookie正在保存，因为如果在第一次请求之后，我会这样做：

List<Cookie> cookies = cookieStore.getCookies();
    int cookieSize = cookies.size();

    for (int i = 0; i < cookieSize; i++) {
        Log.v(TAG, "Cookie " + i + "name: "
                                + cookies.get(i).getName());
        Log.v(TAG, "Cookie " + i + "value: "
                                + cookies.get(i).getValue());
    }

我找回了四个cookie，包括一个存储了我的用户名的cookie。如果我在第二次请求后做了同样的事情，我实际上会找回6个cookie，因为它显然给了我一个新的会话ID。这似乎是问题的根源，但我不确定如何解决它。

第一次请求后，这是我的会话ID cookie：

name: ASPSESSIONIDSCSCSBCS
value: GBAJALJBOGKBFLAELPNKEDOE

在第二次请求之后，我有两个会话ID cookie：

name: ASPSESSIONIDSCSCSBCS
value: GBAJALJBOGKBFLAELPNKEDOE

name: ASPSESSIONIDSCSCSBCS
value: MBAJALJBDBOKPEHNCDDFOCBC

Answer 1

我遇到了同样的问题。我实现了cookie，但仍然没有登录。我终于让它工作了，所以我发布了这段代码，希望能帮助其他人解决同样的问题。

以下是Apache关于如何登录和检索所有Cookie的示例：https://hc.apache.org/httpcomponents-client-ga/httpclient/examples/org/apache/http/examples/client/ClientFormLogin.java

您还可以查看Apache的HttpClient文档，了解＆＃34; HTTP状态管理＆＃34;在这里：https://hc.apache.org/httpcomponents-client-ga/tutorial/html/statemgmt.html

以下是我的登录功能的实现方式：

使用CredentialsProvider

代理

使用BasicCookieStore

Cookie

使用CloseableHttpClient

构建自定义HttpClient

设置 POST请求：目标，主机，参数，路径
执行 POST请求/login.html登录。
向/user执行GET请求以查看我们是否正确登录

打印回复状态代码

//////// SETUP
//Setup Proxy (If needed)
    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(
            new AuthScope("proxy.mycompany", 8080),
            new UsernamePasswordCredentials("my_username", "my_password"));
//Setup Cookies
    BasicCookieStore cookieStore = new BasicCookieStore();

//Build HttpClient
    CloseableHttpClient httpclient = HttpClients.custom()
            .setDefaultCredentialsProvider(credsProvider)
            .setDefaultCookieStore(cookieStore)
            .build();
    HttpHost target = new HttpHost("www.mycompany.com", 80, "http");
    HttpHost proxy = new HttpHost("proxy.mycompany", 8080);
    RequestConfig config = RequestConfig.custom()
            .setProxy(proxy)
            .build();
try {
//////// LOGIN REQUEST, POST TO /login.html
//Start POST Request
    HttpPost httppost = new HttpPost('/login.html');
//Add parameters to POST Request
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();   
    nameValuePairs.add(new BasicNameValuePair('username','my_username'));  
    nameValuePairs.add(new BasicNameValuePair('password','my_password'));
    httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
//Set Config for POST Request
    httppost.setConfig(config);
//Execute POST Request
    httpresponse = httpclient.execute(target, httppost);
//Print Response Code
    try {
       System.out.println("Status Code: "+httpresponse.getStatusLine().getStatusCode());
    } finally {
//Close HTTP Reponse (must be in a 'finally' block)
        httpresponse.close();
    }

//////// CHECK LOGIN STATUS, GET TO /user
//Start GET Request
    HttpGet httpget = new HttpGet('/user');
//Set Config for GET Request
    httpget.setConfig(config);
//Execute GET Request
    httpresponse = httpclient.execute(target, httpget);
//Print Response Code
    try {
       System.out.println("Status Code: "+httpresponse.getStatusLine().getStatusCode());
    } finally {
//Close HTTP Reponse (must be in a 'finally' block)
        httpresponse.close();
    }
} finally {
    httpclient.close();
}

Answer 2

看起来不像初始请求中保存的Cookie，因此下一个请求中没有任何内容可以告诉您登录的网站。你需要一个cookie容器。谷歌吧。

HttpClient不会保持登录状态

2 个答案: