Android - 会话 Cookie

Question

我需要使用提供会话 Cookie 的网站来验证用户名和密码。

我从表单上的 EditText 收集用户名和密码，并将其传递到身份验证会话。

    @Override
    public void onClick(View v) 
    {
        String Username =  username.getText().toString();
        String Password = password.getText().toString();
        String value = LoginAuthenticate.getSessionCookie(Username, Password);
        //This is just check what session value is brought back
        username.setText(value);

    }

然后检查用户名和密码是否正确以返回会话 cookie。

公共静态 String getSessionCookie（字符串用户名，字符串密码） {

    String login_url = "http://www.myexperiment.org/session/create";
    URLConnection connection = null;
    String sessionXML = "<session><username>" + username +
            "</username><passsword>" + password +
            "</password></session>";
    String cookieValue = null;
    try 
    {

        URL url = new URL(login_url);
        connection = url.openConnection();

        connection.setRequestProperty("Content-Type", "application/xml");

        connection.setDoOutput(true);

        OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());
        out.write(sessionXML);

        out.close();
    } 
    catch (Exception e) 
    {
        e.printStackTrace();
        return null;
    } 
    String headerName = null;
    for (int i =0; (headerName = connection.getHeaderFieldKey(i)) != null; i++)
    {
        if(headerName.equals("Set-Cookie"))
        {
            cookieValue = connection.getHeaderField(i);
        }
    }

    //return connection.getHeaderField("Set-Cookie:");
    return cookieValue;
}

在清单文件中我设置了权限。

没有错误，但最后返回 NULL。我已经检查（在调试中）在函数中传递的用户名和密码是否正确。

我希望有人可以在这里提供帮助。

谢谢。

Answer 1

查看此链接：如何制作在Android上使用cookie的http请求？

我认为这是设置和获取cookie的首选方式，而不是像你那样循环遍历标头（检查函数的末尾）：

import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;

/**
 * A example that demonstrates how HttpClient APIs can be used to perform
 * form-based logon.
 */
public class ClientFormLogin {

    public static void main(String[] args) throws Exception {

        DefaultHttpClient httpclient = new DefaultHttpClient();

        HttpGet httpget = new HttpGet("https://portal.sun.com/portal/dt");

        HttpResponse response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }
        System.out.println("Initial set of cookies:");
        List<Cookie> cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        HttpPost httpost = new HttpPost("https://portal.sun.com/amserver/UI/Login?" +
                "org=self_registered_users&" +
                "goto=/portal/dt&" +
                "gotoOnFail=/portal/dt?error=true");

        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("IDToken1", "username"));
        nvps.add(new BasicNameValuePair("IDToken2", "password"));

        httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

        response = httpclient.execute(httpost);
        entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }

        System.out.println("Post logon cookies:");
        cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        // When HttpClient instance is no longer needed, 
        // shut down the connection manager to ensure
        // immediate deallocation of all system resources
        httpclient.getConnectionManager().shutdown();        
    }
}

Answer 2

对于任何有兴趣的人；这是工作代码。它展示了它的方法。

try
{
    URL url = new URL(login_url);
    connection = (HttpURLConnection) url.openConnection();  

    connection.setDoOutput(true);
    connection.setRequestMethod("POST");
    connection.setRequestProperty("Content-Type", "application/xml");

    OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream());
    out.write(sessionXML);
    out.flush();
    out.close();

    String headerName = "";

    for (int i = 1; (headerName = connection.getHeaderFieldKey(i)) != null; i++)
    {       
        if(headerName.equals("Set-Cookie"))
        {
            cookieValue = connection.getHeaderField(i);         
        }
    }
} 
catch (Exception e)
{
    e.printStackTrace();
}
finally
{
    if(connection != null)
        connection.disconnect();
}