主要思想是。我做一个httpget请求，采取moodle登录页面的形式。 （HTML代码） 然后我在html代码中找到形式参数并填充它们。 然后我发送httpPost请求到登录页面参数（电子邮件和通行证） 并最终尝试从需要首先登录的新网站获取HTML代码。 但我总是得到相同的代码。来自登录页面的那个。
我试过这个gmail，我认为它有效。至少在发布请求后我没有得到相同的代码。
如果有人可以帮助我，那将是很好的因为我有点匆忙。 在此先感谢：）
public class MyHttpClient {
private String cookies;
private HttpClient client = getNewHttpClient() ;
private final String USER_AGENT = "Chrome/39.0.2171.65";
@SuppressLint("NewApi")
/* this method is called from the
* mainactivity .
*courseUrl is the page i want to go after i login
*/
public String getHtmlFromElearn(String courseURL) throws Exception{
String url = "https://elearn.uoc.gr/login/index.php"; //the login page
CookieHandler.setDefault(new CookieManager());
MyHttpClient http = new MyHttpClient();
String page = http.GetPageContent(url); //gets the html code of login page
List<NameValuePair> postParams =
http.getFormParams(page, "mymail@csd.uoc.gr","mypass"); //pasing the email and pass params to post request
http.sendPost(url, postParams); // sends the post request with the params found in form
String result = http.GetPageContent(courseURL);
System.out.println("Done");
return result;
}
/*
* sends post request with params to login to the website
*/
private void sendPost(String url, List<NameValuePair> postParams)
throws Exception {
//was getting exception for main thred without this
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
HttpPost post = new HttpPost(url);
// add header details
post.setHeader("Host", "elearn.uoc.gr");
post.setHeader("User-Agent", USER_AGENT);
post.setHeader("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
post.setHeader("Accept-Language", "el-GR,el;q=0.8");
post.setHeader("Cookie", getCookies());
post.setHeader("Connection", "keep-alive");
post.setHeader("Referer", "https://elearn.uoc.gr/login/index.php");
post.setHeader("Content-Type", "application/x-www-form-urlencoded");
post.setEntity(new UrlEncodedFormEntity(postParams,HTTP.UTF_8));
HttpResponse response = client.execute(post);
// THE RESPONSE I AM GETTING IS 200
int responseCode = response.getStatusLine().getStatusCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + postParams);
System.out.println("Response Code : " + responseCode);
//copy the response page in to a string
BufferedReader rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line).append("\n");
}
if(result.toString().contains("login failed")){ // checks if login succeeded
System.out.println("login faild");
}
System.out.println(result.toString());
}
@SuppressLint("NewApi")
/*
* gets the html code from the url given
*/
private String GetPageContent(String url) throws Exception {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
//httpget request to get the html of page
HttpGet request = new HttpGet(url);
request.setHeader("User-Agent", USER_AGENT);
request.setHeader("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
request.setHeader("Accept-Language", "el-GR,el;q=0.8");
HttpResponse response = client.execute(request);
int responseCode = response.getStatusLine().getStatusCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
//copies response html code to string
BufferedReader rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
String result = new String();
String line = "";
while ((line = rd.readLine()) != null) {
result+=line+"\n";
}
// set cookies
setCookies(response.getFirstHeader("Set-Cookie") == null ? "" :
response.getFirstHeader("Set-Cookie").toString());
return result;
}
/*gets the email and pass and returns a lists withh all the paramas
* for post request to login
*/
public List<NameValuePair> getFormParams(
String html, String username, String password)
throws UnsupportedEncodingException {
System.out.println("Extracting form's data...");
Document doc = Jsoup.parse(html);
Element loginform = doc.getElementById("login");
Elements inputElements = loginform.getElementsByTag("input");
List<NameValuePair> paramList = new ArrayList<NameValuePair>();
for (Element inputElement : inputElements) {
String key = inputElement.attr("name");
String value = inputElement.attr("value");
if (key.equals("username")){
value = username;
}
else if (key.equals("password")){
value = password;
}
paramList.add(new BasicNameValuePair(key, URLEncoder.encode(value, "UTF-8")));
}
return paramList;
}
public String getCookies() {
return cookies;
}
public void setCookies(String cookies) {
this.cookies = cookies;
}
/*
*return an http client that trusts all cerfificates
*/
public HttpClient getNewHttpClient() {
try {
KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
trustStore.load(null, null);
SSLSocketFactory sf = new MySSLSocketFactory(trustStore);
sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
HttpParams params = new BasicHttpParams();
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);
SchemeRegistry registry = new SchemeRegistry();
registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
registry.register(new Scheme("https", sf, 443));
ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);
return new DefaultHttpClient(ccm, params);
} catch (Exception e) {
return new DefaultHttpClient();
}
}
}
答案 0 :(得分：3)
我使用了Jsoup.connect并成功登录到任何网站
Response res = Jsoup
.connect("loginPage.com/login.php")
.data("username", "myUserName", "password", "myPass")
.method(Method.POST)
.execute();
//This will get you cookies
Map<String, String> loginCookies = res.cookies();
然后，如果我想访问任何其他网页，我使用登录页面返回给我的cookie。
Document doc = Jsoup.connect("urlYouNeedToBeLoggedInToAccess")
.cookies(loginCookies)
.get()