我正在尝试使用https请求登录网站，然后捕获会话ID。我需要此会话ID才能删除Web应用程序中的一些标记。
直到现在我能够登录该应用程序。登录后，应用程序将我引导至主页。这是我尝试使用https获取请求到主页从cookie捕获会话ID的地方。但不幸的是，cookie不包含会话ID。
当我在登录后向主页发送get请求时，我得到一个cookie： 标题字段为：{null = [HTTP / 1.1 200 OK]，Server = [Microsoft-IIS / 7.0]，Pragma = [no-cache]，Date = [Wed，2015年12月23日04:37:13 GMT]，Serv = [1]，Cache-Control = [no-cache，no-store]，SI = [1]，X-AspNet-Version = [4.0.30319]，Set-Cookie = []，Expires = [ - 1] ，Content-Length = [255882]，X-Powered-By = [ASP.NET]，Content-Type = [text / html;字符集= UTF-8]}
此处Set-Cookie字段为空。
我写了以下几行代码。
package com.iso.mozart.test.ui;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.CookieHandler;
import java.net.CookieManager;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;
import javax.net.ssl.HttpsURLConnection;
import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class HttpUrlConnectionExample {
private List<String> cookies;
private HttpsURLConnection conn;
private final String USER_AGENT = "Mozilla/5.0";
public static void main(String[] args) throws Exception {
String url = "https://www.testpurpose.com/Login.aspx";
String homepage = "https://www.testpurpose.com/Home.aspx";
HttpUrlConnectionExample http = new HttpUrlConnectionExample();
// make sure cookies is turn on
CookieHandler.setDefault(new CookieManager());
// 1. Send a "GET" request, so that you can extract the form's data.
String page = http.GetPageContent(url);
String postParams = http.getFormParams(page, "username here", "password here");
// 2. Construct above post's content and then send a POST request for
// authentication
http.sendPost(url, postParams);
// 3. success then go to homepage.
String result = http.GetPageContent(homepage);
System.out.println(result);
}
private void sendPost(String url, String postParams) throws Exception {
URL obj = new URL(url);
conn = (HttpsURLConnection) obj.openConnection();
// Acts like a browser
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Host", "www.testpurpose.com");
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
for (String cookie : this.cookies) {
conn.addRequestProperty("Cookie", cookie.split(";", 1)[0]);
}
conn.setRequestProperty("Connection", "keep-alive");
conn.setRequestProperty("Referer", url);
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Content-Length", Integer.toString(postParams.length()));
conn.setDoOutput(true);
conn.setDoInput(true);
// Send post request
DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
wr.writeBytes(postParams);
wr.flush();
wr.close();
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + postParams);
System.out.println("Response Code : " + responseCode);
// System.out.println("HEADERS:"+conn.getRequestMethod());
BufferedReader in =
new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// System.out.println(response.toString());
}
private String GetPageContent(String url) throws Exception {
URL obj = new URL(url);
conn = (HttpsURLConnection) obj.openConnection();
// default is GET
conn.setRequestMethod("GET");
conn.setUseCaches(false);
// act like a browser
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setRequestProperty("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
conn.getRequestProperties();
conn.setDoOutput(true);
// System.out.println("Huhahahahah :"+conn.getHeaderFields());
if (cookies != null) {
for (String cookie : this.cookies) {
conn.addRequestProperty("Cookie", cookie.split(";", 1)[0]);
}
}
int responseCode = conn.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("headers fields are :"+conn.getHeaderFields());
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
// Get the response cookies
setCookies(conn.getHeaderFields().get("Set-Cookie")); //This is where I have tried to capture the session id from cookie but could it doesnot contain session id.
return response.toString();
}
public String getFormParams(String html, String username, String password)
throws UnsupportedEncodingException {
System.out.println("Extracting form's data...");
Document doc = Jsoup.parse(html);
// Google form id
Element loginform = doc.getElementById("form1");
Elements inputElements = loginform.getElementsByTag("input");
List<String> paramList = new ArrayList<String>();
for (Element inputElement : inputElements) {
String key = inputElement.attr("name");
String value = inputElement.attr("value");
if (key.equals("txtUserID"))
value = username;
else if (key.equals("txtPassword"))
value = password;
paramList.add(key + "=" + URLEncoder.encode(value, "UTF-8"));
}
// build parameters list
StringBuilder result = new StringBuilder();
for (String param : paramList) {
if (result.length() == 0) {
result.append(param);
} else {
result.append("&" + param);
}
}
return result.toString();
}
public List<String> getCookies() {
return cookies;
}
public void setCookies(List<String> cookies) {
this.cookies = cookies;
}
}
答案 0 :(得分：0)
CookieHandler.setDefault(new CookieManager());
使用此行更改代码中的上一行。
CookieHandler.setDefault(new CookieManager(null, CookiePolicy.ACCEPT_ALL));
请告诉我这是否适合您。
答案 1 :(得分：0)
MAX(report_date)使用这一小块代码。