[英]java https login and browsing
I want to login to an https site on the internet with java and then read some information. 我想使用Java登录到Internet上的https站点,然后阅读一些信息。 I already looked with firebug to the headers, however I couldn't manage to make it ... 我已经用萤火虫查看了标头,但是我无法做到……
Firebug tells: 萤火虫告诉:
https://service.example.net/xxx/unternehmer/login.html?login=Anmelden&loginname=xxx&password=xxx&sessionid=&sprache=de
And then I want to browse to this site: 然后,我想浏览到该站点:
https://service.example.net/xxx/unternehmer/ausgabe.html?code=PORTAL;sessionid=03112010150442
how can I do this with java? 我该如何使用Java? I already tried something like: 我已经尝试过类似的东西:
import java.net.*;
import java.io.*;
import java.security.*;
import javax.net.ssl.*;
public class HTTPSClient {
public static void main(String[] args) {
int port = 443; // default https port
String host = "service.example.net";
try {
SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();
SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
// enable all the suites
String[] supported = socket.getSupportedCipherSuites();
socket.setEnabledCipherSuites(supported);
Writer out = new OutputStreamWriter(socket.getOutputStream());
// https requires the full URL in the GET line
out.write("POST https://" + host + "//xxx/unternehmer/login.html?login=Anmelden&loginname=xxx&password=xxx&sessionid=&sprache=de HTTP/1.1\r\n");
out.write("Host: " + host + "\r\n");
out.write("\r\n");
out.flush();
// read response
BufferedReader in = new BufferedReader(
new InputStreamReader(socket.getInputStream()));
// read the header
String s;
while (!(s = in.readLine()).equals("")) {
System.out.println(s);
}
System.out.println();
// read the length
String contentLength = in.readLine();
int length = Integer.MAX_VALUE;
try {
length = Integer.parseInt(contentLength.trim(), 16);
}
catch (NumberFormatException ex) {
// This server doesn't send the content-length
// in the first line of the response body
}
System.out.println(contentLength);
int c;
int i = 0;
while ((c = in.read()) != -1 && i++ < length) {
System.out.write(c);
}
System.out.println("1.part done");
out.close();
in.close();
socket.close();
}
catch (IOException ex) {
System.err.println(ex);
}
}
}
unfortunately that doesnt work for the login .... and i also dont know where to get this sessionid...everytime it is a different one. 不幸的是,这不适用于登录....,我也不知道从何处获取此sessionid ...每次都是不同的。 i hope you can help me. 我希望你能帮助我。 ps: i replaced some relevant information with xxx ps:我用xxx代替了一些相关信息
Problem solved :) 问题解决了 :)
First I added the libraries from apache: 首先,我从apache添加了库:
then I combined several tutorials. 然后我结合了一些教程。
my code: 我的代码:
import java.io.BufferedWriter;
import java.io.FileWriter;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.http.client.params.CookiePolicy;
public class Test {
public static final String TARGET_HTTPS_SERVER = "www.example.net";
public static final int TARGET_HTTPS_PORT = 443;
public static void main(String[] args) throws Exception {
HttpClient httpClient = new HttpClient();
httpClient.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY);
PostMethod post = new PostMethod("https://www.example.com/login.html");
post.setRequestHeader(new Header(
"User-Agent", "Mozilla/5.0 /Windows; U; Windows NT 4.1; de; rv:1.9.1.5) Gecko/20091102 Firefox/3.0"));
post.addParameter("login", "true");
post.addParameter("username", "xxx");
post.addParameter("password", "xxx");
post.addParameter("language", "de");
httpClient.executeMethod(post);
System.out.println(post.getResponseBodyAsString());
String body=post.getResponseBodyAsString();
//Get the session id by parsing the code, i know this is not pretty
String sessionid=body.substring(body.indexOf("session")+10,body.indexOf("session")+10+14);
System.out.print(sessionid);
GetMethod get=new GetMethod("https://www.example.com/thesiteyouwannabrowse?sessionid="+sessionid);
get.setRequestHeader(new Header(
"User-Agent", "Mozilla/5.0 /Windows; U; Windows NT 4.1; de; rv:1.9.1.5) Gecko/20091102 Firefox/3.0"));
httpClient.executeMethod(get);
System.out.println(get.getResponseBodyAsString());
//write it into a file
try{
// Create file
FileWriter fstream = new FileWriter("file.html");
BufferedWriter out = new BufferedWriter(fstream);
out.write(get.getResponseBodyAsString());
//Close the output stream
out.close();
}catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
post.releaseConnection();
}
}
I myself have done similar things. 我自己也做过类似的事情。 I got it working using this "manual" approach, but it was quite a hassle, especially with the cookie management. 我使用这种“手动”方法来工作,但这很麻烦,尤其是在cookie管理方面。
I would recommend you to have a look at Apache HttpClient library . 我建议您看看Apache HttpClient库 。 (I threw away the code I had when I realized how easy it was to use this library.) (当我意识到使用该库非常容易时,我扔掉了我拥有的代码。)
As org.life.java points out, here http://hc.apache.org/httpclient-3.x/sslguide.html is a good howto on how to get started with SSL using this library. 正如org.life.java所指出的,这里http://hc.apache.org/httpclient-3.x/sslguide.html是有关如何使用此库开始使用SSL的好方法。
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