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From: "Steve Cole" <scole@camsbycbs.com>
To: "'Commons Users List'" <user@commons.apache.org>
References: <1270057064420-1747091.post@n4.nabble.com>
In-Reply-To: <1270057064420-1747091.post@n4.nabble.com>
Subject: RE: how to implement login using httpclient?
Date: Wed, 31 Mar 2010 14:00:19 -0400
Message-ID: <4AB481618BDC48769908C6656509F7CD@cbs>
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Here's some snippet code how we implemented HttpClient using the
MultiThreadedHttpConnectionManager...

import java.io.*;
import java.util.*;
import java.text.*;
import java.security.Security;

import org.apache.commons.httpclient.*;
import org.apache.commons.httpclient.auth.*;
import org.apache.commons.httpclient.cookie.*;
import org.apache.commons.httpclient.methods.*;
import org.apache.commons.httpclient.params.*;
import org.apache.commons.httpclient.protocol.*;

public class MyHttpclientExample{
  public String protocol              = "http";
  public String host                  = "localhost";
  public int port                     = 80;
                                      
  public String httpAuthRealm         = null;
  public String httpAuthUsername      = null;
  public String httpAuthPassword      = null;

  public String trustStore            = null;
  public String trustStoreType        = "jks";
  public String trustStorePassword    = null;
  public String trustStoreProvider    = "SUN";
  public String trustStoreAlgorithm   = "SunX509";

  public String keyStore              = null;
  public String keyStoreType          = "jks";
  public String keyStorePassword      = null;
  public String keyStoreProvider      = "SUN";
  public String keyStoreAlgorithm     = "SunX509";

  public String path                  = null;

  public ByteArrayOutputStream responseAsStream = null;
  public String saveAsFilename        = null;

  private Hashtable parameters        = null;
  private Hashtable cookies           = null;

  public HttpClient httpClient = null;
  Protocol myProtocol            = null;
  AuthSSLProtocolSocketFactory authSSLProtocolSocketFactory = null;
  Cookie cookie                  = null;
  NameValuePair[] nameValuePairs = null;

  String s1 = null;
  String s2 = null;
  String s3 = null;
  int i1 = 0;
  int i2 = 0;
  int i3 = 0;

//////////////////
  String url                    = null;

/*
  HTTPConnection httpConnection = null;
  HTTPResponse resp             = null;
*/

  BufferedReader reader         = null;
  StringBuffer returnData       = null;


  public void resetParameters()throws Throwable{
    parameters = null;
  }
  public void addParameter(String name, String value)throws Throwable{
    if (parameters == null){
      parameters = new Hashtable();
    }
    parameters.put(name,value);
  }

  public void resetCookies()throws Throwable{
    cookies = null;
  }
  public void addCookie(String name, String value)throws Throwable{
    if (cookies == null){
      cookies = new Hashtable();
    }
    cookies.put(name,value);
  }

  public void connect()throws Throwable{
    httpClient = new HttpClient(new MultiThreadedHttpConnectionManager());

    if (protocol.equals("https")){
      authSSLProtocolSocketFactory = new AuthSSLProtocolSocketFactory();
      authSSLProtocolSocketFactory.keyStoreName       = keyStore;
      authSSLProtocolSocketFactory.keyStorePassword   = keyStorePassword;
      authSSLProtocolSocketFactory.trustStoreName     = trustStore;
      authSSLProtocolSocketFactory.trustStorePassword = trustStorePassword;
      myProtocol = new Protocol(protocol, authSSLProtocolSocketFactory,
port);
      httpClient.getHostConfiguration().setHost(host, port, myProtocol);
    }else{
      httpClient.getHostConfiguration().setHost(host, port, protocol);
    }

    HttpState initialState = new HttpState();
    
    if (cookies != null){
      for (Enumeration e = cookies.keys(); e.hasMoreElements();){
        s1 = (String) e.nextElement();
        cookie = new Cookie(host, s1, (String) cookies.get(s1), "/", -1,
false);
        initialState.addCookie(cookie);
      }
    }

    if (httpAuthUsername != null){
      httpClient.getParams().setAuthenticationPreemptive(true);
      Credentials defaultcreds = new
UsernamePasswordCredentials(httpAuthUsername, httpAuthPassword);
      initialState.setCredentials(new AuthScope(host, port, httpAuthRealm),
defaultcreds);
    }

    httpClient.setState(initialState);
  }

  public void get()throws Throwable{
    get(path);
  }
  
  public void get(String path)throws Throwable{
    if (parameters == null){
      nameValuePairs = null;
     }else{
      nameValuePairs = new NameValuePair[parameters.size()];
      i1 = -1;
      for (Enumeration e = parameters.keys(); e.hasMoreElements();){
        i1 ++;
        s1 = (String) e.nextElement();
        nameValuePairs[i1] = new NameValuePair(s1,(String)
parameters.get(s1));
      }
    }
    get(path,nameValuePairs);

  }

  public int get(String path, NameValuePair[] nameValuePairs)throws
Throwable{
    int i = 0;
    url = "/" + path;
    GetMethod method = new GetMethod(url);
    method.getParams().setCookiePolicy(CookiePolicy.RFC_2109);
    if (nameValuePairs != null){
      method.setQueryString(nameValuePairs);
    }
    // Execute the method.
    responseAsStream = new ByteArrayOutputStream();
    int statusCode = httpClient.executeMethod(method);
    if (statusCode == HttpStatus.SC_OK) {
      byte[] buffer    = new byte[1000];
      int bytesRead    = 0;
      InputStream in   = method.getResponseBodyAsStream();
      while(true){
        bytesRead = in.read(buffer);
        if (bytesRead == -1){
          break;
        }
        responseAsStream.write(buffer,0,bytesRead);
      }
      responseAsStream.close();
      in.close();
    }
    method.releaseConnection();
    return statusCode;
  }

  public void post()throws Throwable{
    post(path);
  }
 
  public void post(String path)throws Throwable{
    if (parameters == null){
      nameValuePairs = null;
     }else{
      nameValuePairs = new NameValuePair[parameters.size()];
      i1 = -1;
      for (Enumeration e = parameters.keys(); e.hasMoreElements();){
        i1 ++;
        s1 = (String) e.nextElement();
        nameValuePairs[i1] = new NameValuePair(s1,(String)
parameters.get(s1));
      }
    }
    post(path,nameValuePairs);

  }
  public int post(String path, NameValuePair[] nameValuePairs)throws
Throwable{
    int i = 0;
    url = "/" + path;
    PostMethod method = new PostMethod(url);
    method.getParams().setCookiePolicy(CookiePolicy.RFC_2109);
    if (nameValuePairs != null){
      method.setRequestBody(nameValuePairs);
    }
    // Execute the method.
    responseAsStream = new ByteArrayOutputStream();
    int statusCode = httpClient.executeMethod(method);
    if (statusCode == HttpStatus.SC_OK) {
      byte[] buffer    = new byte[1000];
      int bytesRead    = 0;
      InputStream in   = method.getResponseBodyAsStream();
      while(true){
        bytesRead = in.read(buffer);
        if (bytesRead == -1){
          break;
        }
        responseAsStream.write(buffer,0,bytesRead);
      }
      responseAsStream.close();
      in.close();
    }
    method.releaseConnection();
    return statusCode;
  }

  public String getResponseAsString()throws Exception{
    return responseAsStream.toString();
  }
  public byte[] getResponseAsBytes()throws Exception{
    return responseAsStream.toByteArray();
  }

}
-----Original Message-----
From: maikeru8 [mailto:msantos.mykel@gmail.com] 
Sent: Wednesday, March 31, 2010 1:38 PM
To: user@commons.apache.org
Subject: how to implement login using httpclient?


I'm still a beginner with regards to Apache Commons, and I wish to implement
the login for a plugin in Eclipse. The user does not log in via the browser
but rather Eclipse instead. And I found out about httpclient and I was
wondering if I could use it to implement the client-side, and then I decided
to use Java Servlets to implement the server-side.

Any suggestions on how to use it? Just giving simple examples is good enough
for me :)

Thanks for those who will reply. :)
-- 
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