java2: HttpClient，实现登录，请求等操作，session保持

HttpClient，httpclient.jar包中的，我则喜欢折射成类似于dll以用的形式，知道在哪个namespace下

http://hc.apache.org/httpcomponents-client

可以从这里获取或得到些信息

实现的目标：

1.模拟登录

2.登录之后，模拟提交请求

 

关键点：

1.session状态保持

2.页面隐藏的属性获取

之前用HttpURLConnection，但未成功，瓶颈在于没有绕过session保持上，最终还是使用HttpClient，实现相对容易些

 

示例代码

（代码有删减，不见得能够跑通，需要修改）

 

/**
*
*/
package httpclienttest;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Random;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
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.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;

import com.alibaba.ccbu.parseelements.ParseTest;

/**
* @author forward
*
*/
public class LoginFormDemo {

 public static void DemoLoginTwo() throws Exception {

DefaultHttpClient httpclient = new DefaultHttpClient();

HttpGet httpget = new HttpGet(
http://xxxx.com/xx.htm);

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());
}
}

// action=xxx&Password=xxxx
HttpPost httpost = new HttpPost(
"http://localhost/sss");


List<NameValuePair> nvps = new ArrayList<NameValuePair>();
nvps.add(new BasicNameValuePair("LoginId", "xxxx"));
nvps.add(new BasicNameValuePair("Password", "xxxxx"));
nvps.add(new BasicNameValuePair("action", "xxxx"));
nvps.add(new BasicNameValuePair("eventSubmit_doPost", "xxxx"));

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("Time now: " + new Date().toString());
System.out.println("-------------------1---------------------");
httpget = new HttpGet(http://localhost/test);

System.out.println("executing request " + httpget.getURI());

// Create a response handler
ResponseHandler<String> responseHandler = new BasicResponseHandler();
String responseBody = httpclient.execute(httpget, responseHandler);
// System.out.println(responseBody);

System.out.println("Time now: " + new Date().toString());
System.out.println("-------------------2---------------------"); // 这里是为了获取页面上的hidden，用来提交的时候继续使用
hidden= ParseTest.testTest(responseBody);

System.out.println(csrfToken);

System.out.println("Time now: " + new Date().toString());
System.out.println("---------------3-post offer begin---------------");
// post offer

httpost = new HttpPost("http://local/test");
host

String keywords = "001autop" + randomString(4);
nvps = new ArrayList<NameValuePair>();
// post时，提交的form信息

nvps.add(new BasicNameValuePair("action", "xxxxx"));
nvps.add(new BasicNameValuePair("event_submit_do_process", "submit"));nvps.add(new BasicNameValuePair("topCatFormKey", "58"));
nvps.add(new BasicNameValuePair("names1", "xxxx"));

nvps.add(new BasicNameValuePair("names2", "9.00"));


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

responseHandler = new BasicResponseHandler();
responseBody = httpclient.execute(httpost, responseHandler);
// System.out.println(responseBody);
writeFile("E:\result.html", responseBody);

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

System.out.println("Login form get: " + response.getStatusLine());
if (entity != null) {
entity.consumeContent();
}
System.out.println("Time now: " + new Date().toString());
System.out.println("---------------3-post offer end----------------");
}

/**
* 产生随机字符串
* */
private static Random randGen = null;
private static char[] numbersAndLetters = null;
private static Object initLock = new Object();

public static final String randomString(int length) {

if (length < 1) {
return null;
}
if (randGen == null) {
synchronized (initLock) {
if (randGen == null) {
randGen = new Random();
numbersAndLetters = ("0123456789abcdefghijklmnopqrstuvwxyz"
+ "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ")
.toCharArray();
// numbersAndLetters =
// ("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ").toCharArray();
}
}
}
char[] randBuffer = new char[length];
for (int i = 0; i < randBuffer.length; i++) {
randBuffer[i] = numbersAndLetters[randGen.nextInt(71)];
// randBuffer[i] = numbersAndLetters[randGen.nextInt(35)];
}
return new String(randBuffer);
}

public static void writeFile(String path, String content) {
String s = new String();
String s1 = new String();
try {
File f = new File(path);
if (f.exists()) {
System.out.println("文件存在");
f.delete();
} else {

}
System.out.println("文件不存在，正在创建...");
if (f.createNewFile()) {
System.out.println("文件创建成功！");
} else {
System.out.println("文件创建失败！");
}
BufferedReader input = new BufferedReader(new FileReader(f));

while ((s = input.readLine()) != null) {
s1 += s + " ";
}
// System.out.println("文件内容：" + s1);
input.close();
s1 += content;

BufferedWriter output = new BufferedWriter(new FileWriter(f));
output.write(s1);
output.close();
} catch (Exception e) {
e.printStackTrace();
}
}

}

 

forward.molly.宝儿 独自行走