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httpclient4模拟登陆问题,用OCR可以识别验证码,但是模拟post的时候总是说验证码有误,求帮忙

0
悬赏园豆:30 [已关闭问题] 关闭于 2012-09-16 00:58
 1 import java.awt.image.BufferedImage;
 2 import java.io.InputStream;
 3 import java.util.ArrayList;
 4 import java.util.List;
 5 
 6 import javax.imageio.ImageIO;
 7 
 8 import org.apache.http.Consts;
 9 import org.apache.http.HttpEntity;
10 import org.apache.http.HttpResponse;
11 import org.apache.http.NameValuePair;
12 import org.apache.http.client.entity.UrlEncodedFormEntity;
13 import org.apache.http.client.methods.HttpGet;
14 import org.apache.http.client.methods.HttpPost;
15 import org.apache.http.cookie.Cookie;
16 import org.apache.http.impl.client.DefaultHttpClient;
17 import org.apache.http.message.BasicNameValuePair;
18 import org.apache.http.util.EntityUtils;
19 
20 import com.asprise.util.ocr.OCR;
21 
22 /**
23  * @title: test2.java
24  * @package
25  * @description: TODO
26  * @author caiyigo
27  * @date 2012-9-15 下午9:17:59
28  * @version v1.00
29  */
30 
31 public class test2 {
32     public static void main(String[] args) throws Exception {
33 
34         DefaultHttpClient httpclient = new DefaultHttpClient();
35         try {
36             HttpGet httpget = new HttpGet(
37                     "http://query.5184.com/query/image.jsp");
38 
39             HttpResponse response = httpclient.execute(httpget);
40             HttpEntity entity = response.getEntity();
41             System.out.println("获取验证码: " + response.getStatusLine());
42             /* System.out.println(EntityUtils.toString(entity)); */
43             InputStream is = entity.getContent();
44             BufferedImage image = ImageIO.read(is);
45             String imgcode = new OCR().recognizeEverything(image);
46 
47             System.out.println("\n---- 验证码是: ------- \n" + imgcode);
48 
49             HttpPost httpost = new HttpPost(
50                     "http://query.5184.com/query/zk/zk_seat_2012_07.jsp");
51 
52             List<NameValuePair> nvps = new ArrayList<NameValuePair>();
53             nvps.add(new BasicNameValuePair("name0", "010211201317"));
54             nvps.add(new BasicNameValuePair("rand", imgcode));
55             nvps.add(new BasicNameValuePair("serChecked", "on"));
56             httpost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8));
57 
58             response = httpclient.execute(httpost);
59             entity = response.getEntity();
60             System.out.println(EntityUtils.toString(entity));
61             System.out.println("返回: " + response.getStatusLine());
62 
63             System.out.println(response.getProtocolVersion());
64 
65             System.out.println(response.getStatusLine().getStatusCode());
66 
67             System.out.println(response.getStatusLine().getReasonPhrase());
68 
69             EntityUtils.consume(entity);
70 
71         } finally {
72             
73             httpclient.getConnectionManager().shutdown();
74         }
75     }
76 }
问题补充:

验证码识别没有问题,验证过了,应该是Post的时候出问题了

cai-yigo的主页 cai-yigo | 初学一级 | 园豆:176
提问于:2012-09-15 22:17
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所有回答(4)
0

验证码识别后多了一个空格

cai-yigo | 园豆:176 (初学一级) | 2012-09-16 00:58
0

请问楼主的问题解决了吗?求解。。。

地球上的火星人 | 园豆:202 (菜鸟二级) | 2014-11-17 17:06
0

猜测是httpclient没有处理cookie,“获取验证码”和“登录”两次提交的cookie不同(或者没有提交cookie),服务器认为是两次独立的请求,所以验证码校验失败吧。

 

只是猜测,建议用Fiddler工具抓包看看就知道了。

Anic | 园豆:202 (菜鸟二级) | 2015-05-06 15:17
0

很显然是没有处理cookie,因为请求验证码和post数据两次不是一次请求,要带会话信息sessionid

CGeezer | 园豆:202 (菜鸟二级) | 2015-10-17 18:39
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