HttpClient + Jsoup模拟登录教务处并获取课表
1 package com.example.upr.net;
2
3 import java.io.BufferedReader;
4 import java.io.IOException;
5 import java.io.InputStream;
6 import java.io.InputStreamReader;
7 import java.io.UnsupportedEncodingException;
8 import java.util.ArrayList;
9 import java.util.List;
10
11 import org.apache.http.HttpEntity;
12 import org.apache.http.HttpResponse;
13 import org.apache.http.NameValuePair;
14 import org.apache.http.client.ClientProtocolException;
15 import org.apache.http.client.HttpClient;
16 import org.apache.http.client.entity.UrlEncodedFormEntity;
17 import org.apache.http.client.methods.HttpGet;
18 import org.apache.http.client.methods.HttpPost;
19 import org.apache.http.cookie.Cookie;
20 import org.apache.http.impl.client.AbstractHttpClient;
21 import org.apache.http.impl.client.DefaultHttpClient;
22 import org.apache.http.message.BasicNameValuePair;
23 import org.jsoup.Jsoup;
24 import org.jsoup.nodes.Document;
25 import org.jsoup.nodes.Element;
26 import org.jsoup.select.Elements;
27
28 import com.example.upr.CompleteListener;
29
30 import android.R.integer;
31 import android.os.AsyncTask;
32 import android.provider.ContactsContract.Contacts.Data;
33 import android.util.Log;
34 import android.widget.Toast;
35
36 public class Login extends AsyncTask{
37
38 private String zjh;
39 private String mm;
40 private String webPage;
41 private String [][] kebiao=new String[15][8];
42 private CompleteListener listener;
43 public Login(String account, String password, CompleteListener listener) {
44 zjh= account;
45 mm= password;
46
47 this.listener= listener;
48 }
49 @Override
50 protected String[][] doInBackground(Void... arg0) {
51 List list=new ArrayList();
52 list.add(new BasicNameValuePair("zjh", zjh));
53 list.add(new BasicNameValuePair("mm", mm));//表单信息
54 String encode="gb2312";//编码格式，从F12工具中可以找到
55 HttpClient httpClient=new DefaultHttpClient();
56 List cookies;
57 try {
58 HttpEntity entity=new UrlEncodedFormEntity(list ,encode);//封装数据
59 HttpPost post=new HttpPost(com.example.upr.Constant.LOGIN_URL);//建立POST请求
60 post.setEntity(entity);
61 HttpResponse httpResponse= httpClient.execute(post);
62 String data, result;
63 if (httpResponse.getStatusLine().getStatusCode()==200) {//登录成功
64 cookies=((AbstractHttpClient) httpClient).getCookieStore().getCookies();//获取Cookie
65 HttpGet httpGet=new HttpGet("");
66 httpGet.setHeader("Cookie", "JSESSIONID="+ cookies.get(0).getValue()+";"+
67 "NSC_kjbpxv-iuuq="+cookies.get(1).getValue());//注意分号
68 httpResponse=new DefaultHttpClient().execute(httpGet);
69
70 StringBuffer sb=new StringBuffer();
71 entity= httpResponse.getEntity();
72 InputStream inputStream= entity.getContent();
73 BufferedReader br=new BufferedReader(new InputStreamReader(inputStream, encode));
74 while ((data=br.readLine()) !=null) {
75 sb.append(data); //读取返回的网页
76 }
77 result= sb.toString();
78 webPage= result;
79
80 } else {
81 return null;
82 }
83 } catch (UnsupportedEncodingException e) {
84 e.printStackTrace();
85 return null;
86 } catch (ClientProtocolException e) {
87 // TODO Auto-generated catch block
88 e.printStackTrace();
89 return null;
90 } catch (IOException e) {
91 // TODO Auto-generated catch block
92 e.printStackTrace();
93 return null;
94 }
95
96 Document document= Jsoup.parse(webPage);
97 if (document !=null) {
98 Element element=document.getElementById("user");//通过id直接定位到数据
99 Elements trElements=element.select("tr");
100 //以下是提取课表信息，每个网站不同，一下代码要解析的html放在最下面了
101 for (int i=0; i < trElements.size(); i++) {
102 Elements tdElements=trElements.get(i).select("td");
103 for (int j=0; j < tdElements.size(); j++) {
104 String text= tdElements.get(j).text();
105 if (tdElements.size()==1) {
106 continue;
107 } else if (tdElements.size()==9) {
108 if (j !=0) {
109 kebiao[i][j-1]= text;
110 }
111 }else {
112 kebiao[i][j]= text;
113 }
114
115 }
116 }
117 return kebiao;
118 } else {
119 return null;
120 }
121
122 }
123 @Override
124 protected void onPostExecute(String[][] result) {
125 super.onPostExecute(result);
126 listener.onConnectFinish(result);//执行回调函数，更新主UI
127 }
128 }
129