由于首都之窗网站第二页和第二页网址不变，已经和林子雨老师教程相差甚远，所以现在选择htmlunit模拟点击，（跳转摁钮显示网页仍是第一页），所以本代码用的一直是点击下一页摁钮。
爬取网址：http://www.beijing.gov.cn/hudong/hdjl/com.web.search.mailList.flow
获取代码：
1 package util;
2
3 import java.io.IOException;
4 import java.util.ArrayList;
5 import java.util.LinkedList;
6 import java.util.List;
7
8 import com.gargoylesoftware.htmlunit.BrowserVersion;
9 import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;
10 import com.gargoylesoftware.htmlunit.ImmediateRefreshHandler;
11 import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController;
12 import com.gargoylesoftware.htmlunit.WebClient;
13 import com.gargoylesoftware.htmlunit.html.HtmlElement;
14 import com.gargoylesoftware.htmlunit.html.HtmlPage;
15
16 public class 首都之窗 {
17 static List<String> lines_zi=new LinkedList<String>();
18 static List<String> lines_jian=new LinkedList<String>();
19 static List<String> lines_tou=new LinkedList<String>();
20
21 static String line;
22 public static void Value_start()
23 {
24 // TODO 自动生成的方法存根
25 WebClient webClient=new WebClient(BrowserVersion.CHROME); // 实例化Web客户端
26
27 System.out.println("AAAAAA");
28 try {
29 webClient.getOptions().setActiveXNative(false);
30 //webClient.getOptions().setCssEnabled(false);
31 //webClient.getOptions().setRedirectEnabled(true);
32 webClient.getOptions().setJavaScriptEnabled(true);
33 webClient.getOptions().setDoNotTrackEnabled(true);
34 webClient.getOptions().setThrowExceptionOnScriptError(false);
35 webClient.getOptions().setThrowExceptionOnFailingStatusCode(false);
36 webClient.getCache().setMaxSize(100);
37 webClient.getOptions().setJavaScriptEnabled(true);//运行js脚本执行
38 webClient.setAjaxController(new NicelyResynchronizingAjaxController());//设置支持AJAX
39 webClient.getOptions().setCssEnabled(false);//忽略css
40 webClient.getOptions().setUseInsecureSSL(true);//ssl安全访问
41 webClient.getOptions().setThrowExceptionOnScriptError(false); //解析js出错时不抛异常
42 //webClient.getOptions().setTimeout(50000); //超时时间 ms
43 webClient.getCookieManager().setCookiesEnabled(true);
44 webClient.getCache().clear();
45 webClient.setRefreshHandler(new ImmediateRefreshHandler());
46 webClient.getOptions().setTimeout(2*1000); //网页多少ms超时响应
47 webClient.setJavaScriptTimeout(600*1000); //javaScript多少ms超时
48 webClient.setAjaxController(new NicelyResynchronizingAjaxController());
49 //webClient.setJavaScriptTimeout(600*1000);
50 //webClient.getOptions().setRedirectEnabled(true);
51 webClient.waitForBackgroundJavaScript(60*1000);
52
53 HtmlPage page=webClient.getPage("http://www.beijing.gov.cn/hudong/hdjl/com.web.search.mailList.flow"); // 解析获取页面
54 HtmlElement a=page.getElementByName("nextPage");
55 int j=1,lastj=0;
56 FileHandle fh=new FileHandle();
57 StringHandle sh=new StringHandle();
58 List<String> lastInfo_zi=new ArrayList<String>();
59 List<String> lastInfo_jian=new ArrayList<String>();
60 List<String> lastInfo_tou=new ArrayList<String>();
61 System.out.println("asdfsdaf");
62 fh.outFile(""+"\r\n", "E:\\578095023\\FileRecv\\寒假作业\\大三寒假作业\\北京市政百姓信件分析实战\\list.txt", false);
63
64 while(j!=600)
65 {
66
67 String nowInfo=page.asXml();
68
69 List<String> infoList_zi=sh.getExpString("letterdetail\\('.*?','.*?'\\)", nowInfo);
70 int g_size_zi=infoList_zi.size();
71 if(sh.StringListSameOutStringList(infoList_zi, lastInfo_zi).size()!=g_size_zi&&g_size_zi==7)
72 {
73 //System.out.println(g_size);
74 for(int i=0;i<g_size_zi;i++)
75 {
76 String theWeb=infoList_zi.get(i).replaceAll("letterdetail\\('.*?','", "").replace("')", "");
77 System.out.println(theWeb);
78 lines_zi.add(theWeb);
79 fh.outFile(theWeb+"\r\n", "E:\\578095023\\FileRecv\\寒假作业\\大三寒假作业\\北京市政百姓信件分析实战\\list.txt", true);
80
81 if(i==g_size_zi-1)
82 {
83 lastInfo_zi=infoList_zi;
84 System.out.println(j);
85 j++;
86 break;
87 }
88
89 }
90 page=a.click();
91 }
92 //page=a.click();
93 }
94
95
96 }catch (FailingHttpStatusCodeException | IOException e) {
97 // TODO Auto-generated catch block
98 e.printStackTrace();
99 } finally{
100 webClient.close(); // 关闭客户端，释放内存
101 }
102
103 }
104 public static void main(String[] args) {
105 Value_start();
106 }
107
108 }
getPass
爬取详细数据：
1 package util;
2 import java.io.*;
3 import java.util.List;
4
5 import org.jsoup.Connection;
6 import org.jsoup.Jsoup;
7 import org.jsoup.nodes.Document;
8 import org.jsoup.nodes.Element;
9 import org.jsoup.select.Elements;
10
11 import java.io.IOException;
12 import java.util.ArrayList;
13 import java.util.List;
14
15 import org.jsoup.Connection;
16 import org.jsoup.Jsoup;
17 import org.jsoup.nodes.Document;
18 import org.jsoup.nodes.Element;
19 import org.jsoup.select.Elements;
20
21 import util.SslUtils;
22
23 import us.codecraft.webmagic.Page;
24 import us.codecraft.webmagic.Site;
25 import us.codecraft.webmagic.Spider;
26 import us.codecraft.webmagic.processor.PageProcessor;
27
28 import com.bean.InfoBean;
29 import com.dao.InfoDao;
30 public class pa2 implements PageProcessor {
31 static int num=0;
32 static String Id;
33 static String Question;
34 static String Question_user;
35 static String Question_date;
36 static String Question_info;
37 static String Answer;
38 static String Answer_user;
39 static String Answer_date;
40 static String Answer_info;
41 static String Url;
42 //static String regEx="[\n`~!@#$%^&()+=|{}':;',\\[\\].<>/?~！@#￥%……&*（）——+|{}【】‘；：”“’。， 、？? ]";
43 static String aa = "";//这里是将特殊字符换为aa字符串," "代表直接去掉
44
45 // 抓取网站的相关配置，包括编码、抓取间隔、重试次数等
46 private Site site = Site.me().setRetryTimes(3).setSleepTime(100);
47 private static int count =0;
48
49 @Override
50 public Site getSite() {
51 return site;
52 }
53 //主页面
54 public void parent(Page page)
55 {
56
57 System.out.println("抓取的内容\n"+
58 page.getHtml().xpath("//span[@name='cutStr' and @dispLength='68']//text()").get()
59 );
60 }
61 //子页面
62 public void child(Page page) throws IOException {
63
64 System.out.println("RRRRRRRRR");
65 BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(new File("E:\\578095023\\FileRecv\\寒假作业\\大三寒假作业\\list.txt")),
66 "UTF-8"));
67 String line=null;
68 System.out.println("SSSSSSSS");
69 while((line=br.readLine())!=null)
70 {
71
72 String url= "http://www.beijing.gov.cn/hudong/hdjl/com.web.consult.";
73 String type="";//声明类型码
74 type="consultDetail.flow?originalId=";
75 url+=type;
76 url+=line;
77 System.out.println(url);
78 page.addTargetRequest(url);
79
80 url= "http://www.beijing.gov.cn/hudong/hdjl/com.web.consult.";
81 type="";//声明类型码
82 type="suggesDetail.flow?originalId=";
83 url+=type;
84 url+=line;
85 System.out.println(url);
86 page.addTargetRequest(url);
87
88 url= "http://www.beijing.gov.cn/hudong/hdjl/com.web.consult.";
89 type="";//声明类型码
90 type="complainDetail.flow?originalId=";
91 url+=type;
92 url+=line;
93 System.out.println(url);
94 page.addTargetRequest(url);
95 }
96
97 if(page.getUrl().regex("http://www.beijing.gov.cn/hudong/hdjl/com.web.search.mailList.flow").match())
98 {
99
100 parent(page);
101 }
102 else
103 {
104 Question=page.getHtml().xpath("//div[contains(@class, 'col-xs-10')]/strong//text()").get().trim();
105 // Question=Question.replaceAll(regEx, aa);
106
107 Question_user=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'my-3')]/div[contains(@class, 'col-xs-10') and contains(@class, 'text-muted')]//text()").get().trim();
108 //Question_user=Question_user.replaceAll(regEx, aa);
109 Question_user=Question_user.replaceAll("来信人", aa).trim();
110 Question_user=Question_user.replaceAll("：", aa).trim();
111 Question_date=page.getHtml().xpath("//div[contains(@class, 'col-xs-12')]/div[contains(@class, 'col-xs-5')]//text()").get();
112 // Question=Question.replaceAll(regEx, aa);
113 Question_date=Question_date.replaceAll("时间", aa).trim();
114 Question_date=Question_date.replaceAll("：", aa).trim();
115
116 Question_info=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'mx-2') ]//text()").get();
117 //Question_info=Question_info.replaceAll(regEx, aa);
118
119 Answer=page.getHtml().xpath("//div[contains(@class, 'col-xs-9') and contains(@class, 'my-2')]//text()").get();
120 //Answer=Answer.replaceAll(regEx, aa);
121
122 Answer_user=page.getHtml().xpath("//div[contains(@class, 'col-xs-9') and contains(@class, 'my-2')]//text()").get();
123 // Answer_user=Answer_user.replaceAll(regEx, aa);
124
125 Answer_date=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'col-sm-3')and contains(@class, 'col-md-3') and contains(@class, 'my-2')]//text()").get();
126 // Answer_date=Answer_date.replaceAll(regEx, aa);
127 Answer_date=Answer_date.replaceAll("答复时间", aa).trim();
128 Answer_date=Answer_date.replaceAll("：", aa).trim();
129
130
131 List<String> values=new ArrayList<String>();
132 values=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'my-3')and contains(@class, 'p-4')]//*//text()").all();
133 Answer_info=null;
134 for(String value:values)
135 {
136 Answer_info+=value;
137 }
138 if(Answer_info==null)
139 {
140 Answer_info=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'my-3')and contains(@class, 'p-4')]//text()").get();
141 }
142 Answer_info=Answer_info.replaceAll("？", aa).trim();
143 Answer_info=Answer_info.replaceAll("null", aa).trim();
144
145 Url=page.getUrl().get();
146 System.out.println("抓取的内容\n"+
147 page.getHtml().xpath("//div[contains(@class, 'col-xs-10')]/strong//text()").get()
148 );
149
150 System.out.println("Id:" + Id+
151 "\n Question:" + Question+
152 "\\n Question_user:" + Question_user+
153 "\n Question_date:" + Question_date+
154 "\n Question_info:" + Question_info+
155 "\n Answer:" + Answer+
156 "\n Answer_user:" + Answer_user+
157 "\n Answer_date:" + Answer_date+
158 "\n Answer_info:"+Answer_info+
159 "\n Url:"+Url);
160 InfoDao.add(Question, Question_user, Question_date, Question_info, Answer, Answer_user, Answer_date, Answer_info, Url);
161 }
162 count ++;
163 }
164 @Override
165 public void process(Page page) {
166 num=num+1;
167 if(num==1)
168 {
169 try {
170 child(page);
171 } catch (IOException e) {
172 e.printStackTrace();
173 }
174 }
175 else
176 {
177 Question=page.getHtml().xpath("//div[contains(@class, 'col-xs-10')]/strong//text()").get().trim();
178 // Question=Question.replaceAll(regEx, aa);
179
180 Question_user=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'my-3')]/div[contains(@class, 'col-xs-10') and contains(@class, 'text-muted')]//text()").get().trim();
181 //Question_user=Question_user.replaceAll(regEx, aa);
182 Question_user=Question_user.replaceAll("来信人", aa).trim();
183 Question_user=Question_user.replaceAll("：", aa).trim();
184 Question_date=page.getHtml().xpath("//div[contains(@class, 'col-xs-12')]/div[contains(@class, 'col-xs-5')]//text()").get();
185 // Question=Question.replaceAll(regEx, aa);
186 Question_date=Question_date.replaceAll("时间", aa).trim();
187 Question_date=Question_date.replaceAll("：", aa).trim();
188
189 Question_info=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'mx-2') ]//text()").get();
190 //Question_info=Question_info.replaceAll(regEx, aa);
191
192 Answer=page.getHtml().xpath("//div[contains(@class, 'col-xs-9') and contains(@class, 'my-2')]//text()").get();
193 //Answer=Answer.replaceAll(regEx, aa);
194
195 Answer_user=page.getHtml().xpath("//div[contains(@class, 'col-xs-9') and contains(@class, 'my-2')]//text()").get();
196 // Answer_user=Answer_user.replaceAll(regEx, aa);
197
198 Answer_date=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'col-sm-3')and contains(@class, 'col-md-3') and contains(@class, 'my-2')]//text()").get();
199 // Answer_date=Answer_date.replaceAll(regEx, aa);
200 Answer_date=Answer_date.replaceAll("答复时间", aa).trim();
201 Answer_date=Answer_date.replaceAll("：", aa).trim();
202
203 List<String> values=new ArrayList<String>();
204 values=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'my-3')and contains(@class, 'p-4')]//*//text()").all();
205 Answer_info=null;
206 for(String value:values)
207 {
208 Answer_info+=value;
209 }
210 if(Answer_info==null)
211 {
212 Answer_info=page.getHtml().xpath("//div[contains(@class, 'col-xs-12') and contains(@class, 'my-3')and contains(@class, 'p-4')]//text()").get();
213 }
214 Answer_info=Answer_info.replaceAll("？", aa).trim();
215 Answer_info=Answer_info.replaceAll("null", aa).trim();
216
217 Url=page.getUrl().get();
218 System.out.println("抓取的内容\n"+
219 page.getHtml().xpath("//div[contains(@class, 'col-xs-10')]/strong//text()").get()
220 );
221
222 System.out.println("Id:" + Id+
223 "\n Question:" + Question+
224 "\\n Question_user:" + Question_user+
225 "\n Question_date:" + Question_date+
226 "\n Question_info:" + Question_info+
227 "\n Answer:" + Answer+
228 "\n Answer_user:" + Answer_user+
229 "\n Answer_date:" + Answer_date+
230 "\n Answer_info:"+Answer_info+
231 "\n Url:"+Url);
232 InfoDao.add(Question, Question_user, Question_date, Question_info, Answer, Answer_user, Answer_date, Answer_info, Url);
233 }
234
235 }
236
237 public static void main(String[] args) {
238 try {
239 SslUtils.ignoreSsl();
240 } catch (Exception e) {
241 e.printStackTrace();
242 }
243 // jsoup("http://www.beijing.gov.cn/hudong/hdjl/com.web.search.mailList.flow");
244 long startTime, endTime;
245 System.out.println("开始爬取...");
246 InfoDao.delete();
247 startTime = System.currentTimeMillis();
248 Spider.create(new pa2()).addUrl("http://www.beijing.gov.cn/hudong/hdjl/com.web.search.mailList.flow").thread(5).run();
249 endTime = System.currentTimeMillis();
250 System.out.println("爬取结束，耗时约" + ((endTime - startTime) / 1000) + "秒，抓取了"+count+"条记录");
251 }
252
253
254 }
getInfo
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