文章目录
- 1、jsoup爬虫简单介绍
- 2、相关代码
- 2.1导入pom依赖
- 2.2、图片爬取
- 2.3、图片本地化
- 3、百度云链接爬虫
1、jsoup爬虫简单介绍
jsoup 是一款 Java 的HTML 解析器，可通过DOM，CSS选择器以及类似于JQuery的操作方法来提取和操作Html文档数据。
这两个涉及到的点有以下几个：
1、httpclient获取网页内容
2、Jsoup解析网页内容
3、要达到增量爬取的效果，那么需要利用缓存ehcache对重复URL判重
4、将爬取到的数据存入数据库
5、为解决某些网站防盗链的问题，那么需要将对方网站的静态资源（这里只处理了图片）本地化
2、相关代码
2.1导入pom依赖
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.zrh</groupId><artifactId>T226_jsoup</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>T226_jsoup</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><!-- jdbc驱动包 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.44</version></dependency><!-- 添加Httpclient支持 --><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.2</version></dependency><!-- 添加jsoup支持 --><dependency><groupId>org.jsoup</groupId><artifactId>jsoup</artifactId><version>1.10.1</version></dependency><!-- 添加日志支持 --><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.16</version></dependency><!-- 添加ehcache支持 --><dependency><groupId>net.sf.ehcache</groupId><artifactId>ehcache</artifactId><version>2.10.3</version></dependency><!-- 添加commons io支持 --><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.5</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.47</version></dependency></dependencies>
</project>
2.2、图片爬取
需要修改你要爬取的图片地址
private static String URL = "http://www.yidianzhidao.com/UploadFiles/img_1_446119934_1806045383_26.jpg";
2.3、图片本地化
crawler.properties
dbUrl=jdbc:mysql://localhost:3306/zrh?autoReconnect=true
dbUserName=root
dbPassword=123
jdbcName=com.mysql.jdbc.Driver
ehcacheXmlPath=C://blogCrawler/ehcache.xml
blogImages=D://blogCrawler/blogImages/
log4j.properties
log4j.rootLogger=INFO, stdout,D #Console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n#D
log4j.appender.D = org.apache.log4j.RollingFileAppender
log4j.appender.D.File = C://blogCrawler/bloglogs/log.log
log4j.appender.D.MaxFileSize=100KB
log4j.appender.D.MaxBackupIndex=100
log4j.appender.D.Append = true
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
DbUtil.java
package com.zrh.util;import java.sql.Connection;
import java.sql.DriverManager;/*** 数据库工具类* @author user**/
public class DbUtil {/*** 获取连接* @return* @throws Exception*/public Connection getCon()throws Exception{Class.forName(PropertiesUtil.getValue("jdbcName"));Connection con=DriverManager.getConnection(PropertiesUtil.getValue("dbUrl"), PropertiesUtil.getValue("dbUserName"), PropertiesUtil.getValue("dbPassword"));return con;}/*** 关闭连接* @param con* @throws Exception*/public void closeCon(Connection con)throws Exception{if(con!=null){con.close();}}public static void main(String[] args) {DbUtil dbUtil=new DbUtil();try {dbUtil.getCon();System.out.println("数据库连接成功");} catch (Exception e) {e.printStackTrace();System.out.println("数据库连接失败");}}
}
PropertiesUtil.java
package com.zrh.util;import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;/*** properties工具类* @author user**/
public class PropertiesUtil {/*** 根据key获取value值* @param key* @return*/public static String getValue(String key){Properties prop=new Properties();InputStream in=new PropertiesUtil().getClass().getResourceAsStream("/crawler.properties");try {prop.load(in);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return prop.getProperty(key);}
}
最重要的代码来了：
BlogCrawlerStarter.java（核心代码）
package com.zrh.crawler;
import java.io.File;
import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;import org.apache.commons.io.FileUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;import com.zrh.util.DateUtil;
import com.zrh.util.DbUtil;
import com.zrh.util.PropertiesUtil;import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Status;/*** @author Administrator**/
public class BlogCrawlerStarter {private static Logger logger = Logger.getLogger(BlogCrawlerStarter.class);
// https://www.csdn.net/nav/newarticlesprivate static String HOMEURL = "https://www.cnblogs.com/";private static CloseableHttpClient httpClient;private static Connection con;private static CacheManager cacheManager;private static Cache cache;/*** httpclient解析首页，获取首页内容*/public static void parseHomePage() {logger.info("开始爬取首页：" + HOMEURL);cacheManager = CacheManager.create(PropertiesUtil.getValue("ehcacheXmlPath"));cache = cacheManager.getCache("cnblog");httpClient = HttpClients.createDefault();HttpGet httpGet = new HttpGet(HOMEURL);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config);CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if (response == null) {logger.info(HOMEURL + ":爬取无响应");return;}if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String homePageContent = EntityUtils.toString(entity, "utf-8");// System.out.println(homePageContent);parseHomePageContent(homePageContent);}} catch (ClientProtocolException e) {logger.error(HOMEURL + "-ClientProtocolException", e);} catch (IOException e) {logger.error(HOMEURL + "-IOException", e);} finally {try {if (response != null) {response.close();}if (httpClient != null) {httpClient.close();}} catch (IOException e) {logger.error(HOMEURL + "-IOException", e);}}if(cache.getStatus() == Status.STATUS_ALIVE) {cache.flush();}cacheManager.shutdown();logger.info("结束爬取首页：" + HOMEURL);}/*** 通过网络爬虫框架jsoup，解析网页类容，获取想要数据（博客的连接）* * @param homePageContent*/private static void parseHomePageContent(String homePageContent) {Document doc = Jsoup.parse(homePageContent);//#feedlist_id .list_con .title h2 aElements aEles = doc.select("#post_list .post_item .post_item_body h3 a");for (Element aEle : aEles) {
// 这个是首页中的博客列表中的单个链接URLString blogUrl = aEle.attr("href");if (null == blogUrl || "".equals(blogUrl)) {logger.info("该博客未内容，不再爬取插入数据库！");continue;}if(cache.get(blogUrl) != null) {logger.info("该数据已经被爬取到数据库中，数据库不再收录！");continue;}
// System.out.println("************************"+blogUrl+"****************************");parseBlogUrl(blogUrl);}}/*** 通过博客地址获取博客的标题，以及博客的类容* * @param blogUrl*/private static void parseBlogUrl(String blogUrl) {logger.info("开始爬取博客网页：" + blogUrl);httpClient = HttpClients.createDefault();HttpGet httpGet = new HttpGet(blogUrl);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config);CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if (response == null) {logger.info(blogUrl + ":爬取无响应");return;}if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String blogContent = EntityUtils.toString(entity, "utf-8");parseBlogContent(blogContent, blogUrl);}} catch (ClientProtocolException e) {logger.error(blogUrl + "-ClientProtocolException", e);} catch (IOException e) {logger.error(blogUrl + "-IOException", e);} finally {try {if (response != null) {response.close();}} catch (IOException e) {logger.error(blogUrl + "-IOException", e);}}logger.info("结束爬取博客网页：" + HOMEURL);}/*** 解析博客类容，获取博客中标题以及所有内容* * @param blogContent*/private static void parseBlogContent(String blogContent, String link) {Document doc = Jsoup.parse(blogContent);if(!link.contains("ansion2014")) {System.out.println(blogContent);}Elements titleEles = doc//#mainBox main .blog-content-box .article-header-box .article-header .article-title-box h1.select("#topics .post h1 a");System.out.println(titleEles.toString());if (titleEles.size() == 0) {logger.info("博客标题为空，不插入数据库！");return;}String title = titleEles.get(0).html();Elements blogContentEles = doc.select("#cnblogs_post_body ");if (blogContentEles.size() == 0) {logger.info("博客内容为空，不插入数据库！");return;}String blogContentBody = blogContentEles.get(0).html();// Elements imgEles = doc.select("img");
// List<String> imgUrlList = new LinkedList<String>();
// if(imgEles.size() > 0) {
// for (Element imgEle : imgEles) {
// imgUrlList.add(imgEle.attr("src"));
// }
// }
//
// if(imgUrlList.size() > 0) {
// Map<String, String> replaceUrlMap = downloadImgList(imgUrlList);
// blogContent = replaceContent(blogContent,replaceUrlMap);
// }String sql = "insert into `t_jsoup_article` values(null,?,?,null,now(),0,0,null,?,0,null)";try {PreparedStatement pst = con.prepareStatement(sql);pst.setObject(1, title);pst.setObject(2, blogContentBody);pst.setObject(3, link);if(pst.executeUpdate() == 0) {logger.info("爬取博客信息插入数据库失败");}else {cache.put(new net.sf.ehcache.Element(link, link));logger.info("爬取博客信息插入数据库成功");}} catch (SQLException e) {logger.error("数据异常-SQLException：",e);}}/*** 将别人博客内容进行加工，将原有图片地址换成本地的图片地址* @param blogContent* @param replaceUrlMap* @return*/private static String replaceContent(String blogContent, Map<String, String> replaceUrlMap) {for(Map.Entry<String, String> entry: replaceUrlMap.entrySet()) {blogContent = blogContent.replace(entry.getKey(), entry.getValue());}return blogContent;}/*** 别人服务器图片本地化* @param imgUrlList* @return*/private static Map<String, String> downloadImgList(List<String> imgUrlList) {Map<String, String> replaceMap = new HashMap<String, String>();for (String imgUrl : imgUrlList) {CloseableHttpClient httpClient = HttpClients.createDefault();HttpGet httpGet = new HttpGet(imgUrl);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config);CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if (response == null) {logger.info(HOMEURL + ":爬取无响应");}else {if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String blogImagesPath = PropertiesUtil.getValue("blogImages");String dateDir = DateUtil.getCurrentDatePath();String uuid = UUID.randomUUID().toString();String subfix = entity.getContentType().getValue().split("/")[1];String fileName = blogImagesPath + dateDir + "/" + uuid + "." + subfix;FileUtils.copyInputStreamToFile(entity.getContent(), new File(fileName));replaceMap.put(imgUrl, fileName);}}} catch (ClientProtocolException e) {logger.error(imgUrl + "-ClientProtocolException", e);} catch (IOException e) {logger.error(imgUrl + "-IOException", e);} catch (Exception e) {logger.error(imgUrl + "-Exception", e);} finally {try {if (response != null) {response.close();}} catch (IOException e) {logger.error(imgUrl + "-IOException", e);}}}return replaceMap;}public static void start() {while(true) {DbUtil dbUtil = new DbUtil();try {con = dbUtil.getCon();parseHomePage();} catch (Exception e) {logger.error("数据库连接势失败！");} finally {try {if (con != null) {con.close();}} catch (SQLException e) {logger.error("数据关闭异常-SQLException：",e);}}try {Thread.sleep(1000*60);} catch (InterruptedException e) {logger.error("主线程休眠异常-InterruptedException：",e);}}}public static void main(String[] args) {start();}
}
再看下我们的数据库的数据都插入了：
3、百度云链接爬虫
PanZhaoZhaoCrawler3.java
package com.zrh.crawler;import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.LinkedList;
import java.util.List;
import java.util.UUID;import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;import com.zrh.util.DbUtil;
import com.zrh.util.PropertiesUtil;import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Status;public class PanZhaoZhaoCrawler3 {private static Logger logger = Logger.getLogger(PanZhaoZhaoCrawler3.class);private static String URL = "http://www.13910.com/daren/";private static String PROJECT_URL = "http://www.13910.com";private static Connection con;private static CacheManager manager;private static Cache cache;private static CloseableHttpClient httpClient;private static long total = 0;/*** httpclient获取首页内容*/public static void parseHomePage() {logger.info("开始爬取：" + URL);manager = CacheManager.create(PropertiesUtil.getValue("ehcacheXmlPath"));cache = manager.getCache("cnblog");httpClient = HttpClients.createDefault();HttpGet httpGet = new HttpGet(URL);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config);CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if (response == null) {logger.info("链接超时！");} else {if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String pageContent = EntityUtils.toString(entity, "utf-8");parsePageContent(pageContent);}}} catch (ClientProtocolException e) {logger.error(URL + "-解析异常-ClientProtocolException", e);} catch (IOException e) {logger.error(URL + "-解析异常-IOException", e);} finally {try {if (response != null) {response.close();}if (httpClient != null) {httpClient.close();}} catch (IOException e) {logger.error(URL + "-解析异常-IOException", e);}}// 最终将数据缓存到硬盘中if (cache.getStatus() == Status.STATUS_ALIVE) {cache.flush();}manager.shutdown();logger.info("结束爬取：" + URL);}/*** Jsoup解析首页内容* @param pageContent*/private static void parsePageContent(String pageContent) {Document doc = Jsoup.parse(pageContent);Elements aEles = doc.select(".showtop .key-right .darenlist .list-info .darentitle a");for (Element aEle : aEles) {String aHref = aEle.attr("href");logger.info("提取个人代理分享主页："+aHref);String panZhaoZhaoUserShareUrl = PROJECT_URL + aHref;List<String> panZhaoZhaoUserShareUrls = getPanZhaoZhaoUserShareUrls(panZhaoZhaoUserShareUrl);for (String singlePanZhaoZhaoUserShareUrl : panZhaoZhaoUserShareUrls) {
// System.out.println("**********************************************************"+singlePanZhaoZhaoUserShareUrl+"**********************************************************");
// continue;parsePanZhaoZhaoUserShareUrl(singlePanZhaoZhaoUserShareUrl);}}}/*** 收集个人主页的前15条记录* @param panZhaoZhaoUserShareUrl* @return*/private static List<String> getPanZhaoZhaoUserShareUrls(String panZhaoZhaoUserShareUrl){List<String> list = new LinkedList<String>();list.add(panZhaoZhaoUserShareUrl);for (int i = 2; i < 16; i++) {list.add(panZhaoZhaoUserShareUrl+"page-"+i+".html");}return list;}/*** 解析盘找找加工后的用户URL* 原：http://yun.baidu.com/share/home?uk=1949795117* 现在：http://www.13910.com/u/1949795117/share/* @param panZhaoZhaoUserShareUrl 现在的url*/private static void parsePanZhaoZhaoUserShareUrl(String panZhaoZhaoUserShareUrl) {logger.info("开始爬取个人代理分享主页：："+panZhaoZhaoUserShareUrl);HttpGet httpGet = new HttpGet(panZhaoZhaoUserShareUrl);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config );CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if(response == null) {logger.info("链接超时！");}else {if(response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String pageContent = EntityUtils.toString(entity, "utf-8");parsePanZhaoZhaoUserSharePageContent(pageContent,panZhaoZhaoUserShareUrl);}}} catch (ClientProtocolException e) {logger.error(panZhaoZhaoUserShareUrl+"-解析异常-ClientProtocolException",e);} catch (IOException e) {logger.error(panZhaoZhaoUserShareUrl+"-解析异常-IOException",e);}finally {try {if(response != null) {response.close();}} catch (IOException e) {logger.error(panZhaoZhaoUserShareUrl+"-解析异常-IOException",e);}}logger.info("结束爬取个人代理分享主页：："+URL);}/*** 通过用户分享的百度云主页URL获取的内容，得到所有加工后的链接* @param pageContent* @param panZhaoZhaoUserShareUrl 加工后的用户分享主页链接*/private static void parsePanZhaoZhaoUserSharePageContent(String pageContent, String panZhaoZhaoUserShareUrl) {Document doc = Jsoup.parse(pageContent);Elements aEles = doc.select("#flist li a");if(aEles.size() == 0) {logger.info("没有爬取到百度云地址");return;}for (Element aEle : aEles) {String ahref = aEle.attr("href");parseUserHandledTargetUrl(PROJECT_URL + ahref);}
// System.out.println("***********************************"+aEles.size()+"***********************"+ahref+"**********************************************************");}/*** 解析地址* @param handledTargetUrl 这个地址中包含了加工后的百度云地址*/private static void parseUserHandledTargetUrl(String handledTargetUrl) {logger.info("开始爬取blog：："+handledTargetUrl);if(cache.get(handledTargetUrl) != null) {logger.info("数据库已存在该记录");return;}HttpGet httpGet = new HttpGet(handledTargetUrl);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config );CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if(response == null) {logger.info("链接超时！");}else {if(response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String pageContent = EntityUtils.toString(entity, "utf-8");
// System.out.println("**********************************************************"+pageContent+"**********************************************************");parseHandledTargetUrlPageContent(pageContent,handledTargetUrl);}}} catch (ClientProtocolException e) {logger.error(handledTargetUrl+"-解析异常-ClientProtocolException",e);} catch (IOException e) {logger.error(handledTargetUrl+"-解析异常-IOException",e);}finally {try {if(response != null) {response.close();}} catch (IOException e) {logger.error(handledTargetUrl+"-解析异常-IOException",e);}}logger.info("结束爬取blog：："+URL);}/*** 解析加工后的百度云地址内容* @param pageContent* @param handledTargetUrl 加工后的百度云地址*/private static void parseHandledTargetUrlPageContent(String pageContent, String handledTargetUrl) {Document doc = Jsoup.parse(pageContent);Elements aEles = doc.select(".fileinfo .panurl a");if(aEles.size() == 0) {logger.info("没有爬取到百度云地址");return;}String ahref = aEles.get(0).attr("href");
// System.out.println("**********************************************************"+ahref+"**********************************************************");getUserBaiduYunUrl(PROJECT_URL+ahref);}/*** 获取被处理过的百度云链接内容* @param handledBaiduYunUrl 被处理过的百度云链接*/private static void getUserBaiduYunUrl(String handledBaiduYunUrl) {logger.info("开始爬取blog：："+handledBaiduYunUrl);HttpGet httpGet = new HttpGet(handledBaiduYunUrl);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config );CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if(response == null) {logger.info("链接超时！");}else {if(response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String pageContent = EntityUtils.toString(entity, "utf-8");
// System.out.println("**********************************************************"+pageContent+"**********************************************************");parseHandledBaiduYunUrlPageContent(pageContent,handledBaiduYunUrl);}}} catch (ClientProtocolException e) {logger.error(handledBaiduYunUrl+"-解析异常-ClientProtocolException",e);} catch (IOException e) {logger.error(handledBaiduYunUrl+"-解析异常-IOException",e);}finally {try {if(response != null) {response.close();}} catch (IOException e) {logger.error(handledBaiduYunUrl+"-解析异常-IOException",e);}}logger.info("结束爬取blog：："+URL);}/*** 获取百度云链接* @param pageContent* @param handledBaiduYunUrl*/private static void parseHandledBaiduYunUrlPageContent(String pageContent, String handledBaiduYunUrl) {Document doc = Jsoup.parse(pageContent);Elements aEles = doc.select("#check-result-no a");if(aEles.size() == 0) {logger.info("没有爬取到百度云地址");return;}String ahref = aEles.get(0).attr("href");if((!ahref.contains("yun.baidu.com")) && (!ahref.contains("pan.baidu.com"))) return;logger.info("**********************************************************"+"爬取到第"+(++total)+"个目标对象："+ahref+"**********************************************************");
// System.out.println("爬取到第"+(++total)+"个目标对象："+ahref);String sql = "insert into `t_jsoup_article` values(null,?,?,null,now(),0,0,null,?,0,null)";try {PreparedStatement pst = con.prepareStatement(sql);
// pst.setObject(1, UUID.randomUUID().toString());pst.setObject(1, "测试类容");pst.setObject(2, ahref);pst.setObject(3, ahref);if(pst.executeUpdate() == 0) {logger.info("爬取链接插入数据库失败！！！");}else {cache.put(new net.sf.ehcache.Element(handledBaiduYunUrl, handledBaiduYunUrl));logger.info("爬取链接插入数据库成功！！！");}} catch (SQLException e) {logger.error(ahref+"-解析异常-SQLException",e);}}public static void start() {DbUtil dbUtil = new DbUtil();try {con = dbUtil.getCon();parseHomePage();} catch (Exception e) {logger.error("数据库创建失败",e);}}public static void main(String[] args) {start();}
}爬这里面的链接
爬想要的电影：
MovieCrawlerStarter.java
package com.zrh.crawler;import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.LinkedList;
import java.util.List;import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.apache.log4j.Logger;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;import com.zrh.util.DbUtil;
import com.zrh.util.PropertiesUtil;import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;
import net.sf.ehcache.Status;public class MovieCrawlerStarter {private static Logger logger = Logger.getLogger(MovieCrawlerStarter.class);private static String URL = "http://www.8gw.com/";private static String PROJECT_URL = "http://www.8gw.com";private static Connection con;private static CacheManager manager;private static Cache cache;private static CloseableHttpClient httpClient;private static long total = 0;/*** 等待爬取的52个链接的数据* * @return*/private static List<String> getUrls() {List<String> list = new LinkedList<String>();list.add("http://www.8gw.com/8gli/index8.html");for (int i = 2; i < 53; i++) {list.add("http://www.8gw.com/8gli/index8_" + i + ".html");}return list;}/*** 获取URL主体类容* * @param url*/private static void parseUrl(String url) {logger.info("开始爬取系列列表：：" + url);HttpGet httpGet = new HttpGet(url);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config);CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if (response == null) {logger.info("链接超时！");} else {if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String pageContent = EntityUtils.toString(entity, "GBK");parsePageContent(pageContent, url);}}} catch (ClientProtocolException e) {logger.error(url + "-解析异常-ClientProtocolException", e);} catch (IOException e) {logger.error(url + "-解析异常-IOException", e);} finally {try {if (response != null) {response.close();}} catch (IOException e) {logger.error(url + "-解析异常-IOException", e);}}logger.info("结束爬取系列列表：：" + url);}/*** 获取当前页中的具体影片的链接* @param pageContent* @param url*/private static void parsePageContent(String pageContent, String url) {
// System.out.println("****************" + url + "***********************");Document doc = Jsoup.parse(pageContent);Elements liEles = doc.select(".span_2_800 #list_con li");for (Element liEle : liEles) {String movieUrl = liEle.select(".info a").attr("href");if (null == movieUrl || "".equals(movieUrl)) {logger.info("该影片未内容，不再爬取插入数据库！");continue;}if(cache.get(movieUrl) != null) {logger.info("该数据已经被爬取到数据库中，数据库不再收录！");continue;}parseSingleMovieUrl(PROJECT_URL+movieUrl);}}/*** 解析单个影片链接* @param movieUrl*/private static void parseSingleMovieUrl(String movieUrl) {logger.info("开始爬取影片网页：" + movieUrl);httpClient = HttpClients.createDefault();HttpGet httpGet = new HttpGet(movieUrl);RequestConfig config = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(8000).build();httpGet.setConfig(config);CloseableHttpResponse response = null;try {response = httpClient.execute(httpGet);if (response == null) {logger.info(movieUrl + ":爬取无响应");return;}if (response.getStatusLine().getStatusCode() == 200) {HttpEntity entity = response.getEntity();String blogContent = EntityUtils.toString(entity, "GBK");parseSingleMovieContent(blogContent, movieUrl);}} catch (ClientProtocolException e) {logger.error(movieUrl + "-ClientProtocolException", e);} catch (IOException e) {logger.error(movieUrl + "-IOException", e);} finally {try {if (response != null) {response.close();}} catch (IOException e) {logger.error(movieUrl + "-IOException", e);}}logger.info("结束爬取影片网页：" + movieUrl);}/*** 解析页面主体类容（影片名字、影片描述、影片地址）* @param pageContent* @param movieUrl*/private static void parseSingleMovieContent(String pageContent, String movieUrl) {
// System.out.println("****************" + movieUrl + "***********************");Document doc = Jsoup.parse(pageContent);Elements divEles = doc.select(".wrapper .main .moviedteail");
// .wrapper .main .moviedteail .moviedteail_tt h1
// .wrapper .main .moviedteail .moviedteail_list .moviedteail_list_short a
// .wrapper .main .moviedteail .moviedteail_img img Elements h1Eles = divEles.select(".moviedteail_tt h1");if (h1Eles.size() == 0) {logger.info("影片名字为空，不插入数据库！");return;}String mname = h1Eles.get(0).html();Elements aEles = divEles.select(".moviedteail_list .moviedteail_list_short a");if (aEles.size() == 0) {logger.info("影片描述为空，不插入数据库！");return;}String mdesc = aEles.get(0).html();Elements imgEles = divEles.select(".moviedteail_img img");if (null == imgEles || "".equals(imgEles)) {logger.info("影片描述为空，不插入数据库！");return;}String mimg = imgEles.attr("src");String sql = "insert into movie(mname,mdesc,mimg,mlink) values(?,?,?,99)";try {System.out.println("****************" + mname + "***********************");System.out.println("****************" + mdesc + "***********************");System.out.println("****************" + mimg + "***********************");PreparedStatement pst = con.prepareStatement(sql);pst.setObject(1, mname);pst.setObject(2, mdesc);pst.setObject(3, mimg);if(pst.executeUpdate() == 0) {logger.info("爬取影片信息插入数据库失败");}else {cache.put(new net.sf.ehcache.Element(movieUrl, movieUrl));logger.info("爬取影片信息插入数据库成功");}} catch (SQLException e) {logger.error("数据异常-SQLException：",e);}}public static void main(String[] args) {manager = CacheManager.create(PropertiesUtil.getValue("ehcacheXmlPath"));cache = manager.getCache("8gli_movies");httpClient = HttpClients.createDefault();DbUtil dbUtil = new DbUtil();try {con = dbUtil.getCon();List<String> urls = getUrls();for (String url : urls) {try {parseUrl(url);} catch (Exception e) {
// urls.add(url);}} } catch (Exception e1) {logger.error("数据库连接势失败！");} finally {try {if (httpClient != null) {httpClient.close();}if (con != null) {con.close();}} catch (IOException e) {logger.error("网络连接关闭异常-IOException：",e);} catch (SQLException e) {logger.error("数据关闭异常-SQLException：",e);}}// 最终将数据缓存到硬盘中if (cache.getStatus() == Status.STATUS_ALIVE) {cache.flush();}manager.shutdown();}}
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