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 block
e.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/newarticles
private 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 a
Elements 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URL
String 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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