版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/hujingshuang/article/details/78916509
前言
感觉写爬虫代码是学习JAVA最合适不过的入门项目了,于是在学习的过程中就爬了一下链家二手房和链家经纪人的数据,就有了这篇文章。
工具
- IDEA + Maven + Httpclient + Jsoup + MySQL
说明
- Maven:用来管理项目非常的方便;
- Httpclient:抓取链家网页的HTML源码;
- Jsoup:对HTML进行数据解析,配合正则表达式;
- MySQL:将数据存储到数据库,方便查询。
流程
配置
下面是我项目的pom.xml文件内容:
<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>cn.jensonhu</groupId>
<artifactId>WebCrawler</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>WebCrawler</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.jsoup/jsoup -->
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.11.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.10.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.44</version>
</dependency>
</dependencies>
</project>
还有一点要说明的是:链家网对爬虫非常的友好,几乎没有反爬虫,所以放心大胆的去爬数据吧,不会封IP的。
在后面的文章中将详细介绍如何获取网页,并提取数据等。