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README
Apache-2.0

安装步骤

  • git clone https://gitee.com/1967988842/Spider2.0.git
  • 使用eclipse导入项目
  • 将依赖包加入到BuildPath中
  • 直接运行SpiderApplication里面的main方法就是提供的抓取携程网站北京地区的1到20页的酒店信息

依赖库

  • JCEF
  • Jsoup
  • apache-commons-*类库

编译JCEF(想要编译完整文件可以直接私信我)

  • 准备环境

Windows10 64bit操作系统,Visio Studio 2017(安装c++组件),Java8 64bit,Python2.7,cmake3.11.3-win

  • 下载代码到指定目录

git clone https://bitbucket.org/chromiumembedded/java-cef.git src

  • 创建并进入指定文件夹

mkdir jcef_build && cd jcef_build

  • 使用cmake创建VS工程

cmake -G "Visual Studio 15 Win64" ..

  • 网络错误

有可能会因为网络原因出现上边的下载错误 把gs://chromium-clang-format/6ddedd571c56b8c184f30a3c1fc36984e8c10ccd
改为https://storage.googleapis.com/chromium-clang-format/6ddedd571c56b8c184f30a3c1fc36984e8c10ccd
然后使用浏览器下载,下载完成后再把文件名改为clang-format.exe放到tools/buildtools/win目录

  • 使用VS2017打开jcef_build文件夹中的jcef.sln

  • 修改解决方案类型

在VS2017中选择生成->配置管理器 ->活动解决方案配置,修改为"Releas

  • 生成解决方案

在VS2017中选择生成->创建解决方案

  • 进入到tools目录下执行命令编译Java文件

compile.bat win64

  • 进入到tools目录下执行命令测试是否编译成功

run.bat win64 Release detailed

  • 进入到tools目录下执行命令创建Jar包和打包DLL文件

make_distrib.bat win64

在eclipse中使用使用

  • 参考项目中lib包下的文件,可以将新打包的文件拷贝到lib目录下。并将Jar包添加到项目的Build Pathh中
  • 修改common包下Constant类中的DLLPATH值

修改为当前项目的或者是打包完成的目录地址:D:/Products/smallSpider/new/src/binary_distrib/win64/bin/lib/win

  • 在JCEF中提供了两个例子simple(java/simple/MainFrame.java)或detailed(java/detailed/MainFrame.java)。可以查看项目的test包下面查看并且运行

关于爬虫

此类爬虫局限性特别大。对于实在无法抓取的网页数据。例如Ajax请求参数复杂,无法通过httpclient获取json数据;或者需要加载复杂js,无法通过使用phantomjs等无头浏览器加载页面;又或者使用selenium嫌弃太慢。 那么此项目可能会为您提供帮助

警告

此项目中抓取携程酒店数据的例子请谨慎使用

代码解释

  • SpiderApplication.java是程序的入口。创建浏览器实例并且设置起始页和结束页进行抓取。
//新建一个浏览器
UrlBrowserInstance browserInstanceFirst = new UrlBrowserInstance(client, osrEnabledArg, transparentPaintingEnabledArg);
//设置起始页和结束页开始抓取
browserInstanceFirst.createBrowserAndCrawler(1L, 20L);
  • common包

队列和一些常量以及共用方法,通常情况下可以多关注一下队列类就足够了

  • controller包

实现了浏览器接口。一般来说列表页跳转下一页有两种方式,一种是URL改变。一种是页面不重新刷新,使用Ajax加载数据。此部分代码在impl包下面,需要根据网站进行修改。parase包下是两种处理页面方式,访问页面之后直接保存页面HTML或者直接进行处理生成csv文件或者保存数据库。使用Jsoup解析Html文档即可。非常简单

//浏览器实例需要实现接口方法,可以创建多个浏览器实例
public interface BrowserInstance {
	void createBrowserAndCrawler(Long startIndex, Long stopIndex);
}
//下载Html页面示例代码
public class DownloadHtmlDocument implements CefStringVisitor {
	private String url;
	public DownloadHtmlDocument(String url) {
		this.url = url;
	}
	@Override
	public void visit(String string) {
		StringBuilder savePath = new StringBuilder("/home/ctrip/");
		String index = StringUtils.remove(url, Constant.CTRIPHOTELLISTUTLTEMP);
		savePath.append(index).append(".txt");
		File file = new File(savePath.toString());
		try {
			if (!file.exists()) {
				FileUtils.writeStringToFile(file, string, "UTF-8", false);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
//解析Html页面示例代码(未完成)
public class ParsingHtmlDocument implements CefStringVisitor {
	private Map<String, String> xpathList;
	public ParsingHtmlDocument(Map<String, String> xpathList) {
		this.xpathList = xpathList;
	}
	@Override
	public void visit(String string) {
		Document htmlDocument = Jsoup.parse(string);
		System.out.println(htmlDocument);
		System.out.println(xpathList);
	}
}
  • core包

核心包,其中的类以后会打入到Jar包中。与业务无关

  • ui包

使用swing制作的浏览器Frame。几乎照搬JCEF提供的detail例子

结果展示

输入图片说明

输入图片说明

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简介

使用JCEF(chromium内核)开发的抓取数据浏览器,可以用来制作浏览器,也可以用来制作爬虫。 展开 收起
Java 等 3 种语言
Apache-2.0
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