Webmagic爬虫類の例

         <dependency>
            <groupId>us.codecraftgroupId>
            <artifactId>webmagic-coreartifactId>
            <version>0.7.3version>
        dependency>
        <dependency>
            <groupId>us.codecraftgroupId>
            <artifactId>webmagic-extensionartifactId>
            <version>0.7.3version>
        dependency>

/**
 *
 * @Author zhengyingjun
 * @Description ：demo   
 *   ：     webmagic  
 * @Date 2019/4/16 21:39
 **/


/**    pageprocessor  
 *
 */
public class Start implements PageProcessor {

    public static void main(String[] args) {
        Spider.create(new Start()).addUrl("http://blog.sina.com.cn/s/articlelist_1487828712_0_1.html")
                .run();
    }
    /**
     *          ，    、    、     
     */
    private Site site = Site.me()
            .setDomain("blog.sina.com.cn")
            .setSleepTime(3000)
            .setUserAgent(
                    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.65 Safari/537.31");

    /**
     * d    
     */
    public static final String URL_LIST = "http://blog\\.sina\\.com\\.cn/s/articlelist_1487828712_0_\\d+\\.html";
    /**
     *          “http://blog.sina.com.cn/s/blog_58ae76e80100g8au.html”，  blog_          
     */
    public static final String URL_POST = "http://blog\\.sina\\.com\\.cn/s/blog_\\w+\\.html";

    /**
     *      
     * @param page
     */
    @Override
    public void process(Page page) {
        //   
        if (page.getUrl().regex(URL_LIST).match()) {
            page.addTargetRequests(page.getHtml().xpath("//div[@class=\"articleList\"]").links().regex(URL_POST).all());
            //            
            page.addTargetRequests(page.getHtml().links().regex(URL_LIST).all());
            //   
        } else {
            //  
            page.putField("title", page.getHtml().xpath("//div[@class='articalTitle']/h2"));
            //  
            page.putField("content", page.getHtml().xpath("//div[@id='articlebody']//div[@class='articalContent']"));
            //  
            page.putField("date",
                    page.getHtml().xpath("//div[@id='articlebody']//span[@class='time SG_txtc']").regex("\\((.*)\\)"));
        }
    }
    @Override
    public Site getSite() {
        return site;
    }
}