1.爬虫解析字符串2.提取文档内容

package day02;
import org.apache.commons.io.FileUtils;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
public class jianxizfc {
    
//    <!--jsoup解析工具所需依赖-->
//        <dependency>
//            <groupId>org.jsoup</groupId>
//            <artifactId>jsoup</artifactId>
//            <version>1.10.3</version>
//        </dependency>
//
//        <dependency>
//            <groupId>junit</groupId>
//            <artifactId>junit</artifactId>
//            <version>4.12</version>
//            <scope>test</scope>
//        </dependency>
//
//        <dependency>
//            <groupId>commons-io</groupId>
//            <artifactId>commons-io</artifactId>
//            <version>2.6</version>
//        </dependency>
//
//        <dependency>
//            <groupId>org.apache.commons</groupId>
//            <artifactId>commons-lang3</artifactId>
//            <version>3.7</version>
//        </dependency>
//

   @Test
   public void qidong() throws IOException {
       //使用工具类读取文件，获取字符串
       String s = FileUtils.readFileToString(new File("C:\\Users\\LX\\Desktop\\新建文本文档.txt"), "utf-8");
       //解析字符串
       Document doc = Jsoup.parse(s);
      //按照标签筛选需要的内容
       String title = doc.getElementsByTag("title").first().text();
       System.out.println(title);
}

    @Test
    public void qidong1() throws IOException {
        //按照文件解析文件字符
        Document parse = Jsoup.parse(new File("C:\\Users\\LX\\Desktop\\新建文本文档.txt"), "utf-8");
        //解析字符串
        String title = parse.getElementsByTag( "title").first().text();
        //按照标签筛选需要的内容
        System.out.println(title);
    }
}