Jsoup : How to parse multiple HTML files from local drive?

问题

I've got multiple HTML files on my hdd to parse with Jsoup. I've been able to parse one file but not multiple files. I would like to parse all the files of a folder.

I wrote this code wich extracts text (within certain ids) from a html file (named "file.htm" in the folder "C:/html") :

package jsouptest;

import java.io.File;
import java.io.IOException;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

public class Main {

    public static void main(String[] args) {
        Document doc;

        try{

            File input = new File("C:/html/file.htm");

            doc = Jsoup.parse(input, "UTF-8", "");


            Elements ids = doc.select("div[id^=desk] p");

            for (Element id : ids){

                System.out.println("\n"+id.text());

            }

        }catch(IOException e){

        }

    }

}

How to apply this code to all files that are in the folder "C:/html" ? Thanks

回答1:

Extract the code to parse html in a method; list the content of your directory and call parse for each file

   File input = new File("C:/html");
   File[] st = input.listFiles();
   for (int i = 0; i < st.length; i++) {
          if(st[i].isFile()){//other condition like name ends in html
                 parse(st[i]);
          }
   }

so your code should look like this:

import java.io.File;
import java.io.IOException;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

public class Main {

    public static void main(String[] args) {
        File input = new File("C:/html");
        File[] st = input.listFiles();
        for (int i = 0; i < st.length; i++) {
            if(st[i].isFile()){//other condition like name ends in html
                parse(st[i]);
            }
        }

    }

    private static void parse(File input ) {
        Document doc;

        try{

            doc = Jsoup.parse(input, "UTF-8", "");


            Elements ids = doc.select("div[id^=desk] p");

            for (Element id : ids){

                System.out.println("\n"+id.text());

            }

        }catch(IOException e){

        }
    }
}

回答2:

I have written program to read folder and inner folder for given path and write results into csv

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;

public class fixingCode {

    public static void main(String[] args) {
        FileWriter writer = null;

        System.out.println("--------------------------Program started--------------------------");

        File input = new File(
                "C:\\My Web Sites\\\\library\\math");//reading file from parent folder 

        try {
            writer = new FileWriter("c:\\Temp\\results.csv");//writing file on path
            Process(input, writer);

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {

            try {

                writer.flush();
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        //

        System.out.println("--------------------------Program End--------------------------");
    }

    static int spc_count = -1;

    static void Process(File aFile, FileWriter writer) {
        spc_count++;
        Document doc = null;
        String spcs = "";

        try {

            //
            for (int i = 0; i < spc_count; i++)
                spcs += " ";
            if (aFile.isFile()) {
                System.out.println(spcs + "[FILE] " + aFile.getName());
            } else if (aFile.isDirectory()) {
                //
                System.out.println(spcs + "[DIR] " + aFile.getName());
                //
                File[] listOfFiles = aFile.listFiles();
                //
                File[] st = listOfFiles;

                //
                for (int i = 0; i < st.length; i++) {
                    if (st[i].isFile()) {// other condition like name
                                            // ends in

                        doc = Jsoup.parse(st[i], null);

                        // get page title
                        String title = doc.title();
                        System.out.println("title : " + "[" + i + "]" + title);
                        //
                        String ownText = doc.body().ownText();
                        String text = doc.body().text();
                        //
                        // System.out.println("ownText" + ownText + "\n");
                        System.out.println("text" + text);
                        //

                        writer.append("title : " + "[" + i + "]");
                        writer.append(',');
                        writer.append(title);
                        writer.append('\n');

                        /*
                         * writer.append("ownText"); writer.append(',');
                         * writer.append(ownText); writer.append('\n');
                         */

                        writer.append("text : " + "[" + i + "]");
                        writer.append(',');
                        writer.append(text);
                        writer.append('\n');
                    }
                    //
                    //
                    if (listOfFiles != null) {
                        //
                        for (int j = 0; j < listOfFiles.length; j++)
                            Process(listOfFiles[j], writer);
                    } else {
                        System.out.println(spcs + " [ACCESS DENIED]");
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        spc_count--;
    }

}

来源：https://stackoverflow.com/questions/26407402/jsoup-how-to-parse-multiple-html-files-from-local-drive