配列リストに格納されているデータを、Excelでjavaを使用して挿入する

Question

これは、Excelの表形式でクロールされたデータを保存するためにExcelシートを作成しようとしている間に、データがURLからフェッチされ、このデータは `

import java.util.ArrayList; 

import com.webscrap4j.WebScrap; 
import com.webscrap4j.WebScrapException; 

import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.FileReader; 
import java.io.IOException; 
import java.util.ArrayList; 
import java.util.Collections; 
import java.util.Iterator; 
import java.util.List; 
import java.util.Scanner; 

import org.apache.poi.hssf.usermodel.HSSFCell; 
import org.apache.poi.hssf.usermodel.HSSFRichTextString; 
import org.apache.poi.hssf.usermodel.HSSFRow; 
import org.apache.poi.hssf.usermodel.HSSFSheet; 
import org.apache.poi.hssf.usermodel.HSSFWorkbook; 
import org.apache.poi.openxml4j.exceptions.InvalidFormatException; 
import org.apache.poi.ss.usermodel.Cell; 
import org.apache.poi.ss.usermodel.CreationHelper; 
import org.apache.poi.ss.usermodel.Row; 
import org.apache.poi.ss.usermodel.Sheet; 
import org.apache.poi.ss.usermodel.Workbook; 
import org.apache.poi.ss.usermodel.WorkbookFactory; 
import org.apache.poi.xssf.usermodel.XSSFTable; 


public class crawl 
{ 
    public static void main(String[] args) throws IOException { 



     ArrayList<String> al = new ArrayList<String>(); 
     ArrayList<String> bl = new ArrayList<String>(); 
     ArrayList<String> cl = new ArrayList<String>(); 
     WebScrap ws = new WebScrap(); 

     ws.setUrl("https://www.pepperfry.com/hardware-electricals-power-storage-ups-inverters.html"); 
     try 


     { 

      ws.startWebScrap(); 
      //al = ws.getImageTagData("img", "title"); 
      al = ws.getSingleHTMLScriptData("<div class='card-body-title hidden-txt'>", "</div>"); 
      bl = ws.getSingleHTMLScriptData("<span class='strike'>", "</span>"); 
      cl = ws.getSingleHTMLScriptData("<p class='card-body-price txt-red'>", "</p>"); 




    /*  FileOutputStream fos=new FileOutputStream("/Users/parthpatil/Documents/11.xls"); 
      HSSFWorkbook workBook = new HSSFWorkbook(); 

      HSSFSheet Sheet = workBook.createSheet("products"); 
      //XSSFTable my_table = Sheet.createTable(); 
      HSSFRow row; 
      HSSFCell cell; 
      CreationHelper helper = workBook.getCreationHelper(); 


      Row header = Sheet.createRow(0); 
      header.createCell(0).setCellValue("Product Name"); 
      header.createCell(1).setCellValue("Product Price"); 
      header.createCell(2).setCellValue("Product MRP"); 



       for(int i=0;i<al.size();i++){ 
        row = Sheet.createRow((short) i); 
       cell = row.createCell(i); 
       System.out.println(al.get(i)); 
       cell.setCellValue(al.get(i).toString()); 
       } 
       System.out.println("Done"); 
       workBook.write(fos); 

       */ 

      for (String adata : al) 
      { 

       System.out.println("the product are:- " + adata); 

      } 
      for (String bdata : bl) 
      { 

       System.out.println("the MRp are:- " + bdata); 

      } 
      for (String cdata : cl) 
      { 

       System.out.println("the selling price is:- " + cdata); 

      } 

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



} 


} 

Answer 1

配列リストに保存する必要があるあなたのコードグローバルここで、それが唯一のいくつかの小さなミスがあり訂正されたが、それはあなたのコードで行うことができる方法である：

// Use the try-with-resource statement to close all the resources properly 
try (HSSFWorkbook workBook = new HSSFWorkbook(); 
    FileOutputStream fos = new FileOutputStream("/Users/parthpatil/Documents/11.xls")) { 

    // Create the Sheet 
    HSSFSheet Sheet = workBook.createSheet("products"); 

    // Create the first row corresponding to the header 
    Row header = Sheet.createRow(0); 
    header.createCell(0).setCellValue("Product Name"); 
    header.createCell(1).setCellValue("Product Price"); 
    header.createCell(2).setCellValue("Product MRP"); 

    // Ensure that all the List have the same size otherwise throw an exception 
    if (al.size() != bl.size() || al.size() != cl.size()) 
     throw new IllegalStateException("Some data is missing"); 

    // Iterate over all the list an create the rows of data 
    for(int i = 0; i < al.size(); i++){ 
     // Create the current starting from 1 to al.size() 
     HSSFRow row = Sheet.createRow((short) i + 1); 
     // Cell of the Product Name 
     row.createCell(0).setCellValue(al.get(i)); 
     // Cell of the Product Price 
     row.createCell(1).setCellValue(cl.get(i)); 
     // Cell of the Product MRP 
     row.createCell(2).setCellValue(bl.get(i)); 
    } 
    // Write the result into the file 
    workBook.write(fos); 
}