插入数据存储在Excel中使用java的数组列表

它已经有一段时间了，我试图创build一个Excel表格来存储表格格式的抓取数据在Excel中，数据从一个URL中获取并存储在一个数组列表中，这些数据需要存储在数组列表中`

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

你的代码是全局正确的，它只有一些小的错误，下面是如何使用你的代码：

 // 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); }