从网络上获取图片，并写入excel文件

package com.weChat.utils;

import com.manage.utils.DateUtil;
import com.manage.utils.MD5Util;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.wicket.common.utils.DateUtils;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

public class UrlImg {

    /**
     * @param url      网络图片地址
     * @param filePath 保存图片的父级文件夹路径
     * @return
     */
    public String downloadImgByUrl(String url, String filePath) {
        FileOutputStream fos = null;
      /*  BufferedInputStream bis = null;*/
        HttpURLConnection httpUrl = null;
        URL netUrl = null;
        String fileName = "";
        try {
            netUrl = new URL(url);
            httpUrl = (HttpURLConnection) netUrl.openConnection();
            httpUrl.connect();
            //bis = new BufferedInputStream(httpUrl.getInputStream());

            ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();

            BufferedImage bufferImg = ImageIO.read(httpUrl.getInputStream());
            ImageIO.write(bufferImg, "jpg", byteArrayOut);

            int width = bufferImg.getWidth();//原始宽度
            int height = bufferImg.getHeight();//原始高度

            System.out.println("图片的高度:" + height + "\t 宽度:" + width);

            HSSFWorkbook workbook = new HSSFWorkbook();
            // 生成一个表格
            HSSFSheet sheet = workbook.createSheet("图片导出测试");
            // 设置A列的宽度为30*256；
            sheet.setColumnWidth(0, 200 * 256);
            Row row = sheet.createRow(0);
            row.setHeight((short) (height / 2 * 100));

            // 画图的顶级管理器，一个sheet只能获取一个（一定要注意这点）
            HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
            // anchor主要用于设置图片的属性
            HSSFClientAnchor anchor = new HSSFClientAnchor(0, 0, 1023, 255, (short) 0, 0, (short) 6, 16 );
            anchor.setAnchorType(3);
            // 插入图片
            patriarch.createPicture(anchor, workbook.addPicture(byteArrayOut.toByteArray(), HSSFWorkbook.PICTURE_TYPE_JPEG));

            String time = DateUtils.getTimeRandom("yyMMddhhmmss");
            fileName = MD5Util.MD5(time) + ".xls";//图片的类型，我默认设定为jpg格式；可以自定义文件类型的，网络图片地址应该会有图片类型的，这里就需要你自己去看一下网络图片地址的规则了

           filePath = filePath + "/" + fileName;
            File outFile = new File(filePath);
            outFile.getParentFile().mkdirs();
            if (!outFile.exists()) {
                outFile.createNewFile();
            }
            fos = new FileOutputStream(outFile);
            // 写入excel文件
            workbook.write(fos);

            fos.close();
          /*  byte[] buffer = new byte[3042];
            int bytesRead = 0;

            while ((bytesRead = workbook.read!= -1) {
                fos.write(buffer, 0, bytesRead);
            }*/

        } catch (Exception e) {

            e.getMessage();
            //System.out.print("请确认网络图片是否正确！");
        }
        return fileName;
    }

    public static void main(String[] args) {

        new UrlImg().downloadImgByUrl("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1523422575372&di=1ae9823657534b984bce8f3d36b579a1&imgtype=0&src=http%3A%2F%2Fi2.hdslb.com%2Fbfs%2Farchive%2F4516522608648333f98851fb66fcc5432eee9faa.jpg", "D:\\二维码");
    }
}