java经过指定的URL获取图片信息(长宽)

时间 2019-11-10

标签 java 经过指定 url 获取图片信息长宽栏目 Java 繁體版

原文原文链接

解决思路：java

先要根据URL获取到图片，而后在根据获得的图片进行操做。url

须要的：spa

import java.net.URL;.net

import java.awt.image.BufferedImage;orm

import java.io.InputStream;图片

import javax.imageio.ImageIO;ci

1：根据URL获取图片：get

private BufferedImage getBufferedImage(String imgUrl) {
       URL url = null;
   InputStream is = null;
   BufferedImage img = null;
   try {
   url = new URL(imgUrl);
   is = url.openStream();
   img = ImageIO.read(is);
   } catch (MalformedURLException e) {
   e.printStackTrace();
   } catch (IOException e) {
   e.printStackTrace();
   } finally {

   try {
   is.close();
   } catch (IOException e) {
   e.printStackTrace();
   }
   }
   return img;
   }

2：将获取到的图片进行操做：io

Map<String,String> map = new HashMap<String, String>(); BufferedImage image=getBufferedImage(imgUrl); if (image!=null) { /*System.out.println("图片高度:"+image.getHeight()); System.out.println("图片宽度:"+image.getWidth()); */ map.put("Height", String.valueOf(image.getHeight())); map.put("Width", String.valueOf(image.getWidth())); } else { System.out.println("图片不存在！"); } return map;