java 通过url下载图片-蒲公英云

java 通过url下载图片

Dear 丶 2022-03-31 04:26 393阅读 0赞

private static  String Download(String urlList) {
        URL url = null;
        String filepath="";
        try {
            url = new URL(urlList);
            DataInputStream dataInputStream = new DataInputStream(url.openStream());
            String newpaht =path+getCurrentDateTime();//+"\\"+urlList.substring(urlList.lastIndexOf("/")+1, urlList.length());//+".jpg";
            try{
                File file = new File(newpaht);
                if(!file.exists()){
                    file.mkdirs();                    
                }
            }catch(Exception ex){
                System.out.println(ex);
            }
            filepath=newpaht+"\\"+urlList.substring(urlList.lastIndexOf("/")+1, urlList.length())+".jpg";
            FileOutputStream fileOutputStream = new FileOutputStream(new File(filepath));
            ByteArrayOutputStream output = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int length;
            while ((length = dataInputStream.read(buffer)) > 0) {
                output.write(buffer, 0, length);
            }
            fileOutputStream.write(output.toByteArray());
            dataInputStream.close();
            fileOutputStream.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return filepath;
    }

测试

public static void main(String[] args) {
            String url = "https://img.zcool.cn/community/01f9ea56e282836ac72531cbe0233b.jpg";
            Download(url);
        }

引用

import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;