java 通过url下载图片

Dear 丶 2022-03-31 04:26 286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;