java实现下载网络图片到本地，附完整Java代码

java实现下载网络图片到本地，直接上代码

package com.example;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;public class DownloadPictureTest {public static void main(String[] args) throws Exception {String strs[]={"https://img2.baidu.com/it/u=2529034190,3254601958&fm=253&fmt=auto&app=120&f=JPEG?w=798&h=500"};for(int i=0;i<strs.length;i++){String durl=strs[i];String fileName=i+".jpg";download( durl, "E:\\file\\"+fileName);System.out.println(i);}}public static void download(String durl,String fileName) throws Exception {//定义一个URL对象，就是你想下载的图片的URL地址URL url = new URL(durl);//打开连接HttpURLConnection conn = (HttpURLConnection) url.openConnection();//设置请求方式为"GET"conn.setRequestMethod("GET");//超时响应时间为10秒conn.setConnectTimeout(10 * 1000);//通过输入流获取图片数据InputStream is = conn.getInputStream();//得到图片的二进制数据，以二进制封装得到数据，具有通用性byte[] data = readInputStream(is);//创建一个文件对象用来保存图片，默认保存当前工程根目录，起名叫Copy.jpgFile imageFile = new File(fileName);//创建输出流FileOutputStream outStream = new FileOutputStream(imageFile);//写入数据outStream.write(data);//关闭输出流，释放资源outStream.close();}public static byte[] readInputStream(InputStream inStream) throws Exception {ByteArrayOutputStream outStream = new ByteArrayOutputStream();//创建一个Buffer字符串byte[] buffer = new byte[6024];//每次读取的字符串长度，如果为-1，代表全部读取完毕int len;//使用一个输入流从buffer里把数据读取出来while ((len = inStream.read(buffer)) != -1) {//用输出流往buffer里写入数据，中间参数代表从哪个位置开始读，len代表读取的长度outStream.write(buffer, 0, len);}//关闭输入流inStream.close();//把outStream里的数据写入内存return outStream.toByteArray();}}