HttpsURLConnection HttpURLConnection下载图片

Posted 2021-05-20 泡椒炒甜瓜

 

package com.sunward.car.util;


import javax.net.ssl.HttpsURLConnection;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

    /**
     * 图片下载
     *
     * @author chong.zuo
     * @date 2021/5/15  09:18
     */
    public class downimage {

        public static void main(String[] args) throws Exception {

            URL url = new URL("https://ip:port/pic?9dd639268-0do541l*14e622--40ef4798c9152i7b5*=2d6i6s1*=idp4*=pd*m5i1t=1e2264806i8s=*3az899140pi-39o=3cf=9i074&AccessKeyId=pIEGwKgek/eclGpn&Expires=1621129268&Signature=wHmH02mJzQanEoBhL1h94Lr6DhQ="); // openapi.alipay.com
            FileOutputStream fos = null;

            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            // 新增部分
            conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
            conn.connect();
            fos = new FileOutputStream("E:\\\\haha.jpg");

            BufferedInputStream bis =new BufferedInputStream(conn.getInputStream());
            byte[] data = new byte[2048];
            int len = 0;
            int sum = 0;
            while ((len = bis.read(data)) != -1) {
                fos.write(data, 0, len);
            }
            fos.flush();
            fos.close();
            bis.close();
            conn.disconnect();
        }



        public void saveToFile(String destUrl) {
            FileOutputStream fos = null;
            BufferedInputStream bis = null;
            HttpURLConnection httpUrl = null;
            URL url = null;
            int BUFFER_SIZE = 1024;
            byte[] buf = new byte[BUFFER_SIZE];
            int size = 0;
            try {
                url = new URL(destUrl);
                httpUrl = (HttpURLConnection) url.openConnection();
                httpUrl.connect();
                bis = new BufferedInputStream(httpUrl.getInputStream());
                fos = new FileOutputStream("E:\\\\haha.jpg");
                while ((size = bis.read(buf)) != -1) {
                    fos.write(buf, 0, size);
                }
                fos.flush();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (ClassCastException e) {
                e.printStackTrace();
            } finally {
                try {
                    fos.close();
                    bis.close();
                    httpUrl.disconnect();
                } catch (IOException e) {
                    e.printStackTrace();
                } catch (NullPointerException e) {
                    e.printStackTrace();
                }
            }
        }

   /* public static void main(String[] args) {
        downimage dw=new downimage();
        dw.saveToFile("https://172.16.9.76:6114/pic?9dd639268-0do541l*44e602--40ef4798c9152i7b5*=3d3i7s1*=idp2*=pd*m3i1t=0e2169883i4s=*3az639142pi-39o=3cf=9i074&AccessKeyId=pIEGwKgek/eclGpn&Expires=1620977838&Signature=bQtjVgUSVrTCJ98PQNODKgSkWvg=");
        //dw.saveToFile("http://192.168.126.110/group1/M00/00/00/wKh-bmCYpXCAah8aAA5Qo-gsYwM044.png");
    }*/


}

 

public class TrustAnyHostnameVerifier implements HostnameVerifier {
    @Override
    public boolean verify(String s, SSLSession sslSession) {

        return true;
    }

}