ピクチャーurlによって直接にピクチャーbaseを獲得します。

ネットでたくさん見ましたが、写真urlによって写真を取得するのは面倒くさいです。
下のこれはとても簡単です。下のこのツール類のcopyをベースに戻すだけでいいです。

package cn.com.zcits.exchange.modules.utils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class FileUtil {
     
    private static final Logger LOGGER = LoggerFactory.getLogger(FileUtil.class);
    /**
     * @Function:           Base64   
     * @param imgSrc -         
     */
    public static String getImageBase64StrFromUrl(String imgSrc) throws Exception{
     
        URL url = null;
        InputStream is = null;
        ByteArrayOutputStream outStream = null;
        HttpURLConnection httpUrl = null;
        try{
     
            url = new URL(imgSrc);
            httpUrl = (HttpURLConnection) url.openConnection();
            httpUrl.setRequestMethod("GET");
            httpUrl.setConnectTimeout(30 * 1000);
            httpUrl.connect();
            httpUrl.getInputStream();
            is = httpUrl.getInputStream();
            outStream = new ByteArrayOutputStream();
            //    Buffer   
            byte[] buffer = new byte[2048];
            //          ，   -1，        
            int len = 0;
            //        buffer        
            while( (len=is.read(buffer)) != -1 ){
     
                //     buffer     ，              ，len       
                outStream.write(buffer, 0, len);
            }
            //      Base64  
            return java.util.Base64.getEncoder().encodeToString(outStream.toByteArray());
        }catch (Exception e) {
     
            throw new Exception(e);
        }finally{
     
            if(is != null) {
     
                try {
     is.close(); } catch (IOException e) {
     e.printStackTrace(); }
            }
            if(outStream != null) {
     
                try {
     outStream.close();} catch (IOException e) {
     e.printStackTrace();}
            }
            if(httpUrl != null){
      httpUrl.disconnect();}
        }
    }

    /**
     *               - GET  
     * @param strUrl
     * @return
     */
    public static byte[] getImageFromNetByUrl(String strUrl) throws Exception {
     
         try {
     
            URL url = new URL(strUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(10 * 1000);
            //            
            InputStream inStream = conn.getInputStream();
            //           
            byte[] btImg = readInputStream(inStream);
            return btImg;
        } catch (Exception e) {
     
            e.printStackTrace();
            throw  new Exception(e.getMessage());
        }
    }

    /**
     * @Function:          
     * @param inStream -    
     * @throws IOException
     */
    private static byte[] readInputStream(InputStream inStream) throws IOException {
     
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = 0;
        while ((len = inStream.read(buffer)) != -1) {
     
            outStream.write(buffer, 0, len);
        }
        inStream.close();
        return outStream.toByteArray();
    }
}