我尝试从url获取图片然后保存到本地,但是图片显示不正常,而且貌似图片大小比原图会大了一点,这是为什么?import java.io.BufferedReader;import java.io.File;import java.io.FileOutputStream;import java.io.FileReader;import java.io.IOException;import java.io.InputStream;import java.net.URL;import java.net.URLConnection;public class DownloadImage { public static void main(String[] args){ BufferedReader bufferedReader = null; FileOutputStream fileOutputStream = null; URL imageUrl = null; String str = null; URLConnection urlConnection = null; InputStream urlInputStream = null; byte[] byteArray = new byte[1024]; File imageFile = null; try { bufferedReader = new BufferedReader(new FileReader("resources/imageURL")); //这个文件的内容是url地址 while((str = bufferedReader.readLine()) != null){ imageUrl = new URL(str); urlConnection = imageUrl.openConnection(); urlConnection.connect(); urlInputStream = urlConnection.getInputStream(); imageFile = new File("resources/image/" + str.substring(str.lastIndexOf("/")+1)); if(!imageFile.exists()) imageFile.createNewFile(); fileOutputStream = new FileOutputStream(imageFile); while(urlInputStream.read(byteArray) != -1){ fileOutputStream.write(byteArray); } fileOutputStream.close(); urlInputStream.close(); } } catch (IOException e) { e.printStackTrace(); }finally{ try { bufferedReader.close(); } catch (IOException e) { e.printStackTrace(); } System.out.println("Done!"); } }}
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