byte陣列和圖片轉換
阿新 • • 發佈:2019-02-20
package com.qdb.bfs.taobao.test;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import javax.imageio.ImageIO;
public class JPG {
public static byte[] image2Bytes(String imagePath) throws Exception {
BufferedImage bu=ImageIO.read(new File(imagePath));
ByteArrayOutputStream imageStream = new ByteArrayOutputStream();
try {
boolean resultWrite = ImageIO.write(bu, "jpg", imageStream);
} catch (Exception e) {
e.printStackTrace();
}
imageStream.flush();
byte[] tagInfo = imageStream.toByteArray();
return tagInfo;
}
public static void main(String[] args) throws Exception {
byte[]info=image2Bytes("D:/a.jpg");
System.out.println(info.length);
ByteArrayInputStream imageStream = new ByteArrayInputStream(info);
BufferedImage image=ImageIO.read(imageStream);
String newFilePath="d:/許女子.jpg";
ImageIO.write(image, "jpg", new File(newFilePath));
}
}
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import javax.imageio.ImageIO;
public class JPG {
public static byte[] image2Bytes(String imagePath) throws Exception {
BufferedImage bu=ImageIO.read(new File(imagePath));
ByteArrayOutputStream imageStream = new ByteArrayOutputStream();
try {
boolean resultWrite = ImageIO.write(bu, "jpg", imageStream);
} catch (Exception e) {
e.printStackTrace();
}
imageStream.flush();
byte[] tagInfo = imageStream.toByteArray();
return tagInfo;
}
public static void main(String[] args) throws Exception {
byte[]info=image2Bytes("D:/a.jpg");
System.out.println(info.length);
ByteArrayInputStream imageStream = new ByteArrayInputStream(info);
BufferedImage image=ImageIO.read(imageStream);
String newFilePath="d:/許女子.jpg";
ImageIO.write(image, "jpg", new File(newFilePath));
}
}