實現圖片上傳格式修改和大小修改方法一

jsp中編寫的java代碼實現的該功能，用的時fileupload插件實現的上傳

<span style="font-size:18px;"><%@page import="com.sun.image.codec.jpeg.JPEGImageEncoder"%>
<%@page import="com.sun.image.codec.jpeg.JPEGCodec"%>
<%@page import="java.awt.Image"%>
<%@page import="javax.imageio.ImageIO"%>
<%@page import="java.awt.image.BufferedImage"%></span>

實現代碼

<span style="font-size:18px;">name = courseId;
int width = 165;//圖片的寬度
int height = 122;//圖片的高度
BufferedImage bi = ImageIO.read( item.getInputStream());
BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(bi.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);
FileOutputStream fos = new FileOutputStream(new File(savePath + name +".jpg"));
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(fos);
encoder.encode(tag);
fos.close()</span>

注：item