我有200张照片来改变大小，但我能做的是1比1 ...任何1可以帮我解决迭代目录问题 [英] I got 200 photo to change size , but what I can do is 1 by 1... Any 1 can help me solve iterate directory problem

问题描述

import javax.imageio.ImageIO;

import java.awt。*;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;



public class ResizeImageExample {



public static void main（String ... args）抛出IOException {



文件输入=新文件（/ Users / Brantley / Desktop / pt / latest / 2.jpg）;

BufferedImage image = ImageIO.read（输入）;

调整BufferedImage大小=调整大小（图像，28,28）;



文件输出=新文件（/ Users / Brantley / Desktop / pt / jpg / 2.jpg）;

ImageIO。写（调整大小，png，输出）;





}



private static BufferedImage resize（BufferedImage img，int height，int width）{

Image tmp = img.getScaledInstance（width，height，Image.SCALE_SMOOTH）;

BufferedImage resized = new BufferedImage（width， height，BufferedImage.TYPE_INT_ARGB）;

Graphics2D g2d = resized.createGraphics（）;

g2d.drawImage（tmp，0,0，null）;

g2d.dispose（）;

返回调整大小;

}



我是什么尝试过：



i得到200张照片来改变大小，但我能做的是1比1 ...任何1都可以帮我解决迭代目录问题

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class ResizeImageExample {

public static void main(String... args) throws IOException {

File input = new File("/Users/Brantley/Desktop/pt/latest/2.jpg");
BufferedImage image = ImageIO.read(input);
BufferedImage resized = resize(image, 28, 28);

File output = new File("/Users/Brantley/Desktop/pt/jpg/2.jpg");
ImageIO.write(resized, "png", output);


}

private static BufferedImage resize(BufferedImage img, int height, int width) {
Image tmp = img.getScaledInstance(width, height, Image.SCALE_SMOOTH);
BufferedImage resized = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = resized.createGraphics();
g2d.drawImage(tmp, 0, 0, null);
g2d.dispose();
return resized;
}

What I have tried:

i got 200 photo to change size , but what i can do is 1 by 1... any 1 can help me solve iterate directory problem

推荐答案

请参阅创建和阅读目录（The Java™Tutorials>基本课程>基本I / O） [ ^ ]有关如何使用 newDirectoryStream 方法枚举目录中文件的示例。



你也可以使用文件（Java Platform SE 7）之一： listFiles（） [ ^ ]方法。

See Creating and Reading Directories (The Java™ Tutorials > Essential Classes > Basic I/O)[^] for examples on how to enumerate files in a directory using the newDirectoryStream method.

You may also use one of the File (Java Platform SE 7 ): listFiles()[^] methods.

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