如何使用Java加载图像并将文本写入其中？ [英] How can I load an image and write text to it using Java?

问题描述

我的java项目中有一个位于images / image.png的图像。我想编写一个方法，其签名如下：

I've an image located at images/image.png in my java project. I want to write a method its signature is as follow

byte [] mergeImageAndText（String imageFilePath，String text，Point textPosition）;

此方法将加载位于 imageFilePath 和位置的图像图像的textPosition （左上）我想写文本，然后我想返回一个表示合并的新图像的byte []带文字。

This method will load the image located at imageFilePath and at position textPosition of the image (left upper) I want to write the text, then I want to return a byte[] that represents the new image merged with text.

推荐答案

试试这种方式：

import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;

public class ImagingTest {

    public static void main(String[] args) throws IOException {
        String url = "http://icomix.eu/gr/images/non-batman-t-shirt-gross.jpg";
        String text = "Hello Java Imaging!";
        byte[] b = mergeImageAndText(url, text, new Point(200, 200));
        FileOutputStream fos = new FileOutputStream("so2.png");
        fos.write(b);
        fos.close();
    }

    public static byte[] mergeImageAndText(String imageFilePath,
            String text, Point textPosition) throws IOException {
        BufferedImage im = ImageIO.read(new URL(imageFilePath));
        Graphics2D g2 = im.createGraphics();
        g2.drawString(text, textPosition.x, textPosition.y);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(im, "png", baos);
        return baos.toByteArray();
    }
}

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