将文本转换内容,以图片 [英] Convert text content to Image
问题描述
有没有出来,允许文本内容转换为图像文件的任何Java库?我只知道 ImageMagick的的(JMagick在这种情况下),但我不希望安装任何外部的二进制文件(我的应用程序在Tomcat服务器将被部署为.war文件,所以我不希望任何其他依赖比Java更)。
Is there out any Java library that allows converting text content to image files? I only know of ImageMagick (JMagick in this case) but I wouldn't like to install any external binaries (my app will be deployed as a .war file in a Tomcat server so I don't want any other dependencies more than Java).
例如,从字符串你好,我想这个生成简单的图像:
For example, from the string "Hello", I would like to generate this simple image:
推荐答案
2D API 应能够实现你需要什么。它有一些复杂的文本处理能力为好。
The Graphics 2D API should be capable of achieving what you need. It has some complex text handling capabilities as well.
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class TextToGraphics {
public static void main(String[] args) {
String text = "Hello";
/*
Because font metrics is based on a graphics context, we need to create
a small, temporary image so we can ascertain the width and height
of the final image
*/
BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = img.createGraphics();
Font font = new Font("Arial", Font.PLAIN, 48);
g2d.setFont(font);
FontMetrics fm = g2d.getFontMetrics();
int width = fm.stringWidth(text);
int height = fm.getHeight();
g2d.dispose();
img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
g2d = img.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
g2d.setFont(font);
fm = g2d.getFontMetrics();
g2d.setColor(Color.BLACK);
g2d.drawString(text, 0, fm.getAscent());
g2d.dispose();
try {
ImageIO.write(img, "png", new File("Text.png"));
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
另外,请查阅写入/存储和图像
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