实例如下：

package writeimg;

import javax.imageio.ImageIO;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.net.URL;

public class pic {

private Font font = new Font("华文彩云", Font.PLAIN, 40);// 添加字体的属性设置

private Graphics2D g = null;

private int fontsize = 0;

private int x = 0;

private int y = 0;

/**

* 导入本地图片到缓冲区

*/

public BufferedImage loadImageLocal(String imgName) {

try {

return ImageIO.read(new File(imgName));

} catch (IOException e) {

System.out.println(e.getMessage());

}

return null;

}

/**

* 导入网络图片到缓冲区

*/

public BufferedImage loadImageUrl(String imgName) {

try {

URL url = new URL(imgName);

return ImageIO.read(url);

} catch (IOException e) {

System.out.println(e.getMessage());

}

return null;

}

/**

* 生成新图片到本地

*/

public void writeImageLocal(String newImage, BufferedImage img) {

if (newImage != null && img != null) {

try {

File outputfile = new File(newImage);

ImageIO.write(img, "jpg", outputfile);

} catch (IOException e) {

System.out.println(e.getMessage());

}

}

}

/**

* 设定文字的字体等

*/

public void setFont(String fontStyle, int fontSize) {

this.fontsize = fontSize;

this.font = new Font(fontStyle, Font.PLAIN, fontSize);

}

/**

* 修改图片,返回修改后的图片缓冲区(只输出一行文本)

*/

public BufferedImage modifyImage(BufferedImage img, Object content, int x,

int y) {

try {

int w = img.getWidth();

int h = img.getHeight();

g = img.createGraphics();

g.setBackground(Color.WHITE);

g.setColor(Color.orange);//设置字体颜色

if (this.font != null)

g.setFont(this.font);

// 验证输出位置的纵坐标和横坐标

if (x >= h || y >= w) {

this.x = h - this.fontsize + 2;

this.y = w;

} else {

this.x = x;

this.y = y;

}

if (content != null) {

g.drawString(content.toString(), this.x, this.y);

}

g.dispose();

} catch (Exception e) {

System.out.println(e.getMessage());

}

return img;

}

/**

* 修改图片,返回修改后的图片缓冲区(输出多个文本段) xory：true表示将内容在一行中输出；false表示将内容多行输出

*/

public BufferedImage modifyImage(BufferedImage img, Object[] contentArr,

int x, int y, boolean xory) {

try {

int w = img.getWidth();

int h = img.getHeight();

g = img.createGraphics();

g.setBackground(Color.WHITE);

g.setColor(Color.RED);

if (this.font != null)

g.setFont(this.font);

// 验证输出位置的纵坐标和横坐标

if (x >= h || y >= w) {

this.x = h - this.fontsize + 2;

this.y = w;

} else {

this.x = x;

this.y = y;

}

if (contentArr != null) {

int arrlen = contentArr.length;

if (xory) {

for (int i = 0; i < arrlen; i++) {

g.drawString(contentArr[i].toString(), this.x, this.y);

this.x += contentArr[i].toString().length()

* this.fontsize / 2 + 5;// 重新计算文本输出位置

}

} else {

for (int i = 0; i < arrlen; i++) {

g.drawString(contentArr[i].toString(), this.x, this.y);

this.y += this.fontsize + 2;// 重新计算文本输出位置

}

}

}

g.dispose();

} catch (Exception e) {

System.out.println(e.getMessage());

}

return img;

}

/**

* 修改图片,返回修改后的图片缓冲区(只输出一行文本)

*

* 时间:2007-10-8

*

* @param img

* @return

*/

public BufferedImage modifyImageYe(BufferedImage img) {

try {

int w = img.getWidth();

int h = img.getHeight();

g = img.createGraphics();

g.setBackground(Color.WHITE);

g.setColor(Color.blue);//设置字体颜色

if (this.font != null)

g.setFont(this.font);

g.drawString("reyo.cn", w - 85, h - 5);

g.dispose();

} catch (Exception e) {

System.out.println(e.getMessage());

}

return img;

}

public BufferedImage modifyImagetogeter(BufferedImage b, BufferedImage d) {

try {

int w = b.getWidth();

int h = b.getHeight();

g = d.createGraphics();

g.drawImage(b, 100, 10, w, h, null);

g.dispose();

} catch (Exception e) {

System.out.println(e.getMessage());

}

return d;

}

public static void main(String[] args) {

pic tt = new pic();

BufferedImage d = tt.loadImageLocal("D:\\11.jpg");

// BufferedImage b = tt

// .loadImageLocal("E:\\文件(word,excel,pdf,ppt.txt)\\zte-logo.png");

tt.writeImageLocal("D:\\cc.jpg",tt.modifyImage(d,"西昌苹果",90,90)

//往图片上写文件

);

//tt.writeImageLocal("D:\\cc.jpg", tt.modifyImagetogeter(b, d));

//将多张图片合在一起

System.out.println("success");

}

}

以上就是小编为大家带来的java 在图片上写字,两个图片合并的实现方法全部内容了，希望大家多多支持聚米学院~