工具类——java在图片指定位置写字

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;

import javax.imageio.ImageIO;

public class PrintImage {

private Font       font     = new Font("黑体", Font.PLAIN, 25); // 添加字体的属性设置

private Graphics2D g        = null;

private int        fontsize = 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(new Color(120, 120, 110));//设置字体颜色
if (this.font != null)
g.setFont(this.font);
if (content != null) {
g.translate(w / 2, h / 2);
g.rotate(8 * Math.PI / 180);
g.drawString(content.toString(), x, 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（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("www.hi.baidu.com?xia_mingjian", 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) {
PrintImage tt = new PrintImage();
BufferedImage d = tt.loadImageLocal("D:\\test\\ggl.jpg");
String Cname = "寒洛";
tt.modifyImage(d, Cname+" 先生", -299, -250);
tt.writeImageLocal("D:\\test\\cc.jpg", d);
System.out.println("success");
}

}