主代码：
Demo.java
package com.jin.pan.mood.controller;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.io.File;
import java.io.IOException;
import java.net.URL;
public class Demo {
FontUtil cf=new FontUtil();
private Font font = cf.getDefinedFont(1, 50.0f); // 添加字体的属性设置
private Graphics2D g = null;
private int fontsize = 50;
private int x = 0;
private int y = 0;
/**
* 导入本地图片到缓冲区
*/
public BufferedImage loadImageLocalBg(String imgName) {
try {
return ImageIO.read(new File(imgName));
} catch (IOException e) {
System.out.println(e.getMessage());
}
return null;
}
public BufferedImage loadImageLocalHead(String imgName) {
try {
BufferedImage read = ImageIO.read(new File(imgName));
//获取缩放后的宽高
int width = 295;
int height = 413;
//调用缩放方法获取缩放后的图片
Image img = read.getScaledInstance(width , height, Image.SCALE_DEFAULT);
//创建一个新的缓存图片
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
//获取画笔
Graphics2D graphics = image.createGraphics();
//将Image对象画在画布上,最后一个参数,ImageObserver:接收有关 Image 信息通知的异步更新接口,没用到直接传空
graphics.drawImage(img, 0, 0,null);
//一定要释放资源
graphics.dispose();
return image;
} 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("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, 20, w, h, null);
g.dispose();
} catch (Exception e) {
System.out.println(e.getMessage());
}
return d;
}
public static void main(String[] args) {
Demo tt = new Demo();
BufferedImage d = tt.loadImageLocalBg("D:\\xx.jpg");
BufferedImage b = tt.loadImageLocalHead("D:\\yy.png");
//往图片上写文件
//tt.writeImageLocal("E:\\ploanshare\\2\\22.jpg", tt.modifyImage(d, "000000", 90, 90));
BufferedImage e = tt.modifyImagetogeter(b, d);
String[] content = {"nihao","shijie"};
BufferedImage f = tt.modifyImage(e,content,190,290,false);
tt.writeImageLocal("D:\\cc.jpg", f);
//将多张图片合在一起
System.out.println("success");
}
}引入字体代码：
FontUtil.java
package com.jin.pan.mood.controller;
import java.awt.FontFormatException;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.awt.Font;
public class FontUtil {
private Font definedFont = null;
public Font getDefinedFont(int ft,float fs) {
String fontUrl="D:\\ziti.ttf";
if (definedFont == null) {
InputStream is = null;
BufferedInputStream bis = null;
try {
is =new FileInputStream(new File(fontUrl));
bis = new BufferedInputStream(is);
definedFont = Font.createFont(Font.TRUETYPE_FONT, is);
//设置字体大小，float型
definedFont = definedFont.deriveFont(fs);
} catch (FontFormatException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (null != bis) {
bis.close();
}
if (null != is) {
is.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
return definedFont;
}
}
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