java 操作图片代码

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 .URL;
public class pic {
private Font font = new Font("", Font.PLAIN, 20);// 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.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 (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.RED);
if (this.font != null)
g.setFont(this.font);
g.drawString("?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) {
pic tt = new pic();
BufferedImage d = tt.loadImageLocal("E:\\me2.jpg");
BufferedImage b = tt
.loadImageLocal("E:\\文件(word,excel,pdf,ppt.txt)\\zte-logo.png");
// tt.writeImageLocal("D:\\cc.jpg",tt.modifyImage(d,"xia_mingjian",10,20)
//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");
}
}