业务需求要在图片上添加水印。下面粘出代码供自己和大家分享
package com.pro.drawTextOnImg; import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException; import javax.imageio.ImageIO;
import javax.swing.ImageIcon; import org.apache.commons.lang3.StringUtils; public class TestImg { public static void main(String[] args) {
String filePath = "d:\\inimg03.png";
String outPath = "d:\\2.jpg";
drawTextInImg(filePath, outPath, new FontText("中国", 1, "#CC2BAC", 40, "黑体")); } public static void drawTextInImg(String filePath,String outPath, FontText text) {
ImageIcon imgIcon = new ImageIcon(filePath);
Image img = imgIcon.getImage();
int width = img.getWidth(null);
int height = img.getHeight(null);
BufferedImage bimage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB); Graphics2D g = bimage.createGraphics();
g.setColor(getColor(text.getWm_text_color()));
g.setBackground(Color.white);
g.drawImage(img, 0, 0, null);
Font font = null;
if (StringUtils.isEmpty(text.getWm_text_font())
&& text.getWm_text_size() != null) {
font = new Font(text.getWm_text_font(), Font.BOLD,
text.getWm_text_size());
} else {
font = new Font(null, Font.BOLD, 15);
} g.setFont(font);
FontMetrics metrics = new FontMetrics(font){};
Rectangle2D bounds = metrics.getStringBounds(text.getText(), null);
int textWidth = (int) bounds.getWidth();
int textHeight = (int) bounds.getHeight();
int left = 0;
int top = textHeight; //九宫格控制位置
if(text.getWm_text_pos()==2){
left = width/2;
}
if(text.getWm_text_pos()==3){
left = width -textWidth;
}
if(text.getWm_text_pos()==4){
top = height/2;
}
if(text.getWm_text_pos()==5){
left = width/2;
top = height/2;
}
if(text.getWm_text_pos()==6){
left = width -textWidth;
top = height/2;
}
if(text.getWm_text_pos()==7){
top = height - textHeight;
}
if(text.getWm_text_pos()==8){
left = width/2;
top = height - textHeight;
}
if(text.getWm_text_pos()==9){
left = width -textWidth;
top = height - textHeight;
}
g.drawString(text.getText(), left, top);
g.dispose(); try {
FileOutputStream out = new FileOutputStream(outPath);
ImageIO.write(bimage, "JPEG", out);
out.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} // color #2395439
public static Color getColor(String color) {
if (color.charAt(0) == '#') {
color = color.substring(1);
}
if (color.length() != 6) {
return null;
}
try {
int r = Integer.parseInt(color.substring(0, 2), 16);
int g = Integer.parseInt(color.substring(2, 4), 16);
int b = Integer.parseInt(color.substring(4), 16);
return new Color(r, g, b);
} catch (NumberFormatException nfe) {
return null;
}
}
}
下面是 FontText里面主要是水印的基本信息
package com.pro.drawTextOnImg;
public class FontText {
private String text;
private int wm_text_pos;
private String wm_text_color;
private Integer wm_text_size;
private String wm_text_font;//字体 “黑体，Arial”
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public int getWm_text_pos() {
return wm_text_pos;
}
public void setWm_text_pos(int wm_text_pos) {
this.wm_text_pos = wm_text_pos;
}
public String getWm_text_color() {
return wm_text_color;
}
public void setWm_text_color(String wm_text_color) {
this.wm_text_color = wm_text_color;
}
public Integer getWm_text_size() {
return wm_text_size;
}
public void setWm_text_size(Integer wm_text_size) {
this.wm_text_size = wm_text_size;
}
public String getWm_text_font() {
return wm_text_font;
}
public void setWm_text_font(String wm_text_font) {
this.wm_text_font = wm_text_font;
}
public FontText(String text, int wm_text_pos, String wm_text_color,
Integer wm_text_size, String wm_text_font) {
super();
this.text = text;
this.wm_text_pos = wm_text_pos;
this.wm_text_color = wm_text_color;
this.wm_text_size = wm_text_size;
this.wm_text_font = wm_text_font;
}
public FontText(){}
}