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Java生成图片,

来源: javaer 分享于  点击 36881 次 点评:7

Java生成图片,


package com.wizard;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;

import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.*;
import javax.swing.JButton;



public class GrpaDemo ...{
    
public static void main(String[] args) throws IOException...{
        
int width = 100;    
        
int height = 100;    
        String s 
= "Hello";    
            
        File file 
= new File("d:/image.png");    
            
        Font font 
= new Font("Serif", Font.BOLD, 10);    
        BufferedImage bi 
= new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);    
        Graphics2D g2 
= (Graphics2D)bi.getGraphics();    
        
        g2.setBackground(Color.yellow);    
        g2.clearRect(
00, width, height);    
        g2.setPaint(Color.RED);    
            
        FontRenderContext context 
= g2.getFontRenderContext();    
        Rectangle2D bounds 
= font.getStringBounds(s, context);    
        
double x = (width - bounds.getWidth()) / 2;    
        
double y = (height - bounds.getHeight()) / 2;    
        
double ascent = -bounds.getY();    
        
double baseY = y + ascent;    
            
        g2.drawString(s, (
int)x, (int)baseY); 
        
        Rectangle2D rect 
=new  Rectangle2D.Double(2.0D,2.0D,100D,100D);       
        
        g2.setPaint(Color.blue);
        g2.draw(rect);       
        
        JButton btn 
= new JButton("Hello");
        btn.setBounds(
10105050);
        Graphics2D g3 
= (Graphics2D)btn.getGraphics();
//       Shape sh = g3
//      g2.draw(sh);
        
        ImageIO.write(bi, 
"png", file);  
       
// ImageIO.write(btn, "png", file);
    }

}
 

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