Go语言视频零基础入门到精通

javalearner

<%@ page language="java" contentType="image/jpeg;charset=GBK"
   import="java.awt.*, java.awt.image.*,javax.imageio.ImageIO"%>
<%

1. // 在&#65533;存中创建图像  
   
2.   int width  = 600;  
   
3.   int height = 500;  
   
4.   BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);  
   
5.    
   
6. // 绘制图像  
   
7.   Graphics g = image.getGraphics();  
   
8.   Graphics2D g2d = (Graphics2D) g;  
   
9.   // 背景色  
   
10.   g.setColor(new Color(240, 249, 255));  
    
11.    
    
12.   g.fillRect(0, 0, width, height);  
    
13.   // 字体颜色  
    
14.   g.setColor(Color.BLACK);  
    
15.   g.setFont(new Font("宋体", Font.PLAIN, 22));  
    
16.   g.drawString("上半年访问量统计", 15, 25);  
    
17.   int visit[] = new int[6];  
    
18.   for (int i = 0; i < visit.length; i++) {  
    
19.       visit[i] = 1 + (int) (Math.random() * 100);  
    
20.   }  
    
21.    
    
22.   String mongth[] = { "1月", "2月", "3月", "4月", "5月", "6月" };  
    
23.    
    
24.   g.setFont(new Font("宋体", Font.BOLD, 16));  
    
25.   g.drawString("访问量（单位：万次）", 20, 50);  
    
26.   g.drawString("月份", 550, 465);  
    
27.   g.setFont(new Font("SanSSerif", Font.PLAIN, 12));  
    
28.    
    
29.   int visitValue = 0;  
    
30.   //画横线  
    
31.   for (int i = 418; i > 0; i -= 38) {  
    
32.       g.setColor(Color.BLACK);  
    
33.       g.drawString("" + visitValue, 36, (i + 27));  
    
34.       g.setColor(Color.LIGHT_GRAY);  
    
35.       g.drawLine(80, (i + 27), 520, (i + 27));  
    
36.      visitValue += 10;  
    
37.   }  
    
38. g.setColor(Color.BLACK);  
    
39. g.drawLine(80, 40, 80, 445);  
    
40. g.drawLine(80, 445, 550, 445);  
    
41. int drawHigh[] = new int[mongth.length];  
    
42. int drawwidth[] = new int[mongth.length];  
    
43.    
    
44. //折点坐标  
    
45. for (int i = 0; i < mongth.length; i++) {  
    
46.      drawHigh[i] = 445 - (int) (Math.ceil(visit[i] * 3.8));  
    
47.       drawwidth[i] = 110 + i * 80;  
    
48.      g.drawString(mongth[i], 110 + i * 80, 465);  
    
49. }  
    
50.    
    
51. //g2d.setXORMode(Color.WHITE);  
    
52. //折线粗细  
    
53.   g2d.setStroke(new BasicStroke(3.0f));  
    
54.   //折线的颜色  
    
55. g2d.setPaint(Color.RED);  
    
56. //画折线  
    
57. g2d.drawPolyline(drawwidth, drawHigh, mongth.length);  
    
58. // 产生图像  
    
59.   g.dispose();  
    
60.    
    
61.   ServletOutputStream sos = response.getOutputStream();  
    
62.   ImageIO.write(image,"JPEG",sos);
    
63.   sos.close();
    
64.   
    

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源码下载：http://file.javaxxz.com/2014/10/2/111015500.zip