TA的每日心情 | 开心 2021-3-12 23:18 |
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签到天数: 2 天 [LV.1]初来乍到
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<%@ page language="java" contentType="image/jpeg;charset=GBK"
import="java.awt.*, java.awt.image.*, javax.imageio.ImageIO"%> <%!// 绘制饼图的说明- public void drawTips(String tips, Color color, Arc2D.Double arc2d, Graphics2D g2d) {
- Arc2D.Double position = arc2d;
- position.setAngleExtent(arc2d.getAngleExtent() / 2);
- position.x = arc2d.x - 15;
- position.y = arc2d.y - 15;
- position.width = arc2d.getWidth() + 50;
- position.height = arc2d.getHeight() + 50;
- Point2D.Double endPoint = (Point2D.Double) position.getEndPoint();
- g2d.setPaint(color);
- int stringLength = g2d.getFontMetrics().stringWidth(tips);
- if (endPoint.x <= arc2d.getCenterX())
- g2d.drawString(tips, (float) endPoint.x - stringLength,
- (float) endPoint.y);
- else {
- g2d.drawString(tips, (float) endPoint.x, (float) endPoint.y);
- }
- }
- // 清空缓冲区
- response.reset();
- // 注意这里的MIME类型
- response.setContentType("image/png");
- // 创建一个 500X375 的图像
- int width = 500, height = 375;
- BufferedImage image = new BufferedImage(width, height,
- BufferedImage.TYPE_INT_RGB);
- // 创建Java2D对象
- Graphics2D g2d = image.createGraphics();
- // 填充整个背景
- g2d.setPaint(Color.WHITE);
- g2d.fillRect(0, 0, width, height);
- // 绘制阴影,由灰色渐进圆角矩形组成
- GradientPaint grayGP = new GradientPaint(0, 0, Color.GRAY, width,
- height, new Color(218, 214, 212), false);
- g2d.setPaint(grayGP);
- RoundRectangle2D.Float bgRR = new RoundRectangle2D.Float(5, 5,
- width - 5, height - 5, 50, 50);
- g2d.fill(bgRR);
- // 绘制渐进蓝色圆角矩形背景
- GradientPaint blueGP = new GradientPaint(0, 0, new Color(252, 197,
- 113), width / 2, height / 2, new Color(255, 255, 169), true);
- g2d.setPaint(blueGP);
- g2d.fillRoundRect(0, 0, width - 5, height - 5, 50, 50);
- // 绘制深蓝色圆角矩形轮廓
- BasicStroke bs = new BasicStroke(1.2f);
- g2d.setStroke(bs);
- g2d.setPaint(new Color(55, 71, 105));
- g2d.drawRoundRect(0, 0, width - 5, height - 5, 50, 50);
- // 绘制图表标题
- //String chartTitle = "客户构成分析";
- g2d.setColor(Color.BLACK);
- g2d.setFont(new Font("宋体", Font.PLAIN, 30));
- //int stringLength = g2d.getFontMetrics().stringWidth(chartTitle);
- //g2d.drawString(chartTitle, (width - stringLength) / 2, 30);
- // 定义圆弧
- Arc2D.Double arc2d = new Arc2D.Double();
- double startAngle = 30.0, arcAngle = 0.0;
- double rectWidth = 295.0, rectHeight = 245.0;
- Point2D.Double p2d = new Point2D.Double((width - rectWidth) / 2, 70.0);
- int arcType = Arc2D.PIE;
- Color color[] = new Color[5];
- color[0] = new Color(99, 99, 0);
- color[1] = new Color(255, 169, 66);
- color[2] = new Color(33, 255, 66);
- color[3] = new Color(33, 0, 255);
- color[4] = new Color(255, 0, 66);
- double bookSales[] = new double[5];
- double totalSales = 0.0;
- // 定义厚度
- int thickness = 25;
- for (int i = 0; i < bookSales.length; i++) {
- bookSales[i] = 1 + Math.random() * 99;
- totalSales += bookSales[i];
- }
- // 绘制起始角度不大于90度的圆弧
- startAngle = 30;
- for (int i = 0; i < bookSales.length; i++) {
- arcAngle = bookSales[i];
- if (startAngle >= 90) {
- break;
- }
- for (int j = thickness; j > 0; j--) {
- g2d.setColor(color[i].darker());
- arc2d = new Arc2D.Double(p2d.x, p2d.y + j, rectWidth,
- rectHeight, startAngle, arcAngle, arcType);
- // 填充圆弧
- g2d.fill(arc2d);
- }
- // 更新圆弧的起始角度
- startAngle += arcAngle;
- }
- // 绘制起始角度不小于270度的圆弧
- startAngle = 390;
- for (int i = bookSales.length - 1; i > 0; i--) {
- arcAngle = bookSales[i];
- if (startAngle <= 270) {
- break;
- }
- for (int j = thickness; j > 0; j--) {
- g2d.setColor(color[i].darker());
- arc2d = new Arc2D.Double(p2d.x, p2d.y + j, rectWidth,
- rectHeight, startAngle, -arcAngle, arcType);
- // 填充圆弧
- g2d.fill(arc2d);
- }
- // 更新圆弧的起始角度
- startAngle -= arcAngle;
- }
- // 绘制起始角度在90度到270度之间的圆弧
- startAngle = 30;
- for (int i = 0; i < bookSales.length; i++) {
- arcAngle = bookSales[i];
- if (startAngle > 90 && startAngle < 270) {
- for (int j = thickness; j > 0; j--) {
- g2d.setColor(color[i].darker());
- arc2d = new Arc2D.Double(p2d.x, p2d.y + j, rectWidth,
- rectHeight, startAngle + arcAngle, -arcAngle,
- arcType);
- // 填充圆弧
- g2d.fill(arc2d);
- }
- }
- // 更新圆弧的起始角度
- startAngle += arcAngle;
- }
- // 绘制最上面一层圆弧
- startAngle = 30;
- for (int i = 0; i < bookSales.length; i++) {
- arcAngle = bookSales[i];//item.getPercent() * 3.6;
- g2d.setColor(color[i]);
- arc2d = new Arc2D.Double(p2d.x, p2d.y, rectWidth, rectHeight,
- startAngle, arcAngle, arcType);
- // 填充圆弧
- g2d.fill(arc2d);
- // 描绘圆弧轮廓
- g2d.setStroke(new BasicStroke(1.2f));
- g2d.setPaint(Color.GRAY);
- g2d.draw(arc2d);
- // 更新圆弧的起始角度
- startAngle += arcAngle;
- g2d.setFont(new Font("宋体", Font.PLAIN, 12));
- }
- // 部署图形
- g2d.dispose();
- // 利用ImageIO类的write方法对图像进行编码
- ServletOutputStream sos = response.getOutputStream();
- ImageIO.write(image, "PNG", sos);
- sos.close();
-
- out.clear();
- out = pageContext.pushBody();
- %>
复制代码
源码下载:http://file.javaxxz.com/2014/10/2/100156406.zip |
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