package com.xidian.servlet;
import java.awt.Color;
import java.awt.Font;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.DefaultCategoryDataset;
/**
 * 柱状分布统计图
 * @说明 
 * @author fei.teng
 * @version 1.0
 * @since
 */
@SuppressWarnings("serial")
public class ParagraphsServlet extends HttpServlet {
	protected void service(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		DefaultCategoryDataset dataTime = new DefaultCategoryDataset();
		// 这是一组数据
		dataTime.addValue(52, "0-6", "2010-1-1");
		dataTime.addValue(86, "6-12", "2010-1-1");
		dataTime.addValue(126, "12-18", "2010-1-1");
		dataTime.addValue(42, "18-24", "2010-1-1");
		// 这是一组数据
		dataTime.addValue(452, "0-6", "2010-1-2");
		dataTime.addValue(96, "6-12", "2010-1-2");
		dataTime.addValue(254, "12-18", "2010-1-2");
		dataTime.addValue(126, "18-24", "2010-1-2");
		// 这是一组数据
		dataTime.addValue(256, "0-6", "2010-1-3");
		dataTime.addValue(86, "6-12", "2010-1-3");
		dataTime.addValue(365, "12-18", "2010-1-3");
		dataTime.addValue(24, "18-24", "2010-1-3");
		try {
			DefaultCategoryDataset data = dataTime;
			// 使用ChartFactory创建3D柱状图，不想使用3D，直接使用createBarChart
			JFreeChart chart = ChartFactory.createBarChart3D(
					"网站时间段访问量统计", 
					"时间", 
					"访问量", 
					data,
					PlotOrientation.VERTICAL, 
					true, 
					false, 
					false
			);
			// 设置整个图片的背景色
			chart.setBackgroundPaint(Color.PINK);
			// 设置图片有边框
			chart.setBorderVisible(true);
			Font kfont = new Font("宋体", Font.PLAIN, 12);    // 底部
			Font titleFont = new Font("宋体", Font.BOLD, 25); // 图片标题
			// 图片标题
			chart.setTitle(new TextTitle(chart.getTitle().getText(), titleFont));
			// 底部
			chart.getLegend().setItemFont(kfont);
			// 得到坐标设置字体解决乱码
			CategoryPlot categoryplot = (CategoryPlot) chart.getPlot();
			categoryplot.setDomainGridlinesVisible(true);
			categoryplot.setRangeCrosshairVisible(true);
			categoryplot.setRangeCrosshairPaint(Color.blue);
			NumberAxis numberaxis = (NumberAxis) categoryplot.getRangeAxis();
			numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
			BarRenderer barrenderer = (BarRenderer) categoryplot.getRenderer();
			barrenderer.setBaseItemLabelFont(new Font("宋体", Font.PLAIN, 12));
			barrenderer.setSeriesItemLabelFont(1, new Font("宋体", Font.PLAIN, 12));
			CategoryAxis domainAxis = categoryplot.getDomainAxis();			
			/*------设置X轴坐标上的文字-----------*/
			domainAxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 11));
			/*------设置X轴的标题文字------------*/
			domainAxis.setLabelFont(new Font("宋体", Font.PLAIN, 12));
			/*------设置Y轴坐标上的文字-----------*/
			numberaxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 12));
			/*------设置Y轴的标题文字------------*/
			numberaxis.setLabelFont(new Font("宋体", Font.PLAIN, 12));
			/*------这句代码解决了底部汉字乱码的问题-----------*/
			chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12));	
			ChartUtilities.writeChartAsJPEG(response.getOutputStream(), 1.0f,
					chart, 500, 300, null);
		} catch (Exception es) {
			es.printStackTrace();
		}
	}
}