java绘图工具类

package com.jjgame.boss;

import java.util.*;

import java.io.*;

import java.text.*;

import java.math.*;

import java.awt.*;

import javax.servlet.*;

import javax.servlet.http.*;

import org.jfree.chart.*;

import org.jfree.chart.plot.*;

import org.jfree.chart.axis.*;

import org.jfree.chart.servlet.ServletUtilities;

import https://www.360docs.net/doc/dc7064191.html,bels.StandardCategoryToolTipGenerator ;

import https://www.360docs.net/doc/dc7064191.html,bels.StandardPieSectionLabelGenerator;

import https://www.360docs.net/doc/dc7064191.html,bels.StandardCategoryItemLabelGenerator;

import org.jfree.chart.entity.StandardEntityCollection;

import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;

import org.jfree.chart.renderer.category.BarRenderer;

import org.jfree.data.xy.XYDataset;

import org.jfree.data.general.DefaultPieDataset;

import org.jfree.data.time.*;

import org.jfree.data.category.DefaultCategoryDataset;

public class ChartUtil {

// 图标数据

private class chartData {

private String name;

private double value;

private int index;

private String index_name;

chartData(String name, double value, int index, String index_name) { https://www.360docs.net/doc/dc7064191.html, = name;

this.value = value;

this.index = index;

this.index_name = index_name;

}

};

private Vector dset;

private https://www.360docs.net/doc/dc7064191.html,ng.Class date_class;

private int time_tick_type = 2;

private java.util.Date start_time;

private java.util.Date end_time;

private double l_limit, u_limit;

private String time_fmt;

private String time_axis_fmt;

private boolean horizontal_flag;

private boolean shapes_visible;

private int auto_tick_n;

public ChartUtil() {

date_class = Day.class;

start_time = new java.util.Date();

end_time = new java.util.Date();

l_limit = 0.0D;

u_limit = 0.0D;

time_fmt = "yyyy-M-d";

time_axis_fmt = "M-d";

horizontal_flag = false;

shapes_visible = true;

this.auto_tick_n = 15;

dset = new Vector();

}

public ChartUtil(String date_type,

String start_time, String end_time, String time_fmt,

double l_limit, double u_limit,

String time_axis_fmt) {

SimpleDateFormat fmt = new SimpleDateFormat(time_fmt);

setDateClass(date_type);

this.start_time = new java.util.Date();

this.end_time = new java.util.Date();

this.start_time = fmt.parse(start_time, new ParsePosition(0));

this.end_time = fmt.parse(end_time, new ParsePosition(0));

this.l_limit = l_limit;

this.u_limit = u_limit;

this.time_fmt = time_fmt;

this.time_axis_fmt = time_axis_fmt;

this.horizontal_flag = false;

this.shapes_visible = true;

this.auto_tick_n = 15;

dset = new Vector();

}

public void addData(String name, double value) {

dset.addElement(new chartData(name, value, 0, null));

}

public void addData(String name, double value, int index, String index_name) { dset.addElement(new chartData(name, value, index, index_name));

}

public void clearData() {

dset.clear();

}

public void setTimeFormat(String time_fmt, String time_axis_fmt) {

this.time_fmt = time_fmt;

this.time_axis_fmt = time_axis_fmt;

}

public void setValueRange(double l_limit, double u_limit) {

this.l_limit = l_limit;

this.u_limit = u_limit;

}

public void setTimeRange(String start_time, String end_time) {

SimpleDateFormat fmt = new SimpleDateFormat(time_fmt);

this.start_time = fmt.parse(start_time, new ParsePosition(0));

this.end_time = fmt.parse(end_time, new ParsePosition(0));

}

public void setHorizontalBar(boolean flag) {

horizontal_flag = flag;

}

public void setShapesVisible(boolean flag) {

shapes_visible = flag;

}

public void setAutoTickN(int n) {

auto_tick_n = n;

}

private String outChart(JFreeChart chart, int width, int height, HttpSession session) throws Exception {

ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());

String filename = ServletUtilities.saveChartAsPNG(chart, width, height, info, session); // ChartUtilities.writeImageMap(pw, filename, info, false);

// pw.flush();

return filename;

}

public String generatePieChart(

String title,

int width,

int height,

HttpSession session) {

String filename = null;

try {

DefaultPieDataset dataset = new DefaultPieDataset();

Iterator it = dset.iterator();

while (it.hasNext()) {

chartData data = it.next();

dataset.setValue(https://www.360docs.net/doc/dc7064191.html,, data.value);

}

JFreeChart chart = ChartFactory.createPieChart3D(

title, dataset,

true, true, false );

// Write the chart image to the temporary directory

PiePlot pieplot = (PiePlot)chart.getPlot();

pieplot.setBackgroundPaint(Color.lightGray);

pieplot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}:{1}({2})"));

filename = outChart(chart, width, height, session);

} catch (Exception e) {

System.out.println("Exception - " + e.toString());

e.printStackTrace(System.out);

filename = "picture_error.png";

}

return filename;

}

private void setupTimeChartShape(JFreeChart chart) {

XYPlot xyplot = (XYPlot)chart.getPlot();

// 设置背景颜色

xyplot.setBackgroundAlpha(0f);//

//xyplot.setBackgroundPaint(Color.white);

//前景色透明度

//xyplot.setForegroundAlpha(0.5f);

// 设置网格线是否可见

xyplot.setDomainGridlinesVisible(true);//设置网格竖线(Domain轴)颜色

xyplot.setRangeGridlinesVisible(true);//设置网格横线颜色

// 设置网格线的颜色

xyplot.setDomainGridlinePaint(Color.gray);

xyplot.setRangeGridlinePaint(Color.gray);

XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer)xyplot.getRenderer();

// 设置曲线的颜色和粗细

renderer.setSeriesPaint(0, Color.blue);

renderer.setBaseStroke(new BasicStroke(1.5F));

renderer.setBaseShapesVisible(shapes_visible); // 线上的点用图形标记出来

// 设置曲线上点图形的颜色

// renderer.setSeriesFillPaint(0, Color.white);

// renderer.setUseFillPaint(true);

}

private void setupTimeChartAxis(JFreeChart chart) {

SimpleDateFormat fmt = new SimpleDateFormat(time_axis_fmt);

XYPlot xyplot = (XYPlot)chart.getPlot();

NumberAxis numberaxis = (NumberAxis)xyplot.getRangeAxis();

DateAxis dateaxis = (DateAxis)xyplot.getDomainAxis();

// 设置时间轴上下限

dateaxis.setRange(start_time, end_time);

DateTickUnit tickUnit = dateaxis.getTickUnit();

if (xyplot.getDataset().getItemCount(0) > auto_tick_n)

dateaxis.setStandardTickUnits(DateAxis.createStandardDateTickUnits(TimeZone.getDefault() ));

else

dateaxis.setTickUnit(new DateTickUnit(time_tick_type, 1));

// dateaxis.setTickUnit(new DateTickUnit(DateTickUnit.MONTH, 1));

// dateaxis.setVerticalTickLabels(true);

// 设置时间轴标签格式

dateaxis.setDateFormatOverride(fmt);

// 设置为自适应

numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

// 设置纵轴上下限

DispLimit dl = new DispLimit();

if (l_limit > 0.0 || u_limit > 0.0)

numberaxis.setRange(l_limit, u_limit);

}

public void setDateClass(String date_type) {

if (date_type.equals("Day")) {

time_tick_type = DateTickUnit.DAY;

date_class = Day.class;

} else if (date_type.equals("Month")) {

time_tick_type = DateTickUnit.MONTH;

date_class = Month.class;

} else if (date_type.equals("Hour")) {

time_tick_type = DateTickUnit.HOUR;

date_class = Hour.class;

} else if (date_type.equals("Minute")) {

time_tick_type = DateTickUnit.MINUTE;

date_class = Minute.class;

} else if (date_type.equals("Second")) {

time_tick_type = DateTickUnit.SECOND;

date_class = Second.class;

} else if (date_type.equals("Year")) {

time_tick_type = DateTickUnit.YEAR;

date_class = Year.class;

} else if (date_type.equals("Week")) {

time_tick_type = DateTickUnit.DAY;

date_class = Week.class;

} else if (date_type.equals("Millisecond")) {

time_tick_type = https://www.360docs.net/doc/dc7064191.html,LISECOND;

date_class = Millisecond.class;

}

}

private TimeSeries getTimeSeries(TimeSeriesCollection timesc, chartData data) {

TimeSeries ts = null;

try {

ts = timesc.getSeries(data.index);

}

catch (Exception e) {

ts = new TimeSeries(data.index_name, date_class);

timesc.addSeries(ts);

}

return ts;

}

public String generateTimeChart(

String title,

String timeLabel,

String valueLabel,

String seriesName,

int width,

int height,

HttpSession session) {

String filename = null;

try {

TimeSeriesCollection timesc = new TimeSeriesCollection();

// TimeSeries timeseries = new TimeSeries(seriesName, date_class);

for (chartData data : dset) {

if (data.index_name == null)

data.index_name = seriesName;

TimeSeries ts = getTimeSeries(timesc, data);

SimpleDateFormat fmt = new SimpleDateFormat(time_fmt);

java.util.Date d = new java.util.Date();

d = fmt.parse(https://www.360docs.net/doc/dc7064191.html,, new ParsePosition(0));

// Day day = new Day(d);

// timeseries.addOrUpdate(day, data.value);

ts.addOrUpdate(RegularTimePeriod.createInstance(date_class, d, TimeZone.getDefault()), data.value);

}

JFreeChart chart = ChartFactory.createTimeSeriesChart(

title, timeLabel, valueLabel, timesc,

true, true, false );

// 设置线条，背景等外观格式

setupTimeChartShape(chart);

// 设置轴标签的格式

setupTimeChartAxis(chart);

filename = outChart(chart, width, height, session);

} catch (Exception e) {

System.out.println("Exception - " + e.toString());

e.printStackTrace(System.out);

filename = "picture_error.png";

}

return filename;

}

private void setupBarChartShape(JFreeChart chart) {

CategoryPlot plot = (CategoryPlot)chart.getPlot();

// 设置背景颜色

plot.setBackgroundPaint(Color.lightGray);

// 设置网格线是否可见

plot.setRangeGridlinesVisible(true);

// 设置网格线的颜色

plot.setRangeGridlinePaint(Color.white);

BarRenderer renderer = (BarRenderer)plot.getRenderer();

renderer.setSeriesPaint(0, Color.blue);

renderer.setBaseItemLabelsVisible(true);

renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());

// 设置柱状图的轮廓线为不可见

renderer.setDrawBarOutline(false);

// renderer.setMaximumBarWidth(1.0D);

}

private void setupBarChartAxis(JFreeChart chart) {

SimpleDateFormat fmt = new SimpleDateFormat(time_axis_fmt);

CategoryPlot plot = (CategoryPlot)chart.getPlot();

NumberAxis numberaxis = (NumberAxis)plot.getRangeAxis();

CategoryAxis categoryaxis = (CategoryAxis)plot.getDomainAxis();

numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositi ons(Math.PI/4));

categoryaxis.setLowerMargin(0.01);

categoryaxis.setUpperMargin(0.01);

}

public String generateBarChart(

String title,

String domainLabel,

String rangeLabel,

int width,

int height,

HttpSession session) {

String filename = null;

try {

DefaultCategoryDataset dataset = new DefaultCategoryDataset();

Iterator it = dset.iterator();

while (it.hasNext()) {

chartData data = it.next();

if (data.index_name == null)

data.index_name = rangeLabel;

dataset.addValue(data.value, data.index_name, https://www.360docs.net/doc/dc7064191.html,);

}

PlotOrientation orient = PlotOrientation.VERTICAL;

if (horizontal_flag)

orient = PlotOrientation.HORIZONTAL;

JFreeChart chart = ChartFactory.createBarChart(

title, domainLabel, rangeLabel, dataset,

orient, true, true, false );

// 设置线条，背景等外观格式

setupBarChartShape(chart);

// 设置轴标签的格式

setupBarChartAxis(chart);

filename = outChart(chart, width, height, session);

} catch (Exception e) {

System.out.println("Exception - " + e.toString());

e.printStackTrace(System.out);

filename = "picture_error.png";

}

return filename;

}

}