java中jfreechart的兑现.柱状图+饼状图
java中jfreechart的实现.柱状图+饼状图
jar包：jfreechart-1.0.8a.jar
java类1
以下类是柱状图和饼状图实现的公共类，要使用的时候直接调用以下类的方法就是
java实现类2
调用以上方法实现。
jsp页面：
自己写的..以后用的着
jar包：jfreechart-1.0.8a.jar
java类1
以下类是柱状图和饼状图实现的公共类，要使用的时候直接调用以下类的方法就是
package com.hz.util;
import java.awt.Font;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.struts2.ServletActionContext;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartRenderingInfo;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.block.BlockContainer;
import org.jfree.chart.block.BorderArrangement;
import org.jfree.chart.block.EmptyBlock;
import org.jfree.chart.entity.StandardEntityCollection;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DatasetRenderingOrder;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.chart.title.CompositeTitle;
import org.jfree.chart.title.LegendTitle;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.TextAnchor;
public class BarChart {
protected HttpServletRequest request = ServletActionContext.getRequest();
//柱状图的实现方法
public JFreeChartPojo barCharts(String title,String x,String y,DefaultCategoryDataset dataset) throws IOException{
JFreeChartPojo jFreeChartPojo = new JFreeChartPojo();
JFreeChart chart = ChartFactory.createBarChart3D(title,
x,
y,
dataset,
PlotOrientation.VERTICAL,
false,
false,
false);
CategoryPlot plot = chart.getCategoryPlot();
CategoryAxis categoryaxis = plot.getDomainAxis();
NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();
categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
categoryaxis.setLabelFont(new Font("宋体", Font.PLAIN, 15));//X说明的字体
categoryaxis.setTickLabelFont(new Font("宋体", Font.PLAIN, 12));//X显示的字体
numberaxis.setLabelFont(new Font("宋体", Font.PLAIN, 15));//Y显示的字体
numberaxis.setTickLabelFont(new Font("宋体", Font.PLAIN, 12));//Y说明的字体
numberaxis.setUpperMargin(0.1);
BarRenderer3D renderer = (BarRenderer3D) plot.getRenderer();
renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
renderer.setBaseItemLabelsVisible(true);
renderer.setBaseItemLabelFont(new Font("TimesRoman", Font.PLAIN, 12)); //柱状图上面的字体
renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(
ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_CENTER));
renderer.setItemLabelAnchorOffset(10D);// 设置柱形图上的文字偏离值
int k = dataset.getColumnCount();
int b;
//以下判断是控制柱子的多少在页面上显示的距离
if (k == 1) {
plot.getDomainAxis().setLowerMargin(0.2);//设置柱子距离左端距离
plot.getDomainAxis().setUpperMargin(0.2);//设置柱子距离右端距离
((BarRenderer3D) plot.getRenderer()).setItemMargin(0.5);
b=200;
}else if(k<4){
plot.getDomainAxis().setLowerMargin(0.2);//设置柱子距离左端距离
plot.getDomainAxis().setUpperMargin(0.2);//设置柱子距离右端距离
renderer.setItemMargin(0.001);
b=250;
}
else if (k < 8) {
b=500;
renderer.setMaximumBarWidth(0.04);//设置柱子的宽度
renderer.setMinimumBarLength(0.1);
double margin = (1.0 - k * 0.08) / 3;
plot.getDomainAxis().setLowerMargin(0.05);
plot.getDomainAxis().setUpperMargin(0.05);
((BarRenderer3D) plot.getRenderer()).setItemMargin(margin);
} else if(k<15){
b=800;
renderer.setMaximumBarWidth(0.04);//设置柱子的最大宽度
((BarRenderer3D) plot.getRenderer()).setItemMargin(0.1);
}else if(k<40){
b=1000;
renderer.setMaximumBarWidth(0.03);//设置柱子的最大宽度
plot.getDomainAxis().setLowerMargin(0.02);
plot.getDomainAxis().setUpperMargin(0.02);
((BarRenderer3D) plot.getRenderer()).setItemMargin(0.0001);
}else{
b=1000;
}
plot.setRenderer(renderer);
HttpSession session = request.getSession();
String filename = ServletUtilities.saveChartAsPNG(chart, b, 400, null, session);
String graphURL = request.getContextPath() + "/DisplayChart?filename=" + filename;
jFreeChartPojo.setFilename(filename);
jFreeChartPojo.setGraphURL(graphURL);
return jFreeChartPojo;
}
//-------
//饼状图实现方法
//-------
public JFreeChartPojo pieCharts(DefaultPieDataset data,String title) throws IOException{
JFreeChartPojo jFreeChartPojo = new JFreeChartPojo();
PiePlot plot = new PiePlot(data);
plot.setCircular(true);
plot.setLabelFont(new Font("宋体", Font.PLAIN, 13));
StandardPieSectionLabelGenerator generator = new StandardPieSectionLabelGenerator(("{0}={1}({2})"), NumberFormat.getNumberInstance(),new DecimalFormat("0.00%"));
plot.setLabelGenerator(generator);
JFreeChart chart = new JFreeChart("",JFreeChart.DEFAULT_TITLE_FONT, plot, true);
chart.setBackgroundPaint(java.awt.Color.white);//可选，设置图片背景色
chart.setTitle(title);//可选，设置图片标题
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
//500是图片长度，300是图片高度
HttpSession session = request.getSession();
String filename = ServletUtilities.saveChartAsPNG(chart, 600, 400, info, session);
String graphURL = request.getContextPath() + "/DisplayChart?filename=" + filename;
jFreeChartPojo.setFilename(filename);
jFreeChartPojo.setGraphURL(graphURL);
return jFreeChartPojo;
}
public JFreeChartPojo dualAxisCharts() throws IOException{
JFreeChartPojo jFreeChartPojo = new JFreeChartPojo();
String s = "S1";
String s3 = "无锡--上海";
String s4 = "Category 2";
String s5 = "Category 3";
String s6 = "Category 4";
String s7 = "Category 5";
String s8 = "Category 6";
String s9 = "Category 7";
String s10 = "Category 8";
DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();
defaultcategorydataset.addValue(1, s, s3);
defaultcategorydataset.addValue(4, s, s4);
defaultcategorydataset.addValue(3, s, s5);
defaultcategorydataset.addValue(5, s, s6);
defaultcategorydataset.addValue(5, s, s7);
defaultcategorydataset.addValue(7, s, s8);
defaultcategorydataset.addValue(7, s, s9);
defaultcategorydataset.addValue(8, s, s10);
JFreeChart chart = ChartFactory.createBarChart("Dual Axis Chart",
"Category", "Value", defaultcategorydataset, PlotOrientation.VERTICAL, false, true, false);
CategoryPlot categoryplot = (CategoryPlot)chart.getPlot();
categoryplot.setDomainAxisLocation(AxisLocation.BOTTOM_OR_RIGHT);
//CategoryDataset categorydataset =defaultcategorydataset_1;
//categoryplot.setDataset(1, categorydataset);
categoryplot.mapDatasetToRangeAxis(1, 1);
CategoryAxis categoryaxis = categoryplot.getDomainAxis();
categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
NumberAxis numberaxis = new NumberAxis("Secondary");
categoryplot.setRangeAxis(1, numberaxis);
LineAndShapeRenderer lineandshaperenderer =new LineAndShapeRenderer();
// lineandshaperenderer.setToolTipGenerator(new StandardCategoryToolTipGenerator());
lineandshaperenderer.setBaseLinesVisible(true);
// lineandshaperenderer.setShapesFilled(true);
// lineandshaperenderer.setShapesVisible(true);
// lineandshaperenderer.setItemLabelsVisible(true);
categoryplot.setRenderer(1, lineandshaperenderer);
categoryplot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
LegendTitle legendtitle = new LegendTitle(categoryplot.getRenderer(0));
legendtitle.setMargin(new RectangleInsets(2D, 2D, 2D, 2D));
//legendtitle.setBorder(new BlockBorder());
LegendTitle legendtitle1 = new LegendTitle(categoryplot.getRenderer(1));
legendtitle1.setMargin(new RectangleInsets(2D, 2D, 2D, 2D));
//legendtitle1.setBorder(new BlockBorder());
BlockContainer blockcontainer = new BlockContainer(new BorderArrangement());
blockcontainer.add(legendtitle, RectangleEdge.LEFT);
blockcontainer.add(legendtitle1, RectangleEdge.RIGHT);
blockcontainer.add(new EmptyBlock(2000D, 0.0D));
CompositeTitle compositetitle = new CompositeTitle(blockcontainer);
compositetitle.setPosition(RectangleEdge.BOTTOM);
chart.addSubtitle(compositetitle);
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
//500是图片长度，300是图片高度
HttpSession session = request.getSession();
String filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, info, session);
String graphURL = request.getContextPath() + "/DisplayChart?filename=" + filename;
jFreeChartPojo.setFilename(filename);
jFreeChartPojo.setGraphURL(graphURL);
return jFreeChartPojo;
}
}
java实现类2
调用以上方法实现。
public String timeQuery() throws Exception {
String qssj = request.getParameter("qssj");
String jzsj = request.getParameter("jzsj");
String cycle = request.getParameter("cycle");
if (qssj.equals("")) {
qssj = "1980-01-01 00:00:00";
}
if (jzsj.equals("")) {
Date date = new Date();
SimpleDateFormat formatter = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
jzsj = formatter.format(date);
}
List<?> list = iAnalysisSpeedingCarBo.queryTime(qssj, jzsj, cycle);
List<SpaceCarPojo> timeQuerySpeedingCar = new ArrayList<SpaceCarPojo>();
DatePojo datePojo = new DatePojo();
UtilMethod utilMethod = new UtilMethod();
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
try {
List<?> arylist = (ArrayList<?>) list.get(0);
for (int i = 0; i < arylist.size(); i++) {
String a = ((Object[]) arylist.get(i))[0].toString();
String b = ((Object[]) arylist.get(i))[1].toString();
SpaceCarPojo spaceCarPojo = new SpaceCarPojo();
String q = null;
String year = null;
if (cycle.equals("year")) {
a = a + "年";
}
if (cycle.equals("q")) {
q = a.substring(5);
year = a.substring(0, 4);
if (q.equals("1")) {
a = year + "年" + "春季(第一季)";
}
if (q.equals("2")) {
a = year + "年" + "夏季(第二季)";
}
if (q.equals("3")) {
a = year + "年" + "秋季(第三季)";
}
if (q.equals("4")) {
a = year + "年" + "冬季(第四季)";
}
}
if (cycle.equals("month")) {
a = a + "月";
}
if (cycle.equals("iw")) {
String years = a.substring(0, 4);
String weeks = a.substring(5);
a = years + "年第" + weeks + "周";
}
if (cycle.equals("day")) {
a = a + "日";
}
datePojo.setDateBegin(qssj);
datePojo.setDateEnd(jzsj);
spaceCarPojo.setDate(utilMethod.trim(a));
spaceCarPojo.setCount(utilMethod.trim(b));
dataset.addValue(Integer.parseInt(utilMethod.trim(b)), "1",
utilMethod.trim(a));
timeQuerySpeedingCar.add(spaceCarPojo);
}
BarChart BarChart = new BarChart();
//这里调用了java类1
JFreeChartPojo jFreeChartPojo = BarChart.barCharts("时间特征分析", "时间",
"车辆数", dataset);
request.setAttribute("jFreeChart", jFreeChartPojo);
request.setAttribute("datePojo", datePojo);
// request.setAttribute("speedingCar", timeQuerySpeedingCar);
} catch (Exception e) {
e.printStackTrace();
}
return "xx";//返回stucts2配置
}
jsp页面：
<table id="table1" style="display: none" width="100%">
<tr>
<td width="10%"></td>
<td width="90%">
<img id="img1" style="display: none"
src="${jFreeChart.graphURL }" border="0"
usemap="${jFreeChart.filename }">
<br>
</td>
</tr>
<tr>
<td></td>
<td style="color: #DD0919;">
${jFreeChart.description }
</td>
</tr>
</table>
//注：action url调用就不加以说明了..
//直接上效果图
1 楼
xn792474
2010-12-02