struts2整合JFreechart 饼图、折线图、柱形图

上效果图：

当然可以将数据导出图片格式存储。具体下的链接里的文件有保存成图片的操作。

因为是strust2整合JFreechart,所以strust2框架一定得搭建好。

1.导入三个包：http://download.csdn.net/detail/x46466/4328100

jcommon-1.0.16.jar

jfreechart-1.0.13.jar

struts2-jfreechart-plugin-2.0.11.jar

2.修改web.xml

<filter-name>struts2</filter-name>

<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>

</filter>

<filter-mapping>

<filter-name>struts2</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

修改成：

<filter-name>struts-prepare</filter-name>

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter</filter-class>

</filter>

<filter-name>struts-execute</filter-name>

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsExecuteFilter</filter-class>

</filter>

<filter-mapping>

<filter-name>struts-prepare</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>struts-execute</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

3.写action

1)3D饼图

/**

* @author zhengxinzao

public class PieChart3DAction extends ActionSupport {

private JFreeChart chart;

public JFreeChart getChart() {

chart = ChartFactory.createPieChart3D("学生成绩分析", getDataset(), true,

false, false);

chart

.setTitle(new TextTitle("学生成绩分析", new Font("黑体", Font.ITALIC,

22)));

LegendTitle legend = chart.getLegend();

legend.setItemFont(new Font("宋体", Font.ITALIC, 14));

PiePlot3D plot = (PiePlot3D) chart.getPlot();

plot.setLabelFont(new Font("隶书", Font.ITALIC, 18));

// 设定背景透明度（0-1.0之间）

plot.setBackgroundAlpha(0.9f);

// 设定前景透明度（0-1.0之间）

plot.setForegroundAlpha(0.50f);

String unitStyle = "{0}={1}({2})";

// 设置图例显示样式

plot.setLabelGenerator(new StandardPieSectionLabelGenerator(unitStyle,

NumberFormat.getNumberInstance(), new DecimalFormat("0.00%")));

// 设置引用标签显示样式

plot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator(

unitStyle, NumberFormat.getNumberInstance(), new DecimalFormat(

"0.00%")));

return chart;

}

public void setChart(JFreeChart chart) {

this.chart = chart;

}

private DefaultPieDataset getDataset() {

DefaultPieDataset dataset = new DefaultPieDataset();

dataset.setValue("不及格", 2);

dataset.setValue("及格", 8);

dataset.setValue("中等", 15);

dataset.setValue("良好", 15);

dataset.setValue("优秀", 5);

dataset.setValue("优秀1", 5);

return dataset;

}

2）拆线图

/**

* @author zhengxinzao

public class LineChartAction extends ActionSupport {

private JFreeChart chart;

public JFreeChart getChart() {

chart = ChartFactory.createTimeSeriesChart("水果销量统计图", "水果", "销量",

getDataSet(), true, false, false);

// 重新设置图标标题，改变字体

chart

.setTitle(new TextTitle("水果销量统计图", new Font("黑体", Font.ITALIC,

22)));

// 取得统计图标的第一个图例

LegendTitle legend = chart.getLegend(0);

// 修改图例的字体

legend.setItemFont(new Font("宋体", Font.BOLD, 14));

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

// 取得横轴

ValueAxis categoryAxis = plot.getDomainAxis();

// 设置横轴显示标签的字体

categoryAxis.setLabelFont(new Font("宋体", Font.BOLD, 22));

categoryAxis.setTickLabelFont(new Font("宋体", Font.BOLD, 18));

// 取得纵轴

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

// 设置纵轴显示标签的字体

numberAxis.setLabelFont(new Font("宋体", Font.BOLD, 22));

return chart;

}

public void setChart(JFreeChart chart) {

this.chart = chart;

}

// 返回一个CategoryDataset实例

private static XYDataset getDataSet() {

TimeSeries apple = new TimeSeries("苹果", Month.class);

apple.add(new Month(10, 2007), 3900);

apple.add(new Month(11, 2007), 900);

apple.add(new Month(12, 2007), 2500);

apple.add(new Month(1, 2008), 3900);

apple.add(new Month(2, 2008), 2000);

apple.add(new Month(3, 2008), 3300);

TimeSeries orange = new TimeSeries("桔子", Month.class);

orange.add(new Month(10, 2007), 3300);

orange.add(new Month(11, 2007), 2680);

orange.add(new Month(12, 2007), 2000);

orange.add(new Month(1, 2008), 1900);

orange.add(new Month(2, 2008), 2000);

orange.add(new Month(3, 2008), 2300);

TimeSeriesCollection dataset = new TimeSeriesCollection();

dataset.addSeries(apple);

dataset.addSeries(orange);

return dataset;

}

3)柱形图

/**

* @author zhengxinzao

public class BarChart3DAction extends ActionSupport {

private JFreeChart chart;

public JFreeChart getChart() {

chart = ChartFactory.createBarChart3D("学生成绩分析", "成绩", "人数",

getDataset(), PlotOrientation.VERTICAL, true, false, false);

chart

.setTitle(new TextTitle("学生成绩分析", new Font("黑体", Font.ITALIC,

22)));

LegendTitle legend = chart.getLegend();

// 修改图例的字体

legend.setItemFont(new Font("宋体", Font.ITALIC, 14));

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

// 取得横轴

CategoryAxis categoryAxis = plot.getDomainAxis();

categoryAxis.setLabelFont(new Font("宋体", Font.BOLD, 22));

// 分类标签以45度角倾斜

categoryAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);

categoryAxis.setTickLabelFont(new Font("宋体", Font.BOLD, 22));

// 取得纵轴

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

numberAxis.setLabelFont(new Font("宋体", Font.BOLD, 22));

return chart;

}

/**

* @return

private CategoryDataset getDataset() {

DefaultCategoryDataset dataset = new DefaultCategoryDataset();

dataset.addValue(2, "1班", "不及格");

dataset.addValue(4, "2班", "不及格");

dataset.addValue(5, "3班", "不及格");

dataset.addValue(8, "1班", "及格");

dataset.addValue(5, "2班", "及格");

dataset.addValue(10, "3班", "及格");

dataset.addValue(15, "1班", "中等");

dataset.addValue(10, "2班", "中等");

dataset.addValue(10, "3班", "中等");

dataset.addValue(15, "1班", "良好");

dataset.addValue(15, "2班", "良好");

dataset.addValue(15, "3班", "良好");

dataset.addValue(5, "1班", "优秀");

dataset.addValue(5, "2班", "优秀");

dataset.addValue(5, "3班", "优秀");

return dataset;

}

public void setChart(JFreeChart chart) {

this.chart = chart;

}

4.加入strust.xml:

</result>

</action>

</result>

</action>

</result>

</action>

</package>

5.jsp中使用：

<br />

<br />

<br />

struts2整合JFreechart 饼图、折线图、柱形图

struts2整合JFreechart 饼图、折线图、柱形图

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