标签：
接到一个图表的需求，类似下面这样的
很明显，这是一个组合图形，由于系统用的是java,就选了jfreechart来处理,下面是代码.
jfreeChart对象有 categoryplot (只有一个？）
categoryplot 里面有render(多个就是组合图形了)
如果是组合图形，CategoryPlot 大有所用(请去看其api) 下面三个处理，都是从这个类找到的api
render（渲染，这里就是对折线图,XX图的描述了,不同的图不同render,比如 BarRenderer代表柱状图,LineAndShapeRenderer是折线图)
AXIS代表坐标轴,
//写个标题
//当遇到下面这样的横坐标
main函数
package org.dgm.test.theme.chart;
import java.awt.Font;
import java.io.IOException;
import java.util.List;
import org.dgm.test.util.TestUtils;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DatasetRenderingOrder;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.TextAnchor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CombineChart {
static Logger log = LoggerFactory.getLogger(CombineChart.class);
public static void main(String[] args) throws IOException {
DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
dataset1.addValue(200, "1", "上上周");
dataset1.addValue(300, "1", "上周");
dataset1.addValue(400, "1", "这周");
DefaultCategoryDataset lineDataset = new DefaultCategoryDataset();// 折线图数据
lineDataset.addValue(50, "1", " ");
lineDataset.addValue(30, "1", "");
lineDataset.addValue(45, "1", " ");
String title = "";
String categoryAxisLabel = "";
String valueAxisLabel = "";
log.info(createFeePieChart( dataset1, 420, 300,
title, categoryAxisLabel, valueAxisLabel, lineDataset));
}
private static String createFeePieChart(
DefaultCategoryDataset dataset, int nWidth, int nHeight,
String title, String categoryAxisLabel, String valueAxisLabel,
DefaultCategoryDataset lineDataset) throws
IOException {
JFreeChart chart = ChartFactory.createBarChart(title,
categoryAxisLabel, valueAxisLabel, dataset,
PlotOrientation.VERTICAL, false, false, false);
StandardChartTheme standardChartTheme = new StandardChartTheme("CN");
// 设置标题字体
standardChartTheme.setExtraLargeFont(new Font("隶书", Font.BOLD, 20));
// 设置图例的字体
standardChartTheme.setRegularFont(new Font("宋书", Font.PLAIN, 15));
// 设置轴向的字体
standardChartTheme.setLargeFont(new Font("宋书", Font.PLAIN, 15));
// 应用主题样式
ChartFactory.setChartTheme(standardChartTheme);
CategoryPlot plot = (CategoryPlot) chart.getCategoryPlot();
BarRenderer renderer = (BarRenderer) plot.getRenderer();
// 显示条目标签
renderer.setBaseItemLabelsVisible(true);
// 设置条目标签生成器,在JFreeChart1.0.6之前可以通过renderer.setItemLabelGenerator(CategoryItemLabelGenerator
// generator)方法实现，但是从版本1.0.6开始有下面方法代替
renderer
.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
// renderer.setBaseSeriesVisible(false);
// 设置条目标签显示的位置,outline表示在条目区域外,baseline_center表示基于基线且居中
renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(
ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_CENTER));
// 折线图
CategoryPlot categoryplot = (CategoryPlot) chart.getPlot();// 图本身
categoryplot.setDataset(1, lineDataset);// 放折线图数据
// BarRenderer lineRenderer = new BarRenderer();
LineAndShapeRenderer lineRenderer = new LineAndShapeRenderer();
lineRenderer
.setBaseToolTipGenerator(new StandardCategoryToolTipGenerator());
lineRenderer.setBaseItemLabelsVisible(true);
lineRenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
lineRenderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(
ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_CENTER));
// categoryplot.getDomainAxis(0).setVisible(false);
categoryplot.setRenderer(1, lineRenderer);
log.info(categoryplot.getDomainAxisCount()+"");
CategoryAxis c1 = new CategoryAxis("柱状图");
CategoryAxis c2 = new CategoryAxis("");
CategoryAxis[] cc = {c1,c2};
categoryplot.setDomainAxes(cc);
List<Integer> axisIndices = new java.util.ArrayList<Integer>(1);
axisIndices.add(1);
categoryplot.mapDatasetToDomainAxes(1, axisIndices);
categoryplot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
return TestUtils.export(chart,"d:/abc/cd/");
}
}
被引用到的java类
ExportUtils:
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ----------------
* ExportUtils.java
* ----------------
* (C) Copyright 2014, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 27-Jun-2014 : Version 1 (DG);
*
*/
package org.dgm.test.util;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import javax.imageio.ImageIO;
import org.jfree.chart.util.ParamChecks;
import org.jfree.ui.Drawable;
/**
* Utility functions for exporting charts to SVG and PDF format.
*
* @since 1.0.18
*/
public class ExportUtils {
/**
* Returns <code>true</code> if JFreeSVG is on the classpath, and
* <code>false</code> otherwise. The JFreeSVG library can be found at
* http://www.jfree.org/jfreesvg/
*
* @return A boolean.
*/
public static boolean isJFreeSVGAvailable() {
Class<?> svgClass = null;
try {
svgClass = Class.forName("org.jfree.graphics2d.svg.SVGGraphics2D");
} catch (ClassNotFoundException e) {
// svgClass will be null so the function will return false
}
return (svgClass != null);
}
/**
* Returns <code>true</code> if OrsonPDF is on the classpath, and
* <code>false</code> otherwise. The OrsonPDF library can be found at
* http://www.object-refinery.com/pdf/
*
* @return A boolean.
*/
public static boolean isOrsonPDFAvailable() {
Class<?> pdfDocumentClass = null;
try {
pdfDocumentClass = Class.forName("com.orsonpdf.PDFDocument");
} catch (ClassNotFoundException e) {
// pdfDocument class will be null so the function will return false
}
return (pdfDocumentClass != null);
}
/**
* Writes the current content to the specified file in SVG format. This
* will only work when the JFreeSVG library is found on the classpath.
* Reflection is used to ensure there is no compile-time dependency on
* JFreeSVG.
*
* @param drawable the drawable (<code>null</code> not permitted).
* @param w the chart width.
* @param h the chart height.
* @param file the output file (<code>null</code> not permitted).
*/
public static void writeAsSVG(Drawable drawable, int w, int h,
File file) {
if (!ExportUtils.isJFreeSVGAvailable()) {
throw new IllegalStateException(
"JFreeSVG is not present on the classpath.");
}
ParamChecks.nullNotPermitted(drawable, "drawable");
ParamChecks.nullNotPermitted(file, "file");
try {
Class<?> svg2Class = Class.forName(
"org.jfree.graphics2d.svg.SVGGraphics2D");
Constructor<?> c1 = svg2Class.getConstructor(int.class, int.class);
Graphics2D svg2 = (Graphics2D) c1.newInstance(w, h);
Rectangle2D drawArea = new Rectangle2D.Double(0, 0, w, h);
drawable.draw(svg2, drawArea);
Class<?> svgUtilsClass = Class.forName(
"org.jfree.graphics2d.svg.SVGUtils");
Method m1 = svg2Class.getMethod("getSVGElement", (Class[]) null);
String element = (String) m1.invoke(svg2, (Object[]) null);
Method m2 = svgUtilsClass.getMethod("writeToSVG", File.class,
String.class);
m2.invoke(svgUtilsClass, file, element);
} catch (ClassNotFoundException ex) {
throw new RuntimeException(ex);
} catch (InstantiationException ex) {
throw new RuntimeException(ex);
} catch (IllegalAccessException ex) {
throw new RuntimeException(ex);
} catch (NoSuchMethodException ex) {
throw new RuntimeException(ex);
} catch (SecurityException ex) {
throw new RuntimeException(ex);
} catch (IllegalArgumentException ex) {
throw new RuntimeException(ex);
} catch (InvocationTargetException ex) {
throw new RuntimeException(ex);
}
}
/**
* Writes a {@link Drawable} to the specified file in PDF format. This
* will only work when the OrsonPDF library is found on the classpath.
* Reflection is used to ensure there is no compile-time dependency on
* OrsonPDF.
*
* @param drawable the drawable (<code>null</code> not permitted).
* @param w the chart width.
* @param h the chart height.
* @param file the output file (<code>null</code> not permitted).
*/
public static final void writeAsPDF(Drawable drawable,
int w, int h, File file) {
if (!ExportUtils.isOrsonPDFAvailable()) {
throw new IllegalStateException(
"OrsonPDF is not present on the classpath.");
}
ParamChecks.nullNotPermitted(drawable, "drawable");
ParamChecks.nullNotPermitted(file, "file");
try {
Class<?> pdfDocClass = Class.forName("com.orsonpdf.PDFDocument");
Object pdfDoc = pdfDocClass.newInstance();
Method m = pdfDocClass.getMethod("createPage", Rectangle2D.class);
Rectangle2D rect = new Rectangle(w, h);
Object page = m.invoke(pdfDoc, rect);
Method m2 = page.getClass().getMethod("getGraphics2D");
Graphics2D g2 = (Graphics2D) m2.invoke(page);
Rectangle2D drawArea = new Rectangle2D.Double(0, 0, w, h);
drawable.draw(g2, drawArea);
Method m3 = pdfDocClass.getMethod("writeToFile", File.class);
m3.invoke(pdfDoc, file);
} catch (ClassNotFoundException ex) {
throw new RuntimeException(ex);
} catch (InstantiationException ex) {
throw new RuntimeException(ex);
} catch (IllegalAccessException ex) {
throw new RuntimeException(ex);
} catch (NoSuchMethodException ex) {
throw new RuntimeException(ex);
} catch (SecurityException ex) {
throw new RuntimeException(ex);
} catch (IllegalArgumentException ex) {
throw new RuntimeException(ex);
} catch (InvocationTargetException ex) {
throw new RuntimeException(ex);
}
}
/**
* Writes the current content to the specified file in PNG format.
*
* @param drawable the drawable (<code>null</code> not permitted).
* @param w the chart width.
* @param h the chart height.
* @param file the output file (<code>null</code> not permitted).
*
* @throws FileNotFoundException if the file is not found.
* @throws IOException if there is an I/O problem.
*/
public static void writeAsPNG(Drawable drawable, int w, int h,
File file) throws FileNotFoundException, IOException {
BufferedImage image = new BufferedImage(w, h,
BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = image.createGraphics();
drawable.draw(g2, new Rectangle(w, h));
OutputStream out = new BufferedOutputStream(new FileOutputStream(file));
try {
ImageIO.write(image, "png", out);
}
finally {
out.close();
}
}
/**
* Writes the current content to the specified file in JPEG format.
*
* @param drawable the drawable (<code>null</code> not permitted).
* @param w the chart width.
* @param h the chart height.
* @param file the output file (<code>null</code> not permitted).
*
* @throws FileNotFoundException if the file is not found.
* @throws IOException if there is an I/O problem.
*/
public static void writeAsJPEG(Drawable drawable, int w, int h,
File file) throws FileNotFoundException, IOException {
BufferedImage image = new BufferedImage(w, h,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = image.createGraphics();
drawable.draw(g2, new Rectangle(w, h));
OutputStream out = new BufferedOutputStream(new FileOutputStream(file));
try {
ImageIO.write(image, "jpg", out);
}
finally {
out.close();
}
}
}
TestUtils:
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2014, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* --------------
* TestUtils.java
* --------------
* (C) Copyright 2007-2014, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 08-Jun-2007 : Version 1 (DG);
* 19-Mar-2014 : Renamed TestUtils (DG);
*
*/
package org.dgm.test.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
import org.jfree.ui.Drawable;
/**
* Some utility methods for use by the testing code.
*/
public class TestUtils {
/**
* Returns <code>true</code> if the collections contains any object that
* is an instance of the specified class, and <code>false</code> otherwise.
*
* @param collection the collection.
* @param c the class.
*
* @return A boolean.
*/
public static boolean containsInstanceOf(Collection collection, Class c) {
Iterator iterator = collection.iterator();
while (iterator.hasNext()) {
Object obj = iterator.next();
if (obj != null && obj.getClass().equals(c)) {
return true;
}
}
return false;
}
/**
* Returns an object that is the deserialised form of the supplied object.
* The original object is serialised to a byte array then deserialised
* and returned.
*
* @param original the original object (<code>null</code> not permitted).
*
* @return A serialised and deserialised object.
*/
public static <T extends Serializable> T serialised(T original) {
T result = null;
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
ObjectOutput out;
try {
out = new ObjectOutputStream(buffer);
out.writeObject(original);
out.close();
ObjectInput in = new ObjectInputStream(
new ByteArrayInputStream(buffer.toByteArray()));
result = (T) in.readObject();
in.close();
} catch (IOException e) {
throw new RuntimeException(e);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
return result;
}
/**
* 导出 到 path
* @param drawable
* @param path 如 "d:/abc/cd/"
*/
public static String export(Drawable drawable,String path){
int width = 800;
int heigh = 520;
Date d = new Date();
String filename = path+d.getTime()+".png";
try {
ExportUtils.writeAsPNG(drawable, width, heigh,new File(filename));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return filename;
}
}
用到的两个util类都是 从github 中的 demo下来的,作了一点点改动
https://github.com/huawumingguo/jfreechart-fse.git
依赖的版本:
<dependency>
<groupId>org.jfree</groupId>
<artifactId>jfreechart</artifactId>
<version>1.0.15</version>
</dependency>
main函数有些log,呃, 这个自行屏蔽吧。其它依赖倒是没有了,
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原文地址：http://my.oschina.net/u/110531/blog/371748
