------------------------------------------
servlet Post 테스트
------------------------------------------
* test.html
<html>
<head>
<title>서블릿테스트</title>
</head>
<boady>
<form method="post" action="servlet/PostTest">
<input type="submit" value="post요청">
</form>
</body>
</html>
* PostTest.java
package test;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import java.text.*;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultPieDataset;
import java.awt.Dimension;
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class PostTest extends HttpServlet
{
private static CategoryDataset createDataset()
{
DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();
defaultcategorydataset.addValue(22000, "PC1", "PC1");
defaultcategorydataset.addValue(20200, "PC2", "PC2");
defaultcategorydataset.addValue(21050, "PC3", "PC3");
defaultcategorydataset.addValue(10200, "PC4", "PC4");
return defaultcategorydataset;
}
private static JFreeChart createChart(CategoryDataset categorydataset)
{
JFreeChart jfreechart = ChartFactory.createBarChart3D("", "A-mart", "$", categorydataset, PlotOrientation.VERTICAL, true, true, false);
CategoryPlot categoryplot = jfreechart.getCategoryPlot();
CategoryAxis categoryaxis = categoryplot.getDomainAxis();
categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(0.39269908169872414D));
CategoryItemRenderer categoryitemrenderer = categoryplot.getRenderer();
categoryitemrenderer.setItemLabelsVisible(true);
BarRenderer barrenderer = (BarRenderer)categoryitemrenderer;
barrenderer.setMaxBarWidth(0.050000000000000003D);
return jfreechart;
}
public static String getDemoDescription()
{
return "A bar chart rendered with a '3D effect'.";
}
public void doPost(HttpServletRequest req, HttpServletResponse response) throws ServletException, IOException {
CategoryDataset categorydataset = createDataset();
JFreeChart jfreechart = createChart(categorydataset);
response.setContentType("image/jpeg");
ServletOutputStream objSos=response.getOutputStream();
ChartUtilities.writeChartAsJPEG(objSos,jfreechart,600,400);
}
}
* web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>PostTest</servlet-name>
<servlet-class>test.PostTest</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>PostTest</servlet-name>
<url-pattern>/PostTest</url-pattern>
</servlet-mapping>
</web-app>
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