sj501action.java

基于STRUTS的试卷分析系统,实现JFREECHART画图片和POI生成EXCEL文档,开发平台:eclipse3.0+myclipse+tomcat5.0+mysql4.0

/*
 * 创建日期 2006-5-17
 *
 * TODO 要更改此生成的文件的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package com.hbnu.action;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.validator.DynaValidatorForm;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.data.category.DefaultCategoryDataset;

import com.hbnu.common.CodingConvert;

/**
 * @author wanpeng
 *
 * TODO 要更改此生成的类型注释的模板，请转至
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
public class Sj501Action  extends Action{
	public ActionForward execute(ActionMapping mapping, ActionForm form,
    		HttpServletRequest request, HttpServletResponse response) throws Exception {
		DynaValidatorForm SJ501DynaForm = (DynaValidatorForm) form;
		Map sj501de1Map = new HashMap();
    	Map sj501de2Map = new HashMap();
    	ArrayList scoreList = new ArrayList();
    	sj501de1Map = (Map) request.getSession().getAttribute("sj501de1Map");
    	sj501de2Map = (Map) request.getSession().getAttribute("sj501de2Map");
    	CodingConvert convert = new CodingConvert();
    	String Analyse = convert.toGb(String.valueOf( request.getSession().getAttribute("Analyse")));
    	String Advice  =convert.toGb(String.valueOf( request.getSession().getAttribute("Advice")));
    //	sj501de1Map = (Map) request.getSession().getAttribute("sj501de1Map");
    	//sj501de2Map = (Map) request.getSession().getAttribute("sj501de2Map");
    	SJ501DynaForm.set("Sj501de1Map",sj501de1Map);
    	SJ501DynaForm.set("Sj501de2Map",sj501de2Map);
    	scoreList =  (ArrayList)request.getSession().getAttribute("sj501List");
    	String[] area={"<40","40-49","50-59","60-69","70-79","80-89",">90"};
		DefaultCategoryDataset dataset=new DefaultCategoryDataset();//设置数据源
		JFreeChart chart1=ChartFactory.createBarChart3D("统计图","分数段","人数",   dataset,PlotOrientation.VERTICAL,false,false,false);
		int ssize = scoreList.size();
		    	for ( int i = 0; i < ssize; i++ ){
		   				 dataset.addValue(Integer.parseInt(String.valueOf((scoreList.get(i)))),"分数段",area[i]);
		   				 }
		    		CategoryPlot plot=chart1.getCategoryPlot();
		    		BarRenderer3D renderer1=new BarRenderer3D();
		    		renderer1.setItemLabelsVisible(true);//?示每?柱子上的??
		    		renderer1.setItemMargin(0.1);//?置每?柱子之?的距?
		    		plot.setRenderer(renderer1);//?上面?柱子的?置生效
		    		HttpSession session = request.getSession();
		    		String filename=ServletUtilities.saveChartAsJPEG(chart1,300,200,session); //生成?片，包括?片的大小
		    		String URL=request.getContextPath()+"/servlet/DisplayChart?filename="+filename;
		    		SJ501DynaForm.set("URLString",URL);
		    		SJ501DynaForm.set("Filename",filename);
		    		SJ501DynaForm.set("Analyse",Analyse);
		    		SJ501DynaForm.set("Advice",Advice);
		    		return (mapping.findForward("success"));
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
		
	}
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	

}