salestatchartservlet.java

网上商城代码

package com.fendou.manage.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;

import com.fendou.dao.GoodsManage;
import com.fendou.exception.GoodsException;
import com.fendou.util.chart.ChartUtil;
import com.fendou.vo.GoodsStat;

public class SaleStatChartServlet extends HttpServlet {

	
	public SaleStatChartServlet() {
		super();
	}

	public void destroy() {
		super.destroy(); 
	}

	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request,response);
	}

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
		GoodsManage goodsManage=new GoodsManage();
		List<GoodsStat> list;
		try {
			list = goodsManage.statGoods(null, null, "2009-3-1","2009-3-2");			
			JFreeChart chart = ChartUtil.createLineChart(list);
			ServletOutputStream out=response.getOutputStream();
			ChartUtilities.writeChartAsJPEG(out, chart, 500, 400);
		} catch (GoodsException e) {
			System.out.println(e);
			request.getRequestDispatcher("error.jsp").forward(request, response);
		}
		
		
	}

	
	public void init() throws ServletException {
		
	}

}