hexiaorepaction.java

文件的上传和下载的实现,用JAva编写,非常简单

package edu.whut.cwts.pg.hexiao;

import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.Action;
import javax.servlet.ServletOutputStream;

import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.JasperRunManager;
import net.sf.jasperreports.engine.util.JRLoader;

import java.util.Map;
import java.util.HashMap;
import java.io.UnsupportedEncodingException;
import java.io.IOException;

public class HexiaoRepAction extends Action {
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws UnsupportedEncodingException, IOException {
		request.setCharacterEncoding("gb2312");
		String hexiaoString = request.getParameter("test");
		System.out.println(hexiaoString);
		try {
			Map parameters = new HashMap();
			// parameters = TjxyBb.getxx(zddm,beginTime,endTime);
			HexiaoRepDataSourse datasource = new HexiaoRepDataSourse();
			datasource.setHexiaoString(hexiaoString);
			Map paraMap = new HashMap();
			try {
				JasperReport jasperReport = (JasperReport) JRLoader
						.loadObject("D:\\hexiao\\hexiaoReport.jasper");
				JRDataSource jrdatasouce = datasource.create(jasperReport);
				//paraMap.put("hexiaoString", hexiaoString);// 鍒惰〃鍗曚綅
			} catch (JRException e) {
				e.printStackTrace();
			}
			parameters = paraMap;
			JRDataSource jrdatasouce = (JRDataSource) parameters
					.get("jrdatasouce");

			byte[] bytes = JasperRunManager.runReportToPdf(
					"D:\\hexiao\\hexiaoReport.jasper", parameters, jrdatasouce

			);

			response.setContentType("application/pdf");
			response.setContentLength(bytes.length);
			ServletOutputStream ouputStream = response.getOutputStream();
			ouputStream.write(bytes, 0, bytes.length);
			ouputStream.flush();
			ouputStream.close();
			System.out.println("--------- jxhz Jasper end-------------");

		}

		catch (JRException e) {
			System.out.println("" + e);
			// response.sendRedirect("cw_error.jsp");

		} catch (Exception e) {
			System.out.println("" + e);
			// response.sendRedirect("cw_error.jsp");

		}
		// finally
		// {
		// System.out.println("鍑嗗