ilabpublishedarticleaction.java

报表,关于ireport报表的一些源码(转)

package cn.edu.hlju.oa.kygl.action;

import javax.servlet.http.*;
import net.sf.jasperreports.engine.JasperPrint;
import java.util.Map;
import net.sf.jasperreports.engine.JasperReport;
import java.util.HashMap;
import cn.edu.hlju.oa.kygl.print.SRDataSourceFactory;
import java.io.File;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.engine.JRRuntimeException;
import javax.servlet.ServletContext;
import cn.edu.hlju.oa.kygl.db.DBConnection;
import java.util.TreeMap;
import cn.edu.hlju.oa.kygl.util.GlobalUtil;

/**
 * 出版著作信息情况
 */
public class ILabPublishedArticleAction extends GeneralAction {
    public ILabPublishedArticleAction() {
    }

    /**
     * 一些预处理操作
     *
     * @param request HttpServletRequest
     * @param response HttpServletResponse
     * @throws Exception
     * @todo Implement this cn.edu.hlju.oa.kygl.action.GeneralAction method
     */
    void preProcess(HttpServletRequest request, HttpServletResponse response) throws Exception {
        request.setCharacterEncoding("UTF-8");
        String action=request.getParameter("action");
        if( action == null)
            action = "reportQuery";

        if( action.equals("reportQuery")){
            actionType=REPORT_QUERY;
            actionPage="ILabOnlyQuery.jsp";
        }else if(action.equals("reportPreview")){
            actionType=REPORT_PREVIEW;
             //进入到打印预览页面
            actionPage="GeneralHTMLReportViewer.jsp";
         }
    }

    /**
     * 验证操作
     *
     * @param request HttpServletRequest
     * @param response HttpServletResponse
     * @throws Exception
     * @todo Implement this cn.edu.hlju.oa.kygl.action.GeneralAction method
     */
    void validate(HttpServletRequest request, HttpServletResponse response) throws Exception {
    }


    /**
     * 执行业务逻辑的操作
     *
     * @param request HttpServletRequest
     * @param response HttpServletResponse
     * @throws Exception
     * @todo Implement this cn.edu.hlju.oa.kygl.action.GeneralAction method
     */
    void executeBusiniess(HttpServletRequest request, HttpServletResponse response) throws Exception {
        switch (actionType) {
        case REPORT_QUERY:{
           TreeMap map = GlobalUtil.getILabInfo("001");
           request.setAttribute("QueryTitle","出版著作情况");
           request.setAttribute("ActionName","ILabPublishedArticleAction");
           request.setAttribute("ILabInfo",map);
        }
        break;
        case REPORT_PREVIEW: {
            ServletContext context = this.getServletConfig().getServletContext();
            String filePath = context.getRealPath("/Reports/出版著作情况/出版著作情况.jasper");
            //获得重点实验室的编码
            String iLabBm = request.getParameter("ILabSelection");

            //生成对Jasper文件的引用
            File reportFile = new File(filePath);
            if (!reportFile.exists())
                throw new JRRuntimeException(
                        "File WebappReport.jasper not found. The report design must be compiled first.");

            //报表装填
            JasperReport jasperReport = (JasperReport) JRLoader.loadObject(reportFile.getPath());
            Map parameters = new HashMap();

            JasperPrint jasperPrint =
                    JasperFillManager.fillReport(
                            jasperReport,
                            parameters,
                            SRDataSourceFactory.createILabPublishedArticleDS(iLabBm)
                    );
            //JasperViewer.viewReport(jasperPrint, false);
            request.getSession().setAttribute("JasperPrint", jasperPrint);
            request.getSession().setAttribute("pageTitle","出版著作情况");
        }
        break;
      }
  }


}