JasperReport+iReport+Applet+Servlet打造报表-ASP教程-爱易网页

JasperReport+iReport+Applet+Servlet打造报表

日期：2014-05-17　浏览次数：21105 次

JasperReport+iReport+Applet+Servlet制作报表

项目是B/S的，标示层使用的是Openlaszlo，客户要求在打印的时候不需要选择打印的纸张类型，报表显示就直接打印,所以我在客户做了一个小应用程序。

需要的jar有:msbase.jar;mssqlserver.jar;msutil.jar;jasperreports-2.0.5-applet.jar;

jasperreports-1.3.3.jar;jasperreports-2.0.5-javaflow.jar

需要使用Ireport设计模板，放在reports目录下，载入*.jasper文件

<%@ page contentType="text/html;charset=UTF-8"%>
<%@page import="java.util.Enumeration"%>
<%@page import="java.net.URLDecoder"%>
<%
   String sql = request.getParameter("sql");
   sql="select * from authors";
   System.out.println("viewer.jsp  =========:"+sql);
  // System.out.println("viewer.jsp  =========:"+new String(condition.getBytes("ISO8859_1"),"UTF-8"));
%>
<html>
	<head>
	</head>
	<body>
		<!--"CONVERTED_APPLET"-->
		<!-- HTML CONVERTER -->
		<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
			codebase="http://java.sun.com/update/1.5.0/jinstall-1_5-windows-i586.cab#Version=5,0,0,5"
			WIDTH="100%" HEIGHT="100%">
			<PARAM NAME=CODE VALUE="ViewerApplet.class">
			<param name="scriptable" value="false">
			<PARAM NAME=CODEBASE VALUE="applet">
			<PARAM NAME=ARCHIVE
				VALUE="jasperreports-2.0.5-javaflow.jar,jasperreports-2.0.5-applet.jar,commons-collections-3.1.jar">
			<param name="type" value="application/x-java-applet;version=1.5">
			<PARAM NAME="sql" VALUE="<%=sql%>">
			<comment>
			<embed type="application/x-java-applet;version=1.5"
				\
            ARCHIVE="jasperreports-2.0.5-javaflow.jar,jasperreports-2.0.5-applet.jar,commons-collections-3.1.jar"
				\
            WIDTH="100%" 
            	\
            HEIGHT="100%"
				\
            CODE="ViewerApplet.class"
				\
            CODEBASE="applet"
				\
            ARCHIVE="jasperreports-2.0.5-javaflow.jar,jasperreports-2.0.5-applet.jar,commons-collections-3.1.jar"
				\
            scriptable="false"
				\
            sql="<%=sql%>"
				\
            scriptable=false
			pluginspage="http://java.sun.com/products/plugin/index.html#download">
				<noembed>
					</XMP>
				</noembed>
			</embed>
			</comment>
		</object>
	</body>
</html>

?做一个ViewerApplet的类，继承JApplet

import java.awt.BorderLayout;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
import java.net.URLEncoder;

import javax.swing.JApplet;
import javax.swing.JOptionPane;

import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.view.JRViewer;

public class ViewerApplet extends JApplet {

	public ViewerApplet() {
		initComponents();
	}

	private javax.swing.JPanel pnlMain;

	public void init() {

		try {
			//获取viewer.jsp的sql参数
			String sql = getParameter("sql");
			//使用URLEncoder对sql语句进行encode
			sql = URLEncoder.encode(sql, "UTF-8");
			//提交到servlet，使用servlet访问服务器端数据
			URL url = new URL(getCodeBase(), "../servlet/appletServlet?sql="
					+ sql);
			if (url != null) {
				//获取服务器的传递过来的JasperPrint对象
				JasperPrint jasperPrint = (JasperPrint) JRLoader
						.loadObject(url);
				//创建一个JRViewer
				 JRViewer viewer = new JRViewer(jasperPrint);
				 this.pnlMain.add(viewer, BorderLayout.CENTER);
			}
		} catch (Exception e) {
			StringWriter swriter = new StringWriter();
			PrintWriter pwriter = new PrintWriter(swriter);
			e.printStackTrace(pwriter);
			JOptionPane.showMessageDialog(this, swriter.toString());
		}
	}

	private void initComponents() {// GEN-BEGIN:initComponents
		pnlMain = new javax.swing.JPanel();
		pnlMain.setLayout(new java.awt.BorderLayout());
		getContentPane().add(pnlMain, java.awt.BorderLayout.CENTER);
	}

}

?创建一个AppletServlet类

package com.gddzmr.servlet;

import java.io.IOException;
import java.io.ObjectOutputStream;
import javax.servlet.ServletException;
impor

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JasperReport+iReport+Applet+Servlet打造报表

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