对于jasperreport打印这个功能，遇到了一大堆问题，也只能一点一点解决我：
1.现在我用的是jasperreport.jar是4.6版本。
(1).因为网上查到：6.0以上版本已经不再支持java打印功能，只能支持页面打印。
(2).如过可以用浏览器打印，那这个打印问题已经解决了
(3).我不想再用5.6版本重新测试一遍了，因为官网给的jasperreport-apples.jar例子里面有很多问题，不想在是一遍
2.对于程序的需要,：
(1).最好在webapp(根目录)下新建一个applets(自命名)文件夹
(2).applets文件夹放入jre1.6.exe或以上版本,因为jasperreport-4.5是jre1.6写的
(3).从官网的jasperreport-4.6例子中,找到commons-collections.jar、commons-digester.jar、commons-logging.jar，和自己的log4j.jar、log4j-core.jar，放入applets
3.对于jasperreports-applet-4.6.0.jar，也放入applets，但是等到测试的时候，这个jar包里有很多问题，如果提示这个class找不到，就从jasperreoprt-4.6.jar中粘进去
创建jar包
(1).官网给的例子jasperreport-applets-4.6.jar解压后，复制default.jasperreports.properties、net,新建文件夹，粘进去
(2).将缺少的class从jasperreport-4.6.jar粘到你放的位置对应的位置
(3).ctrl+p命令，将default.jasperreports.properties、net生成一个jasperreport-applets-4.6.jar,放入applets
4.这是我把官网例子改了以后的代码
import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.engine.JasperPrintManager; import net.sf.jasperreports.engine.util.JRLoader; import javax.swing.*; import java.io.PrintWriter; import java.io.StringWriter; import java.net.URL; /** * Created by 朱星翰 on 2017/9/14. */ public class JRPrinterApplet extends javax.swing.JApplet { private URL url; private JasperPrint jasperPrint; public JRPrinterApplet(){ } public void init() { String strUrl = getParameter("REPORT_URL"); if (strUrl != null) { try { url = new URL(getCodeBase(), strUrl); } catch (Exception e) { StringWriter swriter = new StringWriter(); PrintWriter pwriter = new PrintWriter(swriter); e.printStackTrace(pwriter); JOptionPane.showMessageDialog(this, swriter.toString()); } }else { JOptionPane.showMessageDialog(this, "REPORT_URL:不能为空！"); } } @Override public void start() { if (url != null) { if (jasperPrint == null) { try { jasperPrint = (JasperPrint) JRLoader.loadObject(url); } catch (Exception e) { StringWriter swriter = new StringWriter(); PrintWriter pwriter = new PrintWriter(swriter); e.printStackTrace(pwriter); JOptionPane.showMessageDialog(this, swriter.toString()); } } if (jasperPrint != null) { final JasperPrint print = jasperPrint; Thread thread = new Thread(new Runnable() { public void run() { try { JasperPrintManager.printReport(print, true); } catch (Exception e) { StringWriter swriter = new StringWriter(); PrintWriter pwriter = new PrintWriter(swriter); e.printStackTrace(pwriter); JOptionPane.showMessageDialog(null, swriter.toString()); } } }); thread.start(); } else { JOptionPane.showMessageDialog(this, "报表是空的！"); } } else { JOptionPane.showMessageDialog(this, "REPORT_URL:不能为空！"); } } }
import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.engine.util.JRLoader; import javax.swing.*; import java.io.PrintWriter; import java.io.StringWriter; import java.net.URL; /** * Created by 朱星翰 on 2017/9/14. */ public class JRViewApplet extends javax.swing.JApplet { private URL url; private JasperPrint jasperPrint; public JRViewApplet(){ } public void init() { String strUrl = getParameter("REPORT_URL"); if (strUrl != null) { try { url = new URL(getCodeBase(), strUrl); } catch (Exception e) { StringWriter swriter = new StringWriter(); PrintWriter pwriter = new PrintWriter(swriter); e.printStackTrace(pwriter); JOptionPane.showMessageDialog(this, swriter.toString()); } }else { JOptionPane.showMessageDialog(this, "REPORT_URL:不能为空！"); } } @Override public void start() { // Add your handling code here: if (url != null) { try { if (jasperPrint == null) { jasperPrint = (JasperPrint) JRLoader.loadObject(url); } if (jasperPrint != null) { ViewerFrame viewerFrame = new ViewerFrame(this.getAppletContext(), jasperPrint); viewerFrame.show(); }else { JOptionPane.showMessageDialog(this, "报表是空的！"); } }catch (Exception e) { StringWriter swriter = new StringWriter(); PrintWriter pwriter = new PrintWriter(swriter); e.printStackTrace(pwriter); JOptionPane.showMessageDialog(this, swriter.toString()); } } else { JOptionPane.showMessageDialog(this, "REPORT_URL:不能为空！"); } } }
/* * JasperReports - Free Java Reporting Library. * Copyright (C) 2001 - 2011 Jaspersoft Corporation. All rights reserved. * http://www.jaspersoft.com * * Unless you have purchased a commercial license agreement from Jaspersoft, * the following license terms apply: * * This program is part of JasperReports. * * JasperReports is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * JasperReports is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with JasperReports. If not, see <http://www.gnu.org/licenses/>. */ import javax.swing.JButton; import javax.swing.JOptionPane; import net.sf.jasperreports.engine.JRException; import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.view.JRViewer; /** * @author Teodor Danciu (teodord@users.sourceforge.net) * @version 4.6.0 */ public class JRViewerPlus extends JRViewer { /*protected JButton btnPlus = new javax.swing.JButton();*/ public JRViewerPlus(JasperPrint jrPrint) throws JRException { super(jrPrint); tlbToolBar.remove(btnSave); tlbToolBar.remove(btnReload); /*btnPlus = new javax.swing.JButton(); btnPlus.setToolTipText("Plus..."); btnPlus.setText("Plus..."); btnPlus.setPreferredSize(new java.awt.Dimension(80, 23)); btnPlus.setMaximumSize(new java.awt.Dimension(80, 23)); btnPlus.setMinimumSize(new java.awt.Dimension(80, 23)); btnPlus.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { btnPlusActionPerformed(evt); } }); tlbToolBar.add(btnPlus, 0);*/ } protected void setZooms() { this.zooms = new int[]{33, 66, 100, 133, 166, 200, 233}; this.defaultZoomIndex = 2; } /*protected void btnPlusActionPerformed(java.awt.event.ActionEvent evt) { JOptionPane.showMessageDialog(this, "I just wanted to let you know that you can extend the JRViewer to customize it. The button you have pushed was added this way."); }*/ }
/* * JasperReports - Free Java Reporting Library. * Copyright (C) 2001 - 2011 Jaspersoft Corporation. All rights reserved. * http://www.jaspersoft.com * * Unless you have purchased a commercial license agreement from Jaspersoft, * the following license terms apply: * * This program is part of JasperReports. * * JasperReports is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * JasperReports is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with JasperReports. If not, see <http://www.gnu.org/licenses/>. */ import net.sf.jasperreports.engine.JRException; import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.view.JRViewer; /** * @author Teodor Danciu (teodord@users.sourceforge.net) * @version 4.6.0 */ public class JRViewerSimple extends JRViewer { /** * */ public JRViewerSimple(JasperPrint jrPrint) throws JRException { super(jrPrint); tlbToolBar.remove(btnSave); tlbToolBar.remove(btnReload); } }
/* * JasperReports - Free Java Reporting Library. * Copyright (C) 2001 - 2011 Jaspersoft Corporation. All rights reserved. * http://www.jaspersoft.com * * Unless you have purchased a commercial license agreement from Jaspersoft, * the following license terms apply: * * This program is part of JasperReports. * * JasperReports is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * JasperReports is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with JasperReports. If not, see <http://www.gnu.org/licenses/>. */ import java.applet.AppletContext; import java.awt.BorderLayout; import java.net.MalformedURLException; import java.net.URL; import javax.swing.JOptionPane; import net.sf.jasperreports.engine.JRException; import net.sf.jasperreports.engine.JRPrintHyperlink; import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.view.JRHyperlinkListener; /** * @author Teodor Danciu (teodord@users.sourceforge.net) * @version 4.6.0 */ public class ViewerFrame extends javax.swing.JFrame implements JRHyperlinkListener { private AppletContext appletContext; public ViewerFrame(AppletContext appletContext, JasperPrint jasperPrint) throws JRException { initComponents(); this.appletContext = appletContext; JRViewerPlus viewer = new JRViewerPlus(jasperPrint); viewer.addHyperlinkListener(this); this.pnlMain.add(viewer, BorderLayout.CENTER); } public void gotoHyperlink(JRPrintHyperlink hyperlink) { switch(hyperlink.getHyperlinkTypeValue()) { case REFERENCE : { try { this.appletContext.showDocument(new URL(hyperlink.getHyperlinkReference()), "_blank"); } catch (MalformedURLException e) { JOptionPane.showMessageDialog(this, e.getMessage()); } break; } case LOCAL_ANCHOR : case LOCAL_PAGE : { break; } case REMOTE_ANCHOR : case REMOTE_PAGE : { JOptionPane.showMessageDialog(this, "Implement your own JRHyperlinkListener to manage this type of event."); break; } case NONE : default : { break; } } } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ private void initComponents() {//GEN-BEGIN:initComponents pnlMain = new javax.swing.JPanel(); setTitle("预览"); setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE); pnlMain.setLayout(new java.awt.BorderLayout()); getContentPane().add(pnlMain, java.awt.BorderLayout.CENTER); pack(); java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize(); int width=1000; int height=800; setSize(new java.awt.Dimension(width, height)); setLocation((screenSize.width-width)/2,(screenSize.height-height)/2); }//GEN-END:initComponents // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JPanel pnlMain; // End of variables declaration//GEN-END:variables }
(1).把这些代码放入src下，生成class代码
(2).将class生成jar，我命名print.jar
(3).jar -cvf print.jar *.class (生成jar包)，放入applets
5.签名
1.创建一个证书
keytool -genkey -validity 1800 -keystore applet.store -alias applet
2.导出证书文件
keytool -export -keystore applet.store -alias applet -file applet.cer
3.对jar包进行签名
jarsigner -keystore applet.store jasperreports-applet-4.6.0.jar applet
jarsigner -keystore applet.store print.jar applet (注意：必须签名这个jar包，要不然打印报错)
6.页面，自己处理了很多js，
<a title="打印" onclick="is_ie('JRPrinterApplet')"><img src="${ctx}/static/Images/print.jpg" alt=""></a> <a title="预览" onclick="is_ie('JRViewApplet')" ><img src="${ctx}/static/Images/look.png" alt=""></a></a> <a title="更方便的使用打印功能" style="font-size: 11px" href="${ctx}/applets/applet.cer">是否安装安全证书？</a>
function is_ie(str){ if ((navigator.userAgent.indexOf('MSIE') >= 0 && navigator.userAgent.indexOf('Opera') < 0)||(navigator.userAgent.indexOf("Trident") > -1 && navigator.userAgent.indexOf("rv") > -1)){ var archive='print.jar,jasperreports-applet-4.6.0.jar,commons-logging-1.1.1.jar,commons-collections-2.1.1.jar,commons-digester-2.1.jar'; var REPORT_URL='${ctx}/jasper/all_printJasper?'; var codebase='${ctx}/applets' var file='${ctx}/applets/jre-6u45-windows-i586.exe'; var scriptable=false var type='application/x-java-applet;version=1.6.0'; $.each(args,function(key,value){ REPORT_URL+=key+"="+value+"&"; }); REPORT_URL=change(REPORT_URL); REPORT_URL=encodeURI(REPORT_URL); var write='正在处理'+(str=='JRPrinterApplet'?'打印':'预览')+'...' + '<object classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" width = "0" height = "0" codebase="'+file+'" mayscript>' + '<param name = "code" value = "'+str+'.class" >' + '<param name = "codebase" value = "'+codebase+'" >' + '<param name = "archive" value = "'+archive+'" >' + '<param name="type" value="'+type+'">' + '<param name="scriptable" value="'+scriptable+'">' + '<param name = "REPORT_URL" value ="'+REPORT_URL+'">' + '<comment>' + '<embed type="'+type+'" code="'+str+'.class" java_codebase="'+codebase+'" archive="'+archive+'" scriptable='+scriptable+' pluginspage="'+file+'" >' + '<noembed></noembed>' + '</embed>' + '</comment>' + '</object>' document.write(write); }else { alert('预览打印仅支持ie浏览器') } }
最后，终于完成了，总之，觉的jasperreport-applets-4.6官网给的好多错误地方，只有慢慢去找问题