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

importnet.sf.jasperreports.engine.JasperPrint;importnet.sf.jasperreports.engine.JasperPrintManager;importnet.sf.jasperreports.engine.util.JRLoader;import javax.swing.*;importjava.io.PrintWriter;importjava.io.StringWriter;importjava.net.URL;/*** Created by 朱星翰 on 2017/9/14.*/

public class JRPrinterApplet extendsjavax.swing.JApplet {privateURL url;privateJasperPrint jasperPrint;publicJRPrinterApplet(){

}public voidinit() {

String strUrl= getParameter("REPORT_URL");if (strUrl != null) {try{

url= newURL(getCodeBase(), strUrl);

}catch(Exception e) {

StringWriter swriter= newStringWriter();

PrintWriter pwriter= newPrintWriter(swriter);

e.printStackTrace(pwriter);

JOptionPane.showMessageDialog(this, swriter.toString());

}

}else{

JOptionPane.showMessageDialog(this, "REPORT_URL:不能为空！");

}

}

@Overridepublic voidstart() {if (url != null) {if (jasperPrint == null) {try{

jasperPrint=(JasperPrint) JRLoader.loadObject(url);

}catch(Exception e) {

StringWriter swriter= newStringWriter();

PrintWriter pwriter= newPrintWriter(swriter);

e.printStackTrace(pwriter);

JOptionPane.showMessageDialog(this, swriter.toString());

}

}if (jasperPrint != null) {final JasperPrint print =jasperPrint;

Thread thread= new Thread(newRunnable()

{public voidrun()

{try{

JasperPrintManager.printReport(print,true);

}catch(Exception e) {

StringWriter swriter= newStringWriter();

PrintWriter pwriter= newPrintWriter(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！");

}

}

}

importnet.sf.jasperreports.engine.JasperPrint;importnet.sf.jasperreports.engine.util.JRLoader;import javax.swing.*;importjava.io.PrintWriter;importjava.io.StringWriter;importjava.net.URL;/*** Created by 朱星翰 on 2017/9/14.*/

public class JRViewApplet extendsjavax.swing.JApplet {privateURL url;privateJasperPrint jasperPrint;publicJRViewApplet(){

}public voidinit() {

String strUrl= getParameter("REPORT_URL");if (strUrl != null) {try{

url= newURL(getCodeBase(), strUrl);

}catch(Exception e) {

StringWriter swriter= newStringWriter();

PrintWriter pwriter= newPrintWriter(swriter);

e.printStackTrace(pwriter);

JOptionPane.showMessageDialog(this, swriter.toString());

}

}else{

JOptionPane.showMessageDialog(this, "REPORT_URL:不能为空！");

}

}

@Overridepublic voidstart() {//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= newStringWriter();

PrintWriter pwriter= newPrintWriter(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 .*/

importjavax.swing.JButton;importjavax.swing.JOptionPane;importnet.sf.jasperreports.engine.JRException;importnet.sf.jasperreports.engine.JasperPrint;importnet.sf.jasperreports.view.JRViewer;/***@authorTeodor Danciu (teodord@users.sourceforge.net)

*@version4.6.0*/

public class JRViewerPlus extendsJRViewer {/*protected JButton btnPlus = new javax.swing.JButton();*/

public JRViewerPlus(JasperPrint jrPrint) throwsJRException {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 voidsetZooms() {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.\n 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 .*/

importnet.sf.jasperreports.engine.JRException;importnet.sf.jasperreports.engine.JasperPrint;importnet.sf.jasperreports.view.JRViewer;/***@authorTeodor Danciu (teodord@users.sourceforge.net)

*@version4.6.0*/

public class JRViewerSimple extendsJRViewer {/****/

public JRViewerSimple(JasperPrint jrPrint) throwsJRException {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 .*/

importjava.applet.AppletContext;importjava.awt.BorderLayout;importjava.net.MalformedURLException;importjava.net.URL;importjavax.swing.JOptionPane;importnet.sf.jasperreports.engine.JRException;importnet.sf.jasperreports.engine.JRPrintHyperlink;importnet.sf.jasperreports.engine.JasperPrint;importnet.sf.jasperreports.view.JRHyperlinkListener;/***@authorTeodor Danciu (teodord@users.sourceforge.net)

*@version4.6.0*/

public class ViewerFrame extends javax.swing.JFrame implementsJRHyperlinkListener {privateAppletContext appletContext;public ViewerFrame(AppletContext appletContext, JasperPrint jasperPrint) throwsJRException {

initComponents();this.appletContext =appletContext;

JRViewerPlus viewer= newJRViewerPlus(jasperPrint);

viewer.addHyperlinkListener(this);this.pnlMain.add(viewer, BorderLayout.CENTER);

}public voidgotoHyperlink(JRPrintHyperlink hyperlink) {switch(hyperlink.getHyperlinkTypeValue()) {caseREFERENCE : {try{this.appletContext.showDocument(new URL(hyperlink.getHyperlinkReference()), "_blank");

}catch(MalformedURLException e) {

JOptionPane.showMessageDialog(this, e.getMessage());

}break;

}caseLOCAL_ANCHOR :caseLOCAL_PAGE : {break;

}caseREMOTE_ANCHOR :caseREMOTE_PAGE : {

JOptionPane.showMessageDialog(this, "Implement your own JRHyperlinkListener to manage this type of event.");break;

}caseNONE :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 = newjavax.swing.JPanel();

setTitle("预览");

setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);

pnlMain.setLayout(newjava.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(newjava.awt.Dimension(width, height));

setLocation((screenSize.width-width)/2,(screenSize.height-height)/2);

}//GEN-END:initComponents//Variables declaration - do not modify//GEN-BEGIN:variables

privatejavax.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，

是否安装安全证书？

functionis_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')+'...' +

'' +

'' +

'' +

'' +

'' +

'' +

'' +

'' +

'' +

'' +

'' +

'' +

''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