Struts2中实现JasperReport打印通用模块设计（兼容多种浏览器）
daoyongyu 2010-10-24
/**
*报表Applet打印和pdf、xls导出
*
*@authorliulin
*@date2010-3
***/
abstractpublicclassReportActionextendsBaseAction{
privatestaticStringbasepath="/WEB-INF/report/";//报表存放地址
privatestaticStringjrepath="../applet/jre-6u21-windows-i586.exe";//jre-6u19-windows-i586.exe";//jre下载本地路径#Version=6,0,1,9
publicStringreportname;//无后缀的jrxml报表模板名字
publicStringexportname;//导出pdf、xls的文件名字
publicListreportList;//数据明细集合
publicMapreportParams;//报表参数
/**报表填充数据**/
abstractpublicListgetReportList();
publicvoidsetReportList(ListreportList){
this.reportList=reportList;
}
publicMapgetReportParams(){
returnreportParams;
}
publicvoidsetReportParams(MapreportParams){
this.reportParams=reportParams;
}
publicStringgetReportname(){
returnreportname;
}
publicvoidsetReportname(Stringreportname){
this.reportname=reportname;
}
publicStringgetExportname(){
returnexportname;
}
publicvoidsetExportname(Stringexportname){
this.exportname=exportname;
}
publicStringgetBasepath(){
returnbasepath;
}
publicvoidsetBasepath(Stringbasepath){
this.basepath=basepath;
}
publicStringgetJrepath(){
returnjrepath;
}
publicvoidsetJrepath(Stringjrepath){
this.jrepath=jrepath;
}
/**applet打印预览，兼容ie、火狐等大多数浏览器**/
publicStringprint(){
Enumerationen=this.getRequest().getParameterNames();
booleanisIE=isIE();
Stringappleturl;
Stringparam="";
for(;en.hasMoreElements();){
Stringk=(String)en.nextElement();
Stringv=this.getRequest().getParameter(k);
if(v!=null)
param+=k+"="+v.trim()+"&";
else
param+=k+"=&";
}
if(param.lastIndexOf("&")==param.length()-1)
param=param.substring(0,param.length()-1);
appleturl=this.getRequest().getRequestURI().replace("_print.action",
"_APPLET.action")
+"?"+param;
Stringhtml="<html><head><title></title>\n"
+"<styletype=\"text/css\">body{margin:0px2px;padding:0px;}</style>\n"
+"</head><body>\n";
html+="<!--[if!IE]>Firefoxandotherswilluseouterobject-->"+
"<objectclassid=\"java:EmbeddedViewerApplet\"type=\"application/x-java-applet\"WIDTH=\"100%\"HEIGHT=\"100%\">"+
"<PARAMNAME=\"REPORT_URL\""+"VALUE=\""+appleturl+"\">"+
"<PARAMNAME=\"CODEBASE\"VALUE=\"../applet\">"+
"<paramname=\"archive\"value=\"jasperreports-applet-3.7.1.jar,commons-logging.jar,commons-collections.jar\"/>"+
"<!--<![endif]-->"+
"<!--MSIE(MicrosoftInternetExplorer)willuseinnerobject-->"+
"<objectclassid=\"clsid:8AD9C840-044E-11D1-B3E9-00805F499D93\""+
"codebase=\""+jrepath+"\"WIDTH=\"100%\"HEIGHT=\"100%\">"+
"<PARAMNAME=\"CODEBASE\"VALUE=\"../applet\">"+
"<paramname=\"code\"value=\"EmbeddedViewerApplet.class\"/>"+
"<paramname=\"archive\"value=\"jasperreports-applet-3.7.1.jar,commons-logging.jar,commons-collections.jar\"/>"+
"<PARAMNAME=\"REPORT_URL\""+"VALUE=\""+appleturl+"\">"+
"<strong>这个浏览器没有安装JavaPlug-in.<br/>"+
"<ahref=\"http://www.oracle.com/technetwork/java/javase/downloads/index.html\">从最官方下载最新JavaPlug-in.</a></strong><br/>"+
"<ahref=\""+jrepath+"\">从本地下载JavaPlug-in</a><br/>"+
"<ahref=\"../applet/JavaRuntimeEnvironment.reg\">如果安装插件失败，手动修改注册列表来实现（注意：修改JavaRuntimeEnvironment.reg文件中的C:\\\\ProgramFiles\\\\Java\\\\jre6\\\\为你系统jre安装目录；修改1.6.0_21为你当前安装版本）</a>"+
"</object>"+
"<!--[if!IE]>closeouterobject-->"+
"</object>"+
"<!--<![endif]-->";
html+="</body></html>";
this.renderHtml(html);
returnNONE;
}
/**是否IE**/
publicbooleanisIE(){
HttpServletRequestrequest=this.getRequest();
Stringagent=request.getHeader("USER-AGENT");
booleanisIE=false;
if(null!=agent&&-1!=agent.indexOf("MSIE"))
isIE=true;
returnisIE;
}
/**
*根据浏览器类型导出文件中文名称，支持浏览器IE、Firefox、Safari
*
*@throwsUnsupportedEncodingException
**/
publicStringgetFileNameCode(StringfileName)
throwsUnsupportedEncodingException{
HttpServletRequestrequest=this.getRequest();
Stringagent=request.getHeader("USER-AGENT");
if(null!=agent&&-1!=agent.indexOf("MSIE")){
fileName=java.net.URLEncoder.encode(fileName,"UTF-8").replace(
"+","");
}elseif(null!=agent&&-1!=agent.indexOf("Firefox")){
fileName=newString(fileName.getBytes("UTF-8"),"iso8859-1");
}elseif(null!=agent&&-1!=agent.indexOf("Safari")){
fileName=java.net.URLEncoder.encode(fileName,"UTF-8").replace(
"+","");
}else{
}
returnfileName;
}
/**导出xls文件**/
publicStringXLS()throwsException{
HttpServletResponseresponse=this.getResponse();
StringsourceFile=ServletActionContext.getServletContext()
.getRealPath(basepath+reportname+".jrxml");
Fileparent=newFile(sourceFile).getParentFile();
JRXlsExporterexporter=newJRXlsExporter();
JasperPrintjasperPrint=null;
try{
JasperCompileManager.compileReportToFile(sourceFile,newFile(
parent,reportname+".jasper").getAbsolutePath());
JasperReportjasperReport=(JasperReport)JRLoader
.loadObject(sourceFile.replace(".jrxml",".jasper"));
Listlist=this.getReportList();
jasperPrint=JasperFillManager.fillReport(jasperReport,
this.reportParams,newJRBeanCollectionDataSource(list));
}catch(Exceptione){
e.printStackTrace();
}
if(null!=jasperPrint){
byte[]bytes;
ByteArrayOutputStreambo=newByteArrayOutputStream();
exporter
.setParameter(JRExporterParameter.JASPER_PRINT,jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,bo);
exporter.exportReport();
bytes=bo.toByteArray();
if(bytes!=null&&bytes.length>0){
response.reset();
response.setContentType("application/xls");
exportname=exportname+"__"
+this.getCurrentTime(newDate(),"yyyy年MM月dd日")
+".xls";
response.addHeader("Content-Disposition",
"attachment;filename=\""+getFileNameCode(exportname)
+"\"");
response.setContentLength(bytes.length);
ServletOutputStreamsos=response.getOutputStream();
sos.write(bytes,0,bytes.length);
sos.flush();
sos.close();
}
}
returnNONE;
}
/**导出pdf文件**/
publicStringPDF()throwsException{
HttpServletResponseresponse=this.getResponse();
StringsourceFile=ServletActionContext.getServletContext()
.getRealPath(basepath+reportname+".jrxml");
Fileparent=newFile(sourceFile).getParentFile();
JRPdfExporterexporter=newJRPdfExporter();
JasperPrintjasperPrint=null;
try{
JasperCompileManager.compileReportToFile(sourceFile,newFile(
parent,reportname+".jasper").getAbsolutePath());
JasperReportjasperReport=(JasperReport)JRLoader
.loadObject(sourceFile.replace(".jrxml",".jasper"));
Listlist=this.getReportList();
jasperPrint=JasperFillManager.fillReport(jasperReport,
this.reportParams,newJRBeanCollectionDataSource(list));
}catch(Exceptione){
e.printStackTrace();
}
if(null!=jasperPrint){
byte[]bytes;
ByteArrayOutputStreambo=newByteArrayOutputStream();
exporter
.setParameter(JRExporterParameter.JASPER_PRINT,jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM,bo);
exporter.exportReport();
bytes=bo.toByteArray();
if(bytes!=null&&bytes.length>0){
response.reset();
response.setContentType("application/pdf");
exportname=exportname+"__"
+this.getCurrentTime(newDate(),"yyyy年MM月dd日")
+".pdf";
response.addHeader("Content-Disposition",
"attachment;filename=\""+getFileNameCode(exportname)
+"\"");
response.setContentLength(bytes.length);
ServletOutputStreamsos=response.getOutputStream();
sos.write(bytes,0,bytes.length);
sos.flush();
sos.close();
}
}
returnNONE;
}
/**
*applet输出
*
***/
publicStringAPPLET(){
FilereportFile=newFile(ServletActionContext.getRequest()
.getRealPath(basepath+reportname+".jasper"));
StringsourceFile=ServletActionContext.getServletContext()
.getRealPath(basepath+reportname+".jrxml");
Fileparent=newFile(sourceFile).getParentFile();
JasperPrintjasperPrint=null;
try{
JasperCompileManager.compileReportToFile(sourceFile,newFile(
parent,reportname+".jasper").getAbsolutePath());
JasperReportjasperReport=(JasperReport)JRLoader
.loadObject(reportFile);
Listlist=this.getReportList();
jasperPrint=JasperFillManager.fillReport(jasperReport,
this.reportParams,newJRBeanCollectionDataSource(list));
}catch(Exceptione){
System.out.println("打印出错了:"+e.getMessage());
e.printStackTrace();
}
if(null!=jasperPrint){
HttpServletResponseresponse=this.getResponse();//ServletActionContext.getResponse();
response.setContentType("application/octet-stream");
ServletOutputStreamouputStream;
try{
ouputStream=response.getOutputStream();
ObjectOutputStreamoos=newObjectOutputStream(ouputStream);
oos.writeObject(jasperPrint);
oos.flush();
oos.close();
ouputStream.flush();
ouputStream.close();
}catch(IOExceptione){
e.printStackTrace();
}
}
returnNONE;
}}
