Struts2中兑现JasperReport打印通用模块设计（兼容多种浏览器）
/**
* 报表Applet打印和pdf、xls导出
*
* @author liulin
* @date 2010-3
* **/
abstract public class ReportAction extends BaseAction {
private static String basepath = "/WEB-INF/report/";// 报表存放地址
private static String jrepath = "../applet/jre-6u21-windows-i586.exe";//jre-6u19-windows-i586.exe";// jre下载本地路径#Version=6,0,1,9
public String reportname;// 无后缀的jrxml报表模板名字
public String exportname;// 导出pdf、xls的文件名字
public List reportList;// 数据明细集合
public Map reportParams;// 报表参数
/** 报表填充数据 **/
abstract public List getReportList();
public void setReportList(List reportList) {
this.reportList = reportList;
}
public Map getReportParams() {
return reportParams;
}
public void setReportParams(Map reportParams) {
this.reportParams = reportParams;
}
public String getReportname() {
return reportname;
}
public void setReportname(String reportname) {
this.reportname = reportname;
}
public String getExportname() {
return exportname;
}
public void setExportname(String exportname) {
this.exportname = exportname;
}
public String getBasepath() {
return basepath;
}
public void setBasepath(String basepath) {
this.basepath = basepath;
}
public String getJrepath() {
return jrepath;
}
public void setJrepath(String jrepath) {
this.jrepath = jrepath;
}
/** applet打印预览，兼容ie、火狐等大多数浏览器 **/
public String print() {
Enumeration en = this.getRequest().getParameterNames();
boolean isIE = isIE();
String appleturl;
String param = "";
for (; en.hasMoreElements();) {
String k = (String) en.nextElement();
String v = 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;
String html = "<html><head><title></title>\n"
+ "<style type=\"text/css\">body {margin:0px 2px;padding:0px;}</style>\n"
+ "</head><body>\n";
html+="<!--[if !IE]> Firefox and others will use outer object -->" +
"<object classid=\"java:EmbeddedViewerApplet\" type=\"application/x-java-applet\" WIDTH=\"100%\" HEIGHT=\"100%\" >" +
"<PARAM NAME=\"REPORT_URL\" " + " VALUE=\"" + appleturl + "\">" +
"<PARAM NAME=\"CODEBASE\" VALUE=\"../applet\">" +
"<param name=\"archive\" value=\"jasperreports-applet-3.7.1.jar,commons-logging.jar,commons-collections.jar\" />" +
"<!--<![endif]-->" +
"<!-- MSIE (Microsoft Internet Explorer) will use inner object -->" +
"<object classid=\"clsid:8AD9C840-044E-11D1-B3E9-00805F499D93\"" +
" codebase=\""+jrepath+"\" WIDTH=\"100%\" HEIGHT=\"100%\" >" +
"<PARAM NAME=\"CODEBASE\" VALUE=\"../applet\">" +
"<param name=\"code\" value=\"EmbeddedViewerApplet.class\" />" +
"<param name=\"archive\" value=\"jasperreports-applet-3.7.1.jar,commons-logging.jar,commons-collections.jar\" />" +
"<PARAM NAME=\"REPORT_URL\" " + " VALUE=\"" + appleturl + "\">" +
"<strong>这个浏览器没有安装 Java Plug-in.<br />" +
"<a href=\"http://www.oracle.com/technetwork/java/javase/downloads/index.html\">从最官方下载最新 Java Plug-in.</a></strong><br/>" +
"<a href=\""+jrepath+"\">从本地下载 Java Plug-in</a><br/>" +
"<a href=\"../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:\\\\Program Files\\\\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]> close outer object -->" +
"</object>" +
"<!--<![endif]-->";
html += "</body></html>";
this.renderHtml(html);
return NONE;
}
/** 是否IE **/
public boolean isIE() {
HttpServletRequest request = this.getRequest();
String agent = request.getHeader("USER-AGENT");
boolean isIE = false;
if (null != agent && -1 != agent.indexOf("MSIE"))
isIE = true;
return isIE;
}
/**
* 根据浏览器类型导出文件中文名称，支持浏览器IE、Firefox、Safari
*
* @throws UnsupportedEncodingException
**/
public String getFileNameCode(String fileName)
throws UnsupportedEncodingException {
HttpServletRequest request = this.getRequest();
String agent = request.getHeader("USER-AGENT");
if (null != agent && -1 != agent.indexOf("MSIE")) {
fileName = java.net.URLEncoder.encode(fileName, "UTF-8").replace(
"+", " ");
} else if (null != agent && -1 != agent.indexOf("Firefox")) {
fileName = new String(fileName.getBytes("UTF-8"), "iso8859-1");
} else if (null != agent && -1 != agent.indexOf("Safari")) {
fileName = java.net.URLEncoder.encode(fileName, "UTF-8").replace(
"+", " ");
} else {
}
return fileName;
}
/** 导出xls文件 **/
public String XLS() throws Exception {
HttpServletResponse response = this.getResponse();
String sourceFile = ServletActionContext.getServletContext()
.getRealPath(basepath + reportname + ".jrxml");
File parent = new File(sourceFile).getParentFile();
JRXlsExporter exporter = new JRXlsExporter();
JasperPrint jasperPrint = null;
try {
JasperCompileManager.compileReportToFile(sourceFile, new File(
parent, reportname + ".jasper").getAbsolutePath());
JasperReport jasperReport = (JasperReport) JRLoader
.loadObject(sourceFile.replace(".jrxml", ".jasper"));
List list = this.getReportList();
jasperPrint = JasperFillManager.fillReport(jasperReport,
this.reportParams, new JRBeanCollectionDataSource(list));
} catch (Exception e) {
e.printStackTrace();
}
if (null != jasperPrint) {
byte[] bytes;
ByteArrayOutputStream bo = new ByteArrayOutputStream();
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(new Date(), "yyyy年MM月dd日")
+ ".xls";
response.addHeader("Content-Disposition",
"attachment; filename=\"" + getFileNameCode(exportname)
+ "\"");
response.setContentLength(bytes.length);
ServletOutputStream sos = response.getOutputStream();
sos.write(bytes, 0, bytes.length);
sos.flush();
sos.close();
}
}
return NONE;
}
/** 导出pdf文件 **/
public String PDF() throws Exception {
HttpServletResponse response = this.getResponse();
String sourceFile = ServletActionContext.getServletContext()
.getRealPath(basepath + reportname + ".jrxml");
File parent = new File(sourceFile).getParentFile();
JRPdfExporter exporter = new JRPdfExporter();
JasperPrint jasperPrint = null;
try {
JasperCompileManager.compileReportToFile(sourceFile, new File(
parent, reportname + ".jasper").getAbsolutePath());
JasperReport jasperReport = (JasperReport) JRLoader
.loadObject(sourceFile.replace(".jrxml", ".jasper"));
List list = this.getReportList();
jasperPrint = JasperFillManager.fillReport(jasperReport,
this.reportParams, new JRBeanCollectionDataSource(list));
} catch (Exception e) {
e.printStackTrace();
}
if (null != jasperPrint) {
byte[] bytes;
ByteArrayOutputStream bo = new ByteArrayOutputStream();
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(new Date(), "yyyy年MM月dd日")
+ ".pdf";
response.addHeader("Content-Disposition",
"attachment; filename=\"" + getFileNameCode(exportname)
+ "\"");
response.setContentLength(bytes.length);
ServletOutputStream sos = response.getOutputStream();
sos.write(bytes, 0, bytes.length);
sos.flush();
sos.close();
}
}
return NONE;
}
/**
* applet输出
*
* **/
public String APPLET() {
File reportFile = new File(ServletActionContext.getRequest()
.getRealPath(basepath + reportname + ".jasper"));
String sourceFile = ServletActionContext.getServletContext()
.getRealPath(basepath + reportname + ".jrxml");
File parent = new File(sourceFile).getParentFile();
JasperPrint jasperPrint = null;
try {
JasperCompileManager.compileReportToFile(sourceFile, new File(
parent, reportname + ".jasper").getAbsolutePath());
JasperReport jasperReport = (JasperReport) JRLoader
.loadObject(reportFile);
List list = this.getReportList();
jasperPrint = JasperFillManager.fillReport(jasperReport,
this.reportParams, new JRBeanCollectionDataSource(list));
} catch (Exception e) {
System.out.println("打印出错了:"+e.getMessage());
e.printStackTrace();
}
if (null != jasperPrint) {
HttpServletResponse response = this.getResponse();// ServletActionContext.getResponse();
response.setContentType("application/octet-stream");
ServletOutputStream ouputStream;
try {
ouputStream = response.getOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(ouputStream);
oos.writeObject(jasperPrint);
oos.flush();
oos.close();
ouputStream.flush();
ouputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return NONE;
}
}