前提:
1、版本要一致,偶这用的是jasperreports-4.1.2,iReport-4.1.1
2、编译好***.jasper
3、/html/image.jsp?image= 替换,是为了显示报表图片,之前用此jsp作为读取报表图片用。
public void process() {
Connection conn = null;
try {
//报表内嵌了SQL,只要传入参数,数据库连接即可。
conn = dataSource.getConnection();
Map parameters = new HashMap();
parameters.put("startTime", "20110101");
parameters.put("endTime", "20111001");
String jasperFile = "d://*****/" + "*****.jasper";
File reportFile = new File(jasperFile);
if (!reportFile.exists())
throw new JRRuntimeException("File jasper not found. The report design must be compiled first.");
JasperPrint jasperPrint =
JasperFillManager.fillReport(
jasperFile,
parameters,
conn
);
JRHtmlExporter exporter = new JRHtmlExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
ByteArrayOutputStream htmlOutputData = new ByteArrayOutputStream();
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, htmlOutputData);
exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, imageUrl);
exporter.setParameter(JRHtmlExporterParameter.IMAGES_DIR_NAME, imagePath);
exporter.setParameter(JRHtmlExporterParameter.IS_OUTPUT_IMAGES_TO_DIR, true);
exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, false);
exporter.setParameter(JRExporterParameter.CHARACTER_ENCODING, "UTF-8");
Map imageNameMap = new HashMap();
exporter.setParameter(JRHtmlExporterParameter.IMAGES_MAP, imageNameMap);
exporter.exportReport();
//attach the html data from htmlOutputData
byte[] imageData = null;
for (Iterator it = imageNameMap.entrySet().iterator(); it.hasNext(); ) {
Map.Entry entry = (Map.Entry) it.next();
String imageName = (String) entry.getKey();
imageData = (byte[]) entry.getValue();
//attach imageData using imageName as Content-ID
}
sendEmail(htmlOutputData.toByteArray(), imageData, imageNameMap);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (conn != null)
conn.close();
} catch (Exception e) {
}
}
}
public void sendEmail(final byte[] attachmentData, final byte[] imageData, final Map<String, byte[]> imageNameMap) throws MessagingException {
String host = "smtp.126.com";
final String account = "****@126.com";
final String toAddress = "****@163.com";
String username = ""****@126.com";
String password = "******";
JavaMailSenderImpl sender = new JavaMailSenderImpl();
sender.setHost(host);
sender.setUsername(username);
sender.setPassword(password);
MimeMessagePreparator preparator = new MimeMessagePreparator() {
public void prepare(MimeMessage mimeMessage) throws Exception {
Multipart multipart = new MimeMultipart();
MimeBodyPart htmlAttachment = new MimeBodyPart();
String html = new String(attachmentData, "utf-8");
for (String imageName : imageNameMap.keySet()) {
html = html.replace("/html/image.jsp?image=" + imageName, "cid:" + imageName);
}
htmlAttachment.setContent(html, "text/html;charset=\"utf-8\""); //
multipart.addBodyPart(htmlAttachment);
//当你有多个报表图片时
for (String imageName : imageNameMap.keySet()) {
MimeBodyPart imagebody = new MimeBodyPart();
imagebody.setContent(imageData, "application/octet-stream");
imagebody.setHeader("Content-ID", "<" + imageName + ">");
multipart.addBodyPart(imagebody);
}
mimeMessage.setContent(multipart);
mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(toAddress));
mimeMessage.setFrom(new InternetAddress(account));
mimeMessage.setSubject("test send jasperreports mail..");
}
};
try {
sender.send(preparator);
} catch (MailException ex) {
ex.printStackTrace();
}
}
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