项目快结束了，总结一下项目中用到的一些技术(二)

由于需求是要求发送附件到邮箱，可以grails插件对附件的支持不是很好，最终决定用birt api将报表导出到一个目录，然后发送附件是通过java mail发送！
导出碰到的问题：
1.导出报表只能到处一张，后面的初始化环境报错（猜测是birt环境初始化太频繁了），解决方法：将所有的报表导出后，在关闭birt平台；
部分方法：

public class ExportReport {
	/**
	 * 初始化
	 * 
	 * @return
	 */
	public IReportEngine configReport() {
		IReportEngine engine = null;
		EngineConfig config = null;
		try {
			config = new EngineConfig();
			// config.setBIRTHome("E:\\birt-2.5.0\\ReportEngine");
			// config.setBIRTHome("E:\\birt-runtime-2_3_1\\ReportEngine");
			config.setBIRTHome("D:\\birtReportWork\\birt-runtime-2_3_1\\ReportEngine");
			// // 这是CS程序，直接设置birthome
			Platform.startup(config);
			IReportEngineFactory factory = (IReportEngineFactory) Platform
					.createFactoryObject(IReportEngineFactory.EXTENSION_REPORT_ENGINE_FACTORY);
			engine = factory.createReportEngine(config);
			return engine;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * close
	 * 
	 * @param task
	 * @param engine
	 */
	public void closeReport(IRunAndRenderTask task, IReportEngine engine) {
		if (task != null) {
			task.close();
		}
		if (engine != null) {
			engine.destroy();
		}
		Platform.shutdown();
	}

	@SuppressWarnings("unchecked")
	private void runReportPdf(Map reportName,String parameter) {

		IReportEngine engine = configReport();
		IRunAndRenderTask task = null;
		try {
			IReportRunnable design = null;
			// String prefix = "C:\\apache-tomcat-6.0.18\\webapps\\WebViewerExample\\report\\";
			String prefix ="C:\\Program Files\\Apache Software Foundation\\Tomcat 6.0\\webapps\\WebViewerExample\\report";
			HTMLRenderOption options = new HTMLRenderOption();
			String pathPrefix = "D:\\birtReportWork/output/";
			// String pathPrefix = "E:\\output/";
			// System.out.println(pathPrefix + reportName + "." + format);
			for (Object o : reportName.entrySet()) {
				Map.Entry<String, String> m = (Map.Entry<String, String>)o;
				//logger.info("email-" + m.getKey() + ":" + m.getValue());
				String key = m.getKey();
				String value = m.getValue();
				String[] list = key.split(",");
				for (int i = 0; i < list.length; i++) {
					String end = ".rptdesign";
					design = engine.openReportDesign(prefix + list[i] + end); // 打开这个已经写好的报表文件
					task = engine.createRunAndRenderTask(design);
					task.setParameterValue("name", "china"); 
					System.out.println(list[i]);
					options.setOutputFileName(pathPrefix + list[i] + "."
							+ value); // 设置生成的pdf名称，动态的。
					options.setOutputFormat(value); // 设置显示格式为pdf,可以改成html
					options.setHtmlRtLFlag(false);
					options.setEmbeddable(false);
					task.setRenderOption(options);
					//task.setParameterValue("name", parameter);
					task.run();
				}
			}
			System.out.println("succuess");
			closeReport(task, engine);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void runReportExl(Map reportName,String parameter) {
		IReportEngine engine = configReport();
		IRunAndRenderTask task = null;
		try {
			IReportRunnable design = null;
			String prefix = "C:\\apache-tomcat-6.0.18\\webapps\\WebViewerExample\\report\\";
			// String prefix =
			// "C:\\Program Files\\Apache Software Foundation\\Tomcat 6.0\\webapps\\WebViewerExample\\report";
			 EXCELRenderOption options = new EXCELRenderOption();  //生成到xls
			// String pathPrefix = "D:\\birtReportWork/output/";
			String pathPrefix = "E:\\output/";
			// System.out.println(pathPrefix + reportName + "." + format);
			for (Object o : reportName.entrySet()) {
				Map.Entry<String, String> m = (Map.Entry<String, String>)o;
				//logger.info("email-" + m.getKey() + ":" + m.getValue());
				String key = m.getKey();
				String value = m.getValue();
				String[] list = key.split(",");
				for (int i = 0; i < list.length; i++) {
					String end = ".rptdesign";
					design = engine.openReportDesign(prefix + list[i] + end); // 打开这个已经写好的报表文件
					task = engine.createRunAndRenderTask(design);
					task.setParameterValue("name", "china"); 
					System.out.println(list[i]);
					options.setOutputFileName(pathPrefix + list[i] + "."
							+ value); // 设置生成的pdf名称，动态的。
					options.setOutputFormat(value); 
					task.setRenderOption(options);
					task.run();
				}
			}
			System.out.println("succuess");
			closeReport(task, engine);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}

2.导出pdf是没有问题的，导出xls如果包含图片就看不到图片，现在还没有解决
java mail发送附件的方法：

public class SendMail {
	public  SendMail(String title, String from, String[] sendTo,String content, String[] fileNames){
		try {
			// MailSender mailsender = new MailSender();
			sendmail(title, from, sendTo, content, fileNames,
					"text/html;charset=utf-8");
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	public static void sendmail(String subject, String from, String[] to,
			String text, String[] filenames, String mimeType) throws Exception {
		// ResourceBundle mailProps = ResourceBundle.getBundle("mail");
		// 可以从配置文件读取相应的参数
		Properties props = new Properties();

		String smtp = "smtp.163.com"; // 设置发送邮件所用到的smtp
		String servername = "******@163.com";
		String serverpaswd = "***********";

		javax.mail.Session mailSession; // 邮件会话对象
		javax.mail.internet.MimeMessage mimeMsg; // MIME邮件对象

		props = java.lang.System.getProperties(); // 获得系统属性对象
		props.put("mail.smtp.host", smtp); // 设置SMTP主机
		props.put("mail.smtp.auth", "true"); // 是否到服务器用户名和密码验证
		// 到服务器验证发送的用户名和密码是否正确
		EmailAutherticatorbean myEmailAuther = new EmailAutherticatorbean(
				servername, serverpaswd);
		// 设置邮件会话
		mailSession = javax.mail.Session.getInstance(props,
				(Authenticator) myEmailAuther);
		// 设置传输协议
		javax.mail.Transport transport = mailSession.getTransport("smtp");
		// 设置from、to等信息
		mimeMsg = new javax.mail.internet.MimeMessage(mailSession);
		if (!StringUtils.isEmpty(from)) {
			InternetAddress sentFrom = new InternetAddress(from);
			mimeMsg.setFrom(sentFrom); // 设置发送人地址
		}

		InternetAddress[] sendTo = new InternetAddress[to.length];
		for (int i = 0; i < to.length; i++) {
			System.out.println("发送到:" + to[i]);
			sendTo[i] = new InternetAddress(to[i]);
		}

		mimeMsg.setRecipients(javax.mail.internet.MimeMessage.RecipientType.TO,
				sendTo);
		mimeMsg.setSubject(subject, "gb2312");

		MimeBodyPart messageBodyPart1 = new MimeBodyPart();
		// messageBodyPart.setText(UnicodeToChinese(text));
		messageBodyPart1.setContent(text, mimeType);

		Multipart multipart = new MimeMultipart();// 附件传输格式
		multipart.addBodyPart(messageBodyPart1);

		for (int i = 0; i < filenames.length; i++) {
			MimeBodyPart messageBodyPart2 = new MimeBodyPart();
			// 选择出每一个附件名
			String filename = filenames[i].split(",")[0];
			System.out.println("附件名：" + filename);
			String displayname = filenames[i].split(",")[1];
			// 得到数据源
			FileDataSource fds = new FileDataSource(filename);
			// 得到附件本身并至入BodyPart
			messageBodyPart2.setDataHandler(new DataHandler(fds));
			// 得到文件名同样至入BodyPart
			// messageBodyPart2.setFileName(displayname);
			// messageBodyPart2.setFileName(fds.getName());
			messageBodyPart2.setFileName(MimeUtility.encodeText(displayname));
			multipart.addBodyPart(messageBodyPart2);
		}
		mimeMsg.setContent(multipart);
		// 设置信件头的发送日期
		mimeMsg.setSentDate(new Date());
		mimeMsg.saveChanges();
		// 发送邮件
		transport.send(mimeMsg);
		transport.close();
	}
}

还有个辅助类

public class EmailAutherticatorbean extends Authenticator {
	private String m_username = null;
	private String m_userpass = null;

	public void setUsername(String username) {
		m_username = username;
	}

	public void setUserpass(String userpass) {
		m_userpass = userpass;
	}

	public EmailAutherticatorbean(String username, String userpass) {
		super();
		setUsername(username);
		setUserpass(userpass);

	}

	public PasswordAuthentication getPasswordAuthentication() {

		return new PasswordAuthentication(m_username, m_userpass);
	}
}

这样就实现了报表附件的发送！
birt报表开发：
现在还在继续中，只做了几张，不过有写问题解决还是靠 ‘呼唤’大哥的帮忙
http://www.birthome.cn上有很多教程，做报表可以学习很多，如果碰到问题提问，呼唤会第一时间回答你的！差不多了，现在想到的就这么多以后补