JSP发送电子邮件Email
要使用JSP发送邮件是很简单的,需要在您的机器上安装JavaMail API和Java激活框架(JAF)。
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您可以从Java标准网站上下载的JavaMail(版本1.2)的最新版本。
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您可以从Java的标准的网站下载JavaBeans激活框架JAF(版本1.0.2)的最新版本。
下载并解压缩这些文件,在新创建的顶层目录,你会发现一些jar文件同时为应用。你需要添加了mail.jar和activation.jar文件的文件在你的CLASSPATH中。
发送一个简单的电子邮件:
下面是一个例子,从你的机器发送一个简单的电子邮件。这里假设你的本地主机连接到互联网,并有足够的能力来发送电子邮件。同时要确保从Java电子邮件API包和CLASSPATH中可用JAF包ARA的所有jar文件。
<%@ page import="java.io.*,java.util.*,javax.mail.*"%> <%@ page import="javax.mail.internet.*,javax.activation.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <% String result; // Recipient's email ID needs to be mentioned. String to = "abcd@gmail.com"; // Sender's email ID needs to be mentioned String from = "mcmohd@gmail.com"; // Assuming you are sending email from localhost String host = "localhost"; // Get system properties object Properties properties = System.getProperties(); // Setup mail server properties.setProperty("mail.smtp.host", host); // Get the default Session object. Session mailSession = Session.getDefaultInstance(properties); try{ // Create a default MimeMessage object. MimeMessage message = new MimeMessage(mailSession); // Set From: header field of the header. message.setFrom(new InternetAddress(from)); // Set To: header field of the header. message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: header field message.setSubject("This is the Subject Line!"); // Now set the actual message message.setText("This is actual message"); // Send message Transport.send(message); result = "Sent message successfully...."; }catch (MessagingException mex) { mex.printStackTrace(); result = "Error: unable to send message...."; } %> <html> <head> <title>Send Email using JSP</title> </head> <body> <center> <h1>Send Email using JSP</h1> </center> <p align="center"> <% out.println("Result: " + result + " "); %> </p> </body> </html>
现在,让我们把上面的代码写到SendEmail.jsp文件,并使用URL http://localhost:8080/SendEmail.jsp调用这个JSP这将发送一封电子邮件到指定的电子邮件ID abcd@gmail.comand会显示以下回应:
Send Email using JSPResult: Sent message successfully.... |
如果您想发送电子邮件给多个收件人,然后下面的方法将被用来指定多个电子邮件ID:
void addRecipients(Message.RecipientType type, Address[] addresses) throws MessagingException
这里的参数的说明:
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type: 这将被设定为TO,CC或BCC。在这里,CC代表抄送和密件抄送代表黑碳复制。例如Message.RecipientType.TO
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addresses: 这是电子邮件的ID的数组。需要使用 InternetAddress()方法,同时指定电子邮件ID。
发送HTML Email:
下面是一个例子,从机器发送的HTML电子邮件。这里假设你的本地主机连接到互联网,并有足够的能力来发送电子邮件。同时要确保从Java电子邮件API包和CLASSPATH中可用JAF包ARA的所有jar文件。
这个例子非常相似,前一个,除了在这里我们使用的是使用setContent()方法来设置内容的第二个参数为“text / html类型”指定的HTML内容被包含在消息中。
通过这个例子,可以发送你喜欢HTML内容。
<%@ page import="java.io.*,java.util.*,javax.mail.*"%> <%@ page import="javax.mail.internet.*,javax.activation.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <% String result; // Recipient's email ID needs to be mentioned. String to = "abcd@gmail.com"; // Sender's email ID needs to be mentioned String from = "mcmohd@gmail.com"; // Assuming you are sending email from localhost String host = "localhost"; // Get system properties object Properties properties = System.getProperties(); // Setup mail server properties.setProperty("mail.smtp.host", host); // Get the default Session object. Session mailSession = Session.getDefaultInstance(properties); try{ // Create a default MimeMessage object. MimeMessage message = new MimeMessage(mailSession); // Set From: header field of the header. message.setFrom(new InternetAddress(from)); // Set To: header field of the header. message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: header field message.setSubject("This is the Subject Line!"); // Send the actual HTML message, as big as you like message.setContent("<h1>This is actual message</h1>", "text/html" ); // Send message Transport.send(message); result = "Sent message successfully...."; }catch (MessagingException mex) { mex.printStackTrace(); result = "Error: unable to send message...."; } %> <html> <head> <title>Send HTML Email using JSP</title> </head> <body> <center> <h1>Send Email using JSP</h1> </center> <p align="center"> <% out.println("Result: " + result + " "); %> </p> </body> </html>
现在,尝试使用上面的JSP在给定的电子邮件ID发送HTML格式的邮件。
发送附件的电子邮件:
下面是一个例子与附件从你的机器发送电子邮件:
<%@ page import="java.io.*,java.util.*,javax.mail.*"%> <%@ page import="javax.mail.internet.*,javax.activation.*"%> <%@ page import="javax.servlet.http.*,javax.servlet.*" %> <% String result; // Recipient's email ID needs to be mentioned. String to = "abcd@gmail.com"; // Sender's email ID needs to be mentioned String from = "mcmohd@gmail.com"; // Assuming you are sending email from localhost String host = "localhost"; // Get system properties object Properties properties = System.getProperties(); // Setup mail server properties.setProperty("mail.smtp.host", host); // Get the default Session object. Session mailSession = Session.getDefaultInstance(properties); try{ // Create a default MimeMessage object. MimeMessage message = new MimeMessage(mailSession); // Set From: header field of the header. message.setFrom(new InternetAddress(from)); // Set To: header field of the header. message.addRecipient(Message.RecipientType.TO, new InternetAddress(to)); // Set Subject: header field message.setSubject("This is the Subject Line!"); // Create the message part BodyPart messageBodyPart = new MimeBodyPart(); // Fill the message messageBodyPart.setText("This is message body"); // Create a multipar message Multipart multipart = new MimeMultipart(); // Set text message part multipart.addBodyPart(messageBodyPart); // Part two is attachment messageBodyPart = new MimeBodyPart(); String filename = "file.txt"; DataSource source = new FileDataSource(filename); messageBodyPart.setDataHandler(new DataHandler(source)); messageBodyPart.setFileName(filename); multipart.addBodyPart(messageBodyPart); // Send the complete message parts message.setContent(multipart ); // Send message Transport.send(message); String title = "Send Email"; result = "Sent message successfully...."; }catch (MessagingException mex) { mex.printStackTrace(); result = "Error: unable to send message...."; } %> <html> <head> <title>Send Attachement Email using JSP</title> </head> <body> <center> <h1>Send Attachement Email using JSP</h1> </center> <p align="center"> <% out.println("Result: " + result + " "); %> </p> </body> </html>
现在试着上面的JSP运行到一个文件作为附件发送以及在给定的电子邮件ID的消息。
用户认证部分:
如果需要提供用户ID和密码的电子邮件服务器进行身份验证的目的,那么你可以按如下方法设置这些属性:
props.setProperty("mail.user", "myuser"); props.setProperty("mail.password", "mypwd");
邮件发送机制的其余部分将继续如上面所述。
使用表单发送电子邮件:
您可以使用HTML表单接受电子邮件参数,然后你可以使用request对象如下,让所有的信息:
String to = request.getParameter("to"); String from = request.getParameter("from"); String subject = request.getParameter("subject"); String messageText = request.getParameter("body");
一旦你把所有的信息设置完成,就可以使用上面提到的程序来发送电子邮件。
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