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JSP 发送电子邮件
2018-03-20 13:38 更新
JSP教程 - JSP发送电子邮件
要使用JSP发送电子邮件，请在CLASSPATH中安装JavaMail API和Java Activation Framework(JAF)。
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;
String to = "to@gmail.com";
String from = "from@gmail.com";
String host = "localhost";
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session mailSession = Session.getDefaultInstance(properties);
try{
MimeMessage message = new MimeMessage(mailSession);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject("This is the Subject Line!");
message.setText("This is actual message");
Transport.send(message);
result = "Sent message successfully....";
}catch (MessagingException mex) {
mex.printStackTrace();
result = "Error: unable to send message....";
}
%>
<html>
<body>
<center>
</center>
<p align="center">
<%
out.println("Result: " + result + "\n");
%>
</p>
</body>
</html>
要向多个收件人发送电子邮件，请使用以下方法。
void addRecipients(Message.RecipientType type, Address[] addresses) throws MessagingException
发送HTML电子邮件
使用以下函数和参数发送HTML电子邮件。
message.setContent("<h1>This is actual message</h1>","text/html" );
完整的源代码
<%@ page import="java.io.*,java.util.*,javax.mail.*"%>
<%@ page import="javax.mail.internet.*,javax.activation.*"%>
<%@ page import="javax.servlet.http.*,javax.servlet.*" %>
<%
String result;
String to = "to@gmail.com";
String from = "from@gmail.com";
String host = "localhost";
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session mailSession = Session.getDefaultInstance(properties);
try{
MimeMessage message = new MimeMessage(mailSession);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject("This is the Subject Line!");
message.setContent("<h1>This is actual message</h1>","text/html" );
Transport.send(message);
result = "Sent message successfully....";
}catch (MessagingException mex) {
mex.printStackTrace();
result = "Error: unable to send message....";
}
%>
<html>
<body>
<p align="center">
<%
out.println("Result: " + result + "\n");
%>
</p>
</body>
</html>
使用附件发送电子邮件
<%@ page import="java.io.*,java.util.*,javax.mail.*"%>
<%@ page import="javax.mail.internet.*,javax.activation.*"%>
<%@ page import="javax.servlet.http.*,javax.servlet.*" %>
<%
String result;
String to = "to@gmail.com";
String from = "from@gmail.com";
String host = "localhost";
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session mailSession = Session.getDefaultInstance(properties);
try{
MimeMessage message = new MimeMessage(mailSession);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject("This is the Subject Line!");
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setText("This is message body");
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messageBodyPart);
messageBodyPart = new MimeBodyPart();
String filename = "file.txt";
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(filename);
multipart.addBodyPart(messageBodyPart);
message.setContent(multipart );
Transport.send(message);
String title = "Send Email";
result = "Sent message successfully....";
}catch (MessagingException mex) {
mex.printStackTrace();
result = "Error: unable to send message....";
}
%>
<html>
<body>
<%
out.println("Result: " + result + "\n");
%>
</body>
</html>
用户验证
要向电子邮件服务器提供用户ID和密码，请在属性中设置用户名和密码，如下所示：
props.setProperty("mail.user", "myuser");
props.setProperty("mail.password", "mypwd");
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