javax.mail.SendFailedException:发送失败;嵌套异常为:类javax.mail.MessaginException:未知SMTP主机:relay.jangosmtp.net; 我想将我的Jsp连接到电子邮件。我正在使用ApacheTomcat服务器。我引用此链接来完成它:-但我得到的错误如下:-
我真的确信问题在哪里。请帮我纠正这个错误。提前谢谢 这是我的index.html:-javax.mail.SendFailedException:发送失败;嵌套异常为:类javax.mail.MessaginException:未知SMTP主机:relay.jangosmtp.net; 我想将我的Jsp连接到电子邮件。我正在使用ApacheTomcat服务器。我引用此链接来完成它:-但我得到的错误如下:-,jsp,email,session,tomcat,smtp,Jsp,Email,Session,Tomcat,Smtp,我真的确信问题在哪里。请帮我纠正这个错误。提前谢谢 这是我的index.html:- 还有一个问题:-在JangoSMTP创建了一个免费帐户后,它表示要为web应用程序提供IP地址。当我在本地机器上使用Tomcat服务器时,如何做到这一点。这可能是我出错的原因吗?看起来有DNS解析问题。尝试使用ip地址209.173.141.243而不是主机名relay.jangosmtp.net来修复您的本地DNS设置。因此,我尝试过这样做,但现在我得到的错误消息是:-------javax.mail.Sen
还有一个问题:-在JangoSMTP创建了一个免费帐户后,它表示要为web应用程序提供IP地址。当我在本地机器上使用Tomcat服务器时,如何做到这一点。这可能是我出错的原因吗?看起来有DNS解析问题。尝试使用ip地址209.173.141.243而不是主机名relay.jangosmtp.net来修复您的本地DNS设置。因此,我尝试过这样做,但现在我得到的错误消息是:-------javax.mail.SendFailedException:发送失败;嵌套异常为:类javax.mail.MessaginException:无法连接到SMTP主机:209.173.141.243,端口:25;嵌套异常是:java.net.ConnectException:Connection timed out:connect------------------那么,我应该如何修复它?您能够从命令行telnet 209.173.141.243 25吗?不!它告诉我telnet不被识别为内部/外部命令!因此,您需要首先启用它:
javax.mail.SendFailedException: Sending failed;
nested exception is:
class javax.mail.MessagingException: Unknown SMTP host: relay.jangosmtp.net;
nested exception is:
java.net.UnknownHostException: relay.jangosmtp.net
<%@ 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 = "abc@gmail.com";
// Sender's email ID needs to be mentioned
String from = "abc@gmail.com";
final String username = "username";
final String password = "251497PF";
// Assuming you are sending email through relay.jangosmtp.net
String host = "relay.jangosmtp.net";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", "25");
//Get the Session object.
Session mailSession = Session.getInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username,
password);
}
});
try {
// Create a default MimeMessage object.
Message message = new MimeMessage(mailSession);
// Set From: header field of the header.
message.setFrom(new InternetAddress(from));
// Set To: header field of the header.
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(to));
// Set Subject: header field
message.setSubject("Testing Subject");
// Now set the actual message
message.setText("Hello, this is sample for to check send "
+ "email using JavaMailAPI in JSP ");
// Send message
Transport.send(message);
System.out.println("Sent message successfully....");
result = "Sent message successfully....";
} catch (MessagingException e) {
e.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 + "\n");
%>
</p>
</body>