使用JSP发送电子邮件

  • Z时代
  • 2024-01-10
  • 分类：问答

这个问题使我发疯。我有以下代码：

<html>
<body>
<%@ page import="java.util.*" %>
<%@ page import="javax.mail.*" %>
<%@ page import="javax.mail.internet.*" %>
<%@ page import="javax.activation.*" %>
<%
String host = "exchsrv2";
String to = "alan@domain.com";
String from = "apeince@domain.com";
String subject = "test";
String messageText = "body test";
Properties props = System.getProperties();
props.put("mail.host", host);
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.port", "25");
Session mailSession = Session.getDefaultInstance(props, null);
Message msg = new MimeMessage(mailSession);
msg.setFrom(new InternetAddress(from));
InternetAddress[] address = {new InternetAddress(to)};
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject(subject);
msg.setSentDate(new Date());
msg.setText(messageText);
Transport.send(msg);
out.println("Mail was sent to " + to);
out.println(" from " + from);
out.println(" using host " + host + ".");
%>
</body>
</html>

好的，问题是，出现以下错误：

javax.servlet.ServletException: javax.mail.MessagingException: Could not connect to SMTP host: exchsrv2, port: 25;
nested exception is:
java.net.SocketException: Permission denied: connect
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:911)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:840)
org.apache.jsp.alan_jsp._jspService(alan_jsp.java:113)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:433)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

我知道Exchange服务器在那里。我可以远程登录就可以了。我的Exchange服务器设置为不需要身份验证。我有一个在C＃/。NET中可以正常运行的程序，并且它可以正常运行，所以我知道问题不在Exchange服务器中。我在这里做错了什么？

回答：

好吧，我会说尝试连接时存在身份验证问题。您不提供任何用户名或密码，除非您的交换服务器不需要用户名和密码。

更新：如果使用JDK 7，请参阅以下文章，它解决了此问题：

缺陷-使用VPN时，套接字拒绝JDK7权限

“更多地挖掘，似乎VPN客户端已禁用IPv6，这导致JDK7出现问题。如果我使用以下标志-Djava.net.preferIPv4Stack =

true，我将不再看到错误。这是预期的解决方法还是这是一个问题？

public class MailTest {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws MessagingException {
        String host = "smtp.gmail.com";
        String to = "myEmail@gmail.com";
        String from = "myEmail@gmail.com";
        String subject = "test";
        String messageText = "body test";
        Properties props = System.getProperties();
        props.put("mail.host", host);
        props.put("mail.transport.protocol", "smtp");
        props.put("mail.smtp.port", "25");
        // If using authentication, otherwise comment out
        props.put("mail.smtp.auth", "true");
        // Gmail requires TLS, your server may not
        props.put("mail.smtp.starttls.enable", "true");
        Session mailSession = Session.getDefaultInstance(props, null);
        Message msg = new MimeMessage(mailSession);
        msg.setFrom(new InternetAddress(from));
        InternetAddress[] address = {new InternetAddress(to)};
        msg.setRecipients(Message.RecipientType.TO, address);
        msg.setSubject(subject);
        msg.setSentDate(new Date());
        msg.setText(messageText);
        Transport transport = mailSession.getTransport("smtp");
        //connect with authentication
        //transport.connect(host,"myUsername" , "myPassword");
        //connect without authentication
        transport.connect();
        transport.sendMessage(msg, address);
        transport.close();
        System.out.println("Mail was sent to " + to);
        System.out.println(" from " + from);
        System.out.println(" using host " + host + ".");
    }
}

以上是 使用JSP发送电子邮件 的全部内容， 来源链接： utcz.com/qa/410384.html

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