提问：关于JAVAMAIL发送时提示不能连接SMTP服务器的问题

源代码如下：
<html>
<head>
  <title>CH17 - JavaMail2.jsp</title>
</head>
<body>
<h2>利用JavaMail来传送电子邮件 - HTML格式</h2><%@ page import="java.util.*" %>
<%@ page import="javax.mail.*" %>
<%@ page import="javax.activation.*" %>
<%@ page import="javax.mail.internet.*" %><%@ page contentType="text/html;charset=GB2312" %><%
request.setCharacterEncoding("GB2312"); String host    = "smtp.gmail.com";
String rec          = request.getParameter("To");
String sen          = request.getParameter("From");
String sub       = request.getParameter("Subject");
String mess      = request.getParameter("Message");
String username    = "test";   
String password     = "123456";   

   boolean sessionDebug = false;
Properties prop = System.getProperties();
prop.put("mail.host",host);
prop.put("mail.transport.protocol","smtp");
prop.put("mail.smtp.auth","true");

javax.mail.Session mailsess = Session.getDefaultInstance(prop, null);
mailsess.setDebug(sessionDebug);

Message msg = new MimeMessage(mailsess);
msg.setFrom(new InternetAddress(sen));
InternetAddress[] address= {new InternetAddress(rec)};
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject(sub);
msg.setText(mess);

Transport transport = mailsess.getTransport("smtp");
transport.connect(host, username, password);
transport.sendMessage(msg,msg.getAllRecipients());   
transport.close();
//transport.send(msg);
%>
出错提示：
exception org.apache.jasper.JasperException: Could not connect to SMTP host: smtp.gmail.com, port: 25
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause javax.servlet.ServletException: Could not connect to SMTP host: smtp.gmail.com, port: 25
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:843)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:776)
org.apache.jsp.JavaMail_jsp._jspService(JavaMail_jsp.java:159)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 25;
  nested exception is:
java.net.ConnectException: Connection timed out: connect
com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1282)
com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
javax.mail.Service.connect(Service.java:275)
javax.mail.Service.connect(Service.java:156)
org.apache.jsp.JavaMail_jsp._jspService(JavaMail_jsp.java:90)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)还请帮忙指点指点，谢谢了俄

解决方案 »

  1.   

    楼主
    把杀毒软件和防火墙先关一下
    我以前发生这样的问题是我的防火墙不让outlook之外的东西访问25端扣的
      

  2.   

    我关闭之后还是出现同样的错误。
    顺便问一句，需要安装APARCHE JAME MAIL SERVER吗？
      

  3.   

    <%@ page import="java.util.*" %>
    <%@ page import="javax.mail.*" %>
    <%@ page import="javax.activation.*" %>
    <%@ page import="javax.mail.internet.*" %><%@ page contentType="text/html;charset=GB2312" %>
    这些应该放在<html>上边吧？
      

  4.   

    ee,因该是网络的问题吧
    -----------------------
    我可以上网，网络还会有什么问题呢？ <%@ page import="java.util.*" %>
    <%@ page import="javax.mail.*" %>
    <%@ page import="javax.activation.*" %>
    <%@ page import="javax.mail.internet.*" %><%@ page contentType="text/html;charset=GB2312" %>
    这些应该放在<html>上边吧？
    ---------------------------------------------------
    这些我改了还是一样