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标题:关于用JAVA收邮件的问题
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dongyongbo
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关于用JAVA收邮件的问题
以下是详细代码,我在我自已机上装的邮件服务器,
可以发邮件,但是今天写个收邮件的就一直报异常,
在网上找了很多资料,代码都差不多。
我是在servlet里写的,首先执行时默认调用doget()
方法,然后在doget()方法里写一个表单,表单提交方式是post,提交后调用本servlet的dopost()方法。

package zhidao1;
import javax.servlet.*;
import javax.servlet.http.*;
import *;
import java.util.*;
import javax.mail.*;

public class UserInfo extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";
    //Initialize global variables
    public void init() throws ServletException {
    }
    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        out.println("<html>");
        out.println("<head><title>UserInfo</title></head>");
        out.println("<body bgcolor=\"#ffffff\">");
        out.println("<H1>输入详细信息以接收邮件</H1>");
        out.println("<form action='userinfo' method='post'>");
        out.println("<table width='296' height='144' border='0'>");
        out.println("<tr><td width='81' height='46'>用户ID:</td><td width='239'><input type='text' name='t1'></td></tr>");
        out.println("<tr><td>密 码:</td><td><input type='text' name='t2'></td></tr>");
        out.println("<tr><td height='34'>主 机:</td><td><input type='text' name='t3'></td></tr>");
        out.println("<tr><td> </td><td><input type='submit' name='Submit' value='提交'></td></tr>");
        out.println("</table>");
        out.println("</form>");
        out.println("</body>");
        out.println("</html>");
        out.close();
    }
    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        //request.setCharacterEncoding("GBK");
        //response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        String host = request.getParameter("t3");
        String usename = request.getParameter("t1");
        String password = request.getParameter("t2");
        try{
            Properties pro = System.getProperties();
            pro.setProperty("mail.pop3s.rsetbeforequit","true");
            pro.setProperty("mail.pop3.rsetbeforequit","true");
            Session session = Session.getInstance(pro, null);
            Store store = session.getStore("pop3");
            store.connect(host,usename,password);
            Folder folder = store.getFolder("INBOX");
//            if(folder==null){
//                throw new Exception("INBOX error");
//            }
            folder.open(Folder.READ_ONLY);
            Message message[] = folder.getMessages();
            out.println("<table align='center'>");
            out.println("<tr><td>MsgNO</td><td>发件人</td><td>主题</td><td>日期</td></tr>");
            for(int i=0;i<message.length;i++){
                out.println("<tr><td>"+(i+1)+"</td><td>"+message[i].getFrom()[0]+"</td><td>"+message[i].getSubject()+"</td><td>"+message[i].getSentDate().toString()+"</td></tr>");
            }
            out.println("</table>");
            store.close();
        }catch(Exception ex){
            ex.printStackTrace();
        }
        out.close();
    }
    //Clean up resources
    public void destroy() {
    }
}
异常代码如下:
javax.mail.MessagingException: Connect failed;
  nested exception is:
  Connection refused: connect
 at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:106)
 at javax.mail.Service.connect(Service.java:234)
 at javax.mail.Service.connect(Service.java:135)
 at zhidao1.UserInfo.doPost(UserInfo.java:55)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
 at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
 at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
 at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
 at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
 at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
 at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
 at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
 at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
 at org.apache.tomcat.(PoolTcpEndpoint.java:577)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
 at java.lang.Thread.run(Thread.java:534)
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2007-12-17 20:25
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