关于java开发邮件接收程序的一点总结

用java开发邮件接收程序需要用到javamail包，资源地址：http://java.sun.com/products/javamail/，最新版是 JavaMail 1.4.3 ，下载地址是：http://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/VerifyItem-Start/javamail-1.4.3.zip?BundledLineItemUUID=gqFIBe.oRjUAAAEl1r4xay_N&OrderID=t1BIBe.o3q4AAAElxL4xay_N&ProductID=J3tIBe.pJGsAAAElR5Jh6wjK&FileName=/javamail-1.4.3.zip。
里面有两个关键的jar包，分别是mail.jar和activation.jar，一定要放在java目录/jre/lib/ext目录里面，否则会在编译时报错，错误信息如下：
ReceiveMail.java:10: package javax.mail does not exist import javax.mail.*; ^ ReceiveMail.java:11: package javax.mail.internet does not exist import javax.mail.internet.*;
 
下面贴出来一个例子代码，供参考（当然你也可以网上查到）
 
// java 收邮件程序 import java.io.*; import java.text.*; import java.util.*; import javax.mail.*; import javax.mail.internet.*; /** * 有一封邮件就需要建立一个ReciveMail对象 */ public class ReceiveMailDemo { private MimeMessage mimeMessage = null; private String saveAttachPath = ""; //附件下载后的存放目录 private StringBuffer bodytext = new StringBuffer();//存放邮件内容 private String dateformat = "yy-MM-dd HH:mm"; //默认的日前显示格式 public ReceiveMailDemo(MimeMessage mimeMessage) { this.mimeMessage = mimeMessage; } public void setMimeMessage(MimeMessage mimeMessage) { this.mimeMessage = mimeMessage; } /** * 获得发件人的地址和姓名 */ public String getFrom() throws Exception { InternetAddress address[] = (InternetAddress[]) mimeMessage.getFrom(); String from = address[0].getAddress(); if (from == null) from = ""; String personal = address[0].getPersonal(); if (personal == null) personal = ""; String fromaddr = personal + "<" + from + ">"; return fromaddr; } /** * 获得邮件的收件人，抄送，和密送的地址和姓名，根据所传递的参数的不同 "to"----收件人 "cc"---抄送人地址 "bcc"---密送人地址 */ public String getMailAddress(String type) throws Exception { String mailaddr = ""; String addtype = type.toUpperCase(); InternetAddress[] address = null; if (addtype.equals("TO") || addtype.equals("CC")|| addtype.equals("BCC")) { if (addtype.equals("TO")) { address = (InternetAddress[]) mimeMessage.getRecipients(Message.RecipientType.TO); } else if (addtype.equals("CC")) { address = (InternetAddress[]) mimeMessage.getRecipients(Message.RecipientType.CC); } else { address = (InternetAddress[]) mimeMessage.getRecipients(Message.RecipientType.BCC); } if (address != null) { for (int i = 0; i < address.length; i++) { String email = address[i].getAddress(); if (email == null) email = ""; else { email = MimeUtility.decodeText(email); } String personal = address[i].getPersonal(); if (personal == null) personal = ""; else { personal = MimeUtility.decodeText(personal); } String compositeto = personal + "<" + email + ">"; mailaddr += "," + compositeto; } mailaddr = mailaddr.substring(1); } } else { throw new Exception("Error emailaddr type!"); } return mailaddr; } /** * 获得邮件主题 */ public String getSubject() throws MessagingException { String subject = ""; try { subject = MimeUtility.decodeText(mimeMessage.getSubject()); if (subject == null) subject = ""; } catch (Exception exce) {} return subject; } /** * 获得邮件发送日期 */ public String getSentDate() throws Exception { Da

关于java开发邮件接收程序的一点总结

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