/*
在java版經常看到有人問如何用javamail發送郵件？如何接收郵件？如何訪問多個文件夾等。問題零散，而歷史的回復早已經淹沒在問題的海洋之中。
本人之前所做過一個java項目，其中包含有WebMail功能，當初為用java實現而對javamail摸索了一段時間，總算有點收獲。看到論壇中的經常有此方面的問題，因此把我的一些經驗帖出來，希望對大家有些幫助。
此篇僅介紹用javamail實現發送郵件功能，其中涉及smtp認證，郵件附件發送，及HTML內容郵件等。
其它有關多郵箱的實現，接收POP3郵件及IMAP等內容，將在后續文章中介紹。
如下程序需要：javamail，JAF包，j2ee.jar包含了上述兩個包，建議大家安裝J2SDKEE或直接拷貝j2ee.jar，將其添加到jbuilder的library中，或系統ClassPath中
*/
?
package com.me.util.mail;
/**
?* @author Zhangkun aistill@msn.com
?* @version 1.0
?*/
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.Date;
import javax.activation.*;
import java.io.*;
import com.me.util.*;
public class sendMail {
? private MimeMessage mimeMsg;? //MIME郵件對象
? private Session session;????? //郵件會話對象
? private Properties props;???? //系統屬性
? private boolean needAuth = false;? //smtp是否需要認證
? private String username = "";? //smtp認證用戶名和密碼
? private String password = "";
? private Multipart mp;??? //Multipart對象,郵件內容,標題,附件等內容均添加到其中后再生成MimeMessage對象
?
?/**
? *
? */
? public sendMail() {
??? setSmtpHost(getConfig.mailHost);//如果沒有指定郵件服務器,就從getConfig類中獲取
??? createMimeMessage();
? }
? public sendMail(String smtp){
??? setSmtpHost(smtp);
??? createMimeMessage();
? }
?
?/**
? * @param hostName String
? */
? public void setSmtpHost(String hostName) {
??? System.out.println("設置系統屬性：mail.smtp.host = "+hostName);
??? if(props == null)props = System.getProperties();???????? //獲得系統屬性對象
??? props.put("mail.smtp.host",hostName);???????????????? //設置SMTP主機
? }
?/**
? * @return boolean
? */
? public boolean createMimeMessage()
? {
??? try{
????? System.out.println("準備獲取郵件會話對象！";
????? session = Session.getDefaultInstance(props,null);?? //獲得郵件會話對象
??? }
??? catch(Exception e){
????? System.err.println("獲取郵件會話對象時發生錯誤！"+e);
????? return false;
??? }
??? System.out.println("準備創建MIME郵件對象！";
??? try{
????? mimeMsg = new MimeMessage(session);???????????????? //創建MIME郵件對象
????? mp = new MimeMultipart();
????? return true;
??? }
??? catch(Exception e){
????? System.err.println("創建MIME郵件對象失敗！"+e);
????? return false;
??? }
? }
?
?/**
? * @param need boolean
? */
? public void setNeedAuth(boolean need) {
??? System.out.println("設置smtp身份認證：mail.smtp.auth = "+need);
??? if(props == null)props = System.getProperties();
??? if(need){
????? props.put("mail.smtp.auth","true";
??? }else{
????? props.put("mail.smtp.auth","false";
??? }
? }
?
?/**
? * @param name String
? * @param pass String
? */
? public void setNamePass(String name,String pass) {
??? username = name;
??? password = pass;
? }
?/**
? * @param mailSubject String
? * @return boolean
? */
? public boolean setSubject(String mailSubject) {
??? System.out.println("設置郵件主題！";
??? try{
????? mimeMsg.setSubject(mailSubject);
????? return true;
??? }
??? catch(Exception e) {
????? System.err.println("設置郵件主題發生錯誤！";
????? return false;
??? }
? }
?
?/**
? * @param mailBody String
? */
? public boolean setBody(String mailBody) {
??? try{
????? BodyPart bp = new MimeBodyPart();
????? bp.setContent("<meta http-equiv=Content-Type content=text/html; charset=gb2312>"+mailBody,"text/html;charset=GB2312";
????? mp.addBodyPart(bp);
????? return true;
??? }
??? catch(Exception e){
????? System.err.println("設置郵件正文時發生錯誤！"+e);
????? return false;
??? }
? }
?/**
? * @param name String
? * @param pass String
? */
? public boolean addFileAffix(String filename) {
?System.out.println("增加郵件附件："+filename);
?try{
????? BodyPart bp = new MimeBodyPart();
????? FileDataSource fileds = new FileDataSource(filename);
????? bp.setDataHandler(new DataHandler(fileds));
????? bp.setFileName(fileds.getName());
????? mp.addBodyPart(bp);
????? return true;
??? }
??? catch(Exception e){
????? System.err.println("增加郵件附件："+filename+"發生錯誤！"+e);
????? return false;
??? }
? }
?
?/**
? * @param name String
? * @param pass String
? */
? public boolean setFrom(String from) {
??? System.out.println("設置發信人！";
??? try{
????? mimeMsg.setFrom(new InternetAddress(from));???????????? //設置發信人
????? return true;
??? }
??? catch(Exception e)
??? { return false; }
? }
?/**
? * @param name String
? * @param pass String
? */
? public boolean setTo(String to){
??? if(to == null)return false;
??? try{
????? mimeMsg.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
????? return true;
??? }
??? catch(Exception e)
??? {?? return false;?? }
? }
?/**
? * @param name String
? * @param pass String
? */
? public boolean setCopyTo(String copyto)
? {
??? if(copyto == null)return false;
??? try{
????? mimeMsg.setRecipients(Message.RecipientType.CC,(Address[])InternetAddress.parse(copyto));
????? return true;
??? }
??? catch(Exception e)
??? { return false; }
? }
?/**
? * @param name String
? * @param pass String
? */
? public boolean sendout()
? {
??? try{
????? mimeMsg.setContent(mp);
????? mimeMsg.saveChanges();
????? System.out.println("正在發送郵件....";
????? Session mailSession = Session.getInstance(props,null);
????? Transport transport = mailSession.getTransport("smtp";
????? transport.connect((String)props.get("mail.smtp.host",username,password);
????? transport.sendMessage(mimeMsg,mimeMsg.getRecipients(Message.RecipientType.TO));
????? //transport.send(mimeMsg);
????? System.out.println("發送郵件成功！";
????? transport.close();
????? return true;
??? }
??? catch(Exception e)
??? {
????? System.err.println("郵件發送失敗！"+e);
????? return false;
??? }
? }
? /**
?? *? Just do it as this
?? */
? public static void main(String[] args) {
??? String mailbody = "<meta http-equiv=Content-Type content=text/html; charset=gb2312>"+
??????? "<div align=center><a href=http://www.csdn.net> csdn </a></div>";
??? sendMail themail = new sendMail("smtp.msn.com";
??? themail.setNeedAuth(true);
??? if(themail.setSubject("標題" == false) return;
??? if(themail.setBody(mailbody) == false) return;
??? if(themail.setTo("gates@msn.com" == false) return;
??? if(themail.setFrom("bill@msn.com" == false) return;
??? if(themail.addFileAffix("c:\\boot.ini" == false) return;
??? themail.setNamePass("user","password";
??? if(themail.sendout() == false) return;???
? }
}