本文格式為Word版，下載可任意編輯——java實(shí)現(xiàn)后臺(tái)自動(dòng)發(fā)郵件功能java實(shí)現(xiàn)后臺(tái)自動(dòng)發(fā)郵件功能

java后臺(tái)自動(dòng)發(fā)郵件功能怎樣實(shí)現(xiàn)呢?下面是我?guī)淼慕鉀Q方法，夢(mèng)想對(duì)您有所扶助!

web.xml文件

?xmlversion=1.0encoding=UTF-8?

!DOCTYPEweb-appPUBLIC-//SunMicrosystems,Inc.//DTDWebApplication2.3//EN/dtd/web-app_2_3.dtd

web-app

servlet

servlet-namemailsenderservlet/servlet-name!--郵件發(fā)送程序--

servlet-classcom.email.MailSenderServlet/servlet-class

init-param

param-nameserver/param-name!--郵件服務(wù)器SMTP地址--

/param-value

/init-param

init-param

param-nameport/param-name!--郵件服務(wù)器SMTP端口--

param-value25/param-value

/init-param

init-param

param-nameaddress/param-name!--郵件地址--

param-valueusername@163.com/param-value

/init-param

init-param

param-nameusername/param-name!--郵件賬號(hào)--

param-valueusername/param-value

/init-param

init-param

param-namepassword/param-name!--密碼--

param-value******/param-value

/init-param

init-param

param-namevalidate/param-name!--SMTP服務(wù)器是否要求驗(yàn)證--

param-valuetrue/param-value

/init-param

init-param

param-nametime/param-name!--掃描數(shù)據(jù)庫時(shí)間間隔（分鐘）--

param-value5/param-value

/init-param

load-on-startup1/load-on-startup

/servlet

/web-app

servlet:

packagecom.email;

importjavax.servlet.*;

importjavax.servlet.http.*;

importjava.io.*;

publicclassMailSenderServlet

extendsHttpServlet

privateMailSendersender;

privateThreadt;

publicvoidinitthrowsServletException

sender=newMailSender;

sender.setRootroot;

Stringserver=getInitParameterserver;

Stringport=getInitParameterport;

Stringaddress=getInitParameteraddress;

Stringusername=getInitParameterusername;

Stringpassword=getInitParameterpassword;

ifserver==null||port==null||address==null||username==null||

password==null

System.out.println系統(tǒng)文件web.xml錯(cuò)誤：郵件發(fā)送程序初始化失?。?

return;

sender.setServerserver;

sender.setPortport;

sender.setAddressaddress;

sender.setUsernameusername;

sender.setPasswordpassword;

Stringtime=getInitParametertime;

iftime!=null

sender.setTimeInteger.parseInttime;

Stringvalidate=getInitParametervalidate;

ifvalidate!=null

sender.setValidateBoolean.valueOfvalidate.booleanValue;

t=newThreadsender;

t.start;//啟動(dòng)郵件發(fā)送線程

publicvoiddestroy

sender.stop;//中斷郵件發(fā)送線程

try

t.join1000;

ift.isAlive

System.out.println郵件發(fā)送線程未中斷。;

catchExceptione

郵件發(fā)送程序

packagecom.email;

importjava.io.*;

importjava.sql.*;

importjava.util.*;

importjava.util.Date;

importjavax.activation.*;

importjavax.mail.*;

importjavax.mail.Message.*;

importernet.*;

/**

*pCopyright:Copyrightc2022/p

*@authorflyxxxxx@163.com

*@version1.0

*/

publicclassMailSender

implementsRunnable

privateinttime=5*60*1000;//掃描數(shù)據(jù)庫時(shí)間間隔

privatebooleanflag=true;//中斷線程標(biāo)記

privateStringserver=;//SMTP服務(wù)器地址

privateStringport=25;//SMTP服務(wù)器端口

privateStringaddress;//用于發(fā)送EMAIL的發(fā)送者地址

privateStringusername;//發(fā)送者的用戶名

privateStringpassword;//發(fā)送者的密碼

privatebooleanvalidate=true;//郵件服務(wù)器是否要求驗(yàn)證

privateFileroot=null;//WEB根目次

MailConfigManagermanager=MailConfigManager.getInstance;

publicMailSender

publicvoidsetAddressStringaddress

this.address=address;

publicvoidsetPasswordStringpassword

this.password=password;

publicvoidsetPortStringport

ifport!=nullport.length0

this.port=port;

publicvoidsetServerStringserver

this.server=server;

publicvoidsetUsernameStringusername

this.username=username;

publicvoidsetValidatebooleanvalidate

this.validate=validate;

publicvoidsetTimeintminute

this.time=minute*60*1000;

publicvoidrun

longlastTime=newDate.getTime;//保存前一次發(fā)送郵件的時(shí)間

whileflag//服務(wù)器中斷時(shí)退出線程

longk=newDate.getTime-lastTime;

ifk-1000//防止系統(tǒng)修改時(shí)間

lastTime=newDate.getTime;

continue;

ifktime//超過設(shè)定時(shí)間間隔開頭發(fā)送郵件

sendData;

lastTime=newDate.getTime;

try

Thread.sleep100;

catchExceptione

publicvoidstop

flag=false;

/**

*檢索數(shù)據(jù)庫，并發(fā)送郵件

*/

privatevoidsendData

ResultSetrs=null;//讀取數(shù)據(jù)庫數(shù)據(jù)

try

Sessionsession=Session.getInstancegetProperties,newAuthentic;

whileflag//服務(wù)器中斷時(shí)退出線程

StringtoAddress=null;//發(fā)送地址（從rs中得到）

Stringsubject=null;//郵件主題

Stringcontent=null;//郵件內(nèi)容

Stringfile[]=null;//全體附件（十足路徑）

sendMailsession,toAddress,subject,content,file;//發(fā)送郵件

catchExceptione

e.printStackTrace;

finally

ifrs!=null

try

rs.close;

catchSQLExceptione

/**

*發(fā)送郵件

*@paramsession會(huì)話

*@paramtoAddress目的`地址

*@paramsubject郵件主題

*@paramcontent郵件內(nèi)容（HTML）

*@paramfiles郵件附件

*@return是否發(fā)送告成

*/

privatebooleansendMailSessionsession,StringtoAddress,Stringsubject,

Stringcontent,String[]files

toAddress=lijin@;

try

Messagers=newMimeMessagesession;

Addressfrom=newInternetAddressaddress;

rs.setFromfrom;//發(fā)送地址

rs.setRecipientRecipientType.TO,newInternetAddresstoAddress;//接收地址

rs.setSubjectsubject;//郵件主題

Multipartmp=newMimeMultipart;

BodyParthtml=newMimeBodyPart;

html.setContentcontent,text/html;charset=GBK;//郵件HTML內(nèi)容

mp.addBodyParthtml;

iffiles!=nullfiles.length0//郵件附件

forinti=0;ifiles.length;i++

MimeBodyPartmbp=newMimeBodyPart;

FileDataSourcefds=newFileDataSourcefiles[i];

mbp.setDataHandlernewDataHandlerfds;

mbp.setFileNameMimeUtility.encodeWordfiles[i],GBK,null;

mp.addBodyPartmbp;

rs.setContentmp;//郵