java实现简单发送邮件功能-mile米乐体育

本文实例为大家分享了java实现简单发送邮件的具体代码，供大家参考，具体内容如下

添加依赖

javax.mail javax.mail-api 1.6.2 com.sun.mail javax.mail 1.6.2

自定义异常类

public class emailexception extends exception { public emailexception(string message) { super(message); } public emailexception() { super(); } /** * */ private static final long serialversionuid = 115631651651651651l; }

imap协议读取邮件

import java.io.bufferedinputstream; import java.io.bufferedoutputstream; import java.io.file; import java.io.filenotfoundexception; import java.io.fileoutputstream; import java.io.ioexception; import java.io.inputstream; import java.io.unsupportedencodingexception; import java.text.simpledateformat; import java.util.date; import java.util.properties; import javax.mail.address; import javax.mail.bodypart; import javax.mail.flags; import javax.mail.folder; import javax.mail.message; import javax.mail.messagingexception; import javax.mail.multipart; import javax.mail.part; import javax.mail.session; import javax.mail.store; import javax.mail.internet.internetaddress; import javax.mail.internet.mimemessage; import javax.mail.internet.mimemultipart; import javax.mail.internet.mimeutility; import com.sun.mail.util.mailsslsocketfactory; public class imapreceivemail { private string user = "";//账号 private string password = "";//密码 private string host = ""; // smtp服务器 // private properties props = null; private folder folder = null;//收件箱 private store store = null;//实例对象 // final string pop3 = "imap"; final string imap = "imap"; public imapreceivemail(string user,string password) { this.password = password;//密码 this.user = user;//账户 } /** * @param message 邮件对象 * @param to 收件人 * @throws messagingexception * @throws ioexception */ // public void forwardmail(message message,string to) throws messagingexception, ioexception { // message forward = new mimemessage(session); // forward.setsubject(message.getsubject()); // forward.setfrom(new internetaddress(to)); // forward.setrecipient(message.recipienttype.to, new internetaddress(to)); // forward.setsentdate(new date()); // forward.setcontent(message.getcontent(), message.getcontenttype()); // // transport smtp = session.gettransport("smtp"); // smtp.connect(host, user, password);//连接服务器的邮箱 // smtp.sendmessage(forward, forward.getallrecipients()); // smtp.close(); // } /** * 接收邮件 */ public folder resceive() throws exception { /** * 因为现在使用的是163邮箱 而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱 就需要换成 好未来邮箱的 * pop服务器地址 pop.263.net 和 端口 110 */ string duankou = ""; // 端口号 string servicepath = ""; // 服务器地址 if(user==null||user.length()==0) throw new emailexception("账户不能为空！！！！"); if(password==null||password.length()==0) throw new emailexception("密码不能为空！！！！"); if(user.contains("@163")) { duankou = "143"; // 端口号 servicepath = "imap.163.com"; // 服务器地址 }else if(user.contains("@qq")) { duankou = "993"; // 端口号 servicepath = "imap.qq.com"; // 服务器地址 }else { throw new emailexception("不支持该协议"); } // 准备连接服务器的会话信息 properties props = new properties(); props.setproperty("mail.store.protocol", imap); // 使用pop3协议 props.setproperty("mail.imap.socketfactory.fallback", "false"); props.setproperty("mail.imap.port", duankou); // 端口 props.setproperty("mail.imap.socketfactory.port", duankou); // 端口 props.setproperty("mail.transport.protocol", "smtp");// 发送邮件协议名称 props.setproperty("mail.smtp.auth", "true"); //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条 props.setproperty("mail.host", host); //关闭读取附件时分批获取 base64 输入流的配置 props.setproperty("mail.imap.partialfetch", "false"); props.setproperty("mail.imaps.partialfetch", "false"); // props.setproperty("mail.pop3.host", servicepath); // pop3服务器 // final string ssl_factory = "javax.net.ssl.sslsocketfactory"; // security.addprovider(new com.sun.net.ssl.internal.ssl.provider()); // props.setproperty("mail.imap.socketfactory.class", ssl_factory); mailsslsocketfactory sf = new mailsslsocketfactory();//ssl加密 sf.settrustallhosts(true); props.put("mail.imap.ssl.enable", "true"); props.put("mail.imap.ssl.socketfactory", sf); // 创建session实例对象 session session = session.getinstance(props); session.setdebug(false); store = session.getstore(imap); store.connect(servicepath,user,password); // 163邮箱程序登录属于第三方登录所以这里的密码是163给的授权密码而并非普通的登录密码 // 获得收件箱 folder = store.getfolder("inbox"); /* * folder.read_only：只读权限 folder.read_write：可读可写（可以修改邮件的状态） */ folder.open(folder.read_write); // 打开收件箱 // 由于pop3协议无法获知邮件的状态,所以getunreadmessagecount得到的是收件箱的邮件总数 // system.out.println("未读邮件数: " folder.getunreadmessagecount()); // 由于pop3协议无法获知邮件的状态,所以下面得到的结果始终都是为0 // system.out.println("删除邮件数: " folder.getdeletedmessagecount()); // system.out.println("新邮件: " folder.getnewmessagecount()); // 获得收件箱中的邮件总数 // system.out.println("邮件总数: " folder.getmessagecount()); // 得到收件箱中的所有邮件,并解析 // message[] messages = folder.getmessages(); // parsemessage(messages); // 得到收件箱中的所有邮件并且删除邮件 // deletemessage(messages); // 释放资源 // folder.close(true); // store.close(); return folder; } public void colsefolder() throws messagingexception {//关闭资源 if(folder!=null) { folder.close(); } if(store!=null) { store.close(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public void parsemessage(message... messages) throws messagingexception, ioexception { if (messages == null || messages.length < 1) throw new messagingexception("未找到要解析的邮件!"); // 解析所有邮件 for (int i = 0, count = messages.length; i < count; i ) { mimemessage msg = (mimemessage) messages[i]; system.out.println("------------------解析第" msg.getmessagenumber() "封邮件-------------------- "); system.out.println("主题: " getsubject(msg)); system.out.println("发件人: " getfrom(msg)); system.out.println("收件人：" getreceiveaddress(msg, null)); system.out.println("发送时间：" getsentdate(msg, null)); system.out.println("是否已读：" isseen(msg)); system.out.println("邮件优先级：" getpriority(msg)); system.out.println("是否需要回执：" isreplysign(msg)); system.out.println("邮件大小：" msg.getsize() * 1024 "kb"); boolean iscontainerattachment = iscontainattachment(msg); system.out.println("是否包含附件：" iscontainerattachment); if (iscontainerattachment) { saveattachment(msg, "f:\\mailtest\\" msg.getsubject() "_" i "_"); // 保存附件 } stringbuffer content = new stringbuffer(30); getmailtextcontent(msg, content); system.out.println("邮件正文：" (content.length() > 100 ? content.substring(0, 100) "..." : content)); system.out.println("------------------第" msg.getmessagenumber() "封邮件解析结束-------------------- "); system.out.println(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public void deletemessage(message... messages) throws messagingexception, ioexception { if (messages == null || messages.length < 1) throw new messagingexception("未找到要解析的邮件!"); // 解析所有邮件 for (int i = 0, count = messages.length; i < count; i ) { /** * 邮件删除 */ message message = messages[i]; string subject = message.getsubject(); // set the delete flag to true message.setflag(flags.flag.deleted, true); system.out.println("marked delete for message: " subject); } } /** * 获得邮件主题 * * @param msg 邮件内容 * @return 解码后的邮件主题 */ public string getsubject(mimemessage msg) throws unsupportedencodingexception, messagingexception { return mimeutility.decodetext(msg.getsubject()); } /** * 获得邮件发件人 * * @param msg 邮件内容 * @return 姓名 * @throws messagingexception * @throws unsupportedencodingexception */ public string getfrom(mimemessage msg) throws messagingexception, unsupportedencodingexception { string from = ""; address[] froms = msg.getfrom(); if (froms.length < 1) throw new messagingexception("没有发件人!"); internetaddress address = (internetaddress) froms[0]; string person = address.getpersonal(); if (person != null) { person = mimeutility.decodetext(person) " "; } else { person = ""; } from = person "<" address.getaddress() ">"; return from; } public string getfromaddress(mimemessage msg) throws messagingexception, unsupportedencodingexception { string from = ""; address[] froms = msg.getfrom(); if (froms.length < 1) throw new messagingexception("没有发件人!"); internetaddress address = (internetaddress) froms[0]; from = address.getaddress(); return from; } /** * 根据收件人类型，获取邮件收件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人 *

* message.recipienttype.to 收件人 *

* message.recipienttype.cc 抄送 *

* message.recipienttype.bcc 密送 *

pop3协议接收邮件

import java.io.bufferedinputstream; import java.io.bufferedoutputstream; import java.io.file; import java.io.filenotfoundexception; import java.io.fileoutputstream; import java.io.ioexception; import java.io.inputstream; import java.io.unsupportedencodingexception; import java.text.simpledateformat; import java.util.date; import java.util.properties; import javax.mail.address; import javax.mail.bodypart; import javax.mail.flags; import javax.mail.folder; import javax.mail.message; import javax.mail.messagingexception; import javax.mail.multipart; import javax.mail.part; import javax.mail.session; import javax.mail.store; import javax.mail.internet.internetaddress; import javax.mail.internet.mimemessage; import javax.mail.internet.mimemultipart; import javax.mail.internet.mimeutility; import com.sun.mail.util.mailsslsocketfactory; /** * 使用pop3协议接收邮件 */ public class pop3receivemail { private string user = "";//账号 private string password = "";//密码 // private properties props = null; private folder folder = null;//收件箱 private store store = null;//实例对象 final string pop3 = "pop3"; // final string imap = "imap"; public pop3receivemail(string user,string password) { this.password = password;//密码 this.user = user;//账户 } /** * 接收邮件 */ public folder resceive() throws exception { /** * 因为现在使用的是163邮箱 而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱 就需要换成 好未来邮箱的 * pop服务器地址 pop.263.net 和 端口 110 */ string duankou = ""; // 端口号 string servicepath = ""; // 服务器地址 if(user==null||user.length()==0) throw new emailexception("账户不能为空！！！！"); if(password==null||password.length()==0) throw new emailexception("密码不能为空！！！！"); if(user.contains("@163")) { duankou = "110"; // 端口号 servicepath = "pop3.163.com"; // 服务器地址 }else if(user.contains("@qq")) { duankou = "995"; // 端口号 servicepath = "pop.qq.com"; // 服务器地址 }else { throw new emailexception("不支持该协议"); } // 准备连接服务器的会话信息 properties props = new properties(); props.setproperty("mail.store.protocol", pop3); // 使用pop3协议 // props.setproperty("mail.transport.protocol", pop3); // 使用pop3协议 props.setproperty("mail.pop3.port", duankou); // 端口 props.setproperty("mail.pop3.host", servicepath); // pop3服务器 props.setproperty("mail.pop3.socketfactory.fallback", "true"); mailsslsocketfactory sf = new mailsslsocketfactory();//ssl加密 sf.settrustallhosts(true); props.put("mail.pop3.ssl.enable", "true"); props.put("mail.pop3.ssl.socketfactory", sf); // final string ssl_factory = "javax.net.ssl.sslsocketfactory"; // security.addprovider(new com.sun.net.ssl.internal.ssl.provider()); // props.setproperty("mail.pop3.socketfactory.class", ssl_factory); // 创建session实例对象 session session = session.getinstance(props); store = session.getstore(pop3); store.connect(servicepath,user,password); // 163邮箱程序登录属于第三方登录所以这里的密码是163给的授权密码而并非普通的登录密码 // 获得收件箱 folder = store.getfolder("inbox"); /* * folder.read_only：只读权限 folder.read_write：可读可写（可以修改邮件的状态） */ // folder.open(folder.read_write); // 打开收件箱 folder.open(folder.read_write); // 打开收件箱 // 由于pop3协议无法获知邮件的状态,所以getunreadmessagecount得到的是收件箱的邮件总数 // system.out.println("未读邮件数: " folder.getunreadmessagecount()); // 由于pop3协议无法获知邮件的状态,所以下面得到的结果始终都是为0 // system.out.println("删除邮件数: " folder.getdeletedmessagecount()); // system.out.println("新邮件: " folder.getnewmessagecount()); // 获得收件箱中的邮件总数 // system.out.println("邮件总数: " folder.getmessagecount()); // 得到收件箱中的所有邮件,并解析 // message[] messages = folder.getmessages(); // parsemessage(messages); // 得到收件箱中的所有邮件并且删除邮件 // deletemessage(messages); // 释放资源 // folder.close(true); // store.close(); return folder; } public void colsefolder() throws messagingexception {//关闭资源 if(folder!=null) { folder.close(); } if(store!=null) { store.close(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public void parsemessage(message... messages) throws messagingexception, ioexception { if (messages == null || messages.length < 1) throw new messagingexception("未找到要解析的邮件!"); // 解析所有邮件 for (int i = 0, count = messages.length; i < count; i ) { mimemessage msg = (mimemessage) messages[i]; system.out.println("------------------解析第" msg.getmessagenumber() "封邮件-------------------- "); system.out.println("主题: " getsubject(msg)); system.out.println("发件人: " getfrom(msg)); system.out.println("收件人：" getreceiveaddress(msg, null)); system.out.println("发送时间：" getsentdate(msg, null)); system.out.println("是否已读：" isseen(msg)); system.out.println("邮件优先级：" getpriority(msg)); system.out.println("是否需要回执：" isreplysign(msg)); system.out.println("邮件大小：" msg.getsize() * 1024 "kb"); boolean iscontainerattachment = iscontainattachment(msg); system.out.println("是否包含附件：" iscontainerattachment); if (iscontainerattachment) { saveattachment(msg, "f:\\mailtest\\" msg.getsubject() "_" i "_"); // 保存附件 } stringbuffer content = new stringbuffer(30); getmailtextcontent(msg, content); system.out.println("邮件正文：" (content.length() > 100 ? content.substring(0, 100) "..." : content)); system.out.println("------------------第" msg.getmessagenumber() "封邮件解析结束-------------------- "); system.out.println(); } } /** * 解析邮件 * * @param messages 要解析的邮件列表 */ public void deletemessage(message... messages) throws messagingexception, ioexception { if (messages == null || messages.length < 1) throw new messagingexception("未找到要解析的邮件!"); // 解析所有邮件 for (int i = 0, count = messages.length; i < count; i ) { /** * 邮件删除 */ message message = messages[i]; string subject = message.getsubject(); // set the delete flag to true message.setflag(flags.flag.deleted, true); system.out.println("marked delete for message: " subject); } } /** * 获得邮件主题 * * @param msg 邮件内容 * @return 解码后的邮件主题 */ public string getsubject(mimemessage msg) throws unsupportedencodingexception, messagingexception { return mimeutility.decodetext(msg.getsubject()); } /** * 获得邮件发件人 * * @param msg 邮件内容 * @return 姓名 * @throws messagingexception * @throws unsupportedencodingexception */ public string getfrom(mimemessage msg) throws messagingexception, unsupportedencodingexception { string from = ""; address[] froms = msg.getfrom(); if (froms.length < 1) throw new messagingexception("没有发件人!"); internetaddress address = (internetaddress) froms[0]; string person = address.getpersonal(); if (person != null) { person = mimeutility.decodetext(person) " "; } else { person = ""; } from = person "<" address.getaddress() ">"; return from; } public string getfromaddress(mimemessage msg) throws messagingexception, unsupportedencodingexception { string from = ""; address[] froms = msg.getfrom(); if (froms.length < 1) throw new messagingexception("没有发件人!"); internetaddress address = (internetaddress) froms[0]; from = address.getaddress(); return from; } /** * 根据收件人类型，获取邮件收www.cppcns.com件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人 *

* message.recipienttype.to 收件人 *

* message.recipienttype.cc 抄送 *

* message.recipienttype.bcc 密送 *

发送邮件

import java.io.file; import java.io.ioexception; import java.io.unsupportedencodingexception; import java.security.generalsecurityexception; import java.util.date; import java.util.properties; import java.util.uuid; import java.util.regex.matcher; import java.util.regex.pattern; import javax.activation.datahandler; import javax.activation.filedatasource; import javax.mail.bodypart; import javax.mail.message; import javax.mail.messagingexception; import javax.mail.multipart; import javax.mail.session; import javax.mail.transport; import javax.mail.internet.addressexception; import javax.mail.internet.internetaddress; import javax.mail.internet.mimebodypart; import javax.mail.internet.mimemessage; import javax.mail.internet.mimemultipart; import javax.mail.internet.mimeutility; import com.sun.mail.util.mailsslsocketfactory; /* * 发送邮件 */ public class sendmailutil { private string host = ""; // smtp服务器 private string from = ""; // 发件人地址 // private string to = ""; // 收件人地址 private string[] affix = null; // 附件地址 // private string affixname = ""; // 附件名称 private string user = ""; // 用户名 private string pwd = ""; // 163的授权码 // private string subject = ""; // 邮件标题 private string[] tos = null; private properties props = null;// /** * @param user 账户名 * @param pwd 密码 * @param from 发件人地址 * @throws emailexception * @throws generalsecurityexception */ public sendmailutil(string user,string pwd,string from) throws emailexception, generalsecurityexception { this.user = user;//账户 this.pwd = pwd;//密码 this.from = from;//发件人地址 stratproperties(); } private void stratproperties() throws emailexception, generalsecurityexception { props = new properties(); if(user==null||user.length()==0) { throw new emailexception("邮箱账号不能为空"); }else { if(user.contains("@qq")) { host = "smtp.qq.com"; }else if(user.contains("@163")) { host = "smtp.163.com"; }else if(user.contains("@sina")) { host = "smtp.sina.com.cn"; }else { throw new emailexception("不支持该协议"); } // props.setproperty("mail.smtp.host", host);//设置发送邮件的邮件服务器的属性（这里使用网易的smtp服务器） // 设置邮件服务器主机名 props.setproperty("mail.host", host); } if(pwd==null||pwd.length()==0)throw new emailexception("邮箱密码不能为空"); props.setproperty("mail.transport.protocol", "smtp");// 发送邮件协议名称 props.setproperty("mail.smtp.auth", "true"); //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条） // props.put("mail.debug", "true");//设置debug模式 后台输出邮件发送的过程 mailsslsocketfactory sf = new mailsslsocketfactory();//ssl加密 sf.settrustallhosts(true); props.put("mail.smtp.ssl.enable", "true"); props.put("mail.smtp.ssl.socketfactory", sf); } public void forwardmail(message message) throws addressexception, messagingexception, emailexception, ioexception { if(tos.length==0)throw new emailexception("收件人不能为空"); session session = session.getinstance(props);//用props对象构建一个session // session.setdebug(true);//关闭控制台输出 mimemessage newmessage = new mimemessage(session);//用session为参数定义消息对象 newmessage.setsubject(message.getsubject()); newmessage.setfrom(new internetaddress(from)); newmessage.setsentdate(new date()); newmessage.setcontent(message.getcontent(), message.getcontenttype()); internetaddress[] sendto = new internetaddress[tos.length]; // 加载收件人地址 for (int i = 0; i < tos.length; i ) { sendto[i] = new internetaddress(tos[i]); } newmessage.addrecipients(message.recipienttype.to,sendto); newmessage.addrecipients(mimemessage.recipienttype.cc, internetaddress.parse(from));//设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错 transport smtp = session.gettransport("smtp"); smtp.connect(host, user, pwd); smtp.sendmessage(newmessage, newmessage.getallrecipients()); smtp.close(); } /** * @param path 需要添加附件的文件路径 * @throws emailexception */ public void addfile(string...path) throws emailexception { if(path==null||path.length==0)throw new emailexception("附件路径不能为空"); this.affix = path; } public void setto(string...to) throws emailexception { if(tostring().length()>0) { for(string t : to) { boolean emailformat = emailformat(t); if(!emailformat) { throw new emailexception(t "邮箱格式不正确"); } } tos = to; }else { throw new emailexception("收件人不能为空"); } } /** ** 验证输入的邮箱格式是否符合 * @param email * @return 是否合法 */ private boolean emailformat(string email) { boolean tag = true; final string pattern1 = "^([a-z0-9a-z] [-|\\.]?) [a-z0-9a-z]@([a-z0-9a-z] (-[a-z0-9a-z] )?\\.) [a-za-z]{2,}$"; final pattern pattern = pattern.compile(pattern1); final matcher mat = pattern.matcher(email); if (!mat.find()) { tag = false; } return tag; } /** * @param subject 标题 * @param context 文本信息 * @throws emailexception * @throws messagingexception * @throws addressexception * @throws generalsecurityexception * @throws unsupportedencodingexception */ public void send(string subject,string context) throws emailexception, addressexception, messagingexception, generalsecurityexception, unsupportedencodingexception { if(subject==null||subject.length()==0)subject=uuid.randomuuid().tostring(); // this.subject = subject;//标题 if(tos.length==0)throw new emailexception("收件人不能为空"); session session = session.getinstance(props);//用props对象构建一个session // session.setdebug(true);//关闭控制台输出 mimemessage message = new mimemessage(session);//用session为参数定义消息对象 message.setfrom(new internetaddress(from));// 加载发件人地址 internetaddress[] sendto = new internetaddress[tos.length]; // 加载收件人地址 for (int i = 0; i < tos.length; i ) { sendto[i] = new internetaddress(tos[i]); } message.addrecipients(message.recipienttype.to,sendto); message.addrecipients(mimemessage.recipienttype.cc, internetaddress.parse(from));//设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错 message.setsubject(subject);//加载标题 multipart multipart = new mimemultipart();//向multipart对象中添加邮件的各个部分内容，包括文本内容和附件 bodypart contentpart = new mimebodypart();//设置邮件的文本内容 contentpart.settext(context); multipart.addbodypart(contentpart); if(affix!=null&&affix.length>0){//添加附件 for(int i = 0 ; i

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