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发邮件java代码 java代码发送邮件
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java 代码发邮件怎么添加附件
实现java发送邮件的过程大体有以下几步:
准备一个properties文件,该文件中存放SMTP服务器地址等参数。
利用properties创建一个Session对象
利用Session创建Message对象,然后设置邮件主题和正文
利用Transport对象发送邮件
需要的jar有2个:activation.jar和mail.jar发送附件,需要用到Multipart对象。
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
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.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
public class JavaMailWithAttachment {
private MimeMessage message;
private Session session;
private Transport transport;
private String mailHost = "";
private String sender_username = "";
private String sender_password = "";
private Properties properties = new Properties();
/*
* 初始化方法
*/
public JavaMailWithAttachment(boolean debug) {
InputStream in = JavaMailWithAttachment.class.getResourceAsStream("MailServer.properties");
try {
properties.load(in);
this.mailHost = properties.getProperty("mail.smtp.host");
this.sender_username = properties.getProperty("mail.sender.username");
this.sender_password = properties.getProperty("mail.sender.password");
} catch (IOException e) {
e.printStackTrace();
}
session = Session.getInstance(properties);
session.setDebug(debug);// 开启后有调试信息
message = new MimeMessage(session);
}
/**
* 发送邮件
*
* @param subject
* 邮件主题
* @param sendHtml
* 邮件内容
* @param receiveUser
* 收件人地址
* @param attachment
* 附件
*/
public void doSendHtmlEmail(String subject, String sendHtml, String receiveUser, File attachment) {
try {
// 发件人
InternetAddress from = new InternetAddress(sender_username);
message.setFrom(from);
// 收件人
InternetAddress to = new InternetAddress(receiveUser);
message.setRecipient(Message.RecipientType.TO, to);
// 邮件主题
message.setSubject(subject);
// 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
Multipart multipart = new MimeMultipart();
// 添加邮件正文
BodyPart contentPart = new MimeBodyPart();
contentPart.setContent(sendHtml, "text/html;charset=UTF-8");
multipart.addBodyPart(contentPart);
// 添加附件的内容
if (attachment != null) {
BodyPart attachmentBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(attachment);
attachmentBodyPart.setDataHandler(new DataHandler(source));
// 网上流传的解决文件名乱码的方法,其实用MimeUtility.encodeWord就可以很方便的搞定
// 这里很重要,通过下面的Base64编码的转换可以保证你的中文附件标题名在发送时不会变成乱码
//sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
//messageBodyPart.setFileName("=?GBK?B?" + enc.encode(attachment.getName().getBytes()) + "?=");
//MimeUtility.encodeWord可以避免文件名乱码
attachmentBodyPart.setFileName(MimeUtility.encodeWord(attachment.getName()));
multipart.addBodyPart(attachmentBodyPart);
}
// 将multipart对象放到message中
message.setContent(multipart);
// 保存邮件
message.saveChanges();
transport = session.getTransport("smtp");
// smtp验证,就是你用来发邮件的邮箱用户名密码
transport.connect(mailHost, sender_username, sender_password);
// 发送
transport.sendMessage(message, message.getAllRecipients());
System.out.println("send success!");
} catch (Exception e) {
e.printStackTrace();
} finally {
if (transport != null) {
try {
transport.close();
} catch (MessagingException e) {
e.printStackTrace();
}
}
}
}
public static void main(String[] args) {
JavaMailWithAttachment se = new JavaMailWithAttachment(true);
File affix = new File("c:\\测试-test.txt");
se.doSendHtmlEmail("邮件主题", "邮件内容", "xxx@XXX.com", affix);//
}
}
java 怎么实现发送邮件例子
第一个类:MailSenderInfo.java
[java] view plain copy
package com.util.mail;
/**
* 发送邮件需要使用发邮件java代码的基本信息
*author by wangfun
小说520
*/
import java.util.Properties;
public class MailSenderInfo {
// 发送邮件发邮件java代码的服务器的IP和端口
private String mailServerHost;
private String mailServerPort = "25";
// 邮件发送者的地址
private String fromAddress;
// 邮件接收者的地址
private String toAddress;
// 登陆邮件发送服务器的用户名和密码
private String userName;
private String password;
// 是否需要身份验证
private boolean validate = false;
// 邮件主题
private String subject;
// 邮件的文本内容
private String content;
// 邮件附件的文件名
private String[] attachFileNames;
/**
* 获得邮件会话属性
*/
public Properties getProperties(){
Properties p = new Properties();
p.put("mail.smtp.host", this.mailServerHost);
p.put("mail.smtp.port", this.mailServerPort);
p.put("mail.smtp.auth", validate ? "true" : "false");
return p;
}
public String getMailServerHost() {
return mailServerHost;
}
public void setMailServerHost(String mailServerHost) {
this.mailServerHost = mailServerHost;
}
public String getMailServerPort() {
return mailServerPort;
}
public void setMailServerPort(String mailServerPort) {
this.mailServerPort = mailServerPort;
}
public boolean isValidate() {
return validate;
}
public void setValidate(boolean validate) {
this.validate = validate;
}
public String[] getAttachFileNames() {
return attachFileNames;
}
public void setAttachFileNames(String[] fileNames) {
this.attachFileNames = fileNames;
}
public String getFromAddress() {
return fromAddress;
}
public void setFromAddress(String fromAddress) {
this.fromAddress = fromAddress;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getToAddress() {
return toAddress;
}
public void setToAddress(String toAddress) {
this.toAddress = toAddress;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public String getContent() {
return content;
}
public void setContent(String textContent) {
this.content = textContent;
}
}
第二个类:SimpleMailSender.java
[java] view plain copy
package com.util.mail;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
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.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
/**
* 简单邮件(不带附件的邮件)发送器
BT下载
*/
public class SimpleMailSender {
/**
* 以文本格式发送邮件
* @param mailInfo 待发送的邮件的信息
*/
public boolean sendTextMail(MailSenderInfo mailInfo) {
// 判断是否需要身份认证
MyAuthenticator authenticator = null;
Properties pro = mailInfo.getProperties();
if (mailInfo.isValidate()) {
// 如果需要身份认证,则创建一个密码验证器
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根据邮件会话属性和密码验证器构造一个发送邮件的session
Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
try {
// 根据session创建一个邮件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
Address from = new InternetAddress(mailInfo.getFromAddress());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址,并设置到邮件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 设置邮件消息的主题
mailMessage.setSubject(mailInfo.getSubject());
// 设置邮件消息发送的时间
mailMessage.setSentDate(new Date());
// 设置邮件消息的主要内容
String mailContent = mailInfo.getContent();
mailMessage.setText(mailContent);
// 发送邮件
Transport.send(mailMessage);
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}
/**
* 以HTML格式发送邮件
* @param mailInfo 待发送的邮件信息
*/
public static boolean sendHtmlMail(MailSenderInfo mailInfo){
// 判断是否需要身份认证
MyAuthenticator authenticator = null;
Properties pro = mailInfo.getProperties();
//如果需要身份认证,则创建一个密码验证器
if (mailInfo.isValidate()) {
authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
}
// 根据邮件会话属性和密码验证器构造一个发送邮件的session
Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
try {
// 根据session创建一个邮件消息
Message mailMessage = new MimeMessage(sendMailSession);
// 创建邮件发送者地址
Address from = new InternetAddress(mailInfo.getFromAddress());
// 设置邮件消息的发送者
mailMessage.setFrom(from);
// 创建邮件的接收者地址,并设置到邮件消息中
Address to = new InternetAddress(mailInfo.getToAddress());
// Message.RecipientType.TO属性表示接收者的类型为TO
mailMessage.setRecipient(Message.RecipientType.TO,to);
// 设置邮件消息的主题
mailMessage.setSubject(mailInfo.getSubject());
// 设置邮件消息发送的时间
mailMessage.setSentDate(new Date());
// MiniMultipart类是一个容器类,包含MimeBodyPart类型的对象
Multipart mainPart = new MimeMultipart();
// 创建一个包含HTML内容的MimeBodyPart
BodyPart html = new MimeBodyPart();
// 设置HTML内容
html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");
mainPart.addBodyPart(html);
// 将MiniMultipart对象设置为邮件内容
mailMessage.setContent(mainPart);
// 发送邮件
Transport.send(mailMessage);
return true;
} catch (MessagingException ex) {
ex.printStackTrace();
}
return false;
}
}
第三个类:MyAuthenticator.java
[java] view plain copy
package com.util.mail;
import javax.mail.*;
public class MyAuthenticator extends Authenticator{
String userName=null;
String password=null;
public MyAuthenticator(){
}
public MyAuthenticator(String username, String password) {
this.userName = username;
this.password = password;
}
protected PasswordAuthentication getPasswordAuthentication(){
return new PasswordAuthentication(userName, password);
}
}
下面给出使用上面三个类的代码:
[java] view plain copy
public static void main(String[] args){
//这个类主要是设置邮件
MailSenderInfo mailInfo = new MailSenderInfo();
mailInfo.setMailServerHost("smtp.163.com");
mailInfo.setMailServerPort("25");
mailInfo.setValidate(true);
mailInfo.setUserName("han2000lei@163.com");
mailInfo.setPassword("**********");//您的邮箱密码
mailInfo.setFromAddress("han2000lei@163.com");
mailInfo.setToAddress("han2000lei@163.com");
mailInfo.setSubject("设置邮箱标题 如 中国桂花网");
mailInfo.setContent("设置邮箱内容 如 中国桂花网 是中国最大桂花网站==");
//这个类主要来发送邮件
SimpleMailSender sms = new SimpleMailSender();
sms.sendTextMail(mailInfo);//发送文体格式
sms.sendHtmlMail(mailInfo);//发送html格式
}
最后,给出朋友们几个注意的地方:
1、使用此代码发邮件java代码你可以完成发邮件java代码你的javamail的邮件发送功能。三个类缺一不可。
2、这三个类我打包是用的com.util.mail包,如果不喜欢,你可以自己改,但三个类文件必须在同一个包中
3、不要使用你刚刚注册过的邮箱在程序中发邮件,如果你的163邮箱是刚注册不久,那你就不要使用“smtp.163.com”。因为你发不出去。刚注册的邮箱是不会给你这种权限的,也就是你不能通过验证。要使用你经常用的邮箱,而且时间比较长的。
4、另一个问题就是mailInfo.setMailServerHost("smtp.163.com");与mailInfo.setFromAddress("han2000lei@163.com");这两句话。即如果你使用163smtp服务器,那么发送邮件地址就必须用163的邮箱,如果不的话,是不会发送成功的。
5、关于javamail验证错误的问题,网上的解释有很多,但我看见的只有一个。就是我的第三个类。你只要复制全了代码,我想是不会有问题的。
求java实现邮件发送的源代码
import java.util.*;
import javax.mail.*;import javax.mail.internet.*;
public class JMail {
public void SendMail(String Topic,String Content){ Properties props=new Properties(); props.put("mail.smtp.host","smtp.163.com"); props.put("mail.smtp.auth","true"); Session s=Session.getInstance(props); s.setDebug(false); MimeMessage message=new MimeMessage(s); MimeMultipart mp=new MimeMultipart(); BodyPart body = new MimeBodyPart(); InternetAddress from; InternetAddress to; try{ from=new InternetAddress("发件人邮箱"); message.setFrom(from); to = new InternetAddress("收件人邮箱"); message.setRecipient(Message.RecipientType.TO,to); message.setSubject(Topic,"utf-8"); body.setContent(Content, "text/html;charset=utf-8"); mp.addBodyPart(body); message.setContent(mp); message.setSentDate(new Date()); message.saveChanges(); Transport transport=s.getTransport("smtp"); transport.connect("smtp.163.com(邮件服务商,这是163的)","发件邮箱","发件邮箱密码"); transport.sendMessage(message,message.getAllRecipients()); transport.close(); } catch(AddressException e){ e.printStackTrace(); } catch(MessagingException e){ e.printStackTrace(); } }}
怎样用java实现邮件的发送?
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.SocketException;
import java.rmi.UnknownHostException;
import java.util.StringTokenizer;
import sun.misc.BASE64Encoder;
public class Sender {
//private boolean debug = true;
BASE64Encoder encode=new BASE64Encoder();//用于加密后发送用户名和密码
static int dk=25;
private Socket socket;
public Sender(String server, int port) throws UnknownHostException,
IOException {
try {
socket = new Socket(server, dk);
} catch (SocketException e) {
System.out.println(e.getMessage());
} catch (Exception e) {
e.printStackTrace();
} finally {
//System.out.println("已经建立连接!");
}
}
// 注册到邮件服务器
public void helo(String server, BufferedReader in, BufferedWriter out)
throws IOException {
int result;
result = getResult(in);
// 连接上邮件服务后,服务器给出220应答
if (result != 220) {
throw new IOException("连接服务器失败");
}
result = sendServer("HELO " + server, in, out);
// HELO命令成功后返回250
if (result != 250) {
throw new IOException("注册邮件服务器失败!");
}
}
private int sendServer(String str, BufferedReader in, BufferedWriter out)
throws IOException {
out.write(str);
out.newLine();
out.flush();
/*
if (debug) {
System.out.println("已发送命令:" + str);
}
*/
return getResult(in);
}
public int getResult(BufferedReader in) {
String line = "";
try {
line = in.readLine();
/*
if (debug) {
System.out.println("服务器返回状态:" + line);
}
*/
} catch (Exception e) {
e.printStackTrace();
}
// 从服务器返回消息中读出状态码,将其转换成整数返回
StringTokenizer st = new StringTokenizer(line, " ");
return Integer.parseInt(st.nextToken());
}
public void authLogin(MailMessage message, BufferedReader in,
BufferedWriter out) throws IOException {
int result;
result = sendServer("AUTH LOGIN", in, out);
if (result != 334) {
throw new IOException("用户验证失败!");
}
result=sendServer(encode.encode(message.getUser().getBytes()),in,out);
//System.out.println("用户名: "+encode.encode(message.getUser().getBytes()));
if (result != 334) {
throw new IOException("用户名错误!");
}
result=sendServer(encode.encode(message.getPassword().getBytes()),in,out);
//result=sendServer(message.getPassword(),in,out);
//System.out.println("密码: "+encode.encode(message.getPassword().getBytes()));
if (result != 235) {
throw new IOException("验证失败!");
}
}
// 开始发送消息,邮件源地址
public void mailfrom(String source, BufferedReader in, BufferedWriter out)
throws IOException {
int result;
result = sendServer("MAIL FROM:" + source + "", in, out);
if (result != 250) {
throw new IOException("指定源地址错误");
}
}
// 设置邮件收件人
public void rcpt(String touchman, BufferedReader in, BufferedWriter out)
throws IOException {
int result;
result = sendServer("RCPT TO:" + touchman + "", in, out);
if (result != 250) {
throw new IOException("指定目的地址错误!");
}
}
// 邮件体
public void data(String from, String to, String subject, String content,
BufferedReader in, BufferedWriter out) throws IOException {
int result;
result = sendServer("DATA", in, out);
// 输入DATA回车后,若收到354应答后,继续输入邮件内容
if (result != 354) {
throw new IOException("不能发送数据");
}
out.write("From: " + from);
out.newLine();
out.write("To: " + to);
out.newLine();
out.write("Subject: " + subject);
out.newLine();
out.newLine();
out.write(content);
out.newLine();
// 句号加回车结束邮件内容输入
result = sendServer(".", in, out);
//System.out.println(result);
if (result != 250) {
throw new IOException("发送数据错误");
}
}
// 退出
public void quit(BufferedReader in, BufferedWriter out) throws IOException {
int result;
result = sendServer("QUIT", in, out);
if (result != 221) {
throw new IOException("未能正确退出");
}
}
// 发送邮件主程序
public boolean sendMail(MailMessage message, String server) {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
socket.getInputStream()));
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(
socket.getOutputStream()));
helo(server, in, out);// HELO命令
authLogin(message, in, out);// AUTH LOGIN命令
mailfrom(message.getFrom(), in, out);// MAIL FROM
rcpt(message.getTo(), in, out);// RCPT
data(message.getDatafrom(), message.getDatato(),
message.getSubject(), message.getContent(), in, out);// DATA
quit(in, out);// QUIT
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
}
再写一个MailMessage.java,set/get方法即可。
如何使用Java发送qq邮件
1新建Java项目
2然后再项目下新建一个lib文件夹,复制需要的那个两个jar包到lib下
3选择 activation.jar和mail.jar,右键添加Build path
4用QQ给QQ发送邮件,发送方得开启第三方登录,也就是授权登录,需要开始POP3和SMTP,还有点击生成授权码,下面是操作截图
5编写Java代码
6运行,最后显示 250 Mail OK即发送成功
7接收方的QQ会收到邮件
Java发送邮件
JAVA邮件发送的大致过程是这样的的:
1、构建一个继承自javax.mail.Authenticator的具体类,并重写里面的getPasswordAuthentication()方法。此类是用作登录校验的,以确保你对该邮箱有发送邮件的权利。
2、构建一个properties文件,该文件中存放SMTP服务器地址等参数。
3、通过构建的properties文件和javax.mail.Authenticator具体类来创建一个javax.mail.Session。Session的创建,就相当于登录邮箱一样。剩下的自然就是新建邮件。
4、构建邮件内容,一般是javax.mail.internet.MimeMessage对象,并指定发送人,收信人,主题,内容等等。
5、使用javax.mail.Transport工具类发送邮件。
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