JAVA实用案例之邮件发送
最近有朋友问邮件怎么发送，就简单写了个demo，因为懒得找jar包，所以项目是创建的maven工程，具体的maven引用的jar如下：
<dependency><groupId>com.sun.mail</groupId>
<artifactId>javax.mail</artifactId>
<version>1.4.4</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.mail/mail -->
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4</version>
</dependency>
然后代码见下：
1、整合demo
因为QQ是https所以中间多了一段，还有就是如果自己搭的邮件服务器可以填写密码，而不用授权码了，这里我是用的QQ邮箱，所以邮箱要先开启SMTP/POP3服务
package com.allan.until;import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import com.sun.mail.util.MailSSLSocketFactory;
public class MailUtil {
private String email;// 收件人邮箱
private String code;// 激活码
public MailUtil(String email, String code) {
this.email = email;
this.code = code;
}
public void sendMail() {
// 1.创建连接对象javax.mail.Session
// 2.创建邮件对象 javax.mail.Message
// 3.发送一封激活邮件
String from = "XXX@qq.com";// 发件人电子邮箱
String host = "smtp.qq.com"; // 指定发送邮件的主机smtp.qq.com(QQ)|smtp.163.com(网易)
//Properties properties = System.getProperties();// 获取系统属性
Properties properties =new Properties();
properties.setProperty("mail.smtp.host", host);// 设置邮件服务器
properties.setProperty("mail.smtp.auth", "true");// 打开认证
try {
//QQ邮箱需要下面这段代码，163邮箱不需要
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
properties.put("mail.smtp.ssl.enable", "true");
properties.put("mail.smtp.ssl.socketFactory", sf);
// 1.获取默认session对象
Session session = Session.getDefaultInstance(properties, new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("XXX@qq.com", "XXX"); // 发件人邮箱账号、授权码
}
});
// 2.创建邮件对象
Message message = new MimeMessage(session);
// 2.1设置发件人
message.setFrom(new InternetAddress(from));
// 2.2设置接收人
message.addRecipient(Message.RecipientType.TO, new InternetAddress(email));
// 2.3设置邮件主题
message.setSubject("账号激活");
// 2.4设置邮件内容
String content = "验证码："+ code;
message.setContent(content, "text/html;charset=UTF-8");
// 3.发送邮件
Transport.send(message);
System.out.println("邮件成功发送!");
} catch (Exception e) {
e.printStackTrace();
}
}
}
附件版：
package com.aitou.operation.utils;import java.io.InputStream;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
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;
import javax.mail.util.ByteArrayDataSource;
import com.sun.mail.util.MailSSLSocketFactory;
public class MailUtil {
/**
*
* 方法名: sendMail
* 描述: 发送邮件
* 创建人: zhangzhuo
* 参数: @param subject
* 参数: @param toMail
* 参数: @param content
* 参数: @param files
* 参数: @return
* 返回类型: boolean
*/
public static boolean sendMail(String fromMail, String password, String subject, String toMail, String content,
List<InputStream> listIs, List<String> listName) {
boolean isFlag = false;
try {
String smtpFromMail = fromMail; //账号
String pwd = password; //密码
String host = "smtp.qq.com"; //端口
Properties props = new Properties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.auth", "true");
//QQ邮箱
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
props.put("mail.smtp.ssl.enable", "true");
props.put("mail.smtp.ssl.socketFactory", sf);
Session session = Session.getDefaultInstance(props);
session.setDebug(false);
MimeMessage message = new MimeMessage(session);
try {
message.setFrom(new InternetAddress(smtpFromMail));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(toMail));
message.setSubject(subject);
message.addHeader("charset", "UTF-8");
/*添加正文内容*/
Multipart multipart = new MimeMultipart();
BodyPart contentPart = new MimeBodyPart();
contentPart.setText(content);
//contentPart.setHeader("Content-Type", "text/html; charset=UTF-8");
multipart.addBodyPart(contentPart);
/*添加附件*/
for (int i = 0; i < listIs.size(); i++) {
MimeBodyPart fileBody = new MimeBodyPart();
DataSource source = new ByteArrayDataSource(listIs.get(i), "application/msexcel");
fileBody.setDataHandler(new DataHandler(source));
String fileName = listName.get(i);
// 中文乱码问题
fileBody.setFileName(MimeUtility.encodeText(fileName));
multipart.addBodyPart(fileBody);
}
message.setContent(multipart);
message.setSentDate(new Date());
message.saveChanges();
Transport transport = session.getTransport("smtp");
transport.connect(host, smtpFromMail, pwd);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
isFlag = true;
} catch (Exception e) {
e.printStackTrace();
isFlag = false;
}
} catch (Exception e) {
e.printStackTrace();
}
return isFlag;
}
}
2、spring整合javamail
工具提取：
public class MailUtil { /**
* 发送电子邮件
* @param addr 收件人地址
* @param subject 主题
* @param text 内容
* @throws MessagingException
*/
public static void sendMail(String addr,String subject,String text) throws MessagingException{
Properties props=new Properties();
props.put("mail.smtp.host","smtp.sina.com");
props.put("mail.smtp.auth","true");
Session session=Session.getInstance(props);
//构造信息体
MimeMessage message =new MimeMessage(session);
//发件地址
Address address = new InternetAddress("wwwitcastcn@sina.com");
message.setFrom(address);
//收件地址
Address toAddress = new InternetAddress(addr);
message.setRecipient(MimeMessage.RecipientType.TO, toAddress);
//主题
message.setSubject(subject);
//正文
message.setText(text);
message.saveChanges();
Transport transport = session.getTransport("smtp");
transport.connect("smtp.sina.com", "wwwitcastcn@sina.com", "itcast"); //发送
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}
}
Spring对javamail的支持：
Spring邮件抽象层的主要包为org.springframework.mail。它包括了发送电子邮件的主要接口MailSender，和其对象SimpleMailMessage，它封装了简单邮件的属性如from, to,cc, subject,text。 包里还包含一棵以MailException为根的checked Exception继承树，它们提供了对底层邮件系统异常的高级别抽象。 要获得关于邮件异常层次的更丰富的信息。
为了使用JavaMail中的一些特色, 比如MIME类型的信件, spring提供了MailSender的一个子接口, 即org.springframework.mail.javamail.JavaMailSender。Spring还提供了一个回调接口org.springframework.mail.javamail.MimeMessagePreparator, 用于准备JavaMail的MIME信件。
这里简单的介绍了如何使用spring发送各种形式的邮件以及配置。
1、在src目录下建立mail.properties文件里边包含一下内容
mail.host=smtp.qq.com
mail.username=你的邮箱名
mail.password=你的邮箱密码
mail.from=发送方的邮箱
2、使用spring配置
<?xml version="1.0" encoding="UTF-8"?><beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<!-- 加载Properties文件 -->
<beanid="configurer"class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<propertyname="locations">
<list>
<value>classpath:mail.properties</value>
</list>
</property>
</bean>
<beanid="mailMessage"class="org.springframework.mail.SimpleMailMessage">
<propertyname="from">
<value>${mail.from}</value>
</property>
<!-- 查看SimpleMailMessage源码还可以注入标题,内容等 -->
</bean>
<!-- 申明JavaMailSenderImpl对象 -->
<beanid="mailSender"class="org.springframework.mail.javamail.JavaMailSenderImpl">
<propertyname="defaultEncoding"value="UTF-8"/>
<propertyname="host"value="${mail.host}"/>
<propertyname="username"value="${mail.username}"/>
<propertyname="password"value="${mail.password}"/>
<propertyname="javaMailProperties">
<props>
<!-- 设置认证开关 -->
<propkey="mail.smtp.auth">true</prop>
<!-- 启动调试开关 -->
<propkey="mail.debug">true</prop>
<!-- 设置发送延时 -->
<propkey="mail.smtp.timeout">0</prop>
</props>
</property>
</bean>
</beans>
3、发送简单邮件
importjavax.mail.MessagingException;importorg.springframework.context.ApplicationContext;
importorg.springframework.context.support.ClassPathXmlApplicationContext;
importorg.springframework.mail.MailSender;
importorg.springframework.mail.SimpleMailMessage;
public class SingleMailSend {
static ApplicationContext actx = new ClassPathXmlApplicationContext("applicationContext.xml");
static MailSender sender = (MailSender) actx.getBean("mailSender");
static SimpleMailMessage mailMessage = (SimpleMailMessage) actx.getBean("mailMessage");
public static void main(String[] args) throws MessagingException {
mailMessage.setSubject("??");
mailMessage.setText("这个是一个通过Spring框架来发送邮件的小程序");
mailMessage.setTo("XXX@qq.com");
sender.send(mailMessage);
}
}
4、发送带有图片的邮件，以嵌入HTML的方式
importjava.io.File;
importjavax.mail.MessagingException;
importjavax.mail.internet.MimeMessage;
importorg.springframework.context.ApplicationContext;
importorg.springframework.context.support.ClassPathXmlApplicationContext;
importorg.springframework.core.io.FileSystemResource;
importorg.springframework.mail.javamail.JavaMailSenderImpl;
importorg.springframework.mail.javamail.MimeMessageHelper;
public class SpringAttachedImageMail {
public static voidmain(String[] args) throws MessagingException {
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
JavaMailSenderImpl sender = (JavaMailSenderImpl) ctx.getBean("mailSender");
MimeMessage mailMessage = sender.createMimeMessage();
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true);
messageHelper.setFrom("9197****1@qq.com");
messageHelper.setTo("9197****1@qq.com");
messageHelper.setSubject("测试邮件中嵌套图片!！");// true 表示启动HTML格式的邮件
messageHelper.setText("<html><head></head><body><h1>hello!!spring image html mail</h1>"
+"<a href=http://www.baidu.com>baidu</a>"
+ "<img src=cid:image/></body></html>", true);
FileSystemResource img = new FileSystemResource(new File("单.png"));
messageHelper.addInline("image", img);//跟cid一致
sender.send(mailMessage);
System.out.println("邮件发送成功...");
}
}
5、发送带附件的邮件
importjava.io.File;
importjavax.mail.MessagingException;
importjavax.mail.internet.MimeMessage;
importorg.springframework.context.ApplicationContext;
importorg.springframework.context.support.ClassPathXmlApplicationContext;
importorg.springframework.core.io.FileSystemResource;
importorg.springframework.mail.javamail.JavaMailSenderImpl;
importorg.springframework.mail.javamail.MimeMessageHelper;
public class SpringAttachedImageMail {
public static voidmain(String[] args) throws MessagingException {
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
JavaMailSenderImpl sender = (JavaMailSenderImpl) ctx.getBean("mailSender");
MimeMessage mailMessage = sender.createMimeMessage();
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true);
messageHelper.setFrom("9197****1@qq.com");
messageHelper.setTo("9197****1@qq.com");
messageHelper.setSubject("测试邮件中嵌套图片!！");// true 表示启动HTML格式的邮件
messageHelper.setText("<html><head></head><body><h1>hello!!spring image html mail</h1>"
+"<a href=http://www.baidu.com>baidu</a>"
+ "<img src=cid:image/></body></html>", true);
FileSystemResource img = new FileSystemResource(new File("单.png"));
messageHelper.addAttachment("单.png", file);//添加到附件
sender.send(mailMessage);
System.out.println("邮件发送成功...");
}
}
个人备份：
import java.io.InputStream;import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
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;
import javax.mail.util.ByteArrayDataSource;
import com.sun.mail.util.MailSSLSocketFactory;
public class MailUtil {
/**
*
* 方法名: sendMail
* 描述: 发送邮件
* 创建人: zhangzhuo
* 参数: @param subject
* 参数: @param toMail
* 参数: @param content
* 参数: @param files
* 参数: @return
* 返回类型: boolean
* @throws BaseException
*/
public static boolean sendMail(String fromMail, String password, String subject, String toMail, String content,
List<InputStream> listIs, List<String> listName) throws Exception {
boolean isFlag = false;
String smtpFromMail = fromMail;//账号
String pwd = password; //密码
String host = "smtp.qq.com"; //端口
Properties props = new Properties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.auth", "true");
//QQ邮箱
MailSSLSocketFactory sf = new MailSSLSocketFactory();
sf.setTrustAllHosts(true);
props.put("mail.smtp.ssl.enable", "true");
props.put("mail.smtp.ssl.socketFactory", sf);
Session session = Session.getDefaultInstance(props);
session.setDebug(false);
MimeMessage message = new MimeMessage(session);
try {
message.setFrom(new InternetAddress(smtpFromMail));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(toMail));
message.setSubject(subject);
message.addHeader("charset", "UTF-8");
/*添加正文内容*/
Multipart multipart = new MimeMultipart();
BodyPart contentPart = new MimeBodyPart();
contentPart.setText(content);
//contentPart.setHeader("Content-Type", "text/html; charset=UTF-8");
multipart.addBodyPart(contentPart);
/*添加附件*/
for (int i = 0; i < listIs.size(); i++) {
MimeBodyPart fileBody = new MimeBodyPart();
DataSource source = new ByteArrayDataSource(listIs.get(i), "application/msexcel");
fileBody.setDataHandler(new DataHandler(source));
String fileName = listName.get(i);
// 中文乱码问题
fileBody.setFileName(MimeUtility.encodeText(fileName));
multipart.addBodyPart(fileBody);
}
message.setContent(multipart);
message.setSentDate(new Date());
message.saveChanges();
Transport transport = session.getTransport("smtp");
transport.connect(host, smtpFromMail, pwd);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
isFlag = true;
} catch (Exception e) {
e.printStackTrace();
isFlag = false;
}
return isFlag;
}
}
以上是 JAVA实用案例之邮件发送 的全部内容， 来源链接： utcz.com/z/390980.html
