JavaMail 发送邮件系列(一)：发送基本邮件

使用JavaMail API发送邮件，大概分为三个类：MyAuthenticator---密码认证器，MailSendInfo--邮件发送消息集合，MailSendUtils--邮件发送消息注入执行

Maven依赖

<dependency >    <groupId > javax.mail </ groupId >    <artifactId > mail </ artifactId >    <version > 1.4.5 </ version ></dependency ><dependency >    <groupId > com.sun.mail </ groupId >    <artifactId > javax.mail </ artifactId >    <version > 1.5.4 </ version ></dependency >

MyAuthenticator

import javax.mail.Authenticator;import javax.mail.PasswordAuthentication;public class MyAuthenticator extends Authenticator {private String userName = null;private 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);}}

MailSendInfo

import java.util.Properties;public class MailSenderInfo {    // 发送邮件的服务器的IP和端口    private String mailServerHost;    private String mailServerPort = "25";    // 邮件发送者的地址    private String fromAddress;    // 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;    // 邮件接收者的地址    private String[] toAddress;    /**     * 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[] getToAddress() {        return toAddress;    }    public void setToAddress(String[] toAddress) {        this.toAddress = toAddress;    }    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 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 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;    }}

MailSendUtils

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;public class MailSendUtils {    private MailSenderInfo mailInfo = new MailSenderInfo();    public MailSendUtils(String subject, String message,String toAddress) {        mailInfo.setMailServerHost("smtp.163.com");        mailInfo.setMailServerPort("25");        mailInfo.setValidate(true);        mailInfo.setUserName("[e-mail]");        mailInfo.setPassword("willsmith228");        mailInfo.setFromAddress("[e-mail]");        mailInfo.setToAddress(new String[]{toAddress});        mailInfo.setSubject(subject);        mailInfo.setContent(message);    }    /**     * 以TEXT格式发送邮件     *      */    public boolean sendTextMail() {        // 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            String[] ToAddresses = mailInfo.getToAddress();            Address[] addressList = new InternetAddress[ToAddresses.length];            for (int i = 0; i < ToAddresses.length; i++) {                addressList[i] = new InternetAddress(ToAddresses[i]);            }            // Message.RecipientType.TO属性表示接收者的类型为TO            mailMessage.setRecipients(Message.RecipientType.TO, addressList);            // 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     *      */    public boolean sendHtmlMail() {        // 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            String[] ToAddresses = mailInfo.getToAddress();            Address[] addressList = new InternetAddress[ToAddresses.length];            for (int i = 0; i < ToAddresses.length; i++) {                addressList[i] = new InternetAddress(ToAddresses[i]);            }            // Message.RecipientType.TO属性表示接收者的类型为TO            mailMessage.setRecipients(Message.RecipientType.TO, addressList);            // 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;    }}

MailTest

public class MailTest {    public static void main(String[] args) {        MailSendUtils sms = new MailSendUtils("this is title", "this is content", "[e-mail]");        System.out.println(sms.sendTextMail());    }}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.cnooc.commons</groupId><artifactId>CPURecordMonitor</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>CPURecordMonitor</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.7</version><scope>test</scope></dependency>                <dependency >            <groupId >javax.mail </groupId >            <artifactId >mail </artifactId >            <version >1.4.5 </version >        </dependency >        <dependency >            <groupId >com.sun.mail </groupId >            <artifactId >javax.mail </artifactId >            <version >1.5.4 </version >        </dependency >    </dependencies >    <build >        <finalName >CPURecordMonitor </finalName >        <plugins >            <plugin >                <groupId >org.apache.maven.plugins </groupId >                <artifactId >maven-compiler-plugin</artifactId >                <configuration >                    <source >1.7 </source >                    <target >1.7 </target >                </configuration >            </plugin >        </plugins >    </build ></project>

中途遇到两个错误

java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger

java.lang.NoClassDefFoundError: javax/mail/MessagingException

解决方案参考：
http://blog.csdn.net/u013361445/article/details/49663329

Demon下载：http://download.csdn.net/detail/u013361445/9246365

建议下载完毕后自己敲一遍代码，有助于理解。