邮件工具类

工具类所需依赖：

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-email</artifactId>
    <version>1.5</version>
</dependency>

工具类方法结构：

简单邮件方法

sendSimpleEmail(String, String, String, String, String, String, String)

sendSimpleEmail(String, String, String, String, String, String[], String)

sendSimpleEmailAndCc(String, String, String, String, String, String, String, List<String>)

sendSimpleEmailAndCc(String, String, String, String, String, String[], String, List<String>)

附件邮件方法

sendMultiPartEmail(String, String, String, String, String, String, String, String[])

sendMultiPartEmail(String, String, String, String, String, String[], String, String[])

sendMultiPartEmailAndCc(String, String, String, String, String, String, String, String[], List<String>)

sendMultiPartEmailAndCc(String, String, String, String, String, String[], String, String[], List<String>)

Html邮件方法

sendHtmlEmail(String, String, String, String, String, String, String)

sendHtmlEmail(String, String, String, String, String, String[], String)

sendHtmlEmailAndCc(String, String, String, String, String, String, String, List<String>)

sendHtmlEmailAndCc(String, String, String, String, String, String[], String, List<String>)

工具代码：

import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;

import org.apache.commons.mail.EmailAttachment;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.HtmlEmail;
import org.apache.commons.mail.MultiPartEmail;
import org.apache.commons.mail.SimpleEmail;

/**
 * Description:邮件工具类
 * Copyright:Copyright(c) 2018
 * @author imok
 * @version 2018年7月24日
 */
public class MailHelper
{
    private static final SimpleEmail email = new SimpleEmail();
    private static final HtmlEmail htmlEmail = new HtmlEmail();
    private static final MultiPartEmail multiPartEmail = new MultiPartEmail();
    
    private static void setEmailBasicProperty(String host, String username, String password, String subject, String contents,
             String fromEmailAddress) throws EmailException{
        email.setHostName(host);
        email.setAuthentication(username, password);
        email.setFrom(fromEmailAddress, fromEmailAddress);
        email.setSubject(subject);
        email.setContent((Object)contents, "text/plain;charset=GBK");
    }
    
    private static void setHtmlEmailBasicProperty(String host, String username, String password, String subject, String contents, String fromEmailAddress) throws EmailException{
        htmlEmail.setHostName(host);
        htmlEmail.setAuthentication(username, password);
        htmlEmail.setFrom(fromEmailAddress, fromEmailAddress);
        htmlEmail.setSubject(subject);
        htmlEmail.setHtmlMsg(CharHelper.GBKto8859(contents));
    }
    
    private static void setMultiPartEmailBasicProperty(String host, String username, String password, String subject,
            String contents, String fromEmailAddress) throws EmailException{
        multiPartEmail.setHostName(host);
        multiPartEmail.setAuthentication(username, password);
        multiPartEmail.setFrom(fromEmailAddress, fromEmailAddress);
        multiPartEmail.setSubject(subject);
        multiPartEmail.setMsg(contents);   //注意这个不要使用setContent这个方法  setMsg不会出现乱码
    }
    
    /**
     * 简单的发邮件方式    邮件内容只有标题和邮件内容  支持单个个用户发送
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 发件人的邮件地址
     * @throws EmailException
     */
    public static void sendSimpleEmail(String host, String username, String password, String subject, String contents,
                                       String toEmailAddress, String fromEmailAddress) throws EmailException
    {
        setEmailBasicProperty(host, username, password, subject, contents, fromEmailAddress);
        email.addTo(toEmailAddress);
        email.send();     
    }
 

    /**
     * 简单的发邮件方式    邮件内容只有标题和邮件内容  支持单个个用户发送并支持抄送
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 发件人的邮件地址
     * @param ccAddresses             抄送人的邮件地址
     * @throws EmailException
     */
    public static void sendSimpleEmailAndCc(String host, String username, String password, String subject, String contents,
            String toEmailAddress, String fromEmailAddress,List<String> ccAddresses) throws EmailException, AddressException{
        
        if(ccAddresses != null){
            List<InternetAddress> ccAddressesList = new ArrayList<InternetAddress>();
            for(String cc : ccAddresses){
                ccAddressesList.add(new InternetAddress(cc));
            }
            email.setCc(ccAddressesList);
        }
        
        sendSimpleEmail(host, username, password, subject, contents, toEmailAddress, fromEmailAddress);
        
    }

    /**
     * 简单的发邮件方式    邮件内容只有标题和邮件内容  支持多个用户批量发送
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 发件人的邮件地址
     * @throws EmailException
     */
    public static void sendSimpleEmail(String host, String username, String password, String subject, String contents, String [] toEmailAddress, String fromEmailAddress) throws EmailException
    {
        setEmailBasicProperty(host, username, password, subject, contents, fromEmailAddress);
        //发送给多个人
        for (int i = 0; i < toEmailAddress.length; i++)
        {
            email.addTo(toEmailAddress[i], toEmailAddress[i]);
        }
        email.send();
    }
    
    /**
     * 简单的发邮件方式    邮件内容只有标题和邮件内容  支持多个用户批量发送
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 发件人的邮件地址
     * @param ccAddresses      抄送人的邮件地址
     * @throws EmailException
     * @throws AddressException 
     */
    public static void sendSimpleEmailAndCc(String host, String username, String password, String subject, String contents, String [] toEmailAddress, String fromEmailAddress,List<String> ccAddresses) throws EmailException, AddressException
    {
        
        sendSimpleEmail(host, username, password, subject, contents, toEmailAddress, fromEmailAddress);
        
        //设置抄送人
        if(ccAddresses != null){
            List<InternetAddress> ccAddressesList = new ArrayList<InternetAddress>();
            for(String cc : ccAddresses){
                ccAddressesList.add(new InternetAddress(cc));
            }
            email.setCc(ccAddressesList);
        }
    
        email.send();
    }

    /**
     * 发送带附件的邮件方式  邮件内容有标题和邮件内容和附件，附件可以是本地机器上的文本，也可以是web上的一个URL 文件，
     * 当为web上的一个URL文件时，此方法可以将WEB中的URL文件先下载到本地，再发送给收入用户
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 发件人的邮件地址
     * @param multiPaths       附件文件数组
     * @throws EmailException
     */

    public static void sendMultiPartEmail(String host, String username, String password, String subject,
                                          String contents, String toEmailAddress, String fromEmailAddress,
                                          String []multiPaths) throws MalformedURLException, EmailException
    {
        List<EmailAttachment> attachmentList = new ArrayList<EmailAttachment>();
        if (multiPaths != null)
        {
            for (int i = 0; i < multiPaths.length; i++)
            {
                EmailAttachment attachment = new EmailAttachment();
                if (multiPaths[i].indexOf("http") == -1)   //判断当前这个文件路径是否在本地  如果是：setPath  否则  setURL;
                {
                    attachment.setPath(multiPaths[i]);
                }
                else
                {
                    attachment.setURL(new URL(multiPaths[i]));
                }
                attachment.setDisposition(EmailAttachment.ATTACHMENT);
                attachment.setDescription("");
                attachmentList.add(attachment);
            }
        }

        //发送邮件信息
        setMultiPartEmailBasicProperty(host, username, password, subject, contents, fromEmailAddress);
        multiPartEmail.addTo(toEmailAddress);
        
        for (int i = 0; i < attachmentList.size(); i++)   //添加多个附件
        {
            multiPartEmail.attach((EmailAttachment) attachmentList.get(i));
        }
        multiPartEmail.send();
    }
    
    /**
     * 发送带附件的邮件方式  邮件内容有标题和邮件内容和附件，附件可以是本地机器上的文本，也可以是web上的一个URL 文件，
     * 当为web上的一个URL文件时，此方法可以将WEB中的URL文件先下载到本地，再发送给收入用户
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 发件人的邮件地址
     * @param multiPaths       附件文件数组
     * @param ccAddresses             抄送人的地址列表
     * @throws EmailException
     */
    public static void sendMultiPartEmailAndCc(String host, String username, String password, String subject,
            String contents, String toEmailAddress, String fromEmailAddress,
            String []multiPaths,List<String> ccAddresses) throws EmailException, AddressException, MalformedURLException{
        //设置抄送人
        if(ccAddresses != null){
            List<InternetAddress> ccAddressesList = new ArrayList<InternetAddress>();
            for(String cc : ccAddresses){
                ccAddressesList.add(new InternetAddress(cc));
            }
            multiPartEmail.setCc(ccAddressesList);
        }
        
        sendMultiPartEmail(host, username, password, subject, contents, toEmailAddress, fromEmailAddress, multiPaths);
        
    }

    /**
     * 发送带附件的邮件方式  邮件内容有标题和邮件内容和附件，附件可以是本地机器上的文本，也可以是web上的一个URL 文件，
     * 当为web上的一个URL文件时，此方法可以将WEB中的URL文件先下载到本地，再发送给收入用户
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址数组
     * @param fromEmailAddress 发件人的邮件地址
     * @param multiPaths       附件文件数组
     * @throws EmailException
     */

    public static void sendMultiPartEmail(String host, String username, String password, String subject,
                                          String contents, String[] toEmailAddress, String fromEmailAddress,
                                          String []multiPaths) throws MalformedURLException, EmailException
    {
        List<EmailAttachment> attachmentList = new ArrayList<EmailAttachment>();
        if (multiPaths != null)
        {
            for (int i = 0; i < multiPaths.length; i++)
            {
                EmailAttachment attachment = new EmailAttachment();
                if (multiPaths[i].indexOf("http") == -1)   //判断当前这个文件路径是否在本地  如果是：setPath  否则  setURL;
                {
                    attachment.setPath(multiPaths[i]);
                }
                else
                {
                    attachment.setURL(new URL(multiPaths[i]));
                }
                attachment.setDisposition(EmailAttachment.ATTACHMENT);
                attachment.setDescription("");
                attachmentList.add(attachment);
            }
        }

        //发送邮件信息
        setMultiPartEmailBasicProperty(host, username, password, subject, contents, fromEmailAddress);
        //发送给多个人
        for (int i = 0; i < toEmailAddress.length; i++)
        {
            multiPartEmail.addTo(toEmailAddress[i], toEmailAddress[i]);
        }
        //添加多个附件
        for (int i = 0; i < attachmentList.size(); i++)   
        {
            multiPartEmail.attach((EmailAttachment) attachmentList.get(i));
        }
        multiPartEmail.send();
    }
    
    /**
     * 发送带附件的邮件方式  邮件内容有标题和邮件内容和附件，附件可以是本地机器上的文本，也可以是web上的一个URL 文件，
     * 当为web上的一个URL文件时，此方法可以将WEB中的URL文件先下载到本地，再发送给收入用户
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址数组
     * @param fromEmailAddress 发件人的邮件地址
     * @param multiPaths       附件文件数组
     * @param ccAddresses              抄送人地址列表
     * @throws EmailException
     * @throws AddressException 
     */

    public static void sendMultiPartEmailAndCc(String host, String username, String password, String subject,
                                          String contents, String[] toEmailAddress, String fromEmailAddress,
                                          String []multiPaths, List<String> ccAddresses) throws MalformedURLException, EmailException, AddressException
    {
        //设置抄送人
        if(ccAddresses != null){
            List<InternetAddress> ccAddressesList = new ArrayList<InternetAddress>();
            for(String cc : ccAddresses){
                ccAddressesList.add(new InternetAddress(cc));
            }
            multiPartEmail.setCc(ccAddressesList);
        }
        
        sendMultiPartEmail(host, username, password, subject, contents, toEmailAddress, fromEmailAddress, multiPaths);
    }


    /**
     * 发送Html格式的邮件，单个收件人
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 发件人邮件地址
     * @throws EmailException
     */
    public static void sendHtmlEmail(String host, String username, String password, String subject, String contents, String toEmailAddress, String fromEmailAddress) throws EmailException
    {
        
        setHtmlEmailBasicProperty(host, username, password, subject, contents, fromEmailAddress);
        //发送给一人
        htmlEmail.addTo(toEmailAddress);
        htmlEmail.send();
    }
    
    /**
     * 发送Html格式的邮件(单个收件人),并抄送
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址
     * @param fromEmailAddress 抄送人的邮件地址
     * @param ccAddresses
     * @throws EmailException
     */
    public static void sendHtmlEmailAndCc(String host, String username, String password, String subject, String contents, String toEmailAddress, String fromEmailAddress,List<String> ccAddresses) throws AddressException, EmailException{
        //设置抄送人
        if(ccAddresses != null){
            List<InternetAddress> ccAddressesList = new ArrayList<InternetAddress>();
            for(String cc : ccAddresses){
                ccAddressesList.add(new InternetAddress(cc));
            }
            htmlEmail.setCc(ccAddressesList);
        }
        
        sendHtmlEmail(host, username, password, subject, contents, toEmailAddress, fromEmailAddress);
    }

    /**
     * 发送Html格式的邮件，多个收件人
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址数组
     * @param fromEmailAddress 发件人邮件地址
     * @throws EmailException
     */
    public static void sendHtmlEmail(String host, String username, String password, String subject, String contents, String[] toEmailAddress, String fromEmailAddress) throws EmailException
    {
        setHtmlEmailBasicProperty(host, username, password, subject, contents, fromEmailAddress);
        
        //发送给多个人
        for (int i = 0; i < toEmailAddress.length; i++)
        {
            htmlEmail.addTo(toEmailAddress[i], toEmailAddress[i]);
        }
       
        htmlEmail.send();
    }
    
    /**
     * 发送Html格式的邮件，多个收件人，抄送邮件
     *
     * @param host             邮件服务器地址
     * @param username         连接邮件服务器的用户名称
     * @param password         连接邮件服务器的用户密码
     * @param subject          邮件的主题
     * @param contents         邮件的内容
     * @param toEmailAddress   收件人的邮件地址数组
     * @param fromEmailAddress 发件人邮件地址
     * @param ccAddresses      抄送人邮件地址
     * @throws EmailException
     * @throws AddressException 
     */
    public static void sendHtmlEmailAndCc(String host, String username, String password, String subject, String contents, String[] toEmailAddress, String fromEmailAddress, List<String> ccAddresses) throws EmailException, AddressException
    {
        //设置抄送人
        if(ccAddresses != null){
            List<InternetAddress> ccAddressesList = new ArrayList<InternetAddress>();
            for(String cc : ccAddresses){
                ccAddressesList.add(new InternetAddress(cc));
            }
            htmlEmail.setCc(ccAddressesList);
        }
        
        sendHtmlEmail(host, username, password, subject, contents, toEmailAddress, fromEmailAddress);
    }
    
    
}