spring发送支持HTML邮件

雨点打透心脏的1/2处 2022-07-24 05:02 192阅读 0赞

1、发送Email工具类

package com.iss.itreasury.test.htmlmail;
    
    
    import javax.mail.internet.MimeMessage;
    
    import org.springframework.core.io.ClassPathResource;
    import org.springframework.mail.SimpleMailMessage;
    import org.springframework.mail.javamail.JavaMailSender;
    import org.springframework.mail.javamail.MimeMessageHelper;
    /**
     * -----------------------------------------
     * @文件: Email.java
     * @作者: fancy
     * @邮箱: fancydeepin@yeah.net
     * @时间: 2012-6-12
     * @描述: 发送Email工具类
     * -----------------------------------------
     */
    public class Email {
        
        private JavaMailSender javaMailSender;
        private SimpleMailMessage simpleMailMessage;
        
      /**
         * @方法名: sendMail 
         * @参数名：@param subject  邮件主题
         * @参数名：@param content 邮件主题内容
         * @参数名：@param to         收件人Email地址
         * @描述语: 发送邮件
         */
        public void sendMail(String subject, String content, String to) {
            
            try {
                MimeMessage mimeMessage = javaMailSender.createMimeMessage();
              /**
                 * new MimeMessageHelper(mimeMessage,true)之true个人见解：
                 * 关于true参数,官方文档是这样解释的：
                 * use the true flag to indicate you need a multipart message
                 * 翻译过来就是：使用true,以表明你需要多个消息
                 * 再去翻一下MimeMessageHelper的API,找到这样一句话：
                 * supporting alternative texts, inline elements and attachments
                 * 也就是说,如果要支持内联元素(HTML)和附件就必须给定第二个参数为true
                 * 否则抛出 java.lang.IllegalStateException 异常
                 */
              /**
                 * 刚开始收到邮件显示中文乱码,于是赶紧查看官方文档,没有提到,再查阅API,也没有查到Set编码的方法,
                 * 于是就在HTML里面自己指定编码,也不起作用,邮件还是显示中文乱码;
                 * 最后的结论是：如果HTML内容含有中文必须指定HTML的编码,默认是ISO-8859-1,所以会显示中文乱码
                 * 在MimeMessageHelper的构造方法中找到：
                 * MimeMessageHelper(MimeMessage mimeMessage, boolean multipart, String encoding)
                 * 实验一下,OK,原来编码是在这儿设置,没事了,中文正常显示
                 */
                MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage,true,"UTF-8");
                messageHelper.setFrom(simpleMailMessage.getFrom()); //设置发件人Email
                messageHelper.setSubject(subject); //设置邮件主题
                messageHelper.setText(content);   //设置邮件主题内容
                messageHelper.setTo(to);          //设定收件人Email
                //步骤 1
                //资源的引用方法：cid:你自己设置的资源ID
                messageHelper.setText( 
                "<html>" + 
                  "<body>" +
                    "<BR>" +
                    "<div align='center'>" +
                      "<img src='cid:imageid'/>" +
                      "<BR>" +
                      "<h4>" +
                        "返回 fancydeepin 的Blogjava：" +
                        "<a href='http://www.blogjava.net/fancydeepin/'>http://www.blogjava.net/fancydeepin/</a>" +
                      "</h4>" +
                    "</div>" +
                  "</body>" +
                "</html>", true);
              /**
                 * ClassPathResource：很明显就是类路径资源,我这里的附件是在项目里的,所以需要用ClassPathResource
                 * 如果是系统文件资源就不能用ClassPathResource,而要用FileSystemResource,例：
                 * FileSystemResource file = new FileSystemResource(new File("D:/woniu.png"));
                 */
              /**
                 * 如果想在HTML中使用资源,必须在HTML中通过资源 ID 先引用资源,然后才来加载资源
                 */
                //步骤 2
                ClassPathResource image = new ClassPathResource("images/body.png");
                messageHelper.addInline("imageid", image);
                javaMailSender.send(mimeMessage);    //发送HTML邮件
                
            } catch (Exception e) {System.out.println("异常信息：" + e);}
        }
        //Spring 依赖注入
        public void setSimpleMailMessage(SimpleMailMessage simpleMailMessage) {
            this.simpleMailMessage = simpleMailMessage;
        }
        //Spring 依赖注入
        public void setJavaMailSender(JavaMailSender javaMailSender) {
            this.javaMailSender = javaMailSender;
        }
    }

2、测试类

package com.iss.itreasury.test.htmlmail;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class EmailTest {
    	 public static void main(String[] args) {
    	        ApplicationContext context = new ClassPathXmlApplicationContext("emailConfig.xml");
    	        Email mail = (Email)context.getBean("simpleMail");
    	        mail.sendMail("Spring SMTP Mail HTML Subject", "Spring SMTP HTML Text Content", "263996530@qq.com");
    	        //mail.sendMail("标题", "内容", "收件人邮箱");
    	    }
    }

3、xml配置文件（emailConfig.xml放在src目下）

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
      
        <bean id="javaMailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
            
            <property name="host" value="smtp.****.com" />
            
            <property name="port" value="25" />
            
            <property name="username" value="*****"/>
            
            <property name="password" value="*****"/>
            
            <property name="javaMailProperties">
                <props>
                   
                   <prop key="mail.smtp.auth">true</prop>
               </props>
            </property>
        </bean>
        
        
        <bean id="simpleMailMessage" class="org.springframework.mail.SimpleMailMessage">
          
            <property name="from" value="*****@*****.com" />
            
        </bean>
        
        <bean id="simpleMail" class="com.iss.itreasury.syscore.utils.EmailUtilForHtml">
            <property name="javaMailSender" ref="javaMailSender" />
            <property name="simpleMailMessage" ref="simpleMailMessage" />
        </bean>
        
    </beans>