java发送邮件工具类

1. 普通java实现邮件发送

1.1 创建maven项目，配置pom.xml文件

<?xml version="1.0" encoding="UTF-8"?> <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.it</groupId>     <artifactId>emailTest</artifactId>     <version>1.0-SNAPSHOT</version>      <properties>         <maven.compiler.source>8</maven.compiler.source>         <maven.compiler.target>8</maven.compiler.target>     </properties>     <dependencies> <!--    邮箱    mail-->         <dependency>             <groupId>javax.mail</groupId>             <artifactId>javax.mail-api</artifactId>             <version>1.6.2</version>         </dependency>         <dependency>             <groupId>com.sun.mail</groupId>             <artifactId>javax.mail</artifactId>             <version>1.6.2</version>         </dependency> <!--        测试工具 junit-->         <dependency>             <groupId>junit</groupId>             <artifactId>junit</artifactId>             <version>4.13.2</version>             <scope>test</scope>         </dependency>     </dependencies> </project> 

1.2 创建邮箱码值工具类

package com.it.util;  public class EntityCode {     //发件人邮箱     public static final String USER = "自己的邮箱号";     //授权码     public static final String PWD = "自己的邮箱号授权码";     //发送给对应的app,如果是163邮箱:smtp.163.com     public static final String HOST = "smtp.qq.com"; } 

1.3 创建邮箱发送邮件的工具类

package com.it.util;  import javax.mail.*; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import java.util.Properties;  public class MailUtil {     /**      * 创建邮件消息      * @return 创建的邮件消息      */     private static MimeMessage createMail(){         try {             Properties properties = new Properties();             properties.put("mail.smtp.auth",true);             properties.put("mail.smtp.host", EntityCode.HOST);             properties.put("mail.user",EntityCode.USER);             properties.put("mail.password",EntityCode.PWD);             // 构建授权信息，用于进行SMTP进行身份验证             Authenticator authenticator = new Authenticator() {                 @Override                 protected PasswordAuthentication getPasswordAuthentication() {                     return new PasswordAuthentication(EntityCode.USER, EntityCode.PWD);                 }             };             // 使用环境属性和授权信息，创建邮件会话             Session mailSession = Session.getInstance(properties, authenticator);             // 创建邮件消息             MimeMessage message = new MimeMessage(mailSession);             return message;         }catch (Exception e){             e.printStackTrace();         }         return null;     }      /**      * 发送一个简单的文本邮件      * @param to 收件人邮箱      * @param title 邮件标题      * @param text  邮件内容      * @return      */     public static boolean sendMail(String to,String title,String text){         MimeMessage message = createMail();         if (message==null){             return false;         }         try {             // 设置发件人             InternetAddress form = new InternetAddress(EntityCode.USER);             message.setFrom(form);              // 设置收件人             InternetAddress toAddress = new InternetAddress(to);             message.setRecipient(Message.RecipientType.TO, toAddress);              // 设置邮件标题             message.setSubject(title);              // 设置邮件的内容体             message.setContent(text, "text/html;charset=UTF-8");             // 发送邮件             Transport.send(message);         }catch (Exception e){             e.printStackTrace();         }         return true;     } } 

1.4 创建测试类

import com.it.util.MailUtil; import com.it.util.UUIDUtil; import org.junit.Test;  public class EmailTest {      @Test     public void Test1(){         String email = "2428596932@qq.com";         String title = "测试邮件";         String text  = UUIDUtil.getUUID();          boolean b = MailUtil.sendMail(email, title, text);         System.out.println("发送成功");     } }