springboot发送邮件

环境:

jdk: openjdk11

springboot: 2.1

操作系统: win10教育版 1903 未激活

1. pom.xml ( 部分 )

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>mail</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>mail</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
    </properties>

 <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
    </dependency>

2. application.properties

spring.mail.host=smtp.qq.com
spring.mail.username=649439330@qq.com
spring.mail.password=zcwrpmfigqovbb
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

3. 单元测试(默认使用 application.properties的配置发送)

###注入对象
    @Autowired
    private JavaMailSender jmailSender;
### 方法调用
    @Test
    public void sendOneByAutowiredJmailSender() {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom("649439330@qq.com");
        message.setTo("wangde007@outlook.com");
        message.setSubject("主题: 简单邮件");
        message.setText("这是一封简单邮件，跨越万水千山,到达这里");

        jmailSender.send(message);
    }

4. 直接调用(smtp用户密码已被混淆，请使用自己的smtp账号密码, qq邮箱开启smtp方式参考 【qq邮箱开启SMTP服务】)

##对象声明
    private JavaMailSender mailSender;
##对象初始化
    @Before
    public void initSender() {
        JavaMailSenderImpl jmSender = new JavaMailSenderImpl();

        jmSender.setHost("smtp.qq.com");
        jmSender.setUsername("649439330@qq.com");
        jmSender.setPassword("zcwrpmfigqovbb");
//        jmSender.setPort(465);
        jmSender.setProtocol("smtp");
        jmSender.setDefaultEncoding("UTF-8");


        Properties properties = new Properties();
        properties.setProperty("mail.smtp.auth","true");
        properties.setProperty("mail.smtp.starttls.enable","true");
        properties.setProperty("mail.smtp.starttls.required","true");
//        properties.setProperty("","");

        jmSender.setJavaMailProperties(properties);
        mailSender = jmSender;
    }
## 方法调用
    @Test
    public void sendOne() {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom("649439330@qq.com");
        message.setTo("wangde007@outlook.com");
        message.setSubject("主题: 简单邮件");
        message.setText("这是一封简单邮件，跨越万水千山,到达这里");

        mailSender.send(message);
    }
###附录:
以上使用对象的包路径如下:
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.test.context.junit4.SpringRunner;

import javax.mail.Session;
import java.util.Properties;