写在前面：本文中使用126邮箱进行测试

代码地址: https://github.com/Blankwhiter/email

一、注册邮箱以及开启POP3/SMTP/IMAP

读者请自行注册，以及自行开启POP3/SMTP/IMAP。 在开启POP3/SMTP/IMAP过程中，会要求输入一个授权码，请记住，接下来将使用该授权密码进行邮件发送。

二、编写springboot配置文件以及代码

1.引入email环境。 pom.xml

<?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.email</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>email-springboot</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.6.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!--引入email环境--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

2.编写配置文件 application.yml

spring: mail: username: XXXX@126.com password: XXXXX (第一步的授权密码) host: smtp.126.com # qq邮箱需要多设置如下 # properties: # mail: # smtp: # ssl: # enable: true

3.测试代码

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.JavaMailSenderImpl; import org.springframework.mail.javamail.MimeMessageHelper; import org.springframework.test.context.junit4.SpringRunner; import javax.mail.internet.MimeMessage; import java.io.File; @RunWith(SpringRunner.class) @SpringBootTest public class EmailSpringbootApplicationTests { @Autowired JavaMailSenderImpl javaMailSender; /** * 发送简单邮件 */ @Test public void testSimpleMail() { SimpleMailMessage simpleMailMessage = new SimpleMailMessage(); simpleMailMessage.setSubject("这个是标题"); simpleMailMessage.setText("这个是测试内容"); simpleMailMessage.setFrom("XXXX@126.com"); simpleMailMessage.setTo("XXX@qq.com"); javaMailSender.send(simpleMailMessage); } /** * 发送复杂邮件 */ @Test public void testMimeMail() throws Exception{ MimeMessage mimeMessage = javaMailSender.createMimeMessage(); //第二个参数 邮件是否要附件 MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage,true); mimeMessageHelper.setSubject("it is also title "); //第二个参数 内容是否按html解析 mimeMessageHelper.setText(" <b> it is a content </a>",true); mimeMessageHelper.setFrom("XXX@126.com"); mimeMessageHelper.setTo("XXXX@qq.com"); mimeMessageHelper.addAttachment("banner.png",new File("C:\\Users\\monkey\\Pictures\\banner.png")); javaMailSender.send(mimeMessage); } }