https://blog.csdn.net/Tracycater/article/details/73441010

引入Maven依賴包

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
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163郵箱

application.properties

#####163郵箱########
spring.mail.host=smtp.163.com
spring.mail.username=*****@163.com
#163郵箱密碼

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(classes=Application.class)
public class My163MailTest {

@Autowired
private JavaMailSender javaMailSender;

@Value("${spring.mail.username}")
private String username;

@Test
public void testSendSimple() {
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom(username);
message.setTo("*******@qq.com");
message.setSubject("標題：測試標題");
message.setText("測試內容部份");
javaMailSender.send(message);
}
}
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QQ郵箱和163郵箱的區別是需要設定授權碼而不是密碼，具體操作參考：
http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=28&&no=1001256

application.properties

######qq郵箱########
spring.mail.host=smtp.qq.com
spring.mail.username=******@qq.com
#QQ郵箱授權碼
spring.mail.password=xuojxtkdojvzbhjj
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
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執行類：

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest(classes=Application.class)
public class MyQQMailTest {

@Autowired
private JavaMailSender javaMailSender;

@Value("${spring.mail.username}")
private String username;

@Test
public void testSendSimple() {
SimpleMailMessage message = new SimpleMailMessage();
message.setFrom(username);
message.setTo("******@qq.com");
message.setSubject("標題：測試標題");
message.setText("測試內容部份");
javaMailSender.send(message);
}
}
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作者：羅羅諾亞-小魚
來源：CSDN
原文：https://blog.csdn.net/Tracycater/article/details/73441010
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