SpringBoot整合email - 成就云开发者社区

构建项目（以QQ邮箱为例）

构建SpringBoot项目(web)

pom.xml

代码语言：javascript

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

application.properties(敲黑板)

spring.mail.username为你QQ邮箱

spring.mail.password不是不是不是你的邮箱密码，是授权码，授权码，授权码（授权码获取方式在下面有）

代码语言：javascript

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######################################
###Email
######################################
spring.mail.host=smtp.qq.com
#spring.mail.host=14.17.57.241
spring.mail.username=2568230656@qq.com
spring.mail.password=nezkixooldtw
spring.mail.default-encoding=UTF-8
spring.mail.port=465
spring.mail.properties.mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.debug=true

EmailService

代码语言：javascript

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package com.example.demo;
import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.mail.SimpleMailMessage;

import org.springframework.mail.javamail.JavaMailSender;

import org.springframework.stereotype.Service;
@Service

public class EmailService {
@Autowired
private JavaMailSender mailSender;

// 发送简单邮件
/**
 * 
 * @param from
 *            发送方
 * @param to
 *            接收方
 * @param subject
 *            主题
 * @param text
 *            内容
 */
public void sendSimpleMail(String from, String to, String subject, String text) {

	SimpleMailMessage message = new SimpleMailMessage();
	message.setFrom(from);
	message.setTo(to);
	message.setSubject(subject);
	message.setText(text);
	mailSender.send(message);
}

}

EmailController

代码语言：javascript

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package com.example.demo;
import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.ResponseBody;
@Controller

public class EmailController {
@Autowired
private EmailService emailService;

@RequestMapping(&#34;/email&#34;)
@ResponseBody
public String sendEmail() {

	// 发送邮件
	emailService.sendSimpleMail(&#34;2568230656@qq.com&#34;, &#34;956056312@qq.com&#34;, &#34;主题：简单邮件&#34;, &#34;测试邮件内容&#34;);

	return &#34;success&#34;;
}

}

测试

代码语言：javascript

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http://localhost:8080/email

遇到的坑

异常

exception

具体异常记不清楚，我把异常用谷歌翻译的大体意思是 smtp.qq.com解析不到

解决办法

确保 ①用户名、②密码（授权码）、③编码、④邮箱开启POP3/SMTP服务没有问题的基础之上，用URL地址，查询（smtp.qq.com）或者（smtp.163.com）的ip地址，将配置文件中的域名改为你查询到的ip地址，如下所示

代码语言：javascript

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#spring.mail.host=smtp.qq.com

spring.mail.host=14.18.245.164

发送邮箱运行太慢

表现形式：

请求URL后要转圈圈很长一段时间

解决办法：异步加载

1)在方法上添加注解@Async

代码语言：javascript

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@Async

public void sendSimpleMail(String from, String to, String subject, String text) {
	SimpleMailMessage message = new SimpleMailMessage();
	message.setFrom(from);
	message.setTo(to);
	message.setSubject(subject);
	message.setText(text);
	mailSender.send(message);
}</code></pre></div></div><p>2)在启动类上开启异步注解功能@EnableAsync</p><div class="rno-markdown-code"><div class="rno-markdown-code-toolbar"><div class="rno-markdown-code-toolbar-info"><div class="rno-markdown-code-toolbar-item is-type"><span class="is-m-hidden">代码语言：</span>javascript</div></div><div class="rno-markdown-code-toolbar-opt"><div class="rno-markdown-code-toolbar-copy"><i class="icon-copy"></i><span class="is-m-hidden">复制</span></div></div></div><div class="developer-code-block"><pre class="prism-token token line-numbers language-javascript"><code class="language-javascript" style="margin-left:0">@SpringBootApplication

@EnableAsync//开启异步注解功能

public class SpringBootDemoApplication {
public static void main(String[] args) {
	SpringApplication.run(SpringBootDemoApplication.class, args);
}

}

邮箱授权码的获取（以QQ邮箱为例）