1.maven依赖

<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.jz</groupId><artifactId>mail-project</artifactId><version>0.0.1-SNAPSHOT</version><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.1.RELEASE</version></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><!--定时任务和@Slf4j注解日志的依赖 --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><!--邮件发送 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId><version>2.1.3.RELEASE</version><type>pom</type></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration> <!--设置程序执行的主类 --><mainClass>com.jz.ApplicationRun</mainClass></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-surefire-plugin</artifactId><configuration><skip>true</skip></configuration></plugin></plugins><finalName>test-log</finalName></build></project>

2.application.properties配置

#==================================
# servlet 相关配置
#----------------------------------
# 设置项目路径。默认是“/”
#server.servlet.context-path=/api
server.port=8888spring.mail.host=smtp.qq.com
spring.mail.username=你的邮箱，这里QQ
spring.mail.password=申请的授权码
spring.mail.default-encoding=UTF-8

QQ邮箱都有，问题是怎么成为开发可以使用的，这里有一个百度经验，还是很简洁明了的，地址:https://jingyan.baidu.com/article/6d704a133a245f28db51caf5.html

3. 关键代码

3.1 HelloService

package cn.xdl.service;import java.io.File;import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;@Service
public class HelloService {@Value("${spring.mail.username}")private String from;@Autowiredprivate JavaMailSender mailSender;public void sayHello() {System.out.println("Hello World");}/*** 发送文本邮件* @param to* @param subject* @param content*/public void sendSimpleMail(String to,String subject,String content) {SimpleMailMessage message = new SimpleMailMessage();message.setTo(to);message.setSubject(subject);message.setText(content);message.setFrom(from);mailSender.send(message);}/*** 发送html邮件* @param to* @param subject* @param content* @throws Exception*/public void sendHtmlMail(String to,String subject,String content) throws Exception {MimeMessage message = mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(message,true);helper.setTo(to);helper.setSubject(subject);helper.setText(content,true);helper.setFrom(from);mailSender.send(message);}/*** 发送带附件邮件* @param to* @param subject* @param content* @param filePath* @throws Exception*/public void sendAttachmentMail(String to,String subject,String content,String filePath) throws Exception {MimeMessage message = mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(message,true);helper.setFrom(from);helper.setTo(to);helper.setSubject(subject);helper.setText(content,true);FileSystemResource fileSystemResource = new FileSystemResource(new File(filePath));String fileName = fileSystemResource.getFilename();helper.addAttachment(fileName, fileSystemResource);helper.addAttachment(fileName+"_test", fileSystemResource);mailSender.send(message);}/*** 发送带图片邮件* @param to* @param subject* @param content* @param rscPath* @param rscId* @throws MessagingException*/public void sendInlineResourceMail(String to,String subject,String content,String rscPath,String rscId) throws MessagingException {MimeMessage message = mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(message,true);helper.setTo(to);helper.setSubject(subject);helper.setText(content,true);helper.setFrom(from);FileSystemResource res = new FileSystemResource(new File(rscPath));helper.addInline(rscId, res);mailSender.send(message);}}

3.2 ApplicationRun

package cn.xdl;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
public class ApplicationRun {public static void main(String[] args) {SpringApplication.run(ApplicationRun.class, args);}
}

3.3 测试程序

package cn.xdl.test;import javax.mail.MessagingException;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.test.context.junit4.SpringRunner;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;import cn.xdl.service.HelloService;@RunWith(SpringRunner.class)
@SpringBootTest
public class TestC {@Autowiredprivate HelloService helloService;@Autowiredprivate TemplateEngine templateEngine;@Testpublic void testHello() {helloService.sayHello();}@Testpublic void sendSimpleMailTest() {String str = "曾经先后在互联网金融、第三方支付公司担任高级 Java 工程师、架构师、技术经理、技"+ "术负责人等职务。在互联网金融工作期间，从零参与公司技术平台建设，组织平台进行过四次大架"+ "构升级。目前在一家第三方支付公司做技术总监，负责支付公司微服务架构实践和大数据平台建设。";helloService.sendSimpleMail("mail_test416@163.com", "这是第一封邮件",str);}@Testpublic void sendHtmlMailTest() {String str = "<html lang=\"en\">\r\n" + " <head>\r\n" + " </head>\r\n" + " <body>\r\n" + " <h3>Java并发编程高阶技术-高性能并发框架源码解析与实战</h3>\r\n" + " </body>\r\n" + "</html>";try {helloService.sendHtmlMail("mail_test416@163.com", "Spring Boot 发送邮件", str);} catch (Exception e) {e.printStackTrace();};}@Testpublic void sendFileMailTest() {String str = "为了您能及时收到会员专属信息，请将  vip@dailydeals.vip.com加入您的邮件地址列表";try {helloService.sendAttachmentMail("mail_test416@163.com", "POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务", str, "D:\\Images/1.jpg");} catch (Exception e) {e.printStackTrace();}}@Testpublic void sendInLineResourceMailTest() {String rscPath = "D:/Images/1.jpg";String rscId = "neo001";String content = "<html lang=\"en\">\r\n" + " <head>\r\n" + " </head>\r\n" + " <body>\r\n" + " <h3>Java并发编程高阶技术-高性能并发框架源码解析与实战</h3>\r\n" + "<img src='cid:"+rscId+"'/>"+" </body>\r\n" + "</html>";String to = "mail_test416@163.com";String subject = "慕课网_来慕课网学前端框架_上班族提升必备2222222222222";try {helloService.sendInlineResourceMail(to, subject, content, rscPath, rscId);} catch (MessagingException e) {e.printStackTrace();}}@Testpublic void testTemplateMailTest() {Context context = new Context();context.setVariable("id", "007");String emailContent = templateEngine.process("emailTemplate", context);String to = "mail_test416@163.com";String subject = "文明交流互鉴推动构建人类命运共同体";try {helloService.sendHtmlMail(to, subject, emailContent);} catch (Exception e) {e.printStackTrace();}}
}

3.4 发送结果成功图

比较忙，等闲暇会将源码发布上来，目前需要源码的可以评论留邮箱，或者发我邮箱讲明要源码，我是Eclipse开发的。邮箱:liurui416@qq.com
有不对的地方欢迎指正！！！
个人反感收费积分，但另一方面必须尊重知识产权,有积分的可以下载，没有的可以私我邮箱，下载地址:https://download.csdn.net/download/liurui50/11071712

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