10.整合email

整合email

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

spring.mail.host=smtp.qq.com
spring.mail.username=xxx@qq.com
# 授权码 qq邮箱->设置->账户->pop3/SMTP服务
spring.mail.password=
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class EmailConfig {
    @Value("${spring.mail.username}")
    private String emailFrom;

    public String getEmailFrom() {
        return emailFrom;
    }

    public void setEmailFrom(String emailFrom) {
        this.emailFrom = emailFrom;
    }
}

import freemarker.template.Template;
import org.springframework.beans.factory.annotation.Autowired;
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;
import org.springframework.ui.freemarker.FreeMarkerTemplateUtils;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;

import javax.mail.internet.MimeMessage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

@Service
public class EmailService {
    @Autowired
    private EmailConfig emailConfig;
    @Autowired
    private JavaMailSender javaMailSender;
    @Autowired
    private FreeMarkerConfigurer freeMarkerConfigurer;

    public void sendSimpleMail(String sendTo,String subject,String content){
        SimpleMailMessage mailMessage = new SimpleMailMessage();
        mailMessage.setFrom(emailConfig.getEmailFrom());
        mailMessage.setTo(sendTo);
        mailMessage.setSubject(subject);
        mailMessage.setText(content);
        javaMailSender.send(mailMessage);
    }

    //发送带附件的邮件
    public void sendAttachmentMail(String sendTo, String subject, String content, File file){
        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
            helper.setFrom(emailConfig.getEmailFrom());
            helper.setTo(sendTo);
            helper.setSubject(subject);
            helper.setText(content);
            helper.addAttachment("附件",new FileSystemResource(file));//文件名，文件
        } catch (Exception e) {
            e.printStackTrace();
        }
        javaMailSender.send(mimeMessage);
    }
    //发送模版邮件
    //这里用的是freemarker
    public void sendTemplateMail(String sendTo, String subject, String content, String templateName){
        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
            helper.setFrom(emailConfig.getEmailFrom());
            helper.setTo(sendTo);
            helper.setSubject(subject);
            Map<String,Object> model = new HashMap<>();
            model.put("name",content);
            Template template = freeMarkerConfigurer.getConfiguration().getTemplate(templateName);
            String html = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);
            helper.setText(html,true);
        } catch (Exception e) {
            e.printStackTrace();
        }
        javaMailSender.send(mimeMessage);
    }
}

测试

import com.app.SpringDemoApp;
import com.fly.email.EmailService;
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.SpringJUnit4ClassRunner;

import java.io.File;

@SpringBootTest(classes = SpringDemoApp.class)
@RunWith(SpringJUnit4ClassRunner.class)
public class EmailServiceTest {
    @Autowired
    private EmailService emailService;

    @Test
    public void test1(){
        emailService.sendSimpleMail("xxx@qq.com","test","test email");
    }

    @Test
    public void test2(){
        File file = new File("src/main/resources/banner.txt");
        emailService.sendAttachmentMail("xxx@qq.com","test","test email2",file);
    }

    @Test
    public void test3(){
        emailService.sendTemplateMail("xxx@qq.com","test","test email3","index.ftl");
    }
}

templates/index.ftl

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>index</title>
</head>
<body>
<h4 style="color: red">${name}</h4>
</body>
</html>