springboot发送带附件邮件并配置以防中文乱码

代码

package util;

import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
import java.io.File;
import java.io.UnsupportedEncodingException;

public class mailUtil {
    public static void sendSimpleTextMail(String to, String subject, String content, String filePath) {
        JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
        mailSender.setHost("smtp.163.com");//指定用来发送Email的邮件服务器主机名
        mailSender.setPort(25);//默认端口，标准的SMTP端口
        mailSender.setUsername("xxxx@163.com");//用户名
        mailSender.setPassword("xxxxxx");//密码
        MimeMessage message = mailSender.createMimeMessage();
        MimeMessageHelper helper;
        try {
            helper = new MimeMessageHelper(message, true, "UTF-8");
            //true代表支持多组件，如附件，图片等
            helper.setFrom("xxxx@163.com");
            helper.setTo(to); //收件人
            helper.setSubject(subject); //主题
            helper.setText(content, true); //内容
            FileSystemResource file = new FileSystemResource(new File(filePath));
            String fileName = file.getFilename();
            assert fileName != null;
            helper.addAttachment(MimeUtility.encodeWord(fileName, "utf-8", "B"), file);//添加附件，可多次调用该方法添加多个附件
            mailSender.send(message);
            System.out.println(mailSender.getUsername() + "==>" + to + "的邮件发送成功");
        } catch (MessagingException | UnsupportedEncodingException e) {
            System.out.println("发送带附件邮件失败" + e);
        }
    }
}

依赖

<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.4.7</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context-support</artifactId>
    <version>5.3.6</version>
</dependency>