Question

我正在尝试使用Spring Boot发送电子邮件，因此我在mailtrap.io上创建了一个帐户，并添加了如下所示的必要配置

 spring.mail.host=smtp.mailtrap.io
spring.mail.port=2525
spring.mail.username=0cfcf8adb32fea
spring.mail.password=20d3c0f7a44694
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true

然后我创建了一个配置Java文件，如下所示：

package com.example.databasedemo;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class Emailcfg {
    @Value("${spring.mail.host}")
    private String host;

    @Value("${spring.mail.port}")
    private int port;

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

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

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public int getPort() {
        return port;
    }

    public void setPort(int port) {
        this.port = port;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

和一个Rest控制器：

    package com.example.databasedemo;

import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;


import javax.validation.ValidationException;

@RestController
@RequestMapping("/Mail")
public class mailController {

    private Emailcfg emailCfg;
    public  mailController(Emailcfg emailCfg){
        this.emailCfg = emailCfg;
    }


    @GetMapping
    public void senddmail(){

        // Create a mail sender
        JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
        mailSender.setHost(this.emailCfg.getHost());
        mailSender.setPort(this.emailCfg.getPort());
        mailSender.setUsername(this.emailCfg.getUsername());
        mailSender.setPassword(this.emailCfg.getPassword());
        // Create an email instance
        SimpleMailMessage mailMessage = new SimpleMailMessage();
       mailMessage.setFrom("elahidri.eh@gmail.com");
        mailMessage.setTo("elahidri.eh@gmail.com");
        mailMessage.setSubject("mail");
        mailMessage.setText("this is a mail test ");

        // Send mail
        mailSender.send(mailMessage);

    }

}

当我尝试执行它时，我没有出现任何错误，但是我什至都没有收到电子邮件，我在mailtrap.io框中找到了该电子邮件更新这是我调试时收到的消息：

DEBUG: JavaMail version 1.6.1
DEBUG: successfully loaded resource: /META-INF/javamail.default.providers
DEBUG: Tables of loaded providers
DEBUG: Providers Listed By Class Name: {com.sun.mail.smtp.SMTPSSLTransport=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Oracle], com.sun.mail.smtp.SMTPTransport=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle], com.sun.mail.imap.IMAPSSLStore=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Oracle], com.sun.mail.pop3.POP3SSLStore=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Oracle], com.sun.mail.imap.IMAPStore=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Oracle], com.sun.mail.pop3.POP3Store=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Oracle]}
DEBUG: Providers Listed By Protocol: {imaps=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Oracle], imap=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Oracle], smtps=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Oracle], pop3=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Oracle], pop3s=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Oracle], smtp=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle]}
DEBUG: successfully loaded resource: /META-INF/javamail.default.address.map
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle]
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.mailtrap.io", port 2525, isSSL false
220 mailtrap.io ESMTP ready
DEBUG SMTP: connected to host "smtp.mailtrap.io", port: 2525
EHLO elahidri
250-mailtrap.io
250-SIZE 5242880
250-PIPELINING
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-AUTH PLAIN LOGIN CRAM-MD5
250 STARTTLS
DEBUG SMTP: Found extension "SIZE", arg "5242880"
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg ""
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Found extension "DSN", arg ""
DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN CRAM-MD5"
DEBUG SMTP: Found extension "STARTTLS", arg ""
STARTTLS
220 2.0.0 Start TLS
EHLO elahidri
250-mailtrap.io
250-SIZE 5242880
250-PIPELINING
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 AUTH PLAIN LOGIN CRAM-MD5
DEBUG SMTP: Found extension "SIZE", arg "5242880"
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg ""
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Found extension "DSN", arg ""
DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN CRAM-MD5"
DEBUG SMTP: protocolConnect login, host=smtp.mailtrap.io, user=0cfcf8adb32fea, password=<non-null>
DEBUG SMTP: Attempt to authenticate using mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM XOAUTH2 
DEBUG SMTP: Using mechanism LOGIN
DEBUG SMTP: AUTH LOGIN command trace suppressed
DEBUG SMTP: AUTH LOGIN succeeded
QUIT
221 2.0.0 Bye

Answer 1

首先请确保您帐户的“两步验证”已禁用。然后按照以下步骤操作：

转到您的Google帐户安全设置（管理您的Google 帐户）
点击左侧的“安全”菜单
向下滚动并找到不太安全的应用访问权限。
打开“允许不太安全的应用”切换按钮。

或单击链接： https://myaccount.google.com/u/3/lesssecureapps?pageId=none

然后使用此设置在您的项目application.properties或java配置文件（如您的文件）中发送电子邮件。

spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username=your_email_account
spring.mail.password=password
spring.mail.properties.mail.transport.protocol=smtp
spring.mail.properties.mail.smtp.auth=false
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.encoding=UTF-8
spring.mail.properties.mail.from.email=your_email_account

就是这样。检查您的电子邮件是否已发送。

注意：此设置不适用于启用了两步验证的帐户。

Answer 2

请通过在属性文件中添加以下配置来进行调试。

spring.mail.debug = true

电子邮件不是使用simpleMailMessage

2 个答案: