java发送邮件

先把自己的邮箱设置一下接口服务

登录你的邮箱，点击设置——账户下操作。最重要的是生成授权码！！！

需要的jar

 <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.7</version>
        </dependency>

案例代码

    <bean class="org.springframework.mail.javamail.JavaMailSenderImpl" id="javaMailSender">
        <property name="password" value="${mail.password}"/>
        <property name="username" value="${mail.account}"/>
        <property name="host" value="${mail.host}"/>
        <property name="port" value="${mail.port}"/>
    </bean>

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

    @Autowired
    JavaMailSender javaMailSender;
    @Override
    public void send( String to, String context) {

        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        //account
        simpleMailMessage.setFrom(account);
        simpleMailMessage.setTo(to);
        simpleMailMessage.setSubject("爱旅行的激活码");//标题
        simpleMailMessage.setText(context);
        javaMailSender.send(simpleMailMessage);

    }

测试类demo

public class SpringSendMail {
    public static void main(String[] args) {


        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
        javaMailSender.setHost("smtp.qq.com");
        javaMailSender.setPassword("换成你的授权码");//授权码
        javaMailSender.setPort(25);
        javaMailSender.setUsername("jf3q@qq.com");

        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        simpleMailMessage.setFrom("jf3q@qq.com");
        simpleMailMessage.setTo("1913284695@qq.com");
        simpleMailMessage.setSubject("爱旅行的激活码");//标题
        simpleMailMessage.setText("123456");
        javaMailSender.send(simpleMailMessage);
    }
}