[자바 메일]javax mail Could not convert socket to TLS

pom에 추가한 부분.

https://mvnrepository.com/artifact/org.springframework/spring-context-support

https://mvnrepository.com/artifact/javax.mail/mail

<bean id="mailSend" class="org.springframework.mail.javamail.JavaMailSenderImpl">
		<property name="host" value="smtp.gmail.com"/>
		<property name="port" value="587"/>
		<property name="username" value="발신 이메일"/>
		<property name="password" value="이메일의 앱 비밀번호"/>
		<property name="defaultEncoding" value="utf-8"/>
		
			
		<property name="javaMailProperties">
            <props>
                <prop key="mail.smtp.starttls.enable">true</prop>
                <prop key="mail.smtp.auth">true</prop>
                <prop key="mail.transport.protocol">smtp</prop>
                <prop key="mail.debug">true</prop>
                <prop key="mail.smtp.ssl.trust">smtp.gmail.com</prop>
                <prop key="mail.smtp.ssl.protocols">TLSv1.2</prop>
           </props>
        </property>

참고 페이지 : https://heestory217.tistory.com/124