我试图在Spring MVC 4中使用javamail来发送使用gmail的电子邮件，但那里出现了一些错误。错误说…

信息：收件人？= nishadhungana41@gmail.com，主题？=用户验证，消息？=您的密码是158046

信息：调试：getProvider（）返回javax.mail.Provider
[TRANSPORT，smtp，com.sun.mail.smtp.SMTPTransport，Oracle]

信息：调试SMTP：useEhlo true，useAuth true

信息：调试SMTP：尝试连接到主机“ smtp.mail.gmail.com”，端口587，isSSL为false

严重：PWC6117：找不到文件“空”

这是我的弹簧配置

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="host" value="smtp.mail.gmail.com" />
    <property name="port" value="587" />
    <property name="username" value="nishandhungana41@gmail.com" />
    <property name="password" value="*******" />
    <property name="javaMailProperties">
        <props>
            <prop key="mail.smtp.auth">true</prop>
            <prop key="mail.debug">true</prop>
            <prop key="mail.transport.protocol">smtp</prop>
            <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
            <prop key="mail.smtp.socketFactory.port">465</prop>
            <prop key="mail.smtp.starttls.enable">true</prop>
        </props>
    </property>
</bean>

这就是我制作控制器的方式

   @Controller
public class EmailController {

    private String emailToRecipient = "";
    private String emailSubject = "";
    private String emailMessage = "";
    private final String emailFromRecipient = "nishandhungana41@gmail.com";

    @Autowired
    private JavaMailSender mailSenderObj;

    @Autowired
    GeneratePIN generatePin;

    // This Method Is Used To Prepare The Email Message And Send It To The Client
    @RequestMapping(value = "/create-account", method = RequestMethod.POST)
    public @ResponseBody String sendEmailToClient() {

        // Reading Email Form Input Parameters      
        emailSubject = "User Verification";
        emailMessage = "Your pin is "+generatePin.pin();
        emailToRecipient = "nishadhungana41@gmail.com";

        // Logging The Email Form Parameters For Debugging Purpose
        System.out.println("\nReceipient?= " + emailToRecipient + ", Subject?= " + emailSubject + ", Message?= " + emailMessage + "\n");

        mailSenderObj.send(new MimeMessagePreparator() {
            @Override
            public void prepare(MimeMessage mimeMessage) throws Exception {

                MimeMessageHelper mimeMsgHelperObj = new MimeMessageHelper(mimeMessage, true, "UTF-8");
                mimeMsgHelperObj.setTo(emailToRecipient);
                mimeMsgHelperObj.setFrom(emailFromRecipient);
                mimeMsgHelperObj.setText(emailMessage);
                mimeMsgHelperObj.setSubject(emailSubject);

            }
        });
        System.out.println("\nMessage Send Successfully.... Hurrey!\n");

        return "Thank You! Your Email Has Been Sent!";
    }
}