spring boot mail 发送 设置代理服务器

版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。

本文链接： https://blog.csdn.net/qq_35809876/article/details/83904038

背景：

公司使用spring cloud 微服务  docker + Rancher + drone + maven 自动化部署。

网络环境 内网环境内部微服务必须通过代理服务器对外访问。邮件发送 必须通过代理服务器进行发送。

spring boot 封装了 JavaMail的类库 。

Spring Framework提供了一个使用JavaMailSender接口发送电子邮件的简单抽象 ，Spring Boot为它提供了自动配置以及启动器模块。

JavaMailSenderImpl为JavaMailSender接口的实现类实现发送。MailProperties为配置信息。

//源代码接口JavaMailSender 继承 MailSender 进行功能增强操作
public interface JavaMailSender extends MailSender {

    MimeMessage createMimeMessage();

    MimeMessage createMimeMessage(InputStream var1) throws MailException;

    void send(MimeMessage var1) throws MailException;

    void send(MimeMessage... var1) throws MailException;

    void send(MimeMessagePreparator var1) throws MailException;

    void send(MimeMessagePreparator... var1) throws MailException;
}

实现类代码 

//发送邮件的实现类源码
public class JavaMailSenderImpl implements JavaMailSender {
    public static final String DEFAULT_PROTOCOL = "smtp";
    public static final int DEFAULT_PORT = -1;
    private static final String HEADER_MESSAGE_ID = "Message-ID";
    //这个配置就是对应的JavaMail的资源信息
    private Properties javaMailProperties = new Properties();
    private Session session;
    private String protocol;
    private String host;
    private int port = -1;
    private String username;
    private String password;
    private String defaultEncoding;
    private FileTypeMap defaultFileTypeMap;

    public JavaMailSenderImpl() {
        ConfigurableMimeFileTypeMap fileTypeMap = new ConfigurableMimeFileTypeMap();
        fileTypeMap.afterPropertiesSet();
        this.defaultFileTypeMap = fileTypeMap;
    }

    public void setJavaMailProperties(Properties javaMailProperties) {
        this.javaMailProperties = javaMailProperties;
        synchronized(this) {
            this.session = null;
        }
    }

    public Properties getJavaMailProperties() {
        return this.javaMailProperties;
    }

    public synchronized void setSession(Session session) {
        Assert.notNull(session, "Session must not be null");
        this.session = session;
    }
    /**省略
}

同样，在java mail的官方文档中也有提到，如果使用的是jdk 1.5以上和java.mail 1.4.5，可以通过javaMailProperties配置，更多配置项，参考 com.sun.mail.smtp package。 <!-- javaMailSender -->

<bean id="javaMailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">  
    <property name="defaultEncoding" value="${email.encoding}"></property>  
    <property name="host" value="${email.host}"></property>  
    <property name="username" value="${email.username}"></property>  
    <property name="password" value="${email.password}"></property>  
    <property name="protocol" value="${email.protocal}"></property>  
    <property name="javaMailProperties">  
        <props>  
            <!-- 让服务器检验用户密码是否正确 -->  
            <prop key="mail.smtp.auth">true</prop>  
            <prop key="mail.smtp.timeout">25000</prop>  
            <prop key="mail.debug">true</prop>  
            <prop key="mail.smtp.ssl.enable">true</prop>  
            <prop key="mail.smtp.socks.host">cmproxy.gmcc.net</prop>  
            <prop key="mail.smtp.socks.port">8081</prop>  
            <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>  
        </props>  
    </property>  
</bean>  

可以看到 javaMailProperties配置属性 就可以实现socks代理服务器发送邮件

所以在我们在spring boot 里面 可以直接这样去设置 

/**
 * @Author: xlr
 * @Date: Created in 下午11:31 2018/11/8
 */
@Configuration
@Import(MailProperties.class)
public class MailConfig {

    @Autowired
    MailProperties mailProperties;
    @Value( "${porxyHost}" )
    private String porxyHost;
    @Value( "${porxyPort}" )
    private String porxyPort;
    @Value( "${proxySet}" )
    private String proxySet;

    @Bean
    public JavaMailSender javaMailSender() {

        Properties properties = new Properties();
        properties.setProperty( "mail.smtp.socks.host", porxyHost );
        properties.setProperty( "mail.smtp.socks.port", porxyPort );
        properties.setProperty( "mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory" );
        properties.setProperty( "mail.smtp.auth", "true" );
        properties.setProperty( "mail.smtp.timeout", "25000" );
        properties.setProperty( "mail.smtp.ssl.enable", "true" );
        JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
        mailSender.setJavaMailProperties( properties );
        mailSender.setHost( mailProperties.getHost() );
        mailSender.setPassword( mailProperties.getPassword() );
        mailSender.setUsername( mailProperties.getUsername() );
        mailSender.setProtocol( mailProperties.getProtocol() );
        return mailSender;
    }



}

设置邮件代理服务邮件发送。