搭建james邮件服务器

James是Apache的一个开源项目,纯Java实现,Apache james Server作为一个企业级的邮件服务器,对SMTP,POP3,IMAP等邮件协议提供完整的支持。

1.搭建James服务器

Apache James 的官方网站为:http://james.apache.org/,当前 Server 的最新版为 2.3.2版. 安装非常简单,下载后得到apache-james-2.3.2.zip 文件,解压后即可。

在James的bin目录中包含两个重要文件run.bat和run.sh,运行run.bat就可以轻松地启动James邮件服务器。

  启动后能在控制台看到如下信息,说明启动成功:

搭建james邮件服务器

说明:启动前请确保您的JDK环境变量如JAVA_HOME等已经设置好;James 启动时,其SMTP 服务默认在 25 端口启动,POP3 服务默认在 110 端口启动, NNTP 服务默认在 119 端口启动, 请确保这些端口未被占用。比如本系统下就已经安装了Microsoft的 SMTP 服务,造成 James无法启动,解决方法为:开始--->设置--->控制面板--->管理工具--->服务,打开后找到“Simple Mail Transport Protocol(SMTP)”服务项,关闭即可。

       5。配置服务

       服务器启动后会在本机配置一个默认的服务,这可以用来在本机上本服务器范围内收发邮件,但是邮件发不到163等外网邮箱。我们这里关注的重点就是配置一个能发到外网如163这样的邮箱的邮件,这样才有价值。不过由于本人是在本机上测试,一时不能获取公司的域名参数,无法测试接收外网邮箱(如163)的邮件,见晾,不过做法都是一样的,至少我们可以向外网邮箱发送邮件,局域网内可以收、发邮件。

打开D:\james-2.3.1\apps\james\SAR-INF 下的 config.xml 文件,初次启动James之前,不会有这个文件,只有当James服务启动一次之后才自动构件该文件。

<postmaster>Postmaster@localhost</postmaster>   
……   
<servernames autodetect="true" autodetectIP="true">   
    <servername>localhost</servername>   
</servernames>

 把localhost该成你自己想要的邮箱域名, 把自动探测IP属性设置为“false”这里假设改成 mail.com ,那么他的邮件地址就是 mail.com修改结果如下:

<postmaster>[email protected]</postmaster>   
……   
<servernames autodetect="false" autodetectIP="false">   
    <servername>mail.com</servername>   
</servernames>

 3.创建邮件帐号

使用telnet连接James的Remote Administration Tool。打开一个控制台窗口,输入telnet smtp.163.com

JAMES Remote Administration Tool 2.3.1   
Please enter your login and password   
Login id:   
root
Password:
root   
Welcome root. HELP for a list of commands

 创建新用户的命令是:adduser username password

提示用户可以通过“HELP”命令来查询suo9支持的所有命令

help display this help 显示帮助信息   
listusers display existing accounts 显示现有账户   
countusers display the number of existing accounts 显示现有账户数量   
adduser [username] [password] add a new user 添加一个新用户   
verify [username] verify if specified user exist 核实指定用户是否存在   
deluser [username] delete existing user 删除存在的用户   
setpassword [username] [password] sets a user's password 设置用户密码   
setalias [user] [alias] locally forwards all email for 'user' to 'alias' 设置邮箱别名   
showalias [username] shows a user's current email alias 显示别名   
unsetalias [user] unsets an alias for 'user' 删除用户别名   
setforwarding [username] [emailaddress] forwards a user's email to another email address 转发用户的电子邮件地址到另一个电子邮件地址   
showforwarding [username] shows a user's current email forwarding 显示用户的当前邮件转发   
unsetforwarding [username] emoves a forward 删除转发   
user [repositoryname] change to another user repository 改变另一个用户库   
shutdown kills the current JVM (convenient when James is run as a daemon)关闭当前的服务   
quit close connection 关闭连接

示例:

public class Mail {
  private String mailServer,from,to,mailSubject,mailContent;
  private String username,password;
  public Mail(){
      //设置邮件信息
      //进行认证登录的用户名
      username="[email protected]";
      //认证密码
      password="456";
      //认证的邮箱对应的邮件服务器
      mailServer="smtp.163.com";
      //发件人信息
      from="[email protected]";
      //收件人信息
      to="[email protected]";
      //邮件标题
      mailSubject="嘿嘿";
      //邮件内容
      mailContent="天不错!";
  }
  //设置邮件服务器
  @SuppressWarnings("static-access")
public  void send(){
      Properties prop=System.getProperties();
      //指定邮件server
      prop.put("mail.smtp.host", mailServer);
      //是否开启认证
      prop.put("mail.smtp.auth", "true");
      //smtp协议的
      prop.put("mail.smtp.port", "25");
      //产生Session服务
      EmailAuthenticator mailauth=new EmailAuthenticator(username, password);
      Session mailSession=Session.getInstance(prop,(Authenticator)mailauth);
       try {
           //封装Message对象
           Message message=new MimeMessage(mailSession);
           
           message.setFrom(new InternetAddress(from)); //发件人
           message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));//收件人
           message.setSubject(mailSubject);
           //设置内容(设置字符集处理乱码问题)
           message.setContent(mailContent,"text/html;charset=gbk");
           message.setSentDate(new Date());
           //创建Transport实例,发送邮件
           Transport tran=mailSession.getTransport("smtp");
           tran.send(message,message.getAllRecipients());
           tran.close();
           
        } catch (Exception e) {
            e.printStackTrace();
        }
  }
}

使用Spring发送电子邮件

创建SimpleMailMessage

SimpleMailMessage是MailMessage接口的实现类之一。

import org.springframework.mail.MailSender;
import org.springframework.mail.SimpleMailMessage;

public class Mail {
    private MailSender mailSender;
    public void setMailSender(MailSender mailSender) {
        this.mailSender = mailSender;
    }
    public void send(){
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom("[email protected]");
        message.setTo("tom");
        message.setSubject("问好");
        message.setText("好久不见,最近好吗?");
        mailSender.send(message);
    }
}

applicationContext.xml

<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="192.168.15.22"></property><!-- 服务器 -->
        <property name="port" value="25"></property><!-- 端口 -->
        <property name="username" value="[email protected]"></property><!-- 用户名 -->
        <property name="password" value="dzw"></property><!-- 密码 -->
        <property name="protocol" value="smtp" ></property><!-- 协议 -->
        <property name="defaultEncoding" value="utf-8"></property><!-- 默认编码 -->
        <property name="javaMailProperties">
            <props>
                <!-- 设置SMTP服务器需要用户验证  -->
                <prop key="mail.smtp.auth">true</prop>
            </props>
        </property>
    </bean>
    
    <bean id="mail" class="cn.bdqn.Mail">
        <property name="mailSender" ref="mailSender"></property>
    </bean>
    
    <bean id="mailWithAttachment" class="cn.bdqn.MailWithAttachment">
        <property name="mailSender" ref="mailSender"></property>
    </bean>
    
    <bean id="mailWithHtml" class="cn.bdqn.MailWithHTML">
        <property name="mailSender" ref="mailSender"></property>
    </bean>

</beans>

发送HTML格式的电子邮件

HTMl格式的文本属于MIME类型,需要MimeMessageHelper类的支持

public class MailWithHTML {
    private JavaMailSender mailSender; //必须使用 JavaMailSender
    public void setMailSender(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }
    
    public void send() throws MessagingException,IOException{
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
        helper.setFrom("[email protected]");
        helper.setTo("tom");
        helper.setSubject("欢迎来到员工社区");
        StringBuffer sb = new StringBuffer();
        sb.append("<html><head>");
        sb.append("<meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\">");
        sb.append("<head><body>");
        sb.append("<font color='blue' size='5' face='Arial'>");
        sb.append("尊敬的jerry您好:</font><br/><br/>");
        sb.append("&nbsp;&nbsp;&nbsp;&nbsp;");
        sb.append("<font color='black' size='4' face='Arial'>");
        sb.append("恭喜您在员工社区注册账号成功!请妥善保管您的账号," +
                "如果登录时忘记密码,可以在网站登录页找回。<br/>");
        sb.append("<br/><br/>系统管理员</font>");
        //增加内嵌图片设置
        sb.append("<br/><img src=\"cid:photo\"></img>");
        sb.append("</body></html>");
        helper.setText(sb.toString(),true);
        //增加内嵌文件
        ClassPathResource file = new ClassPathResource("/cn/bdqn/attachfiles/Quartz.png");
        helper.addInline("photo", file);
        mailSender.send(mimeMessage);
    }
}

通过setText()设置html参数为true,邮件内容就可以显示HTML页面。在HTML页面中,需要设置content属性,通过“text/html;charset=utf-8”

public class MailWithAttachment {
    private JavaMailSender mailSender; //必须使用 JavaMailSender
    public void setMailSender(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }
    
    public void send() throws MessagingException,IOException{
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
        helper.setFrom("[email protected]");
        helper.setTo("tom");
        
        helper.setSubject("问好");
        helper.setText("好久不见,最近好吗?");
        //添加附件1
        ClassPathResource file1 = new ClassPathResource(
                                        "/cn/bdqn/attachfiles/test.doc");
        helper.addAttachment(file1.getFilename(), file1.getFile());
        //添加附件2:附件的文件名为中文时,需要对文件名进行编码转换,解决乱码问题
        ClassPathResource file2 = new ClassPathResource(
                                        "/cn/bdqn/attachfiles/附件测试文件.doc");
        helper.addAttachment(MimeUtility.encodeWord(file2.getFilename()),file2.getFile());
        mailSender.send(mimeMessage);
    }
}

测试类

public class MailTest {
    public static void main(String[] args){
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        /*测试简单邮件*/
        Mail mail = (Mail)context.getBean("mail");
        mail.send();
        
        /*测试带附件的邮件*/
        try{
            MailWithAttachment mailWithAttach = (MailWithAttachment)context.getBean("mailWithAttachment");
            mailWithAttach.send();
        }catch(Exception e){
            System.out.print(e.toString());
        }
        
        /*测试HTML格式的邮件*/
        try{
            MailWithHTML mailWithHtml = (MailWithHTML)context.getBean("mailWithHtml");
            mailWithHtml.send();
        }catch(Exception e){
            System.out.print(e.toString());
        }
    }
}

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