在不安装SMTP服务器的情况下测试Greenmail

Question

我正在尝试使用Greenmail来测试我的localhost上的电子邮件功能。 问题是我没有安装SMTP服务器，并且认为安装一个SMTP服务器过度。 我的期望是应该有一个免费的库，允许我保持我的发送邮件代码相同，但不是真正发送电子邮件到SMTP服务器，发送到我的本地机器，以便我可以检索它们（为了单位）测试）。

我曾经使用Grails开发时曾使用Greenmail，而且体验很棒。 但我找不到类似于Spring Framework的东西。 在Greenmail页面中，它说有一个与JBoss捆绑在一起的模拟 SMTP服务器。 但我不想运行JBoss，因为目前我的Web应用程序正在Tomcat上运行。

Tomcat有没有类似的服务？ 或者有没有更好的方法将测试电子邮件发送到localhost，我可以在哪里检索发送的电子邮件？

更新 ：

我尝试使用Ralph的方法，但它仍然产生相同的异常：

[SimpleAsyncTaskExecutor-1] 2012-03-13 10:19:39,475 - ERROR: com.test.my.service.emailing.impl.EmailServiceImpl - Mail server connection failed; nested exception is javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 3025;
  nested exception is:
    java.net.ConnectException: Connection refused: connect. Failed messages: javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 3025;
  nested exception is:
    java.net.ConnectException: Connection refused: connect
org.springframework.mail.MailSendException: Mail server connection failed; nested exception is javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 3025;
  nested exception is:
    java.net.ConnectException: Connection refused: connect. Failed messages: javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 3025;
  nested exception is:
    java.net.ConnectException: Connection refused: connect; message exception details (1) are:
Failed message 1:
javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 3025;
  nested exception is:
    java.net.ConnectException: Connection refused: connect
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1391)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412)
    at javax.mail.Service.connect(Service.java:288)
    at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:389)
    at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:340)
    at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:336)
    at com.test.my.service.emailing.impl.EmailServiceImpl.test(EmailServiceImpl.java:388)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.interceptor.AsyncExecutionInterceptor$1.call(AsyncExecutionInterceptor.java:80)
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(Unknown Source)
    at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:233)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1359)
    ... 19 more

Answer 1

您可以将Greenmail与任何Java程序一起使用，无论它是否使用Spring。 你不需要任何Spring特定的东西。

它运行某种进程邮件服务器。

import com.icegreen.greenmail.util.GreenMail;
import com.icegreen.greenmail.util.GreenMailUtil;
import com.icegreen.greenmail.util.ServerSetupTest; ...

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("ApplicationContext-Greenmail.xml")
public class EmailServiceIntegrationTest {

    /** Class under test */
    @Resource
    private EmailService emailService;

    private GreenMail greenMail;

    @Before
    public void startMailServer() {
        greenMail = new GreenMail(ServerSetupTest.SMTP);
        greenMail.start();
    }

    @After
    public void stopMailServer() {
        greenMail.stop();
    }

    @Test
    public void testPledgeReminder()
                throws InterruptedException, MessagingException {

        String mailText = "Hallo World";
        String mailSubject = "Hallo";
        String mailTo = "test@excaple.com";

        /** when: sending a mail */
        emailService.send(mailSubject, mailTo, mailText);

        assertTrue(greenMail.waitForIncomingEmail(5000, 1));
        Message[] messages = greenMail.getReceivedMessages();
        assertEquals(1, messages.length);
        assertEquals(mailText, messages[0].getSubject());       
        String body = GreenMailUtil.getBody(messages[0]).replaceAll("=\r?\n", "");
        assertEquals(mailText, body);       
    }

}

重要：使用端口3025

<bean id="javaMailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="javaMailProperties">
        <util:properties>
            <prop key="mail.debug">false</prop>
            <prop key="mail.transport.protocol">smtp</prop>
            <prop key="mail.smtp.port">3025</prop>
            <prop key="mail.smtp.auth">true</prop>
            <prop key="mail.smtp.user">test@mail.extern</prop>
            <prop key="mail.smtp.host">localhost</prop>
            <prop key="mail.smtp.from">test@mail.extern</prop>
        </util:properties>
    </property>
    <property name="username" value="test"/>
    <property name="password" value="xxx"/>
    <property name="defaultEncoding" value="utf8" />
</bean>

然后，此配置将配置Spring JavaMailSender将其邮件发送到由测试代码启动和完成的GreenMail-Server。

Answer 2

编辑（2017年11月）：

Dumbster链接已经死了，github上有一个它的分支https://github.com/kirviq/dumbster

- - 原始信息 - -

看看Dumbster - 我将它用于我的所有单元测试，因为它允许我断言发送的实际电子邮件。

http://quintanasoft.com/dumbster/

Answer 3

在spring测试中做这样的事情对我来说很好：

ServerSetupTest.setPortOffset(<SOME_CUSTOM_PORT>);
testEmailServer = new GreenMail();
testEmailServer.start();

ServerSetupTest类背后的主要思想是创建一个带有用户定义的端口偏移量的ServerSetup进行测试。 有关更多详细信息，请参阅文档 。

Answer 4

尝试手动设置GreenMail服务器的端口，如下所示：

 @Before
public void startMailServer()
    throws Exception
{
    ServerSetup setup = new ServerSetup(3025,"localhost","smtp");
    greenMail = new GreenMail(setup);
    greenMail.start();
}

然后设置您的电子邮件发件人端口与上面相同，注意协议/主机/端口：

email.protocol=smtp
email.host=localhost
email.port=3025
email.username=to@localhost.com
email.password=to@localhost.com
email.auth=true
email.systemEmail=from@localhost.com

使用bean配置：

<bean id="javaMailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
    <property name="protocol" value="${email.protocol}" />
    <property name="host" value="${email.host}" />
    <property name="port" value="${email.port}" />
    <property name="username" value="${email.username}" />
    <property name="password" value="${email.password}" />
    <property name="javaMailProperties">
        <props>
            <prop key="mail.${email.protocol}.auth">${email.auth}</prop>
        </props>
    </property>
</bean>

Answer 5

似乎有人提出了这样的整合： http ： //sourceforge.net/mailarchive/forum.php？thread_name = 45DEB9E3.6090608％40consol.de＆forum_name = greenmail-developers

不知道它是否还在工作......