通过使用Spring Boot RESTful Web服务,您可以发送包含Gmail传输层安全性的电子邮件.在本章中,让我们详细了解如何使用此功能.
首先,我们需要在构建配置文件中添加Spring Boot Starter Mail依赖项.
Maven用户可以将以下依赖项添加到pom.xml文件中.
org.springframework.boot spring-boot-starter-mail
Gradle用户可以在build.gradle文件中添加以下依赖项.
compile('org.springframework.boot:spring-boot-starter-mail')
给出主Spring Boot应用程序类文件的代码低于 :
package com.it1352.emailapp; import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class EmailappApplication { public static void main(String[] args) { SpringApplication.run(EmailappApplication.class, args); }}
您可以编写一个简单的Rest API来发送到Rest Controller类文件中的电子邮件,如图所示.
package com.it1352.emailapp; import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class EmailController { @RequestMapping(value = "/sendemail") public String sendEmail() { return "Email sent successfully"; } }
您可以编写一个方法来发送带有附件的电子邮件.定义mail.smtp属性并使用PasswordAuthentication.
private void sendmail() throws AddressException, MessagingException, IOException { Properties props = new Properties(); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.starttls.enable", "true"); props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.smtp.port", "587"); Session session = Session.getInstance(props, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("it1352@gmail.com", ""); } }); Message msg = new MimeMessage(session); msg.setFrom(new InternetAddress("it1352@gmail.com", false)); msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse("it1352@gmail.com")); msg.setSubject("Tutorials point email"); msg.setContent("Tutorials point email", "text/html"); msg.setSentDate(new Date()); MimeBodyPart messageBodyPart = new MimeBodyPart(); messageBodyPart.setContent("Tutorials point email", "text/html"); Multipart multipart = new MimeMultipart(); multipart.addBodyPart(messageBodyPart); MimeBodyPart attachPart = new MimeBodyPart(); attachPart.attachFile("/var/tmp/image19.png"); multipart.addBodyPart(attachPart); msg.setContent(multipart); Transport.send(msg); }
现在,从Rest API调用上面的sendmail()方法,如图所示 :
@RequestMapping(value = "/sendemail")public String sendEmail() throws AddressException, MessagingException, IOException { sendmail(); return "Email sent successfully"; }
注意 : 在发送电子邮件之前,请关闭Gmail帐户设置中允许安全性较低的应用.
完整的构建配置文件如下所示.
Maven - pom.xml
4.0.0 com.IT屋 emailapp 0.0.1-SNAPSHOT jar emailapp Demo project for Spring Boot org.springframework.boot spring-boot-starter-parent 1.5.9.RELEASE UTF-8 UTF-8 1.8 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-mail org.springframework.boot spring-boot-starter org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin
Gradle - build.gradle
buildscript { ext { springBootVersion = '1.5.9.RELEASE' } repositories { mavenCentral() } dependencies { classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}") }}apply plugin: 'java'apply plugin: 'eclipse'apply plugin: 'org.springframework.boot'group = 'com.it1352'version = '0.0.1-SNAPSHOT'sourceCompatibility = 1.8repositories { mavenCentral()}dependencies { compile('org.springframework.boot:spring-boot-starter-web') compile('org.springframework.boot:spring-boot-starter-mail') testCompile('org.springframework.boot:spring-boot-starter-test')}
现在,你可以创建一个可执行的JAR文件,并运行Spring Bo通过使用下面显示的Maven或Gradle命令进行应用程序 :
对于Maven,您可以使用如下所示的命令 :
mvn clean install
在"BUILD SUCCESS"之后,您可以在目标目录下找到JAR文件.
对于Gradle,您可以使用如下所示的命令 :
gradle clean build
在"BUILD SUCCESSFUL"之后,您可以在build/libs目录下找到JAR文件.
现在,使用命令运行JAR文件给出以下 :
java –jar
您可以看到应用程序已在Tomcat端口8080上启动.
现在从Web浏览器中点击以下URL,您将收到一封电子邮件.
http://localhost:8080/sendemail