Spring Boot 揭祕與實戰（七）實用技術篇 - Java Mail 發送郵件

時間 2019-11-30

標籤 spring boot 揭祕實戰實用技術 java mail 發送郵件欄目 Spring 简体版

原文原文鏈接

文章目錄html

Spring 對 Java Mail 有很好的支持。所以，Spring Boot 也提供了自動配置的支持。java

Spring Boot 集成 Java Mail

Spring Boot 中使用 Java Mail 很是簡單方便。修改 pom 文件，添加依賴。git

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>

在 src/main/resources/application.properties 中配置郵件信息github

#email
spring.mail.host=smtp.163.com
spring.mail.username=請輸入用戶名
spring.mail.password=請輸入密碼
spring.mail.port=25
spring.mail.protocol=smtp
spring.mail.default-encoding=UTF-8

單元測試

咱們經過編寫單元測試用例，測試 Java Mail 是否正常工做。值得注意的是，郵件包括幾種類型：簡單文本的郵件、 HTML 文本的郵件、內嵌圖片的郵件、包含附件的郵件。spring

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(WebMain.class)
public class SpringMailTest {
@Autowired
private JavaMailSenderImpl mailSender;
/**
* 發送包含簡單文本的郵件
*/
@Test
public void sendTxtMail() {
SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
// 設置收件人，寄件人
simpleMailMessage.setTo(new String[] {"lianggzone@163.com"});
simpleMailMessage.setFrom("lianglevel@163.com");
simpleMailMessage.setSubject("Spring Boot Mail 郵件測試【文本】");
simpleMailMessage.setText("這裏是一段簡單文本。");
// 發送郵件
mailSender.send(simpleMailMessage);
System.out.println("郵件已發送");
}
/**
* 發送包含HTML文本的郵件
* @throws Exception
*/
@Test
public void sendHtmlMail() throws Exception {
MimeMessage mimeMessage = mailSender.createMimeMessage();
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage);
mimeMessageHelper.setTo("lianggzone@163.com");
mimeMessageHelper.setFrom("lianglevel@163.com");
mimeMessageHelper.setSubject("Spring Boot Mail 郵件測試【HTML】");
StringBuilder sb = new StringBuilder();
sb.append("<html><head></head>");
sb.append("<body><h1>spring 郵件測試</h1><p>hello!this is spring mail test。</p></body>");
sb.append("</html>");
// 啓用html
mimeMessageHelper.setText(sb.toString(), true);
// 發送郵件
mailSender.send(mimeMessage);
System.out.println("郵件已發送");
}
/**
* 發送包含內嵌圖片的郵件
* @throws Exception
*/
@Test
public void sendAttachedImageMail() throws Exception {
MimeMessage mimeMessage = mailSender.createMimeMessage();
// multipart模式
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true);
mimeMessageHelper.setTo("lianggzone@163.com");
mimeMessageHelper.setFrom("lianglevel@163.com");
mimeMessageHelper.setSubject("Spring Boot Mail 郵件測試【圖片】");
StringBuilder sb = new StringBuilder();
sb.append("<html><head></head>");
sb.append("<body><h1>spring 郵件測試</h1><p>hello!this is spring mail test。</p>");
// cid爲固定寫法，imageId指定一個標識
sb.append("<img src=\"cid:imageId\"/></body>");
sb.append("</html>");
// 啓用html
mimeMessageHelper.setText(sb.toString(), true);
// 設置imageId
FileSystemResource img = new FileSystemResource(new File("D:/images/01.jpg"));
mimeMessageHelper.addInline("imageId", img);
// 發送郵件
mailSender.send(mimeMessage);
System.out.println("郵件已發送");
}
/**
* 發送包含附件的郵件
* @throws Exception
*/
@Test
public void sendAttendedFileMail() throws Exception {
MimeMessage mimeMessage = mailSender.createMimeMessage();
// multipart模式
MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true, "utf-8");
mimeMessageHelper.setTo("lianggzone@163.com");
mimeMessageHelper.setFrom("lianglevel@163.com");
mimeMessageHelper.setSubject("Spring Boot Mail 郵件測試【附件】");
StringBuilder sb = new StringBuilder();
sb.append("<html><head></head>");
sb.append("<body><h1>spring 郵件測試</h1><p>hello!this is spring mail test。</p></body>");
sb.append("</html>");
// 啓用html
mimeMessageHelper.setText(sb.toString(), true);
// 設置附件
FileSystemResource img = new FileSystemResource(new File("D:/images/01.jpg"));
mimeMessageHelper.addAttachment("image.jpg", img);
// 發送郵件
mailSender.send(mimeMessage);
System.out.println("郵件已發送");
}
}