springboot java代码实现邮件通知

通过代码实现发送邮件通知到相关负责人，实现模板群发或单对单发送 ，本文旨在实现功能，所以创建文件顺序有些不认真

 

包结构：

1:首先创建一个config类 MailConfig 

import java.io.IOException; import java.io.InputStream; import java.util.Properties; import org.springframework.stereotype.Component; /** * 邮件读取配置类 * @author * <p>2019年5月9日 上午11:13:51</p> * @see * @version 1.0 */ @Component public class MailConfig { private static final String PROPERTIES_DEFAULT = "mailConfig.properties"; public static String host; public static Integer port; public static String userName; public static String passWord; public static String emailForm; public static String timeout; public static String personal; public static Properties properties; static{ init(); } /** * 初始化 */ private static void init() { properties = new Properties(); try{ InputStream inputStream = MailConfig.class.getClassLoader().getResourceAsStream(PROPERTIES_DEFAULT); properties.load(inputStream); inputStream.close(); host = properties.getProperty("mailHost"); port = Integer.parseInt(properties.getProperty("mailPort")); userName = properties.getProperty("mailUsername"); passWord = properties.getProperty("mailPassword"); emailForm = properties.getProperty("mailUsername"); timeout = properties.getProperty("mailTimeout"); //发送人 personal = properties.getProperty("mailSender"); } catch(IOException e){ e.printStackTrace(); } } }

 

2: 需要写一个配置类 mailConfig.properties

里面的*号替换成自己的信息

mailConfig.properties #服务器 mailHost=smtp.163.com #端口号 mailPort=25 #邮箱账号(使用者改成自己的) mailUsername=*****@163.com #邮箱密码(使用者改成自己的) mailPassword=***** #时间延迟 mailTimeout=25000 # 邮件发送人信息 mailSender = ******

 

3:创建一个实体对象传参 MailEntity  （本文按要求写成了一个小项目，不需要的直接传参也可以）

import java.io.Serializable; /** * 邮件对象 * @author * <p>2019年5月9日 下午5:32:04</p> * @see * @version 1.0 */ public class MailEntity implements Serializable{ /** * {用一句话描述这个变量表示什么} */ private static final long serialVersionUID = 4542302475678065294L; /*多个邮箱可用 private String [] users;*/ private String users; private String title; private String content; public String getUsers() { return users; } public void setUsers(String users) { this.users = users; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + ((content == null) ? 0 : content.hashCode()); result = prime * result + ((title == null) ? 0 : title.hashCode()); result = prime * result + ((users == null) ? 0 : users.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj){ return true; } if (obj == null){ return false; } if (getClass() != obj.getClass()){ return false; } MailEntity other = (MailEntity) obj; if (content == null) { if (other.content != null){ return false; } } else if (!content.equals(other.content)){ return false; } if (title == null) { if (other.title != null){ return false; } } else if (!title.equals(other.title)){ return false; } if (users == null) { if (other.users != null){ return false; } } else if (!users.equals(other.users)){ return false; } return true; } @Override public String toString() { return "MailEntity [users=" + users + ", title=" + title + ", content=" + content + "]"; } }

 

4:将配置使用起来，创建一个util工具   MailUtil  （这里的to  多个地址用String[] 接收）

import java.io.UnsupportedEncodingException; import java.util.Properties; import javax.mail.MessagingException; import javax.mail.internet.MimeMessage; import org.springframework.mail.javamail.JavaMailSenderImpl; import org.springframework.mail.javamail.MimeMessageHelper; import com.mozi.dap.mail.config.MailConfig; public class MailUtil { private static final String HOST = MailConfig.host; private static final Integer PORT = MailConfig.port; private static final String USERNAME = MailConfig.userName; private static final String PASSWORD = MailConfig.passWord; private static final String EMAILFORM = MailConfig.emailForm; private static final String TIMEOUT = MailConfig.timeout; private static final String PERSONAL = MailConfig.personal; private static JavaMailSenderImpl mailSender = createMailSender(); /** * 邮件发送器 * * @return 配置好的工具 */ private static JavaMailSenderImpl createMailSender() { JavaMailSenderImpl sender = new JavaMailSenderImpl(); sender.setHost(HOST); sender.setPort(PORT); sender.setUsername(USERNAME); sender.setPassword(PASSWORD); sender.setDefaultEncoding("Utf-8"); Properties p = new Properties(); p.setProperty("mail.smtp.timeout", TIMEOUT); p.setProperty("mail.smtp.auth", "false"); sender.setJavaMailProperties(p); return sender; } /** * 发送邮件 * * @param to 接受人 多个邮箱 String[] to 单个String to * @param subject 主题 * @param html 发送内容 * @throws MessagingException 异常 * @throws UnsupportedEncodingException 异常 */ public static void sendMail(String to, String subject, String html) throws MessagingException,UnsupportedEncodingException { MimeMessage mimeMessage = mailSender.createMimeMessage(); // 设置utf-8或GBK编码，否则邮件会有乱码 MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8"); messageHelper.setFrom(EMAILFORM, PERSONAL); messageHelper.setTo(to); messageHelper.setSubject(subject); messageHelper.setText(html, true); mailSender.send(mimeMessage); } }

 5:写个控制层接口用来触发... MailController   （这里参数用@RequestBody接收是由于我其他项目调用，不需要的自己调整，不影响功能）

import java.io.UnsupportedEncodingException; import javax.mail.MessagingException; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; import com.mozi.dap.mail.entity.MailEntity; import com.mozi.dap.mail.util.MailUtil; /** * 邮件发送控制层 * @author * <p>2019年5月9日 下午1:47:25</p> * @see * @version 1.0 */ @Controller @RequestMapping("mail/v1.0") public class MailController { /** * 邮件发送 * @param users 接受邮箱，可多个 * @param title 标题 * @param content 邮件内容 */ @RequestMapping(value="/sendMail",method = RequestMethod.POST) @ResponseBody public void sendMail( @RequestBody MailEntity mailEntity){ try { MailUtil.sendMail(mailEntity.getUsers(), mailEntity.getTitle(), mailEntity.getContent()); } catch (MessagingException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } }

 

6:想要使用上述的内容，还需要关键的jar包依赖，我换了好几个，目前使用的是以下俩个jar依赖，第一个应该大家都没有问题，私服里通常都有，第二个没有的话自己下载一个吧，2.1.3  或2.1.6都没问题，如果还有Impl引入报错，我查到的问题是jar冲突或者是springframework里的哪个东西是父级依赖，那么参考下面我自己用的pom吧，自己调整，不要笑，不要恼，本人小白怕误导。

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

 ps:还有问题请看这里

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <packaging>jar</packaging> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.mozi.dap</groupId> <artifactId>dap-mailservice</artifactId> <version>0.0.1</version> <name>dap-mailservice</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId> </dependency> <dependency> <groupId>com.sun.mail</groupId> <artifactId>javax.mail</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build> </project>

7:调用路径后邮件接收结果 (邮件内容我是在另一个服务直接拼接的，如需使用定义格式，内容赋值时，内容中拼接html标签)

以上内容可以自己改造，希望对大家有所帮助