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实现邮件发送：简单邮件、附件邮件、嵌入资源的邮件、模板邮件
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‎Chapter4-5-1/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.didispace</groupId>
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<artifactId>Chapter4-5-1</artifactId>
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<version>1.0.0</version>
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<packaging>jar</packaging>
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<name>Chapter4-5-1</name>
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<description>Spring Boot project</description>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>1.3.2.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-mail</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-velocity</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎Chapter4-5-1/src/main/java/com/didispace/Application.java

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package com.didispace;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class Application {
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public static void main(String[] args) {
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SpringApplication.run(Application.class, args);
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}
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}

‎Chapter4-5-1/src/main/resources/application.properties

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spring.mail.host=smtp.qq.com
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spring.mail.username=username@qq.com
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spring.mail.password=password
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spring.mail.properties.mail.smtp.auth=true
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spring.mail.properties.mail.smtp.starttls.enable=true
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spring.mail.properties.mail.smtp.starttls.required=true

‎Chapter4-5-1/src/main/resources/templates/template.vm

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<html>
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<body>
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<h3>你好， ${username}, 这是一封模板邮件!</h3>
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</body>
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</html>

‎Chapter4-5-1/src/test/java/com/didispace/ApplicationTests.java

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package com.didispace;
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import org.apache.commons.collections.map.HashedMap;
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import org.apache.velocity.app.VelocityEngine;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.SpringApplicationConfiguration;
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import org.springframework.core.io.FileSystemResource;
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import org.springframework.mail.SimpleMailMessage;
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import org.springframework.mail.javamail.JavaMailSender;
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import org.springframework.mail.javamail.MimeMessageHelper;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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import org.springframework.ui.velocity.VelocityEngineUtils;
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import javax.mail.internet.MimeMessage;
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import java.io.File;
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import java.util.Map;
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@RunWith(SpringJUnit4ClassRunner.class)
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@SpringApplicationConfiguration(classes = Application.class)
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public class ApplicationTests {
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@Autowired
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private JavaMailSender mailSender;
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@Autowired
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private VelocityEngine velocityEngine;
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@Test
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public void sendSimpleMail() throws Exception {
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SimpleMailMessage message = new SimpleMailMessage();
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message.setFrom("dyc87112@qq.com");
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message.setTo("dyc87112@qq.com");
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message.setSubject("主题：简单邮件");
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message.setText("测试邮件内容");
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mailSender.send(message);
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}
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@Test
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public void sendAttachmentsMail() throws Exception {
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MimeMessage mimeMessage = mailSender.createMimeMessage();
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MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
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helper.setFrom("dyc87112@qq.com");
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helper.setTo("dyc87112@qq.com");
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helper.setSubject("主题：有附件");
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helper.setText("有附件的邮件");
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FileSystemResource file = new FileSystemResource(new File("weixin.jpg"));
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helper.addAttachment("附件-1.jpg", file);
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helper.addAttachment("附件-2.jpg", file);
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mailSender.send(mimeMessage);
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}
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@Test
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public void sendInlineMail() throws Exception {
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MimeMessage mimeMessage = mailSender.createMimeMessage();
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MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
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helper.setFrom("dyc87112@qq.com");
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helper.setTo("dyc87112@qq.com");
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helper.setSubject("主题：嵌入静态资源");
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helper.setText("<html><body><img src=\"cid:weixin\" ></body></html>", true);
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FileSystemResource file = new FileSystemResource(new File("weixin.jpg"));
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helper.addInline("weixin", file);
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mailSender.send(mimeMessage);
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}
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@Test
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public void sendTemplateMail() throws Exception {
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MimeMessage mimeMessage = mailSender.createMimeMessage();
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MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
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helper.setFrom("dyc87112@qq.com");
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helper.setTo("dyc87112@qq.com");
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helper.setSubject("主题：模板邮件");
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Map<String, Object> model = new HashedMap();
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model.put("username", "didi");
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String text = VelocityEngineUtils.mergeTemplateIntoString(
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velocityEngine, "template.vm", "UTF-8", model);
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helper.setText(text, true);
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mailSender.send(mimeMessage);
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}
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}

‎Chapter4-5-1/weixin.jpg

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