发邮件怎么发图片（发邮件怎么发）

1、使用jdk自带的api来实现邮件发送，即JavaMail Api来实现发送，通过里面的Transport.send()发送，其中session用于权限认证，具体实现

用java发邮件，必须要导入新的包

mail.jar – 发邮件的核心包

activation.jar – 对用户和密码加密.

在mail.jar中有三个核心类：

Javax.mail.Session – 是指与邮件服务器会话。整个项目中只要一个就可以了.

Javax.mail.Message（接口） - 准备发送数据信息。

MimeMessage － 可以设置类型的数据信息。

Transport – 它拥有一个方法可以发送Message。

@TestpublicvoidsendMail()throwsException{//1,声明properties对象放信息Properties props =newProperties();//设置连接哪一台服务器props.setProperty("mail.host","smtp.163.com");//设置是否认证：props.setProperty("mail.smtp.auth","true");//2，声明用户名和密码Authenticator auth =newAuthenticator(){//返回用户名和密码对象@OverrideprotectedPasswordAuthenticationgetPasswordAuthentication(){ PasswordAuthentication pa =newPasswordAuthentication("xxxxx@163.com","123456");returnpa; } };//3,获取session对象Session session = Session.getDefaultInstance(props, auth);//设置session为调试模式session.setDebug(true);//4,声明信息MimeMessage mm1 =newMimeMessage(session);//5,设置发件人信息Address form =newInternetAddress("xxxxx@163.com"); mm1.setFrom(form);//6,设置收件人 ,RecipientType:发送，抄送，密送 类型mm1.setRecipient(RecipientType.TO,newInternetAddress("xxx@qq.com"));//mm1.setRecipient(RecipientType.CC, new InternetAddress(""));//抄送//7，设置主题mm1.setSubject("拉面学习通知"); String cont ="请点击 官网新闻查看祝您发财"; mm1.setContent(cont,"text/html;charset=UTF-8");//8，发送Transport.send(mm1); }

其中的mimeType可是text/plain纯文本。

发送附件：

@TestpublicvoidsendMailWithFile()throwsException{ Properties ps =newProperties(); ps.setProperty("mail.host","smtp.163.com"); ps.setProperty("mail.smtp.auth","true"); Authenticator auth =newAuthenticator(){@OverrideprotectedPasswordAuthenticationgetPasswordAuthentication(){returnnewPasswordAuthentication("xxx@163.com","xxx."); } }; Session session = Session.getDefaultInstance(ps, auth); session.setDebug(true); MimeMessage msg =newMimeMessage(session); Address address =newInternetAddress("xxx@163.com"); msg.setFrom(address);//发送给msg.setRecipient(RecipientType.TO,newInternetAddress("xxx@qq.com")); msg.setRecipient(RecipientType.BCC,newInternetAddress("xxx@qq.com"));//密送msg.setRecipient(RecipientType.CC,newInternetAddress("xxx@qq.com"));//抄送msg.setSubject("$激情小视频*免费观看");//声明多部件处理MimeMultipart mm =newMimeMultipart(); MimeBodyPart body1 =newMimeBodyPart();//设置附件DataSource ds1 =newFileDataSource(newFile("./img/a.jpg")); DataHandler dh1 =newDataHandler(ds1); body1.setDataHandler(dh1);//必须设置名称body1.setFileName(MimeUtility.encodeText("美女.jpg")); MimeBodyPart body2 =newMimeBodyPart(); DataSource ds2 =newFileDataSource(newFile("./img/b.jpg")); DataHandler dh2 =newDataHandler(ds2); body2.setDataHandler(dh2); body2.setFileName(MimeUtility.encodeText("美女2.jpg")); MimeBodyPart body3 =newMimeBodyPart(); DataSource ds3 =newFileDataSource(newFile("./img/m.mp3")); DataHandler dh3 =newDataHandler(ds3); body3.setDataHandler(dh3); body3.setFileName(MimeUtility.encodeText("小电影.mp3"));//添加body到mmmm.addBodyPart(body1); mm.addBodyPart(body2); mm.addBodyPart(body3); msg.setContent(mm);//设置发送日期Calendar c = Calendar.getInstance(); c.add(Calendar.DATE, -5); msg.setSentDate(c.getTime());//发送Transport.send(msg); }

可以继续添加MimeBodyPart 来设置正文

MimeBodyPart htmlPart = new MimeBodyPart();String cont = "请点击 官网新闻查看祝您发财";htmlPart.setContent(cont, "text/html;charset=UTF-8");

mm.addBodyPart(htmlPart);

2、通过spring自带的JavaMailSender来实现，JavaMailSender其实就是对JavaMail进行封装而来的，通过javaMailSender.send()发送。具体实现

1. maven依赖在pom.xml中添加如下依赖：

4.3.6.RELEASE

org.springframework

spring-core

${springframework.version}

org.springframework

spring-context

${springframework.version}

org.springframework

spring-context-support

${springframework.version}

org.springframework

spring-beans

${springframework.version}

javax.mail

mail

1.4.72.applicationContext.xmlapplicationContext.xml

3.测试代码importcom.sun.xml.internal.messaging.saaj.packaging.mime.internet.MimeUtility;import org.junit.Test;import org.junit.runner.RunWith;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.core.io.FileSystemResource;importorg.springframework.mail.SimpleMailMessage;importorg.springframework.mail.javamail.JavaMailSender;importorg.springframework.mail.javamail.MimeMessageHelper;importorg.springframework.test.context.ContextConfiguration;importorg.springframework.test.context.junit4.SpringJUnit4ClassRunner;importjavax.mail.internet.MimeMessage;import java.io.File;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = {"classpath:applicationContext.xml"})public class JavaMailSenderTest {@Autowiredprivate JavaMailSender javaMailSender;@Testpublic void testSimpleTextMail(){ //发送普通文本邮件SimpleMailMessage mailMessage = new SimpleMailMessage();mailMessage.setFrom("FX_SKY");// 发送者，可选的mailMessage.setTo("ricky_feng@163.com");//接受者mailMessage.setSubject("测试邮件");//主题mailMessage.setText("Test Email send by javaMailSender!");//邮件内容javaMailSender.send(mailMessage);}@Testpublic void testMimeMail() throws Exception { //发送HTML格式的邮件MimeMessage mimeMessage =javaMailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);helper.setFrom("FX_SKY");helper.setTo("ricky_feng@163.com");helper.setSubject("主题：嵌入静态资源");helper.setText("", true);javaMailSender.send(mimeMessage);}@Testpublic void testMimeInlineMail() throws Exception { //发送HTML格式含图片的邮件MimeMessage mimeMessage =javaMailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);helper.setFrom("FX_SKY");helper.setTo("ricky_feng@163.com");helper.setSubject("主题：嵌入静态资源");helper.setText("", true);FileSystemResource logoFile = new FileSystemResource(new File("logo.jpg"));helper.addInline("logo", logoFile);javaMailSender.send(mimeMessage);}@Testpublic void testAttachmentMail() throws Exception { //发送含附件的邮件MimeMessage mimeMessage =javaMailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);// 第二个参数设置为true，表示允许添加附件helper.setFrom("FX_SKY");helper.setTo("ricky_feng@163.com");helper.setSubject("发送含图片附件的邮件");helper.setText("含有附件的邮件");helper.addAttachment(MimeUtility.encodeText("附件-1.jpg"), new File("E:/attachment1.jpg"));helper.addAttachment(MimeUtility.encodeText("附件-2.jpg"), new File("E:/attachment2.jpg"));javaMailSender.send(mimeMessage);}}模板邮件通常我们使用邮件发送服务的时候，都会有一些固定的场景，比如重置密码、注册确认等，给每个用户发送的内容可能只有小部分是变化的。所以，很多时候我们会使用模板引擎来为各类邮件设置成模板，这样我们只需要在发送时去替换变化部分的参数即可。

Java中常用的模板引擎有FreeMarker和Velocity，下面我们以Velocity为例做演示。

pom.xml 引入velocity 依赖：

org.apache.velocity

velocity

1.7

org.apache.velocity

velocity-tools

2.0

在resources/templates/ 目录下，创建一个模板页面mail.vm：

最后，我们在单元测试中加入发送模板邮件的测试用例，代码如下：@Testpublic void testSendTemplateMail() throws Exception {MimeMessage mimeMessage =mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);helper.setFrom("FX_SKY");helper.setTo("ricky_feng@163.com");helper.setSubject("主题：模板邮件");VelocityContext context = new VelocityContext();context.put("username", "Velocity");context.put("activation_url", "http://www.baidu.com");Template template = ve.getTemplate("templates/mail.vm");StringWriter sw = new StringWriter();template.merge(context, sw);String text = sw.toString();helper.setText(text, true);mailSender.send(mimeMessage);