发送邮件怎么添加附件

Q1:怎样在要发送的电子邮件里添加附件啊?
Q2:android发送电子邮件时添加多个附件怎么实现
Q3:java 代码发邮件怎么添加附件
Q4:iphone发送邮件怎样添加附件
Q5:Win10里自带的电子邮件怎么发带附件的邮件？
Q6:如何在要发的邮件中添加附件
Q7:用手机发电子邮件，怎么添加附件

Q3：java 代码发邮件怎么添加附件

实现java发送邮件的过程大体有以下几步：

准备一个properties文件，该文件中存放SMTP服务器地址等参数。

利用properties创建一个Session对象

利用Session创建Message对象，然后设置邮件主题和正文

利用Transport对象发送邮件

需要的jar有2个：activation.jar和mail.jar发送附件，需要用到Multipart对象。

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130importjava.io.File;importjava.io.IOException;importjava.io.InputStream;importjava.util.Properties;importjavax.activation.DataHandler;importjavax.activation.DataSource;importjavax.activation.FileDataSource;importjavax.mail.BodyPart;importjavax.mail.Message;importjavax.mail.MessagingException;importjavax.mail.Multipart;importjavax.mail.Session;importjavax.mail.Transport;importjavax.mail.internet.InternetAddress;importjavax.mail.internet.MimeBodyPart;importjavax.mail.internet.MimeMessage;importjavax.mail.internet.MimeMultipart;importjavax.mail.internet.MimeUtility;publicclassJavaMailWithAttachment{privateMimeMessagemessage;privateSessionsession;privateTransporttransport;privateStringmailHost="";privateStringsender_username="";privateStringsender_password="";privatePropertiesproperties=newProperties();/**初始化方法*/publicJavaMailWithAttachment(booleandebug){InputStreamin=JavaMailWithAttachment.class.getResourceAsStream("MailServer.properties");try{properties.load(in);this.mailHost=properties.getProperty("mail.smtp.host");this.sender_username=properties.getProperty("mail.sender.username");this.sender_password=properties.getProperty("mail.sender.password");}catch(IOExceptione){e.printStackTrace();}session=Session.getInstance(properties);session.setDebug(debug);//开启后有调试信息message=newMimeMessage(session);}/***发送邮件**@paramsubject*邮件主题*@paramsendHtml*邮件内容*@paramreceiveUser*收件人地址*@paramattachment*附件*/publicvoiddoSendHtmlEmail(Stringsubject,StringsendHtml,StringreceiveUser,Fileattachment){try{//发件人InternetAddressfrom=newInternetAddress(sender_username);message.setFrom(from);//收件人InternetAddressto=newInternetAddress(receiveUser);message.setRecipient(Message.RecipientType.TO,to);//邮件主题message.setSubject(subject);//向multipart对象中添加邮件的各个部分内容，包括文本内容和附件Multipartmultipart=newMimeMultipart();//添加邮件正文BodyPartcontentPart=newMimeBodyPart();contentPart.setContent(sendHtml,"text/html;charset=UTF-8");multipart.addBodyPart(contentPart);//添加附件的内容if(attachment!=null){BodyPartattachmentBodyPart=newMimeBodyPart();DataSourcesource=newFileDataSource(attachment);attachmentBodyPart.setDataHandler(newDataHandler(source));//网上流传的解决文件名乱码的方法，其实用MimeUtility.encodeWord就可以很方便的搞定//这里很重要，通过下面的Base64编码的转换可以保证你的中文附件标题名在发送时不会变成乱码//sun.misc.BASE64Encoderenc=newsun.misc.BASE64Encoder();//messageBodyPart.setFileName("=?GBK?B?"+enc.encode(attachment.getName().getBytes())+"?=");//MimeUtility.encodeWord可以避免文件名乱码attachmentBodyPart.setFileName(MimeUtility.encodeWord(attachment.getName()));multipart.addBodyPart(attachmentBodyPart);}//将multipart对象放到message中message.setContent(multipart);//保存邮件message.saveChanges();transport=session.getTransport("smtp");//smtp验证，就是你用来发邮件的邮箱用户名密码transport.connect(mailHost,sender_username,sender_password);//发送transport.sendMessage(message,message.getAllRecipients());System.out.println("sendsuccess!");}catch(Exceptione){e.printStackTrace();}finally{if(transport!=null){try{transport.close();}catch(MessagingExceptione){e.printStackTrace();}}}}publicstaticvoidmain(String[]args){JavaMailWithAttachmentse=newJavaMailWithAttachment(true);Fileaffix=newFile("c:\测试-test.txt");se.doSendHtmlEmail("邮件主题","邮件内容","xxx@XXX.com",affix);//}}