javamail附件乱码

1. 关于javamail读取中文路径和文件名乱码的问题

你的这行代码attachName=new String(attachName.getBytes("gb2312"),"ISO8859-1");应该修改成attachName=new String(attachName.getBytes("ISO8859-1"),"gb2312");还有就是邮件中文乱码问题。在界面传递时，中文通过一定编码格式编码后在传给另外一个界面，接收界面如果要正确的显示中文，应该正确的解码。可以使用jdk1.6提供MimeUtility类。将 FileDataSource fds=new FileDataSource(filename);修改为：
FileDataSource fds=new FileDataSource(MimeUtility.encodeText(filename));这样的话应该能解决附件乱码问题。这只是自己肤浅的认识，可能有些地方还有漏洞，往高手看后指点！！
=====================================================================
下面是敝人一段中文处理的代码，可以做参考
public class Demo3
{
/**
* 复杂邮件含附件+中文附件名_回信地址_友好名称
* @param args
*/
public static void main(String[] args) throws Exception
{

//配置环境
Properties pros = new Properties();
pros.setProperty("mail.smtp.auth", "true");
pros.setProperty("mail.transport.protocol", "smtp");
Session session = Session.getInstance(pros);
session.setDebug(true);
//创建卫星
Message msg = new MimeMessage(session);
//设置msg的一些信息--发件人、主题、内容..
msg.setFrom(new InternetAddress("\""+MimeUtility.encodeText("超越")+"\" <[email protected]>"));
msg.setRecipients(RecipientType.TO,
InternetAddress.parse(MimeUtility.encodeText("毕老师")+" <[email protected]>,"+MimeUtility.encodeText("王老师")+" <[email protected]>")
);
msg.setReplyTo(InternetAddress.parse("[email protected]"));

MimeMultipart bodyMultipart = new MimeMultipart("mixed");
msg.setContent(bodyMultipart);

MimeBodyPart appurt1 = new MimeBodyPart();
MimeBodyPart appurt2 = new MimeBodyPart();
MimeBodyPart contentPart = new MimeBodyPart();

bodyMultipart.addBodyPart(appurt1);
bodyMultipart.addBodyPart(appurt2);
bodyMultipart.addBodyPart(contentPart);

appurt1.setDataHandler(new DataHandler(new FileDataSource("")));
appurt1.setFileName("");//重要

appurt2.setDataHandler(new DataHandler(new FileDataSource("")));
appurt2.setFileName("");

MimeMultipart contentMultipart = new MimeMultipart("related");
contentPart.setContent(contentMultipart);

MimeBodyPart picPart = new MimeBodyPart();
MimeBodyPart htmlPart = new MimeBodyPart();
contentMultipart.addBodyPart(picPart);
contentMultipart.addBodyPart(htmlPart);

picPart.setDataHandler(new DataHandler(new FileDataSource("")));
picPart.setHeader("Content-Location", "www.sohu.com/log.jpg");
htmlPart.setText("图片<img src=www.sohu.com/log.jpg/>", "text/html;charset=gbk");

msg.saveChanges();

//创建火箭
Transport transport = session.getTransport();
transport.connect("smtp.sina.com", 25, "[email protected]", "*****");

//火箭发送卫星
transport.sendMessage(msg, InternetAddress.parse("aa,aaa"));

transport.close();
}
}

2. 有关javamail的邮件附件的路径和文件名中文乱码问题

你可以试试javamail包中自复带的编码解码制方法
import javax.mail.internet.MimeUtility; 包
// 解决文件名的中文问题
MimeUtility.decodeText(“attachment”);
// 解决标题的中文问题
MimeUtility.encodeText(”subject“);
这两个方法应该可以解决你的问题，我就是用的这两个方法

3. Java收发邮件过程中具体的功能是怎么实现的

以qq邮箱为例：


packagemain;

importjava.util.Properties;

importjavax.mail.Authenticator;
importjavax.mail.MessagingException;
importjavax.mail.PasswordAuthentication;
importjavax.mail.Session;
importjavax.mail.Transport;
importjavax.mail.internet.InternetAddress;
importjavax.mail.internet.MimeMessage;
importjavax.mail.internet.MimeMessage.RecipientType;


publicclassSendMessageService{
	;
	privateMimeMessagemessage;
	privatePropertiesprops=newProperties();
	publicstaticStringuserName;
	publicstaticStringpassword;
	;
	;

	SendMessageService(){
		{
			props.put("mail.smtp.auth","true");
			props.put("mail.smtp.host","smtp.qq.com");
			props.put("mail.smtp.port","587");
			props.put("mail.user","[email protected]");//发送出去邮箱，
			props.put("mail.password","在腾讯邮箱申请的SMTP服务码");

			//用户名、密码
			userName=props.getProperty("mail.user");
			password=props.getProperty("mail.password");

			//构建授权信息，用于进行SMTP进行身份验证
			Authenticatorauthenticator=newAuthenticator(){
				(){
					(userName,password);
				}
			};
			mailSession=Session.getInstance(props,authenticator);
			message=newMimeMessage(mailSession);
			InternetAddressform=newInternetAddress(props.getProperty("mail.user"));
			message.setFrom(form);
		}catch(MessagingExceptione){
			//TODOAuto-generatedcatchblock
			e.printStackTrace();
		}

	}

	/**参数，发送的邮件的标题，邮件的内容，目标邮箱地址**/
	publicvoidsendEm(Stringstr,Stringcont,Stringmailbox){
		try{
			//添加目标邮箱地址
			to=newInternetAddress(mailbox);
			message.setRecipient(RecipientType.TO,to);
			//设置邮件标题
			message.setSubject(str);
			//设置邮件的内容体
			message.setContent(cont,"text/html;charset=UTF-8");
			Transport.send(message);
		}catch(MessagingExceptione){
			//TODOAuto-generatedcatchblock
			e.printStackTrace();
		}
	}

	publicstaticvoidmain(String[]args){
		newSendMessageService().sendEm("hahhahahhaha","哈哈哈哈哈哈","[email protected]");
	}
}

申请/SMTP服务 ，先进入邮箱，点击设置，账户设置，翻到下面的开启第二个IMAP/SMTP服务 ，会得到一个SMTP码，记住它，

4. 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。

importjava.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;

{
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","[email protected]",affix);//
}
}

5. javamail使用IMAP协议接受QQ邮件不成功,大虾们帮忙解决下~

...IMAP8等邮件协议,支持OviShare、抄OviContacts、OviMail 输入法 英文输入法,中文输入法,笔划中文输入法,拼... 这两款不支持后台，但是你可以去别的手机店里找人帮刷机（修改系统），就可以后台QQ了，我的8881C现在就正...