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讨论JavaEmail,现在遇到了有关问题,请

发布时间： 2012-01-08 22:48:50 作者： rapoo

讨论JavaEmail,现在遇到了问题,请高手帮个忙!谢谢
看了很多网上的贴子,也在Baidu上搜过.
现有两个问题.
一是收邮件时.如果原文件带附件.那么正文部份ContentType,并不是以Text/html开头
而是以.multipart/Alternative.
163及126都是这样,并带有 boundary= "----=_Part_76_1173198205.1187629828559 "
请问是不是除了 自行解释用 boundary进行拆分外,别无解决办法?,附件我是收下来了.但正文部分,一直收到Null


二是发邮件.老是被拒绝..
代码如下.
package asp.email;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Properties;
import javax.mail.BodyPart;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.ContentType;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import asp.BaseHibernateDAO;
import asp.cmp.Employee;
import asp.dao.sys.EmailDAO;
import asp.dao.sys.EmailServerDAO;

/**
* 带口令验证的邮件接收类.
*/
public class EmailReceive extends BaseHibernateDAO {
public EmailReceive() {
}

public boolean receive(Employee emp,String path) {
EmailServerDAO emailServerDao = new EmailServerDAO();
String emailName = emp.getEmpEmail();
String emailPass = emp.getEmpEmailPassword();
String popServer = emailServerDao.getEmailServe(emailName, false);
System.out.println(popServer);
Store store = null;
Folder folder = null;
try {
Properties props = System.getProperties();
Session session = Session.getDefaultInstance(props,
new Email_autherticator(emailName, emailPass));
store = session.getStore( "pop3 ");
store.connect(popServer, null, null);
folder = store.getDefaultFolder();
if (folder == null)
throw new Exception( "No default folder ");
folder = folder.getFolder( "INBOX ");
if (folder == null)
throw new Exception( "No POP3 INBOX ");
folder.open(Folder.READ_WRITE);
Message[] msgs = folder.getMessages();
if (msgs.length > 0) {
for (int msgNum = 0; msgNum < msgs.length; msgNum++) {
printMessage(msgs[msgNum], emp, popServer, emailName, path);// 收邮件
//msgs[msgNum].setFlag(Flags.Flag.DELETED, true);// 收完后,删除邮件
}
return true;
} else {
return false;
}
} catch (Exception ex) {
ex.printStackTrace();
return false;
} finally {
try {
if (folder != null)
folder.close(true);
if (store != null)
store.close();
} catch (Exception ex2) {
ex2.printStackTrace();
return false;
}
}
}

/**
* "printMessage() " 打印方法.


*/
public void printMessage(Message message, Employee emp, String popServer,
String emailName, String mainPath) {
try {
String from = ((InternetAddress) message.getFrom()[0])
.getPersonal();
if (from == null)
from = ((InternetAddress) message.getFrom()[0]).getAddress();// 从邮件服务器获取发件人地址
// System.out.println( "FROM: " + from);
if (from.indexOf( "@ ") < 0) {
String emailExtend = emailName
.substring(emailName.indexOf( "@ "));
from = from + (emailExtend); // 如果返回没有@就把邮件服务器的后缀加上
}
asp.sys.Email email = new asp.sys.Email(); // 创建邮件对象
email.setType(1); // 设置类型（1为收件）
email.setEmailForm(from); // 设置发件人Email
email.setEmailTo(emp.getEmpEmail()); // 设置收件人的地址
email.setToManId( " "); // 设置收件人的ID（也就是本身登陆用户的ID）
email.setReaded(true);// 设定邮件为未读
email.setEmpId(emp.getId());
String subject = message.getSubject(); // 从邮件服务器获取邮件主题
email.setEmailTitle(subject); // 设置邮件主题
Part messagePart = message;
Object content = messagePart.getContent();
if (content instanceof Multipart) // 判断是否为多部分组成文件（有无附件）
{


Multipart mp = (Multipart) message.getContent(); // 得到
// Miltipart的数量,用于除了多个part,比如多个附件
int mpCount = mp.getCount(); // 得到附件个数
System.out.println( "mpCount: "+mpCount);
String path = " ";// 附件名称
for (int i = 0; i <mpCount; i++) {
BodyPart part = mp.getBodyPart(i);
// 得到邮件附件部份
String disposition = part.getDisposition();
// 保存附件
if (disposition != null
&& disposition.equals(Part.ATTACHMENT)) {
// 得到未经处理的附件名字
String temp = part.getFileName();
String fileName = " ";
if (temp.indexOf( "?= ") > = 0)// 表示是中文或其它国文字的附件名
{ // 除去前11位文件的头
fileName = temp.substring(11, temp.indexOf( "?= "));
// 转换
fileName = base64Decoder(fileName);
} else {
// 否则直接生成文件名
fileName = temp;
}
System.out.println( "有附件: " + fileName);
// 得到文件的扩展名
String extendName = fileName.substring(fileName
.length() - 4, fileName.length());
String name = Math.round(Math.random() * 1000000000)
+ extendName;
path = path + "myt_youjian/emailLog/ " + name + "; ";
InputStream in = part.getInputStream();
FileOutputStream writer = new FileOutputStream(
new File(mainPath + "/email/emailLog/ "


+ name));
byte[] bye = new byte[255];
int read = 0;
while ((read = in.read(bye)) != -1) {
writer.write(bye);
}
writer.close();
in.close();
} else {
messagePart = mp.getBodyPart(i);
}
}
email.setEmailAddPath(path);
// 下载到服务器目录并保存下载目录到( "目录 ");
}
String contentType = messagePart.getContentType(); // 邮件类型
System.out.println( "CONTENT: " + contentType);
System.out.println(messagePart.getContent());

if (contentType.startsWith( "text/plain ")
|| contentType.startsWith( "text/html ")) {
InputStream is = messagePart.getInputStream();
BufferedReader reader = new BufferedReader(
new InputStreamReader(is));
String str = " ";
String thisLine = reader.readLine();
while (thisLine != null) {
// System.out.println(thisLine);
str = str + thisLine;
thisLine = reader.readLine();
}
System.out.println( "2222222222222 "+str);
email.setEmailContent(str);
}
else
{

}
EmailDAO emailDao=new EmailDAO();
emailDao.save(email);
// System.out.println( "----------------------------- ");
} catch (Exception ex) {
ex.printStackTrace();
}
}

private static String base64Decoder(String s) throws Exception// base64解码
{
sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
byte[] b = decoder.decodeBuffer(s);
return (new String(b));
}



}




[解决办法]
1.收到带附件的都是多部分的,正文是getBodyPart( "0 ").getContent();

2.一般发信通不过是因为没有加这条props.put( "mail.smtp.auth ", "true ");

ps:你的代码我没有看,不好意思.
[解决办法]
偶也来一个..注释写的很清楚!测试没有问题的.
package com.utils;

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

import sun.misc.BASE64Encoder;

//import com.me.util.*;

public class sendMail {

private MimeMessage mimeMsg; // MIME邮件对象

private Session session; // 邮件会话对象

private Properties props; // 系统属性

private String username = " "; // smtp认证用户名和密码

private String password = " ";

private Multipart mp; // Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象

public sendMail() {

// setSmtpHost(getConfig.mailHost);//如果没有指定邮件服务器,就从getConfig类中获取
createMimeMessage();



}

public sendMail(String smtp) {

setSmtpHost(smtp);
createMimeMessage();

}

/**
* @param hostName
* String
*/
public void setSmtpHost(String hostName) {

System.out.println( "设置系统属性：mail.smtp.host = " + hostName);
if (props == null)
props = System.getProperties(); // 获得系统属性对象

props.put( "mail.smtp.host ", hostName); // 设置SMTP主机

}

/**
* @return boolean
*/
public boolean createMimeMessage() {
try {
System.out.println( "准备获取邮件会话对象！ ");
session = Session.getDefaultInstance(props, null); // 获得邮件会话对象
}

catch (Exception e) {
System.err.println( "获取邮件会话对象时发生错误！ " + e);
return false;
}

System.out.println( "准备创建MIME邮件对象！ ");

try {

mimeMsg = new MimeMessage(session); // 创建MIME邮件对象
mp = new MimeMultipart();

return true;

} catch (Exception e) {

System.err.println( "创建MIME邮件对象失败！ " + e);
return false;
}
}

/**
* @param need
* boolean
*/
public void setNeedAuth(boolean need) {

System.out.println( "设置smtp身份认证：mail.smtp.auth = " + need);
if (props == null)
props = System.getProperties();

if (need) {

props.put( "mail.smtp.auth ", "true ");
} else {

props.put( "mail.smtp.auth ", "false ");
}
}

/**
* @param name
* String
* @param pass
* String
*/
public void setNamePass(String name, String pass) {
username = name;
password = pass;
}

/**
* @param mailSubject
* String
* @return boolean
*/
public boolean setSubject(String mailSubject) {
System.out.println( "设置邮件主题！ ");
try {
mimeMsg.setSubject(mailSubject);
return true;
} catch (Exception e) {
System.err.println( "设置邮件主题发生错误！ ");
return false;
}
}

/**
* @param mailBody
* String
*/
public boolean setBody(String mailBody) {
try {
BodyPart bp = new MimeBodyPart();
bp.setContent(
" <meta http-equiv=Content-Type content=text/html; charset=gb2312> "
+ mailBody, "text/html;charset=GB2312 ");
mp.addBodyPart(bp);

return true;
} catch (Exception e) {
System.err.println( "设置邮件正文时发生错误！ " + e);
return false;
}
}

/**
* @param name
* String
* @param pass
* String
*/
public boolean addFileAffix(String filename) {

System.out.println( "增加邮件附件： " + filename);

try {
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);

bp.setDataHandler(new DataHandler(fileds));
BASE64Encoder enc = new BASE64Encoder();
bp.setFileName( "=?GBK?B? "+enc.encode((fileds.getName()).getBytes())+ "?= ");
//bp.setFileName(fileds.getName());

mp.addBodyPart(bp);

return true;
} catch (Exception e) {
System.err.println( "增加邮件附件： " + filename + "发生错误！ " + e);
return false;
}
}

/**
* @param name
* String


* @param pass
* String
*/
public boolean setFrom(String from) {
System.out.println( "设置发信人！ ");
try {
mimeMsg.setFrom(new InternetAddress(from)); // 设置发信人
return true;
} catch (Exception e) {
return false;
}
}

/**
* @param name
* String
* @param pass
* String
*/
public boolean setTo(String to) {
if (to == null)
return false;

try {
mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress
.parse(to));
return true;
} catch (Exception e) {
return false;
}

}

/**
* @param name
* String
* @param pass
* String
*/
public boolean setCopyTo(String copyto) {
if (copyto == null)
return false;
try {
mimeMsg.setRecipients(Message.RecipientType.CC,
(Address[]) InternetAddress.parse(copyto));
return true;
} catch (Exception e) {
return false;
}
}

/**
* @param name
* String
* @param pass
* String
*/
public boolean sendout() {
try {
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
System.out.println( "正在发送邮件.... ");

Session mailSession = Session.getInstance(props, null);
Transport transport = mailSession.getTransport( "smtp ");
transport.connect((String) props.get( "mail.smtp.host "), username,
password);
transport.sendMessage(mimeMsg, mimeMsg
.getRecipients(Message.RecipientType.TO));

System.out.println( "发送邮件成功！ ");
transport.close();

return true;
} catch (Exception e) {

System.err.println( "邮件发送失败！ " + e);
return false;
}

}

/**
* Just do it as this
*/
public static void main(String[] args) {

// mailbody-> 发送 的邮件 内容
String mailbody = " <meta http-equiv=Content-Type content=text/html; charset=gb2312> "
+ " <div align=center> <table border=1> <tr> <td> 姓名 </td> <td> 性别 </td> </tr> <tr> <td> <font color=blue> 大白菜 </font> </td> <td> 120 </td> </tr> </table> </div> ";

// themail表示要发送到那个smtp上去(转发的地位)
sendMail themail = new sendMail( "smtp.sohu.com ");

// 是否要验证用户身份
themail.setNeedAuth(true);

// 邮件标题
if (themail.setSubject( "大白菜say hello! ") == false)
return;
if (themail.setBody(mailbody) == false)
return;

// 指明发送到那个用户
if (themail.setTo( "asdccn@cmr.com.cn ") == false)
return;

// 显示是谁发来得
if (themail.setFrom( "qinhaijun1@sohu.com ") == false)
return;
// 表明要带的附件
if (themail.addFileAffix( " ") == false)
return;
themail.setNamePass( "rightlinker_test ", "123123 ");

if (themail.sendout() == false)
return;
}
}

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