下面是发送邮件SendMail.java(含附件)代码:
//SendMail.java
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
import javax.activation.*;
public class SendMail {
public static void send(String customMailBoxAddress,String username,String password,String serverMailBoxAddress,String subject,String attachmentPath,String attachmentName) {
//这里面使用新浪作为发送邮件的邮件服务器,其他的smtp服务器可以到相关网站上查到。
String host = "smtp.sina.com.cn";
//发送方邮箱地址(如BlogJava2006@blog.com.cn.)
String from = customMailBoxAddress;
//收件人邮箱地址
String to = serverMailBoxAddress;
//发送者的邮箱用户名
String user = username;
//发送者的邮箱密码
String ps = password;
Properties props = new Properties();
//设置发送邮件的邮件服务器的属性(这里使用新浪的smtp服务器)
props.put("mail.smtp.host", host);
//需要经过授权,也就是有户名和密码的校验,这样才能通过验证(一定要有//这一条)
props.put("mail.smtp.auth", "true");
//用刚刚设置好的props对象构建一个session
Session session = Session.getDefaultInstance(props);
//有了这句便可以在发送邮件的过程中在console处显示过程信息,供调试使
//用(有的时候网络连通性不够好,发送邮件可能会有延迟,在这里面会有所//提示,所以最好是加上这句,避免盲目的等待)
session.setDebug(true);
//定义消息对象
MimeMessage message = new MimeMessage(session);
try{
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
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
Multipart multipart = new MimeMultipart();
//设置邮件的文本内容
BodyPart contentPart = new MimeBodyPart();
contentPart.setText("邮件的具体内容在此");
multipart. addBodyPart(contentPart);
//添加附件
BodyPart attachmentPart= new MimeBodyPart();
DataSource source = new FileDataSource(attachmentPath);
attachmentPart.setDataHandler(new DataHandler(source));
//注意:下面定义的enc对象用来处理中文附件名,否则名称是中文的附//件在邮箱里面显示的会是乱码,
sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
messageBodyPart.setFileName("=?GBK?B?"+enc.encode(attachmentName.getBytes())+"?=");
multipart.addBodyPart(messageBodyPart);
//将multipart对象放到message中
message.setContent(multipart);
//发送邮件
message.saveChanges();
Transport transport = session.getTransport("smtp");
transport.connect(host, username, password);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}catch(Exception e){
e.printStackTrace();
}
}
}
ReceiveMail.java代码如下:
import javax.mail.*;
import java.util.*;
import java.io.*;
public class ReceiveMail {
//处理任何一种邮件都需要的方法
private void handle(Message msg) throws Exception {
System.out.println("邮件主题:" + msg.getSubject());
System.out.println("邮件作者:" + msg.getFrom()[0].toString());
System.out.println("发送日期:" + msg.getSentDate());
}
//处理文本邮件
private void handleText(Message msg) throws Exception {
this.handle(msg);
System.out.println("邮件内容:"+msg.getContent());
}
//处理Multipart邮件,包括了保存附件的功能
private static void handleMultipart(Message msg) throws Exception {
String disposition;
BodyPart part;
Multipart mp = (Multipart) msg.getContent();
//Miltipart的数量,用于除了多个part,比如多个附件
int mpCount = mp.getCount();
for (int m = 0; m < mpCount; m++) {
this.handle(msg);
part = mp.getBodyPart(m);
disposition = part.getDisposition();
//判断是否有附件
if (disposition != null && disposition.equals(Part.ATTACHMENT))
{
//这个方法负责保存附件
saveAttach(part);
} else {
//不是附件,就只显示文本内容
System.out.println(part.getContent());
}
}
}
private static void saveAttach(BodyPart part) throws Exception {
//得到未经处理的附件名字
String temp = part.getFileName();
//除去发送邮件时,对中文附件名编码的头和尾,得到正确的附件名
//(请参考发送邮件程序SendMail的附件名编码部分)
String s = temp.substring(8, temp.indexOf("?="));
//文件名经过了base64编码,下面是解码
String fileName = base64Decoder(s);
System.out.println("有附件:" + fileName);
InputStream in = part.getInputStream();
FileOutputStream writer = new FileOutputStream(new File(
"保存附件的本地路径"+ "\\"+fileName));
byte[] content = new byte[255];
int read = 0;
while ((read = in.read(content)) != -1) {
writer.write(content);
}
writer.close();
in.close();
}
//base64解码
private static String base64Decoder(String s) throws Exception {
sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
byte[] b = decoder.decodeBuffer(s);
return (new String(b));
}
public static void receive(String receiverMailBoxAddress, String username,String password) {
//本人用的是yahoo邮箱,故接受邮件使用yahoo的pop3邮件服务器
String host = "pop.mail.yahoo.com.cn";
try {
//连接到邮件服务器并获得邮件
Properties prop = new Properties();
prop.put("mail.pop3.host", host);
Session session = Session.getDefaultInstance(prop);
Store store = session.getStore("pop3");
store.connect(host, username, password);
Folder inbox = store.getDefaultFolder().getFolder("INBOX");
//设置inbox对象属性为可读写,这样可以控制在读完邮件后直接删除该附件
inbox.open(Folder.READ_WRITE);
Message[] msg = inbox.getMessages();
FetchProfile profile = new FetchProfile();
profile.add(FetchProfile.Item.ENVELOPE);
inbox.fetch(msg, profile);
for (int i = 0; i < msg.length; i++) {
//标记此邮件的flag标志对象的DELETED位为true,可以在读完邮件后直接删除该附件,具体执行时间是在调用
//inbox.close()方法的时候
msg[i].setFlag(Flags.Flag.DELETED, true);
handleMultipart(msg[i]);
System.out.println("****************************");
}
if (inbox != null) {
//参数为true表明阅读完此邮件后将其删除,更多的属性请参考mail.jar的API
inbox.close(true);
}
if (store != null) {
store.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
posted on 2006-04-24 13:21
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