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public void receiveMail(){
Store store=null;
Folder folder=null;
try{
Properties props = System.getProperties();//得到系统属性
Session session = Session.getDefaultInstance(props, null);//获取默认会话
store = session.getStore("pop3");//使用POP3会话机制,连接服务器
store.connect(receivehost, from, passwd);//压入接收邮件服务器,用户,密码
folder = store.getDefaultFolder();//获取默认文件夹
if (folder == null) throw new Exception("No default folder");
folder = folder.getFolder("INBOX");//链接收件箱
if (folder == null) throw new Exception("No POP3 INBOX");
folder.open(Folder.READ_ONLY);//使用只读方式打开收件箱
Message[] msgs = folder.getMessages();//得到文件夹信息,获取邮件列表
for (int msgNum = 0; msgNum < msgs.length; msgNum++){
printMessage(msgs[msgNum]);
}
}
catch (Exception ex){
ex.printStackTrace();
}
finally{//释放资源
try{
if (folder!=null) folder.close(false);
if (store!=null) store.close();
}
catch (Exception ex2){
ex2.printStackTrace();
}
}
}
/**
* 打印邮件内容
* @param message
*/
public void printMessage(Message message){
try{
String from=((InternetAddress)message.getFrom()[0]).getPersonal();//获得发送邮件地址
if (from==null) from=((InternetAddress)message.getFrom()[0]).getAddress();
System.out.println("FROM: "+from);
String subject=message.getSubject();//获取标题
System.out.println("SUBJECT: "+subject);
Part messagePart=message;//获取信息对象
Object content=messagePart.getContent();//附件
if (content instanceof Multipart){
messagePart=((Multipart)content).getBodyPart(0);
System.out.println("[ Multipart Message ]");
}
String contentType=messagePart.getContentType();//获取content类型
System.out.println("CONTENT:"+contentType);
//如果邮件内容是纯文本或者是HTML,那么打印出信息
if (contentType.startsWith("text/plain") || contentType.startsWith("text/html")){
InputStream is = messagePart.getInputStream();
BufferedReader br=new BufferedReader(new InputStreamReader(is));
String thisLine="";
while ((thisLine=br.readLine())!=null){
System.out.println(thisLine);
thisLine=br.readLine();
}
}
System.out.println("-------------- END ---------------");
}
catch (Exception ex){
ex.printStackTrace();
}
}