Java mail API实现邮件收发

1、发邮件

public boolean send(final String subject, final String html,
final String from, final String[] to) {
try {
Properties props = new Properties();
// 开启debug调试
props.setProperty("mail.debug", "true");
// 发送服务器需要身份验证
props.setProperty("mail.smtp.auth", "true");
// 设置邮件服务器主机名
props.setProperty("mail.host", "***");

// 发送邮件协议名称
props.setProperty("mail.transport.protocol", "smtp");

// 设置环境信息
Session session = Session.getInstance(props);

// 创建邮件对象
Message msg = new MimeMessage(session);
msg.setSubject(subject);
// 设置邮件内容
// 设置发件人
msg.setFrom(new InternetAddress("***"));
msg.setContent(html, "text/html");
Transport transport = session.getTransport();
// 连接邮件服务器
transport.connect("***", "***");
// 发送邮件
Address[]as = new Address[to.length];
for(int i=0;i<to.length;i++){
as[i] = new InternetAddress(to[i]);
}
transport.sendMessage(msg, as);
// 关闭连接
transport.close();
return true;
} catch (MailException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}
return false;
}

2、收邮件

public void receive() {
try {
Properties props = new Properties();
// 开启debug调试
props.setProperty("mail.debug", "false");
// 发送服务器需要身份验证
props.setProperty("mail.smtp.auth", "true");
// 设置邮件服务器主机名
props.setProperty("mail.host", "***");
// 发送邮件协议名称
props.setProperty("mail.transport.protocol", "smtp");

// 设置环境信息
Session session = Session.getInstance(props);
Store store = session.getStore("pop3");
store.connect("***", "***");
Folder emailFolder = store.getFolder("INBOX");
emailFolder.open(Folder.READ_ONLY);


Message[] messages = emailFolder.getMessages();
for (int i = 0; i < messages.length; i++) {
Message message = messages[i];
Address from  = message.getFrom()[0];
if(from.toString().indexOf("")>=0){
System.out.println("==============================");
System.out.println("Subject: " + message.getSubject());
Object content = message.getContent();
Map<Object,Object> body = new HashMap<>();
body.put("index",1);
parse(content,body);
int index = (Integer)body.get("index");
if(index > 1){
fix(body);
}
System.out.println(body.get("text"));
}
}
emailFolder.close(false);
store.close();
} catch (MailException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
}catch (IOException e) {
e.printStackTrace();
}
}