一个读取Gmail邮件的简单程序

一个读取Gmail邮件的简单程序

关键字: 企业应用
兄弟我理论性的东西说不出来，不过实际运用咱还是有办法的
前几天由于工作需要，想了解下关于支持ssl的邮件收发，按照以前普通的做法是行不通的，所以就上网东找找，西瞧瞧。发现了个好东西，并且实验成功。
那天本想来javaeye看看有没有人有相关的经验，找了老半天，连个屁也没闻到，我就说我们，我们这些做程序员的不能老是吹吹水，谈谈道理，我们得拿出点实际的东西出来，就想fins一样，我就很佩服他的贡献精神。
不说废话了，看看源代码，大家有空也可以实验下。还真有用
package org.job.six;

import java.io.UnsupportedEncodingException;
import java.security.Security;
import java.util.Properties;

import javax.mail.FetchProfile;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeUtility;

import org.job.util.Logger;
import org.job.util.mail.ApplicationContext;

/**
* 用于收取Gmail邮件
*
* @author wuhua
*/
public class GmailFetch {
private static Logger logger = Logger.getLogger(GmailFetch.class);
public static void main(String argv[]) throws Exception {
logger.debug("开始读取邮件



");
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";

// Get a Properties object
Properties props = System.getProperties();
props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
props.setProperty("mail.pop3.socketFactory.fallback", "false");
props.setProperty("mail.pop3.port", "995");
props.setProperty("mail.pop3.socketFactory.port", "995");

// 以下步骤跟一般的JavaMail操作相同
Session session = Session.getDefaultInstance(props, null);

// 请将红色部分对应替换成你的邮箱帐号和密码
URLName urln = new URLName("pop3", ApplicationContext.POP3, 995, null,
ApplicationContext.GMAIL_MAIL_NAME,
ApplicationContext.GMAIL_MAIL_PASSWORD);
Store store = session.getStore(urln);
Folder inbox = null;
try {
store.connect();
inbox = store.getFolder("INBOX");
inbox.open(Folder.READ_ONLY);
FetchProfile profile = new FetchProfile();
profile.add(FetchProfile.Item.ENVELOPE);
Message[] messages = inbox.getMessages();
inbox.fetch(messages, profile);
logger.debug("收件箱的邮件数：" + messages.length);
for (int i = 0; i < messages.length; i++) {
// 邮件发送者
String from = decodeText(messages[i].getFrom()[0].toString());
InternetAddress ia = new InternetAddress(from);
logger.debug("发信人:" + ia.getPersonal() + '('
+ ia.getAddress() + ')');
// 邮件标题
logger.debug("主题:" + messages[i].getSubject());
// 邮件大小
logger.debug("邮件大小:" + messages[i].getSize());
// 邮件发送时间
logger.debug("发送日期:" + messages[i].getSentDate());
}
} finally {
try {
inbox.close(false);
} catch (Exception e) {
}
try {
store.close();
} catch (Exception e) {
}
}

logger.debug("读取邮件完毕



");
}

protected static String decodeText(String text)
throws UnsupportedEncodingException {
if (text == null)
return null;
if (text.startsWith("=?GB") || text.startsWith("=?gb"))
text = MimeUtility.decodeText(text);
else
text = new String(text.getBytes("ISO8859_1"));
return text;
}

}

package org.job.six;

import java.io.UnsupportedEncodingException;
import java.security.Security;
import java.util.Properties;

import javax.mail.FetchProfile;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeUtility;

import org.job.util.Logger;
import org.job.util.mail.ApplicationContext;

/**
* 用于收取Gmail邮件
*
* @author wuhua
*/
public class GmailFetch {
private static Logger logger = Logger.getLogger(GmailFetch.class);
public static void main(String argv[]) throws Exception {
logger.debug("开始读取邮件



");
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";

// Get a Properties object
Properties props = System.getProperties();
props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
props.setProperty("mail.pop3.socketFactory.fallback", "false");
props.setProperty("mail.pop3.port", "995");
props.setProperty("mail.pop3.socketFactory.port", "995");

// 以下步骤跟一般的JavaMail操作相同
Session session = Session.getDefaultInstance(props, null);

// 请将红色部分对应替换成你的邮箱帐号和密码
URLName urln = new URLName("pop3", ApplicationContext.POP3, 995, null,
ApplicationContext.GMAIL_MAIL_NAME,
ApplicationContext.GMAIL_MAIL_PASSWORD);
Store store = session.getStore(urln);
Folder inbox = null;
try {
store.connect();
inbox = store.getFolder("INBOX");
inbox.open(Folder.READ_ONLY);
FetchProfile profile = new FetchProfile();
profile.add(FetchProfile.Item.ENVELOPE);
Message[] messages = inbox.getMessages();
inbox.fetch(messages, profile);
logger.debug("收件箱的邮件数：" + messages.length);
for (int i = 0; i < messages.length; i++) {
// 邮件发送者
String from = decodeText(messages[i].getFrom()[0].toString());
InternetAddress ia = new InternetAddress(from);
logger.debug("发信人:" + ia.getPersonal() + '('
+ ia.getAddress() + ')');
// 邮件标题
logger.debug("主题:" + messages[i].getSubject());
// 邮件大小
logger.debug("邮件大小:" + messages[i].getSize());
// 邮件发送时间
logger.debug("发送日期:" + messages[i].getSentDate());
}
} finally {
try {
inbox.close(false);
} catch (Exception e) {
}
try {
store.close();
} catch (Exception e) {
}
}

logger.debug("读取邮件完毕



");
}

protected static String decodeText(String text)
throws UnsupportedEncodingException {
if (text == null)
return null;
if (text.startsWith("=?GB") || text.startsWith("=?gb"))
text = MimeUtility.decodeText(text);
else
text = new String(text.getBytes("ISO8859_1"));
return text;
}

}

上面代码，完全可以封装成一个收取ssl邮件的库
改天有时间整理下关于发邮件的方法