一些非常有用的工具类之javamail(from韩顺平)

时间:2023-12-18 21:18:02

之前编写一个类淘宝服务器时,需要使用javamail发送邮件,搜到的一个工具类,很有用。

需要下载导入:activation.jar和mail.jar

package com.cx.service;

import java.util.*;
import javax.mail.*; import javax.mail.internet.*; import javax.activation.*; 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 boolean needAuth = false; // smtp是否需要认证 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));
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;
} } //可以修改的部分
public static void sendToSomebody(String mailbody,String title,String toEmail){
//指明让哪个smtp转发
SendMail themail=new SendMail("smtp.163.com");
//校验身份
themail.setNeedAuth(true); //邮件标题
if(themail.setSubject(title) == false) return;
//将要发送的 内容放入邮件体
if(themail.setBody(mailbody) == false) return; //发送到哪里
if(themail.setTo(toEmail) == false) return; //谁发送的
if(themail.setFrom("m15608064642@163.com") == false) return; //将在sohu网站上的邮件用户名和 密码 放入邮件体
themail.setNamePass("m15608064642@163.com","sure4321"); //发送
if(themail.sendout() == false) return;
}
}