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更新时间：2021-11-12 17:51:33
使用javaMail发送电子邮件需要两个jar包：activation.jar和mail.jar。具体代码如下：
index.jsp:
1 <%@ page language=”java” import=”java.util.*” pageEncoding=”utf-8”%>
2 <!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”>
3
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发送文本型邮件
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SMTP服务器
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登录帐号
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登录密码
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发件人
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收件人
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主题
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sendMail.jsp:
1 <%@ page language=”java” import=”java.util.“ pageEncoding=”utf-8”%>
2
3 class=”com.email.SendTextMail”>
4 <jsp:setProperty property=”“ name=”mySend”/>
5
6 <%
7 //注意这里使用javaBean自省机制为属性赋值
8 boolean status = mySend.send();
9 if(status){
10 out.println(“恭喜你，发送邮件成功！”);
11 }else{
12 out.println(“对不起，发送邮件失败！”);
13 }
14 %>SendTextMail.java:
1 package com.email;
2
3 import java.util.Date;
4 import java.util.Properties;
5
6 import javax.mail.Authenticator;
7 import javax.mail.Message;
8 import javax.mail.PasswordAuthentication;
9 import javax.mail.Session;
10 import javax.mail.Transport;
11 import javax.mail.internet.InternetAddress;
12 import javax.mail.internet.MimeMessage;
13
14 public class SendTextMail {
15 String SMTPHost = “”;//SMTP服务器
16 String user = “”;//登录SMTP服务器的帐号
17 String password = “”;//密码
18 String from = “”;
19 String to = “”;
20 String subject = “”;
21 String content = “”;
22
23 public SendTextMail(){}
24
25 public String getSMTPHost() {
26 return SMTPHost;
27 }
28
29 public void setSMTPHost(String host) {
30 SMTPHost = host;
31 }
32
33 public String getUser() {
34 return user;
35 }
36
37 public void setUser(String user) {
38 this.user = user;
39 }
40
41 public String getPassword() {
42 return password;
43 }
44
45 public void setPassword(String password) {
46 this.password = password;
47 }
48
49 public String getFrom() {
50 return from;
51 }
52
53 public void setFrom(String from) {
54 this.from = from;
55 }
56
57 public String getTo() {
58 return to;
59 }
60
61 public void setTo(String to) {
62 this.to = to;
63 }
64
65 public String getSubject() {
66 return subject;
67 }
68
69 public void setSubject(String subject) {
70 this.subject = subject;
71 }
72
73 public String getContent() {
74 return content;
75 }
76
77 public void setContent(String content) {
78 this.content = content;
79 };
80 /
81 liuling476777389@sina.cn
82 pop.sina.cn
83 */
84 public boolean send(){
85 //创建一个属性对象
86 Properties props = System.getProperties();
87 //指定SMTP服务器
88 props.put(“mail.smtp.host”, SMTPHost);
89 props.put(“mail.smtp.auth”, “true”); //true一定要加引号
90 try {
91 //创建一个授权验证对象
92 SmtpAuth auth = new SmtpAuth();
93 auth.setAccount(user, password);
94 //创建一个session对象
95 Session mailSession = Session.getDefaultInstance(props,auth);
96 mailSession.setDebug(true);
97 //创建一个message对象
98 Message message = new MimeMessage(mailSession);
99 message.setFrom(new InternetAddress(from));//指定发件人
100 message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));//指定收件人
101 message.setSubject(subject);//指定主题
102 message.setText(content);//指定内容
103 message.setSentDate(new Date());//指定发送日期
104 //指定邮件等级1.紧急 3.普通 5.缓慢
105 message.setHeader(“X-Priority”, “1”);
106 message.saveChanges();
107 //创建一个Transport对象
108 Transport transport = mailSession.getTransport(“smtp”);
109 //连接SMTP服务器
110 transport.connect(SMTPHost, user, password);
111 //发送邮件
112 transport.sendMessage(message, message.getAllRecipients());
113 transport.close();
114 return true;
115 } catch (Exception e) {
116 e.printStackTrace();
117 return false;
118 }
119 }
120
121 }
122
123 class SmtpAuth extends Authenticator{
124 String user,password;
125 void setAccount(String user,String password){
126 this.user = user;
127 this.password = password;
128 }
129 //取得PasswordAuthentication对象
130 protected PasswordAuthentication getPasswordAuthentication(){
131 return new PasswordAuthentication(user,password);
132 }
133 }经测试用过，能过成功发送邮件。