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java收发邮件（转）

2014-06-09 14:01  夜半花开  阅读(532)  评论(0)  编辑  收藏  举报

转自：http://www.myexception.cn/program/838286.html

JAVA使用IMAP、POP3、SMTP协议收发邮件

  1 package com.gatgets.mail;
  2 
  3 import java.io.UnsupportedEncodingException;
  4 
  5 import java.util.Date;
  6 
  7 import java.util.Properties;
  8 
  9 import javax.mail.Authenticator;
 10 
 11 import javax.mail.FetchProfile;
 12 
 13 import javax.mail.Folder;
 14 
 15 import javax.mail.Message;
 16 
 17 import javax.mail.Message.RecipientType;
 18 
 19 import javax.mail.PasswordAuthentication;
 20 
 21 import javax.mail.Session;
 22 
 23 import javax.mail.Store;
 24 
 25 import javax.mail.Transport;
 26 
 27 import javax.mail.internet.InternetAddress;
 28 
 29 import javax.mail.internet.MimeMessage;
 30 
 31 import javax.mail.internet.MimeUtility;
 32 
 33 
 34 
 35 
 36 /**
 37 
 38 * 邮件工具类
 39 
 40 * 需要导入mail.jar包(j2ee自带)
 41 
 42 * @author 王正镇
 43 
 44 * @date 2011-8-14
 45 
 46 */
 47 
 48 public class EmailUtil {
 49 
 50 
 51 
 52 
 53 private String username = null; // 邮箱用户名
 54 
 55 private String password = null; // 邮箱密码
 56 
 57 
 58 
 59 
 60 /**
 61 
 62 * 传入自己的邮箱用户名和密码
 63 
 64 * @param username
 65 
 66 * @param password
 67 
 68 */
 69 
 70 public EmailUtil(String username, String password) {
 71 
 72 this.username = username;
 73 
 74 this.password = password;
 75 
 76 }
 77 
 78 
 79 /**
 80 
 81 * 创建连接会话
 82 
 83 * @param props
 84 
 85 * @return
 86 
 87 */
 88 
 89 public Session createSession(Properties props) {
 90 
 91 
 92 Session session = Session.getInstance(props, new Authenticator() {
 93 
 94 // 返回用户名密码认证
 95 
 96 @Override
 97 
 98 public PasswordAuthentication getPasswordAuthentication() {
 99 
100 PasswordAuthentication pa = new PasswordAuthentication(username, password);
101 
102 return pa;
103 
104 }
105 
106 });
107 
108 
109 return session;
110 
111 }
112 
113 
114 
115 
116 /**
117 
118 * 发送邮件(需设置SMTP)
119 
120 * @throws Exception 
121 
122 */
123 
124 public void sendMail(Properties props, SendEmailMessage sem) throws Exception {
125 
126 
127 Session session = createSession(props);
128 
129 
130 // 消息
131 
132 Message msg = new MimeMessage(session);
133 
134 msg.setFrom(InternetAddress.parse(MimeUtility.decodeText(sem.getFrom()))[0]);
135 
136 // TO为初级收件人，CC为邮件副本抄送，BCC应该是密秘抄送吧
137 
138 msg.setRecipients(RecipientType.TO, InternetAddress.parse(sem.getRecipient()));
139 
140 msg.setSubject(sem.getSubject());
141 
142 msg.setText(sem.getText());
143 
144 msg.setSentDate(new Date());
145 
146 
147 // 发送消息
148 
149 Transport.send(msg);
150 
151 }
152 
153 
154 /**
155 
156 * 接收邮件(需设置POP3或SAMP)
157 
158 * @throws Exception 
159 
160 */
161 
162 public void receiveMail(Properties props, String protocol) throws Exception {
163 
164 
165 Session session = createSession(props);
166 
167 Store store = session.getStore(protocol);
168 
169 store.connect(); // 连接
170 
171 Folder inbox = store.getFolder("INBOX"); // 进入根目录
172 
173 inbox.open(Folder.READ_WRITE); // 只读方式
174 
175 FetchProfile profile = new FetchProfile();
176 
177 profile.add(FetchProfile.Item.ENVELOPE); // 获取信封
178 
179 Message[] msgs = inbox.getMessages(); // 得到所有邮件
180 
181 inbox.fetch(msgs, profile); // 预获取信息
182 
183 // 打印
184 
185 for (int i = 0; i < msgs.length; i++) {
186 
187 System.out.println("发送时间：" + msgs[i].getSentDate());
188 
189 System.out.println("发送人：" + decodeText(msgs[i].getFrom()[0].toString()));
190 
191 System.out.println("大小：" + msgs[i].getSize());
192 
193 System.out.println("标题：" + msgs[i].getSubject());
194 
195 System.out.println("内容" + msgs[i].getContent());
196 
197 System.out.println("-------------------");
198 
199 }
200 
201 
202 store.close();
203 
204 }
205 
206 
207 /**
208 
209 * 处理中文编码问题
210 
211 * @param text
212 
213 * @return
214 
215 * @throws UnsupportedEncodingException
216 
217 */
218 
219 private String decodeText(String text) throws UnsupportedEncodingException {
220 
221 
222 if (text == null) {
223 
224 return null;
225 
226 }
227 
228 
229 if (text.startsWith("=?GB") || text.startsWith("=?gb"))
230 
231 text = MimeUtility.decodeText(text);
232 
233 else
234 
235 text = new String(text.getBytes("ISO8859_1"));
236 
237 return text;
238 
239 }
240 
241 
242 
243 }
 1 package com.gatgets.mail;
 2 
 3 import java.util.Properties;
 4 /**
 5 * 邮件默认配置类
 6 * 方法中的必要参好，可根据实际情况修改
 7 * @author 王正镇
 8 * @date 2011-8-14
 9 */
10 public class DefaultConfigurer {
11 
12 /**
13 * 获取SMTP默认配置
14 * @return
15 */
16 public static Properties getSMTP() {
17 Properties p = new Properties();
18 p.setProperty("mail.smtp.host", "smtp.qq.com"); // 按需要更改
19 p.setProperty("mail.smtp.protocol", "smtp");
20 p.setProperty("mail.smtp.port", "465");
21 p.setProperty("mail.smtp.auth", "true");
22 // SSL安全连接参数
23 p.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
24 p.setProperty("mail.smtp.socketFactory.fallback", "false");
25 p.setProperty("mail.smtp.socketFactory.port", "465");
26 return p;
27 }
28 /**
29 * 获取POP3收信配置
30 * @return
31 */
32 public static Properties getPOP3() {
33 Properties p = new Properties();
34 p.setProperty("mail.pop3.host", "pop.qq.com"); // 按需要更改
35 p.setProperty("mail.pop3.port", "995");
36 // SSL安全连接参数
37 p.setProperty("mail.pop3.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
38 p.setProperty("mail.pop3.socketFactory.fallback", "false");
39 p.setProperty("mail.pop3.socketFactory.port", "995");
40 return p;}
41 /**
42 * 获取IMAP收信配置
43 * @return
44 */
45 public static Properties getIMAP() {
46 Properties p = new Properties();
47 p.setProperty("mail.imap.host", "imap.qq.com"); // 按需要更改
48 p.setProperty("mail.imap.port", "993");
49 // SSL安全连接参数
50 p.setProperty("mail.imap.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
51 p.setProperty("mail.imap.socketFactory.fallback", "false");
52 p.setProperty("mail.imap.socketFactory.port", "993");
53 return p;}
54 }

 

 1 package com.gatgets.mail;
 2 
 3 /**
 4 * 发送邮件消息包装属性类
 5 * 
 6 * @author 王正镇
 7 * @date 2011-8-14
 8 */
 9 public class SendEmailMessage {
10 
11 
12 private String type; // 格式类型，如 text/html;charset=gbk
13 private String from; // 发送人
14 private String subject; // 标题
15 private String text; // 内容
16 private String recipient; // 接收人，多个接收人用逗号分隔
17 private String datetime; // 发送时间
18 
19 
20 public String getFrom() {
21 return from;
22 }
23 
24 
25 public void setFrom(String from) {
26 this.from = from;
27 }
28 
29 
30 public String getSubject() {
31 return subject;
32 }
33 
34 
35 public void setSubject(String subject) {
36 this.subject = subject;
37 }
38 
39 
40 public String getText() {
41 return text;
42 }
43 
44 
45 public void setText(String text) {
46 this.text = text;
47 }
48 
49 
50 public String getRecipient() {
51 return recipient;
52 }
53 
54 
55 public void setRecipient(String recipient) {
56 this.recipient = recipient;
57 }
58 
59 
60 public String getDatetime() {
61 return datetime;
62 }
63 
64 
65 public void setDatetime(String datetime) {
66 this.datetime = datetime;
67 }
68 
69 
70 public String getType() {
71 return type;
72 }
73 
74 
75 public void setType(String type) {
76 this.type = type;
77 }
78 
79 
80 }

测试类

package com.gatgets.mail;

/**
* 测试类
* @author 王正镇
* @date 2011-8-14
*/
public class TestEmail {


/**
* 程序入口点
* @param args
* @throws Exception 
*/
public static void main(String[] args) throws Exception {
// 默认情况下，在这里输入QQ号和密码，便可收信与发信
EmailUtil eu = new EmailUtil("xxx", "xxx");
SendEmailMessage sem = new SendEmailMessage();
sem.setFrom("wzz<xxx@gmail.com>");
sem.setRecipient("xxx@qq.com,zzz@163.com");
sem.setSubject("镇长");
sem.setText("hello world");
eu.sendMail(DefaultConfigurer.getSMTP(), sem);
System.out.println("发送成功");
// 收邮件
eu.receiveMail(DefaultConfigurer.getPOP3(), "pop3"); // pop3收信
System.out.println("收取完毕");
// 使用IMAP收信会抛出 Failed to load IMAP envelope 异常
//eu.receiveMail(DefaultConfigurer.getIMAP(), "imap"); // imap收信
}
}