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ClassmateWang
mynote
Commits
ddb4a984
Commit
ddb4a984
authored
Oct 22, 2021
by
ClassmateWang
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2021-10-22 16:29 完成\JAVA\网络\5)发送E-mail.md
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-- "a/JAVA/\347\275\221\347\273\234/5\357\274\211\345\217\221\351\200\201E-mail.md"
# 5)发送Email
# 5)发送Email
![
image-20211022152518358
](
https://wangnotes.oss-cn-beijing.aliyuncs.com/notesimage/image-20211022152518358.png
)
```
java
package
Socket
.
mail
;
import
javax.mail.Message
;
import
javax.mail.MessagingException
;
import
javax.mail.Session
;
import
javax.mail.Transport
;
import
javax.mail.internet.InternetAddress
;
import
javax.mail.internet.MimeMessage
;
import
java.io.Console
;
import
java.io.IOException
;
import
java.io.InputStream
;
import
java.nio.charset.Charset
;
import
java.nio.file.Files
;
import
java.nio.file.Paths
;
import
java.util.List
;
import
java.util.Properties
;
/**
* @BelongsProject: JavaLearnAll
* @BelongsPackage: Socket.mail
* @Author: Wang Haipeng
* @CreateTime: 2021-10-22 14:40
* @Description: JavaMail 测试
*/
public
class
MailTest
{
public
static
void
main
(
String
[]
args
)
throws
IOException
,
MessagingException
{
/*邮件服务器的配置文件*/
Properties
props
=
new
Properties
();
/*Paths.get
* param1: 路径名 可以是相对路径也可以是绝对路径
* param: 文件名*/
InputStream
in
=
Files
.
newInputStream
(
Paths
.
get
(
"src/main/java/Socket/mail/mail.properties"
));
props
.
load
(
in
);
List
<
String
>
lines
=
Files
.
readAllLines
(
Paths
.
get
(
"src/main/java/Socket/mail/mail.txt"
),
Charset
.
forName
(
"UTF-8"
));
String
from
=
lines
.
get
(
0
);
String
to
=
lines
.
get
(
1
);
String
subject
=
lines
.
get
(
2
);
StringBuilder
builder
=
new
StringBuilder
();
for
(
int
i
=
3
;
i
<
lines
.
size
()
;
i
++){
builder
.
append
(
lines
.
get
(
i
));
builder
.
append
(
"\n"
);
}
/*
Java 要与Console进行交互,不总是能得到可用的Java Console类的。一个JVM是否有可用的Console,依赖于底层平台和JVM如何被调用。
如果JVM是在交互式命令行(比如Windows的 cmd,linux/unix的 terminal)中启动的,并且输入输出没有重定向到另外的地方,才可得到一个可用的Console实例。
这里在Idea 中执行的时候无法获取Console 实例
*/
Console
console
=
System
.
console
();
/*从控制台获取SMTP服务器的密码*/
String
password
=
new
String
(
console
.
readPassword
(
"Password:"
));
/*根据SMTP服务器属性文件配置Session 对象*/
Session
mailSession
=
Session
.
getDefaultInstance
(
props
);
mailSession
.
setDebug
(
true
);
//mailSession.setDebug(true);
MimeMessage
message
=
new
MimeMessage
(
mailSession
);
/*设置发送者*/
message
.
setFrom
(
new
InternetAddress
(
from
));
/*设置接收者*/
InternetAddress
[]
addresses
=
InternetAddress
.
parse
(
to
);
/*
接收者类型可以是Message.RecipientType.TO,Message.RecipientType.CC和Message.RecipientType.BCC,
TO表示主要接收人,CC表示抄送人,BCC表示秘密抄送人。
*/
message
.
addRecipients
(
Message
.
RecipientType
.
TO
,
addresses
);
/*设置主题*/
message
.
setSubject
(
subject
);
/*设置文本的内容*/
message
.
setText
(
builder
.
toString
());
Transport
tr
=
mailSession
.
getTransport
();
try
{
/*配置发件人的账户名和密码*/
/*
* 如果邮箱设置的了认证码则这里的第二个参数要设置成为认证码而不能是邮件密码
* */
tr
.
connect
(
null
,
password
);
tr
.
sendMessage
(
message
,
message
.
getAllRecipients
());
}
finally
{
tr
.
close
();
}
}
}
```
![
image-20211022162658499
](
https://wangnotes.oss-cn-beijing.aliyuncs.com/notesimage/image-20211022162658499.png
)
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