Java uses Commons-email-1.2.jar for simple e-mail

1, first introduced Commons-email-1.2.jar package

2, look directly at the code bar Commons-email-1.2.jar has already encapsulated the method for us

A, first to a simple can not send attachments

public class Testcommonemail {
public static void Main (string[] args) {
Simpleemail simpleemail = new Simpleemail ();
Set up a mail server to use to send mail if QQ is smtp.qq.com premise is QQ has already opened SMTP service
Simpleemail.sethostname ("smtp.163.com");

Prevent Chinese garbled characters
Simpleemail.setcharset ("Utf-8");


try {
Recipient mailbox fit and recipient alias
Simpleemail.addto ("[Email protected]", "fireworks with different colors");
Sender's mailbox and password
Simpleemail.setauthentication ("[Email protected]",
"XXX");

Sender's mailbox and alias of this email address should be set with the use of mail server, meaning that QQ can not be sent by the SMTP mail NetEase
Simpleemail.setfrom ("[Email protected]", "NetEase mailbox");
Simpleemail.setsubject ("subject");
Simpleemail.setmsg ("Hello world! Hello, world! ");
Simpleemail.send ();


} catch (Emailexception e) {
TODO auto-generated Catch block
System.out.println ("Send Failed");
E.printstacktrace ();
}
SYSTEM.OUT.PRINTLN ("sent successfully");
}


}

B. Send mail with Attachments

public class Testcommonemail {
public static void Main (string[] args) {

Multipartemail simpleemail = new Multipartemail ();
Set up a mail server to use to send mail
Simpleemail.sethostname ("smtp.163.com");
Simpleemail.setcharset ("Utf-8");


try {
Recipient mailbox fit and recipient alias
Simpleemail.addto ("[Email protected]", "fireworks with different colors");
Sender's mailbox and password
Simpleemail.setauthentication ("[Email protected]",
"XXX");


Sender mailboxes and aliases this mailbox should correspond to settings using the mail server
Simpleemail.setfrom ("[Email protected]", "NetEase mailbox");
Simpleemail.setsubject ("subject");
Simpleemail.setmsg ("Hello world! Hello, world! ");
Emailattachment emailattachment = new Emailattachment ();

Attachments are placed in the project root directory
Emailattachment.setpath ("Naaomei.jpeg");
Simpleemail.attach (emailattachment);


Simpleemail.send ();


} catch (Emailexception e) {
TODO auto-generated Catch block
System.out.println ("Send Failed");
E.printstacktrace ();
}
SYSTEM.OUT.PRINTLN ("sent successfully");
}


}

C, packaging the method of sending mail optimize all sender information and email_host in the configuration file

Config.properties

Email_host=smtp.163.com
[Email protected]
Email_password=xxx

Read the class of properties in the configuration file Propertiesutil.java

public class Propertiesutil {
private static InputStream InputStream = null;


public static string Readstringvalue (String propertyname) throws Exception {
String _propertyname = "";
ClassLoader default load is the absolute path starting with Classpath cannot add "/", otherwise cannot find the file
InputStream = PropertiesUtil.class.getClassLoader ()
. getResourceAsStream ("config.properties");
System.out.println (Inputstream.available ());
Properties P = new properties ();
System.out.println ("P:" + P);
try {
P.load (InputStream);
} catch (IOException E1) {
Inputstream.close ();
}
_propertyname = P.get (PropertyName). ToString ();
Inputstream.close ();
return _propertyname;
}

Send various messages Emailutil.java

public class Emailutil {


public static void SendMail (string to, string subject, String msg)
Throws Exception {
Htmlemail email = new Htmlemail ();
Email.sethostname (Propertiesutil.readstringvalue ("Email_host"));
Email.setcharset ("Utf-8");
Email.addto (to);
Email.setfrom (Propertiesutil.readstringvalue ("Email_from"));
Email.setauthentication (Propertiesutil.readstringvalue ("Email_from"),
Propertiesutil.readstringvalue ("Email_password"));
Email.setsubject (subject);
Email.sethtmlmsg (msg);
Email.send ();
}


public static void Sendmailwithattachment (string to, string subject,
String msg, emailattachment[] attachs) throws Exception {
Htmlemail email = new Htmlemail ();
Email.sethostname (Propertiesutil.readstringvalue ("Email_host"));
Email.setcharset ("Utf-8");
Email.addto (to);
Email.setfrom (Propertiesutil.readstringvalue ("Email_from"));
Email.setauthentication (Propertiesutil.readstringvalue ("Email_from"),
Propertiesutil.readstringvalue ("Email_password"));
Email.setsubject (subject);
Email.sethtmlmsg (msg);
for (int i = 0; i < attachs.length; i++) {
Email.attach (Attachs[i]);
}
Email.send ();
}


public static void Sendmultipartmail (string to, string subject, String msg,
String fileName) throws Exception {


Create an Attachment Message object


Multipartemail multipartmail = new Multipartemail ();
Multipartmail.setcharset ("Utf-8");
Multipartmail.sethostname (Propertiesutil.readstringvalue ("Email_host"));
Create an attachment (the attachment can be a local path or a network URL)
Emailattachment emailattachment = new Emailattachment ();
Emailattachment.setpath (FileName);
Emailattachment.setdescription (emailattachment.attachment);
Emailattachment.setdescription ("This is a attach test!");
try {
System.out.println ("email_from======="
+ Propertiesutil.readstringvalue ("Email_from"));
Multipartmail.setfrom (Propertiesutil.readstringvalue ("Email_from"));
Multipartmail.setauthentication (
Propertiesutil.readstringvalue ("Email_from"),
Propertiesutil.readstringvalue ("Email_password"));
Multipartmail.addto (to);
MULTIPARTMAIL.ADDCC ("");
Multipartmail.setsubject (subject);
Multipartmail.setmsg (msg);
Multipartmail.attach (emailattachment);
Add an attachment
Multipartmail.attach (emailattachment);
Multipartmail.attach (emailattachment);
Multipartmail.attach (emailattachment);
Multipartmail.attach (emailattachment);
Send
Multipartmail.send ();
} catch (Exception e) {
TODO auto-generated Catch
E.printstacktrace ();


}


}


public static void Main (string[] args) throws Exception {
SYSTEM.OUT.PRINTLN ("Send mail Start");
Emailutil.sendmail ("[Email protected]", "Hello", "nice to meet you!");
Emailutil.sendmultipartmail ("[Email protected]", "Nihaodjfajs",
"111sdfgsdfgsdfgsd", "d:/text.pdf");
emailattachment[] emailattachments = new emailattachment[2];
Emailattachment emailattachment = new Emailattachment ();
Emailattachment.setpath ("D:/text1.pdf");
Emailattachments[0] = emailattachment;
Emailattachment agreement = new emailattachment ();
Agreement.setpath ("D:/text.pdf");
/*
* Agreement.setdisposition (emailattachment.attachment);
* Agreement.setdescription ("Booking Business Cooperation Agreement (Shanghai Multi-Trip)");
* Agreement.setname (Mimeutility.encodetext ("Booking Business Cooperation Agreement (Shanghai Multi-trip). doc"));
*/
EMAILATTACHMENTS[1] = agreement;
Emailutil.sendmailwithattachment ("[Email protected]",
"Newnewnihaodjfajs", "111sdfgsdfgsdfgsd", emailattachments);
SYSTEM.OUT.PRINTLN ("Success");
}
}

Java uses Commons-email-1.2.jar for simple e-mail