JDBC configuration file, mail, password encryption tool class

Configuration file

Url=jdbc:mysql:///sys
Classname=com.mysql.jdbc.driver
Username=root
password=123456
Maxactive=5
maxwait=5000
Initsize=3

Import java.io.IOException;
Import Java.security.MessageDigest;
Import java.util.Properties;
Import Java.util.UUID;

Import Javax.mail.Authenticator;
Import Javax.mail.Message;
Import javax.mail.PasswordAuthentication;
Import javax.mail.Session;
Import Javax.mail.Transport;
Import javax.mail.internet.InternetAddress;
Import Javax.mail.internet.MimeMessage;
Import Javax.mail.internet.MimeMessage.RecipientType;

Import Org.apache.commons.dbcp.BasicDataSource;

Import Sun.misc.BASE64Encoder;

public class Jdbcutils {

//configuration file loading
public static Basicdatasource DS;
static{
Properties P = new properties ();
try {
P.load (JdbcUtils.class.getClassLoader (). getResourceAsStream ("properties/myconfig.properties"));
Ds=new Basicdatasource ();
Ds.seturl (p.getproperty ("url"));
Ds.setusername (P.getproperty ("username"));
Ds.setpassword (P.getproperty ("password"));
Ds.setdriverclassname (P.getproperty ("ClassName"));
Ds.setmaxactive (Integer.parseint (P.getproperty ("maxactive"));
Ds.setmaxwait (Long.parselong (P.getproperty ("maxwait"));
Ds.setinitialsize (Integer.parseint (P.getproperty ("initsize"));
} catch (IOException e) {

E.printstacktrace ();
SYSTEM.OUT.PRINTLN ("File load failed ...");
}
}

public static Basicdatasource Getdatasource () {

return DS;
}
//Password encryption
public static string MD5 (String str) {
String Md5str=null;
try {
MessageDigest MD5 = messagedigest.getinstance ("MD5");
Base64encoder encode = new Base64encoder ();
Md5str=encode.encode (Md5.digest (Str.getbytes ("Utf-8"));
Md5str=md5str.substring (1,md5str.length ()-5);
StringBuilder sb = new StringBuilder (MD5STR);
Md5str=sb.reverse (). toString ();

} catch (Exception e) {
E.printstacktrace ();
}
return md5str;


}

Sending a message

Email Recipient's Address
Content information sent by message

public static void SendMail (String email,string content) {
try{
Create a program and mail server session object sessions
Properties Props = new properties ();
Set the protocol to send
Props.setproperty ("Mail.transport.protocol", "SMTP");
Set up a server to send mail to
Props.setproperty ("Mail.host", "smtp.sina.com");
Props.setproperty ("Mail.smtp.auth", "true");
Creating validators
Authenticator auth = new Authenticator () {

Public Passwordauthentication getpasswordauthentication () {
Set up sender's account and password
return new Passwordauthentication ("[Email protected]", "");
}
};
Create a session through the configuration of the server and the login validation object passed in
Send a message through this session
Session session = Session.getinstance (props, auth);
2. Create a message that is equivalent to the message content
Message message = new MimeMessage (session);
Set Sender
Message.setfrom (New InternetAddress ("[email protected]");
Set how and who to send
Message.setrecipient (recipienttype.to, new internetaddress (email));
Set up message delivery topics
Message.setsubject ("User activation");
Set up message content
Message.setcontent (Content, "text/html;charset=utf-8");
3 Create transport for sending messages
Transport.send (message);

}catch (Exception e) {
SYSTEM.OUT.PRINTLN ("message sent Failed");

}


}

//random generation of a UUID string
public static String Getuuidstr () {

UUID uuid = Uuid.randomuuid ();
Return uuid.tostring (). ReplaceAll ("-", "" "). toUpperCase ();
}

}

JDBC configuration file, mail, password encryption tool class