What is JavaMail
JavaMail is a sun-released API for handling emails. It makes it easy to perform some common message transfers.
Although JavaMail is one of the Sun's APIs, it has not yet been added to the standard Java Development Toolkit (Java Development Kit), which means that you must download the JavaMail file separately before you use it. In addition, you will need to have Sun's JavaBeans activation Framework (JAF). The operation of the JavaBeans activation framework is complex, and it is simple to say that JavaMail's operation must depend on its support. The path to specify these files is used under Windows 2000 and is similar on other operating systems.
The next thing to explain is the most difficult part of this guide.
This guide includes three parts: HTML tables, a combination of JavaMail, JavaMail, and JSP.
Part I: HTML tables
The first part provides an example of the most basic HTML-based email delivery procedure. The second part tells about the working principle of javamail. The third part introduces the JavaMail to add the JSP, create a basic email send to receive the program.
Dividing components
The most important feature of JSP is the ability to divide the entire Web page into small components. The components used here include:
An HTML form used to send email messages to the JSP;
A JSP page is used to process and send letters.
The first step is to create an HTML table to send information to the JSP page. You can copy the following HTML code to your computer:
HTML source code used to send email
<HTML>
<BODY>
<form action= "sendmail.jsp" method= "POST" >
<table align= "center" >
<TR>
<TD width= "50%" >
To:<br><input name= "to" size= ">"
</TD>
<TD width= "50%" >
From:<br><input name= "from" size= ">"
</TD>
</TR>
<TR>
<TD colspan= "2" >
Subject:<br><input name= "Subject" size= "M" >
</TD>
</TR>
<TR>
<TD colspan= "2" >
Message:<br><textarea name= "text" rows=25 cols=85></textarea>
</TD>
</TR>
</TABLE>
<input type= "Submit" Name= "Cb_submit" value= "Send" >
<input type= "reset" name= "Cb_reset" value= "clear" >
</FORM>
</BODY>
</HTML>
The above program will create a file that contains basic email information such as your Inbox address, send address, subject, and content. You can, of course, decide on your own needs to include that information.
The use of this HTML file has two requirements: The 1th is that the generated file must be sent to the program that will be introduced next. In this case it is sendmail.jsp, but when you use it, you must replace it with the URL of the file in the system, and the 2nd is that there must be room to allow the user to send email.
The second part will analyze the characteristics of javamail and prepare the JSP program in the third part. So next we will learn javamail.
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