Use JavaMail in JSP

zhaozj2021-02-12 146

Do you want to create a mail to send a collection tool in JSP? The following will be introduced to create a mail sending a collection tool in JSP. In this article you can learn about some of the JavaMail API and how to use it in JSP. This article also includes an example of using JavaMail in JSP. JavaMail is a quite powerful API in the JSP application. Read this article needs to have a certain initial understanding of JSP, JavaBeans and Javamail. Of course, knowledge about JavaMail you can get through this article. If you don't know much about the above three, the server you use supports JSP and JavaMail, you can use them only by copying / paste. What is JavaMail JavaMail is the API of the SUN released to handle Email. It can easily perform some commonly used mail transmission. Although JavaMail is one of Sun's API, it has not yet been added to the standard Java Development Kit, which means you need to download another JavaMail file before use. In addition, you also need Sun's JavaBeans Activation Framework (JAF). The operation of JavaBeans Activation Framework is very complicated. It is simple to say that JavaMail's operation must depend on its support. Use the path to specify these files in Windows 2000, similar to other operating systems. The next thing to explain is the most difficult part of this guide. This guide includes three parts: HTML form, combined with JavaMail, Javamail, and JSP. Part 1: The first part of the HTML table provides an example of the most basic HTML-based Email sending charger. The second part tells the working principle of JavaMail. The third part introduces JavaMail to join JSP, create a basic Email sending charger. The most important feature of dividing components JSP is to divide the entire web page into some set of components. The components used here include: ● One HTML table used to send Email to 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: use to send email html source code

to:	From: < Input name = "from" size = "25">
Subject: < / TD>
Message: </ textarea> </ p> </ 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 Email basic information (for example: receiving addresses, sending addresses, subjects, and content). Of course, you can decide the file in accordance with your own needs. This HTML file has two points required: The first point is that the generated file must be sent to the next program that will be introduced. In this example, it is sendmail.jsp, but when you use, this file must be used in the URL in the system instead of it; the second point is that there must be space to allow the user to send email. The second part will analyze the characteristics of JavaMail, preparing for the JSP program in the third part. So let's learn JavaMail. Part II: About the downloaded JavaMail API with the download of the JavaMail document is useful. You can find it on /Docs/javadocs/index.html under JavaMail. The second part mainly analyzes the components of the mail program. You can get more information from reading documents. Components Send Mail Need to use Javamail, which makes it easy to use the operation of the message. Attribute object JavaMail needs to create a file that is "mail.smtp.host" used to send information. Properties PROPS = New Properties (); Props.Put ("mail.smtp.host", "SMTP.Jspinsider.com"); All JavaMail-based programs require at least one or all of the Dialogue targets.</p> <p>Session SendmailSession; sendmailsession = session.getInstance (props, null); Transfer mail is only sent or subject to two states. JavaMail describes both different states as transmission and storage. Transfer will send a message and save the message. Transport Transport; Transport = Sendmailsession.getTransport ("SMTP"); use JavaMail to save us a lot of time. JavaMail can replace all SMTP work. Note: JavaMail does not fully support all email to send charges. It currently only supports IMAP, SMTP, and POP3, in addition to this, you only wait for new JavaMail versions or its own development protocols. Information object information object will reflect the message you sent true. Message newMessage = new mimeMailSession; this is all the four objects we need. The next step will be how to add objects to JSP. Part III: JavaMail and JSP Creating JSP Under the JSP, we will start combining them together. The most important point is to confirm that the classification is based on the page. Also remember to mark java.util.date on the email. <% @ page import = "javax.mail. , javax.mail.internet. , javax.activation. , java.util. "%> Second, create a confirmation information sent by mail. Confirm that the information can be arbitrary, generally used "Your mail has been sent out." How to create and send us in the second part I have discussed the creation of information objects. We will follow the information below. This is as simple as the properties of the setting information object. You can implement this operation by the following program. newMessage.setFrom (new InternetAddress (request.getParameter ( "from"))); newMessage.setRecipient (Message.RecipientType.TO, new InternetAddress (request.getParameter ( "to"))); newMessage.setSubject (request.getParameter ( "Subject")); newMessage.setSentDate (new time ()); newMessage.Settext (Request.getParameter ("text"))); now will start sending information. It is very simple to achieve through JavaMail. Transport.send (newMessage); all components are all fully all components now. Now put them in JSP. 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