JSP syntax (11)

<Jsp: plugin> execute an applet or Bean. If possible, download a Java Plug-in to execute it.

JSP syntax
<Jsp: plugin

Type = "bean | applet"

Code = "classFileName"

Codebase = "classFileDirectoryName"

[Name = "instanceName"]

[Archive = "URIToArchive,..."]

[Align = "bottom | top | middle | left | right"]

[Height = "displayPixels"]

[Width = "displayPixels"]

[Hspace = "leftRightPixels"]

[Vspace = "topBottomPixels"]

[Jreversion = "Maid number | 1.1"]

[Nspluginurl = "URLToPlugin"]

[Iepluginurl = "URLToPlugin"]>

[<Jsp: params>

[<Jsp: param name = "parameterName"

Value = "{parameterValue | <% = expression % >}"/>] +

</Jsp: params>]

[<Jsp: fallback> text message for user </jsp: fallback>]

</Jsp: plugin>

Example

<Jsp: plugin type = applet code = "Molecule. class" codebase = "/html">

<Jsp: params>

<Jsp: param name = "molecule" value = "molecules/benzene. mol"/>

</Jsp: params>

<Jsp: fallback>

<P> Unable to load applet </p>

</Jsp: fallback>

</Jsp: plugin>

Description

<Jsp: plugin> elements are used to play or display an object (typically an applet and Bean) in a browser, and such display needs to be implemented in the browser's java Plug-in.

When the Jsp file is compiled and sent to the browser, the <jsp: plugin> element will be replaced with the <object> or <embed> element based on the browser version. Note: <object> is used for HTML 4.0 and <embed> for HTML 3.2.

In general, the <jsp: plugin> element specifies whether the object is an Applet or Bean, the class name, location, and where to download the Java Plug-in. The details are as follows:

Attribute

Type = "bean | applet"
. Type of the plug-in object to be executed. You must specify the Bean or applet, because this property has no default value.

Code = "classFileName"
The name of the Java Class to be executed by the Java Plug-in. It must end with. class. This file must exist in the directory specified by the codebase attribute.

Codebase = "classFileDirectoryName"
The directory (or path) of the Java Class file to be executed. If you do not provide this attribute, the Directory of the jsp file using <jsp: plugin> will be used.

Name = "instanceName"
The name of the Bean or applet instance, which will be called elsewhere in Jsp.

Archive = "URIToArchive ,..."
Some path names separated by commas (,) are used to pre-install the classes to be used, which improves the applet performance.

Align = "bottom | top | middle | left | right"
The position of the image, object, and Applet has the following values:

Bottom
Top
Middle
Left
Right
Height = "displayPixels" width = "displayPixels"
The length and width that the Applet or Bean will display. The value is a number in pixels.

Hspace = "leftRightPixels" vspace = "topBottomPixels"
When the Applet or Bean is displayed on the left and right of the screen, the space left up and down is measured in pixels.

Jreversion = "Maid number | 1.1"

The Java Runtime Environment (JRE) version required for running the Applet or Bean.

The default value is 1.1.

Nspluginurl = "URLToPlugin"

The JRE that Netscape Navigator users can use, which is a standard URL such as a http://www.aspcn.com/jsp

Iepluginurl = "URLToPlugin"
IE users can use JRE, this value is a standard URL, such as http://www.aspcn.com/jsp

<Jsp: params> [<jsp: param name = "parameterName"
Value = "{parameterValue | <% = expression % >}"/>] + </jsp: params>

The parameter or parameter value that you need to transmit to the applet or Bean.

<Jsp: fallback> text message for user </jsp: fallback>
A piece of text is used in Java

The plug-in cannot be displayed to the user when it is started. If the plug-in can be started but the applet or Bean cannot, an error message will pop up in the browser.