Causes the execution of an applet or bean. The applet or bean executes in the specified plugin. If the plugin is not available, displays a dialog to initiate the download of the plugin software.
<jsp:plugin
type="bean|applet"
code="
classFileName"
codebase="
classFileDirectoryName"
[ name="
instanceName" ]
[ archive="
URIToArchive, ..." ]
[ align="
bottom|top|middle|left|right" ]
[ height="{
displayPixels| <%= expression %>}"]
[ width="{
displayPixels| <%= expression %>}"]
[ hspace="
leftRightPixels" ]
[ vspace="
topBottomPixels" ]
[ jreversion="
JREVersionNumber|
1.2" ]
[ nspluginurl="
URLToPlugin" ]
[ iepluginurl="
URLToPlugin" ] >
[ <jsp:params>
[ <jsp:param name="
parameterName" value="{
parameterValue| '${' Expression '}' | <%=
expression%>}" /> ]+
</jsp:params> ]
[ <jsp:fallback>
text message if plugin download fails</jsp:fallback> ]
</jsp:plugin>
<jsp:plugin type="bean|applet" code="classFileName" codebase="classFileDirectoryName" [ name="instanceName" ] [ archive="URIToArchive, ..." ] [ align="bottom|top|middle|left|right" ] [ height="{displayPixels | '${' Expression '}' | %= expression %}" ] [ width="{displayPixels | '${' Expression '}' | %= expression %}"] [ hspace="leftRightPixels" ] [ vspace="topBottomPixels" ] [ jreversion="JREVersionNumber | 1.2" ] [ nspluginurl="URLToPlugin" ] [ iepluginurl="URLToPlugin" ] > [ <jsp:params> [ <jsp:param name="parameterName" value="{parameterValue | '${' Expression '}' | %= expression %}" /> ]+ </jsp:params> ] [ <jsp:fallback> text message if plugin download fails </jsp:fallback> ] </jsp:plugin>
<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>
The jsp:plugin
element plays or displays an object (typically an applet or bean) in the client web browser, using a Java plug-in that is built in to the browser or downloaded from a specified URL.
When the JSP page is translated and compiled and Java and sends back an HTML response to the client, the jsp:plugin
element is replaced by either an <object>
or <embed>
element, according to the browser version. The <object>
element is defined in HTML 4.0 and <embed>
in HTML 3.2.
In general, the attributes to the jsp:plugin
element specify whether the object is a bean or an applet, locate the code that will be run, position the object in the browser window, specify an URL from which to download the plug-in software, and pass parameter names and values to the object. The attributes are described in detail in the next section.
type="bean|applet"
bean
or applet
, as this attribute has no default value.
code="
classFileName"
.class
extension in the name. The class file you specify should be in the directory named in the codebase
attribute.
codebase="
classFileDirectoryName"
jsp:plugin
is used.
name="
instanceName"
archive="
URIToArchive, ..."
codebase
. The archive files are loaded securely, often over a network, and typically improve the applet's performance.
align="
bottom|top|middle|left|right"
jsp:plugin
element appears. The allowed values for align
are listed below:
bottom
Aligns the bottom of the image with the baseline of the text line.
top
Aligns the top of the image with the top of the text line.
middle
Aligns the vertical center of the image with the baseline of the text line.
left
Floats the image to the left margin and flows text along the image's right side.
right
Floats the image to the right margin and flows text along the image's left side.
height="{
displayPixels
| <%= expression %>}" width="{displayPixels | <%= expression %>}"
hspace="leftRightPixels" vspace="topBottomPixels
"
- The amount of space, in pixels, to the left and right (or top and bottom) of the image the applet or bean displays. The value must be a nonzero number. Note that hspace creates space to both the left and right and vspace creates space to both the top and bottom.
jreversion="JREVersionNumber | 1.2"
- The version of the Java Runtime Environment (JRE) the applet or bean requires. The default value is 1.2.
nspluginurl="URLToPlugin"
- The URL where the user can download the JRE plug-in for Netscape Navigator. The value is a full URL, with a protocol name, optional port number, and domain name.
ie
pluginurl="URLToPlugin"
- The URL where the user can download the JRE plug-in for Internet Explorer. The value is a full URL, with a protocol name, optional port number, and domain name.
<jsp:params> [ <jsp:param name="parameterName"
value="{parameterValue | <%= expression %>}" /> ]+ </jsp:params>
- The parameters and values that you want to pass to the applet or bean. To specify more than one parameter value, you can use more than one
jsp:param
element within the jsp:params
element.
The name
attribute specifies the parameter name and takes a case-sensitive literal string. The value
attribute specifies the parameter value and takes either a case-sensitive literal string or an expression that is evaluated at runtime.
If the dynamic resource you are passing the parameter to is an applet, it reads the parameter with the java.applet.Applet.getParameter
method.
<jsp:fallback>
text message for user </jsp:fallback>