JSP action commands

In jsp (preferred for SUN Enterprise applications)Action instructionIncluding:Include,Forward,UseBean,GetProperty,SetProperty,Plugin.

I,Include command

<Jsp (preferred for SUN Enterprise Applications): include> tagContains a static or dynamic file.

Syntax:
<Jsp (preferred for SUN Enterprise Applications): include page = "path" flush = "true"/>
Or
<Jsp (preferred for SUN Enterprise Applications): include page = "path" flush = "true">
<Jsp (preferred for SUN Enterprise Applications): param name = "paramName" value = "paramValue"/>
</Jsp (preferred for SUN Enterprise Applications): include>

Note:
1. page = "path" is a relative path or a relative path expression.
2. flush = "true" must be set to true. The default value is false.
3. <jsp (preferred for SUN Enterprise Applications): The param> clause allows you to pass one or more parameters to dynamic files, you can also use multiple <jsp (preferred for SUN Enterprise Applications): param> on a single page to pass multiple parameters to dynamic files.

II,Forward Command

<Jsp (preferred for SUN Enterprise Applications): forward> tagRedirects a static html/jsp file (preferred for SUN Enterprise Applications) or a program segment.

Syntax:
<Jsp (preferred for SUN Enterprise Applications): forward page = "path"}/>
Or
<Jsp (preferred for SUN Enterprise Applications): forward page = "path"}>
<Jsp (preferred for SUN Enterprise Applications): param name = "paramName" value = "paramValue"/> ......
</Jsp (preferred for SUN Enterprise Applications): forward>

Note:
1. page = "path" is an expression or a string.
2. <jsp (preferred for SUN Enterprise Applications): param> name specifies the parameter name and value specifies the parameter value. The parameter is sent to a dynamic file. The parameter can be one or more values, but the file must be a dynamic file. To pass multiple parameters, you can use multiple <jsp (preferred for SUN Enterprise Applications) files in one jsp (preferred for SUN Enterprise Applications ): param> sends multiple parameters to a dynamic file.

III,UseBean command

<Jsp (preferred for SUN Enterprise Applications): useBean> tagIt is used to create a BEAN instance on the jsp (preferred for SUN Enterprise Applications) page and specify its name and scope.

Syntax:
<Jsp (preferred for SUN Enterprise Applications): useBean id = "name" scope = "page | request | session | application" typeSpec/>
TypeSpec has the following possibilities:
Class = "className" | class = "className" type = "typeName" | beanName = "beanName" type = "typeName" | type = "typeName" |

Note:
You must use class or type instead of both class and beanName. BeanName indicates the Bean name in the form of "a. B. c ".

IV,GetProperty command

<Jsp (preferred for SUN Enterprise Applications): getProperty> tagReturns the BEAN property value, converts it to a string, and inserts it into the output page.

Syntax:
<Jsp (preferred for SUN Enterprise Applications): getProperty name = "name" property = "propertyName"/>

Note:
1. Before using <jsp (preferred for SUN Enterprise Applications): getProperty>, you must use <jsp (preferred for SUN Enterprise Applications): useBean> to create it.
2. You cannot use <jsp (preferred for SUN Enterprise Applications): getProperty> to retrieve an indexed attribute.
3. It can be used with the JavaBeans component <jsp (preferred for SUN Enterprise Applications): getProperty>, but cannot be used with Enterprise Java Bean.

V,SetProperty command

<Jsp (preferred for SUN Enterprise Applications): setProperty> tagUsed to set the attribute values in Bean.

Syntax:
<Jsp (preferred for SUN Enterprise Applications): setProperty name = "beanName" prop_expr/>
Among them, prop_expr has the following possible situations:
Property = "*" | property = "propertyName" | property = "propertyName" param = "parameterName" | property = "propertyName" value = "propertyValue"