Krazykoder struts2 data_tags
- 1. Struts 2 DATA Tags
- 2. What are DATA Tags ? Focus on ways to extract data from ValueStack. Manipulate ValueStack via set and push. Provides many types pf tags as a, action, debug,i18n, include, param, property, push, set, text, url, bean.
- 3. Type of DATA Tags 1. Action : Calls an action from within a page, and can be configured to render the results. Also used as dynamic include. Ex : <s:action name="actionTagAction" executeResult="true" /> 2. I18n : Places additional resource bundles on the stack to use for internationalization text. Ex : <s:i18n name="myCustomBundle"> The i18n value for key aaa.bbb.ccc in myCustomBundle is <s:property value="text('aaa.bbb.ccc')" /> </s:i18n> 3. Push : Pushes a value on to the value stack. Ex : <s:push value="user"> <s:propery value="firstName" /> <s:propery value="lastName" /> </s:push> 4. Set : Takes a value from the value stack and sets it as an attribute under a specific HTTP scope (application, session, request,page or action). Ex : <s:set name="personName" value="person.name"/> Hello, <s:property value="#personName"/>. How are you? Contd….
- 4. Type of DATA Tags 5. Date : Formats a Date object. Ex : <s:date name="person.birthday" format="dd/MM/yyyy" /> 6. Include : Makes a call and dynamically includes the result in the current page. Ex : <s:include value="myJsp.jsp"> <s:param name="param1" value="value2" /> <s:param name="param2" value="value2" /> </s:include> 7. Text : Retrieves a text value from a resource bundle for a specified key.. Ex : <s:text name="format.money"><s:param name="value" value="myMoneyValue"/></s:text> 8. URL : Generates a valid URL (including the servlet context or any portlet information) assigning it to an id in the value stack. Ex : <s:url value="editGadget.action"> <s:param name="id" value="%{selected}" /> </s:url> etc…. … .Contd.
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