PV230 - cvičení 3 - příklady + postup
PV230 - cvičení 3
Resource serving
Statický obsah (obrázky)
Do view.jsp přidat a upravit následující řádky
...
<portlet:resourceURL = id= cacheability= />var "detailIconURL" "<%=ICON_DETAIL %>" "cacheLevelFull"
<%-- pridat --%>
<c:forEach = items= >var "product" "${products}"
<c:out value= /> <img src= alt= > <br> <%-- upravit"${product.name}" "${detailIconURL}" "detail"
--%>
</c:forEach>
...
Do CatalogConstants přidat
public ICON_DETAIL = ;static final String "/img/detail.png"
Dynamický obsah
Do view.jsp přidat
<portlet:resourceURL = id= />var "queryURL" "<%= RESOURCE_QUERY %>"
<script type= >"text/javascript"
jQuery(document).ready(function(){
jQuery('#${ns}query').autocomplete({
url: "${queryURL}"
});
});
</script>
...
<input type= name= id= autocomplete= > <%-- upravit --%>"text" "<%= PARAM_QUERY %>" "${ns}query" "off"
V CatalogPorltet přidat
@Override
void serveResource(ResourceRequest request, ResourceResponse response)public throws
PortletException, IOException {
resourceID = request.getResourceID();String
(RESOURCE_QUERY.equals(resourceID)) {if
serveAutocompleteQuery(request, response);
} {else
.serveResource(request, response);super
}
}
void serveAutocompleteQuery(ResourceRequest request, ResourceResponse response)private throws
IOException {
searchString = request.getParameter(PARAM_AUTOCOMPLETE_QUERY);String
(searchString == ) {if null
;return
}
PrintWriter out = ;null
{try
response.setContentType( );"text/plain"
out = response.getWriter();
(ProductDTO p : ServiceProvider.getCatalog().findProducts(searchString)) {for
out.println(p.getName());
}
} (IOException ex) {catch
// log error
} {finally
out.close();
}
}
Do CatalogConstants přidat
public PARAM_AUTOCOMPLETE_QUERY = ;static final String "q"
RESOURCE_QUERY = ;public static final String "query"
Meziportletová komunikace - veřejné parametry
Vytvoříme portlet Detail, který bude zobrazovat podrobné informace o produktu.
Vytvoříme package eu.ibacz.pv230.simpleshop.portlet.detail a v něm třídy DetailPortlet a DetailConstants.
DetailPortlet
@Override
void doView(RenderRequest request, RenderResponse response) PortletException,protected throws
IOException {
productId = request.getParameter(PARAM_PRODUCT_ID);String
(productId != ) {if null
id = .parseLong(productId);long Long
request.setAttribute(ATTRIBUTE_PRODUCT,
ServiceProvider.getCatalog().getProductById(id));
}
PortletRequestDispatcher dispatcher =
getPortletContext().getRequestDispatcher(JSP_VIEW);
dispatcher.include(request, response);
}
DetailConstants
public class DetailConstants SimpleShopConstants {extends
JSP_VIEW = ;public static final String "/WEB-INF/jsp/detail/view.jsp"
}
Vytvoříme složku /WEB-INF/jsp/detail a v ní jsp stránku s následujícím obsahem
<%@include file= %>"../init.jspf"
<f:setBundle basename= />"content.detail"
<%@page = %>import " eu.ibacz.pv230.simpleshop.portlet.detail.DetailConstants.*"static
<div id= >"${ns}detailView"
<h1><f:message key= /></h1>"ss-msg-product-detail"
<c:choose>
<c:when test= >"${product != }"null
<div>
<span class= ><f:message key= /></span>"label" "ss-msg-name"
<span><c:out value= /></span>"${product.name}"
</div>
<div>
<span class= ><f:message key= /></span>"label" "ss-msg-description"
<span><c:out value= /></span>"${product.description}"
</div>
<div>
<span class= ><f:message key= /></span>"label" "ss-msg-price"
<span><c:out value= /></span>"${product.price}"
</div>
</c:when>
<c:otherwise>
<f:message key= />"ss-msg-no-product-selected"
</c:otherwise>
</c:choose>
</div>
Vytvoříme properties soubor detail ve složce content s následujícími klíči
javax.portlet.title=Detail
ss-msg-product-detail=Product detail
ss-msg-name=Name
ss-msg-description=Description
ss-msg-price=Price
ss-msg-no-product-selected=No product selected.
V portlet.xml přidat Detail portlet a public render parametr
<portlet-app ... >
<portlet>
<portlet-name>Catalog</portlet-name>
<portlet-class>eu.ibacz.pv230.simpleshop.portlet.catalog.CatalogPortlet</portlet-class>
<supports>
<mime-type>text/html</mime-type>
<portlet-mode>view</portlet-mode>
</supports>
<supported-locale>en</supported-locale>
<supported-locale>cs</supported-locale>
<resource-bundle>content.catalog</resource-bundle>
<supported- -render-parameter>productId</supported- -render-parameter>public public
</portlet>
<portlet>
<portlet-name>Detail</portlet-name>
<portlet-class>eu.ibacz.pv230.simpleshop.portlet.detail.DetailPortlet</portlet-class>
<supports>
<mime-type>text/html</mime-type>
<portlet-mode>view</portlet-mode>
</supports>
<supported-locale>en</supported-locale>
<supported-locale>cs</supported-locale>
<resource-bundle>content.detail</resource-bundle>
<supported- -render-parameter>productId</supported- -render-parameter>public public
</portlet>
< -namespace>http:default //pv230.ibacz.eu/cv3</ -namespace>default
< -render-parameter>public
<identifier>productId</identifier>
<name>productId</name>
</ -render-parameter>public
</portlet-app>
Do liferay-portlet.xml
<portlet>
<portlet-name>Detail</portlet-name>
<instanceable> </instanceable>true
</portlet>
Do liferay-display.xml
<portlet id= />"Detail"
Do catalog/view.jsp přidat
<portlet:renderURL = >var "showDetailURL"
<portlet:param name= value= />"<%= PARAM_PRODUCT_ID %>" "${product.id}"
</portlet:renderURL>
<a href= >"${showDetailURL}"
<c:out value= /> <img src= alt= > <br>"${product.name}" "${detailIconURL}" "detail"
</a>