Question

我有Liferay MVC portlet示例guestbook-portlet正在运行

view.jsp就像

<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<%@ taglib uri="http://alloy.liferay.com/tld/aui" prefix="aui" %>
<%@ taglib uri="http://liferay.com/tld/ui" prefix="liferay-ui" %>

<portlet:defineObjects />
<jsp:useBean id="entries" class="java.util.ArrayList" scope="request"/>
<liferay-ui:search-container>
    <liferay-ui:search-container-results results="<%= entries %>" />

    <liferay-ui:search-container-row  className="com.liferay.docs.guestbook.model.Entry" modelVar="entry" >
        <liferay-ui:search-container-column-text property="message" />

        <liferay-ui:search-container-column-text property="name" />
    </liferay-ui:search-container-row>

    <liferay-ui:search-iterator />
</liferay-ui:search-container>

<aui:button-row cssClass="guestbook-buttons">

    <portlet:renderURL var="addEntryURL">

        <portlet:param name="mvcPath" value="/html/guestbook/edit_entry.jsp"></portlet:param>

    </portlet:renderURL>

    <aui:button onClick="<%= addEntryURL.toString() %>" value="add entry"></aui:button>




</aui:button-row>

当我呈现页面时，我在null中获得addEntryURL引用。

我的WEB-INF/src portlet类定义了addEntry公共方法：

public class NewPortlet extends MVCPortlet {

    public void addEntry(ActionRequest request, ActionResponse response) {
        try {

            PortletPreferences prefs = request.getPreferences();

            String[] guestbookEntries = prefs.getValues("guestbook-entries",
               new String[1]);

            ArrayList<String> entries = new ArrayList<String>();

            if (guestbookEntries != null) {

              entries = new ArrayList<String>(Arrays.asList(prefs.getValues(
                   "guestbook-entries", new String[1])));

            }

            String userName = ParamUtil.getString(request, "name");
            String message = ParamUtil.getString(request, "message");
            String entry = userName + "^" + message;

            entries.add(entry);

            String[] array = entries.toArray(new String[entries.size()]);

            prefs.setValues("guestbook-entries", array);

            try {

              prefs.store();

            } catch (IOException ex) {

              Logger.getLogger(NewPortlet.class.getName()).log(
                   Level.SEVERE, null, ex);

            } catch (ValidatorException ex) {

              Logger.getLogger(NewPortlet.class.getName()).log(
                   Level.SEVERE, null, ex);

            }

         } catch (ReadOnlyException ex) {

            Logger.getLogger(NewPortlet.class.getName()).log(
               Level.SEVERE, null, ex);

         }
    } 

    @Override
    public void render (RenderRequest renderRequest, RenderResponse renderResponse) 
            throws PortletException, IOException {

        PortletPreferences prefs = renderRequest.getPreferences();
        String[] guestbookEntries = prefs.getValues("guestbook-entries",
                new String[1]);

        if (guestbookEntries != null) {

            List<Entry> entries = parseEntries(guestbookEntries);

            renderRequest.setAttribute("entries", entries);
        }

        super.render(renderRequest, renderResponse);

    }

    private List<Entry> parseEntries (String[] guestbookEntries) {

        ArrayList<Entry> entries = new ArrayList();

        for (String entry : guestbookEntries) {
            String[] parts = entry.split("\\^", 2);
            Entry gbEntry = new Entry(parts[0], parts[1]);
            entries.add(gbEntry);
        }

        return entries;
    }

}

我有portlet.xml配置的操作，如

<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd" version="2.0">
    <portlet>
        <portlet-name>guestbook</portlet-name>
        <display-name>Guestbook</display-name>
        <portlet-class>com.test.NewPortlet</portlet-class>
        <init-param>
            <name>view-template</name>
            <value>/html/guestbook/view.jsp</value>
        </init-param>

但是，当我点击按钮时，网址为http://localhost:8080/null

Answer 1

我有和你一样的问题。

<aui:button onClick=...>完全不能工作，尽管它是Liferay网站上的示例。最后，我将<aui:button>更改为普通的html按钮，它可以正常工作。

<button class="btn" type="button" onClick="location.href = '<%= addEntryURL.toString() %>'">Add Entry</button>

Liferay MVC Portlet命令mvcPath为null

1 个答案: