在 liferay 中编辑消息 portlet

Question

import java.io.IOException;
import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;
import javax.portlet.PortletPreferences;
import javax.portlet.ReadOnlyException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.portlet.ValidatorException;

import com.liferay.util.bridges.mvc.MVCPortlet;

public class GreetingMessage extends MVCPortlet {

public static final String GREETING = "greeting";
public static final String DEFAULT_GREETING = "Hello! It's my default greeting message";

@Override
public void render(RenderRequest request, RenderResponse response)
        throws IOException, PortletException {

    PortletPreferences preferences = request.getPreferences();
    request.setAttribute(GREETING,
            preferences.getValue(GREETING, DEFAULT_GREETING));
    super.render(request, response);
}

public void updateGreeting(ActionRequest request, ActionResponse response)
        throws ValidatorException, IOException, ReadOnlyException {

    String greeting = request.getParameter("greeting");
    PortletPreferences prefs = request.getPreferences();

    if (greeting != null) {
        prefs.setValue(GREETING, greeting);
        prefs.store();
        request.setAttribute(GREETING, greeting);
    }
}

}

view.jsp:

<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %> 
<portlet:defineObjects /> 

<p>${greeting}</p>

<portlet:renderURL var="editGreetingURL">
      <portlet:param name="mvcPath" value="/html/greetingmessage/edit.jsp"/>
</portlet:renderURL>

<p><a href="${editGreetingURL}">Edit greeting</a></p>

edit.jsp

<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<%@ taglib uri="http://liferay.com/tld/aui" prefix="aui" %>
<%@ page import="javax.portlet.PortletPreferences" %>

<portlet:defineObjects />

<portlet:actionURL name="updateGreeting" var="updateGreetingURL"> 
 </portlet:actionURL>

<aui:form action="<%= updateGreetingURL %>" method="post">
<aui:input label="greeting" name="greeting" type="text" value="${greeting}" />
<aui:button type="submit" />
</aui:form>

<portlet:renderURL var="viewGreetingURL"> 
     <portlet:param name="mvcPath" value="/html/greetingmessage/view.jsp" />
</portlet:renderURL>

<p><a href="${viewGreetingURL}">&larr; AND NOW IT'S BACK</a></p>

这是我的 "edit-greeting" portlet 的测试代码。问题是，如何进行本地化？？？我已经阅读了很多文档，但这都是徒劳的。我在 WEB-INF 文件夹中创建 src/language.properties 和 src/language_es.properties。接下来我该怎么办？请帮帮我。 @Shivam

Answer 1

回答你的问题 1）您可以在渲染方法中处理您的属性和 portlet 首选项，并将它们设置为渲染请求中的属性，随后可以通过一些脚本语言（如 jstl）在您的 jsp 中读取它们 2) portlet.xml 文件无需更改。 init params 顾名思义就是添加了初始化portlet视图所需的一些参数。

您需要对渲染方法进行以下更改

public void render(RenderRequest req,RenderResponse res) throws IOException, PortletException
{
    String greeting = req.getParameter("greeting");
    PortletPreferences prefs = req.getPreferences();
    String defaultGreeting="Hello! Welcome to our portalOLOLOLOLOL.";

    if(prefs.getValue("greeting","true")==null)
    {
        prefs.setValue("greeting", defaultGreeting);
    }
    if (greeting != null) 
    {
        prefs.setValue("greeting", greeting);
        prefs.store();
        req.setAttribute("greeting", prefs.getValue("greeting","true"));
    }
    else
    {
        req.setAttribute("greeting", prefs.getValue("greeting","true"));
    }
    super.render(req,res);
}

view.jsp 和 edit.jsp 中不需要任何更改（除了删除代码），因此我忘了提及。至于 render 方法，最好的方法肯定是使用 action url 并使用 action 方法，但是由于您似乎正在尝试一些方法并对您的方法进行最小的更改，所以我保留了它 render只要。至于代码，prefs.getValue("greeting","true") 检查某个属性是否存在于 portlet 首选项中。

已更新流程操作

public class NewPortlet 扩展了 MVCPortlet {

public static final String GREETING="greeting";

@Override
public void render(RenderRequest req,RenderResponse res) throws IOException, PortletException
{
    PortletPreferences prefs = req.getPreferences();
    String defaultGreeting="Hello! Welcome to our portalOLOLOLOLOL.";

    if(prefs.getValue(GREETING,"true")==null)
    {
        prefs.setValue(GREETING, defaultGreeting);
        prefs.store();
    }
    req.setAttribute(GREETING, prefs.getValue(GREETING,"true"));
    super.render(req,res);
}

public void updateGreeting(ActionRequest req,ActionResponse res) throws ValidatorException, IOException, ReadOnlyException
{
    String greeting = req.getParameter("greeting");
    PortletPreferences prefs = req.getPreferences();

    if (greeting != null) 
    {
        prefs.setValue(GREETING, greeting);
        prefs.store();
        req.setAttribute(GREETING, greeting);
    }

}

}

编辑中更新jsp

  <portlet:actionURL name="updateGreeting" var="updateGreetingURL"> 
 </portlet:actionURL>

<aui:form action="<%= updateGreetingURL %>" method="post">
<aui:input label="greeting" name="greeting" type="text" value="${greeting}" />
<aui:button type="submit" />
</aui:form>

在 liferay 中编辑消息 portlet

Edit message portlet in liferay

liferay

liferay-6

liferay-ide