Liferay学习笔记

1、页面参数传递
    在processAction方法中获取页面参数值
         String action_target = actionRequest.getParameter("action_target");
    将参数值传递到Render方法中
         actionResponse.setRenderParameter("action_target", action_target);
    在Render的doView方法中获取参数值
         String action_target = renderRequest.getParameter("action_target");
    将参数值传递回页面
         renderRequest.setAttribute("result", "from doView: " + action_target);
    在页面取得参数值
         <c:out value="${requestScope.result}"/>

 

2、页面信息国际化
    <liferay-ui:message key="cuss.username.success"/> 

 

         LanguageUtil.format(pageContext, "you-are-signed-in-as-x", signedInAs);
         LanguageUtil.get(pageContext, "add-new-product");
         you-are-signed-in-as-x=您已经以{0}身份登录

 

3、获取HttpServletRequest等对象
    HttpServletRequest servletRequest = PortalUtil.getHttpServletRequest(resourceRequest);

 

    HttpServletResponse servletResponse = PortalUtil.getHttpServletResponse(resourceResponse);

 

    HttpServletRequest servletRequest = PortalUtil.getHttpServletRequest(resourceRequest);
    ServletContext servletContext = servletRequest.getSession().getServletContext();

 

    ThemeDisplay themeDisplay = (ThemeDisplay)resourceRequest.getAttribute(WebKeys.THEME_DISPLAY);
    PortletDisplay portletDisplay = themeDisplay.getPortletDisplay();
    String portletId = portletDisplay.getId(); 
    PortletBag portletBag = PortletBagPool.get(portletId);
    ServletContext servletContext = portletBag.getServletContext();

 

4、Portal路径获取：
    ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute    (WebKeys.THEME_DISPLAY);
 
    //return  http://localhost:8080
    PortalUtil.getPortalURL(renderRequest);

 

    //return  /web/guest/home?uid=cjm
    PortalUtil.getLayoutURL(themeDisplay);

 

    //return  /E:/liferay6_tomcat/bundles/tomcat-6.0.29/webapps/ROOT/
    PortalUtil.getPortalWebDir();

 

    //return  http://localhost:8080/web/guest/home
    PortalUtil.getPortal().getLayoutFullURL(themeDisplay);

 

    //return  /web/guest/home?uid=cjm
    PortalUtil.getCurrentURL(renderRequest);

 

6、ROOT相关子目录的获取

    System.out.println("2. " + themeDisplay.getPathImage());    /image
    System.out.println("3. " + themeDisplay.getPathJavaScript());   /html/js
    System.out.println("4. " + themeDisplay.getPathMain());     /zh/c
    System.out.println("5. " + themeDisplay.getPathThemeCss());    /html/themes/classic/css
    System.out.println("6. " + themeDisplay.getPathThemeImages());   /html/themes/classic/imags
    System.out.println("7. " + themeDisplay.getPathThemeJavaScript());  /html/themes/classic/js
    System.out.println("8. " + themeDisplay.getPathThemeRoot());   /html/themes/classic

    System.out.println(themeDisplay.getPortalURL());  http://localhost:8080
    System.out.println(themeDisplay.getURLCurrent());  /zh/web/guest/kstd/convenienttravel
    System.out.println(themeDisplay.getURLHome());   http://localhost:8080/web/guest
    System.out.println(themeDisplay.getURLPortal());  http://localhost:8080

 

7、为控制面板创建Portlet
 一个Portlet如果需要显示在控制面板中，需要在/WEB-INF/liferay-portlet.xml文件中未Portlet添加如下内容：
      <!-- 菜单项分类，包括my、content、portal、server四种 -->
      <control-panel-entry-category>content</control-panel-entry-category>

     

      <!-- 菜单项在该分类中的相对位置 -->
      <control-panel-entry-weight>1.5</control-panel-entry-weight>