包括动态生成面板的方法 [英] Ways to include a dynamically generated facelet

问题描述

在当前项目中，我需要创建一个面板，其中包含用户在应用程序其他位置创建的HTML内容。这个内容可以很容易地插入：

 < h：outputText value =＃{myBean.dynamicHTMLContent}escape = 假/> 
  

一个示例内容：

 < p>用户文本< / p> 
  

现在我们需要给予用户更多的自由，并允许他在HTML代码中使用令牌，稍后由应用程序解决：

 < p>用户文本< / p>< p>用户图像：{niceImage }< / p为H. 
  

应用程序在 myBean.dynamicHTMLContent 中解析用户内容，并替换 {niceImage（param）} 与

 < a4j：mediaOutput element =imgcreateContent ={myBean .generateNiceImage}/> 
  

这已经是一个面孔代码片段，无法在 h中进行评估和呈现：outputText 。

在EL表达式尚未评估的阶段，我正在寻找一种将这种动态内容包含在脸孔中的好方法。像

 < ui：include src =src/> 
  

但动态组件将是最佳解决方案。

$ b $任何想法？

解决方案

最终，我用简单的方法将用户HTML中的所有自定义（大括号）令牌替换为相应的JSF元素，并生成一个临时的 ui：composition facelet file：

  public String getUserHtmlContentPath（） {
 
文件temp = File.createTempFile（userContent，.tmp）; 
 temp.deleteOnExit（）; 
 
 FileWriter fw = new FileWriter（temp）; 
 fw.write（getUserHtmlContentComposition（））; 
 fw.close（）; 
 
返回file：//+ temp.getAbsolutePath（）; 
} 
  

和父面孔：

 < ui：include src =＃{myBean.userHtmlContentPath}/> 
  

In current project I need to create a panel that will contain an HTML content created by the user elsewhere in the application. This content can be easily inserted like this:

<h:outputText value="#{myBean.dynamicHTMLContent}" escape="false"/>

An example content:

<p>User text</p>

Now we need to give the user more freedom and allow him to use tokens in the HTML code that will be resolved by the application later:

<p>User text</p><p>User image: {niceImage}</p>

The application parses user content in myBean.dynamicHTMLContent and replaces {niceImage(param)} with

<a4j:mediaOutput element="img" createContent="{myBean.generateNiceImage}"/>

This is already a facelet snippet and cannot be evaluated and rendered in h:outputText.

I was looking for a good way to include this kind of dynamic content within a facelet at the stage when EL expressions are not yet evaluated. Something like

<ui:include src="src"/>

but for dynamic components would be the best solution.

Any ideas?

解决方案

Eventually I took the easy way by replacing all custom (curly braces) tokens in the user HTML with corresponding JSF elements and generating a temporary ui:composition facelet file:

public String getUserHtmlContentPath() {

   File temp = File.createTempFile("userContent", ".tmp");
   temp.deleteOnExit();

   FileWriter fw = new FileWriter(temp);
   fw.write(getUserHtmlContentComposition());
   fw.close();

   return "file://" + temp.getAbsolutePath(); 
}

and in the parent facelet:

<ui:include src="#{myBean.userHtmlContentPath}"/>

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