Question

我在JS中有以下功能：

function replaceSrcc() {

    var elem = document.getElementsByTagName("embed")[0];
        copy = elem.cloneNode();
    copy.src = DataVideo;
    elem.parentNode.replaceChild(copy, elem);
}

我正在尝试使用Java中的HTML解析器将关键字DataVideo替换为其他值videoID：

if(tag instanceof ScriptTag){
      if("DataVideo".equals(tag.getAttribute("copy.src"))){
           tag.setAttribute("copy.src", videoID);
       }
};

然而，这不起作用。我假设我在copy.src标签中找到<script>元素时出错，我认为它不是属性，但我不确切知道如何找到它。

编辑：负责分析HTML的整个班级MyNodeVisitor看起来像这样：

public class MyNodeVisitor extends NodeVisitor {
        String name;
        String text;
        String storyText;
        String videoID;
        ArrayList<String> pictures;


        public MyNodeVisitor() {

        }

        public MyNodeVisitor(ArrayList<String> Pictures, String Name, String Text, String StoryText, String VideoId){
            this.name = Name;
            this.text = Text;
            this.storyText = StoryText;
            this.videoID = VideoId;
            this.pictures = Pictures;
        }

        public void visitStringNode (Text string)
        {
            if (string.getText().equals("DataName")) {
                string.setText(name);
            }

            else if (string.getText().equals("DataText")){
                  string.setText(text);
            }

            else if (string.getText().equals("DataStory")){
                  string.setText(storyText);
            }
        }

        @Override
        public void visitTag (Tag tag)
        {
            if(tag instanceof ImageTag){
                if("DataIcon".equals(tag.getAttribute("src"))){
                    tag.setAttribute("src", pictures.get(0));
                }
                else if("DataIcon2".equals(tag.getAttribute("src"))){
                    tag.setAttribute("src", pictures.get(1));
                }
                else if("DataIcon3".equals(tag.getAttribute("src"))){
                    tag.setAttribute("src", pictures.get(2));
                }
                else if("DataIcon4".equals(tag.getAttribute("src"))){
                    tag.setAttribute("src", pictures.get(3));
                }
                else if("DataIcon5".equals(tag.getAttribute("src"))){
                    tag.setAttribute("src", pictures.get(4));
                }
            }
            else if(tag instanceof ScriptTag){
                if(((ScriptTag) tag).getStringText().contains("DataVideo")){
                    String tagText = ((ScriptTag)tag).getStringText();
                    //String tagText = tagText.replaceAll("DataVideo",videoID);
                    }


                    /*NodeList nodes = ((ScriptTag)tag).getChildren();
                    for (int i = 0; i < nodes.size(); i++){
                        if (nodes.elementAt(i).getText().equals("DataVideo")){
                            nodes.elementAt(i).setText(videoID);*/
                        }

                    }
      }

}

编辑：这是预先准备好的HTML模板：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html lang="en">
<head>

 ....

</head>
<body>

<script>
function replaceSrcc() {

    var elem = document.getElementsByTagName("embed")[0];
        copy = elem.cloneNode();
    copy.src = DataVideo;
    elem.parentNode.replaceChild(copy, elem);
    } 


    if (window.addEventListener){
         window.addEventListener('load', replaceSrcc, false);
    } else if (window.attachEvent) {
        window.attachEvent('onload', replaceSrcc);
    }

</script>

<h1 align="center">DataName</h1>

<div class="tabber">



     <div class="tabbertab" bgcolor="blue">
      <h2 color="red">Info </h2>
      <p>DataText</p>
     </div>

     <div class="tabbertab">
      <h2>Story from TIME</h2>
      <p>DataStory</p>
     </div> 

     <div class="tabbertab">
      <h2>Pictures</h2>
        <div id="album">
            <ul class="gallery">
                <li><a href="#nogo" tabindex="1">1<img src=DataIcon alt="landscape image 1" title="landscape image 1" /></a></li>
                <li><a href="#nogo" tabindex="1">2<img src=DataIcon2 alt="landscape image 2" title="landscape image 2" /></a></li>
                <li><a href="#nogo" tabindex="1">3<img src=DataIcon3 alt="portrait image 1" title="portrait image 1" /></a></li>
                <li><a href="#nogo" tabindex="1">4<img src=DataIcon4 alt="portrait image 2" title="portrait image 2" /></a></li>
                <li><a href="#nogo" tabindex="1">5<img src=DataIcon5 alt="landscape image 3" title="landscape image 3" /></a></li>
            </li>
            </ul>
        </div>   
     </div>

     <div class="tabbertab">
      <h2>Video</h2>

        <object width="640" height="360">
        <param name="movie" value="https://www.youtube.com/v/M7lc1UVf-VE?version=3"></param>
        <param name="allowFullScreen" value="true"></param>
        <param name="allowScriptAccess" value="always"></param>
        <embed src=DataVideo type="application/x-shockwave-flash" allowfullscreen="true" allowScriptAccess="always" width="640" height="360"></embed>
    </object>
           </div>
    </div>

</body>
</html>

如何用HTML解析器替换<script>标记中的值？</script>

}

0 个答案: