如何删除< script></script>之间的文本标签 [英] How to remove text between <script></script> tags

问题描述

我想删除< script></script> 标签之间的内容.我正在使用while循环手动检查模式和 iterating .但是，我在这行得到 StringOutOfBoundException :

I want to remove the content between <script></script>tags. I'm manually checking for the pattern and iterating using while loop. But, I'm getting StringOutOfBoundException at this line:

String script = source.substring(startIndex,endIndex-startIndex);

下面是完整的方法:

public static String getHtmlWithoutScript(String source) {
    String START_PATTERN = "<script>";
    String END_PATTERN = " </script>";
    while (source.contains(START_PATTERN)) {
        int startIndex=source.lastIndexOf(START_PATTERN);
        int endIndex=source.indexOf(END_PATTERN,startIndex);

        String script=source.substring(startIndex,endIndex);
        source.replace(script,"");
    }
    return source;
}

我在这里做错什么了吗?我正在得到 endIndex = -1 .谁能帮助我确定为什么我的代码被破坏了.

Am I doing anything wrong here? And I'm getting endIndex=-1. Can anyone help me to identify, why my code is breaking.

推荐答案

String text = "<script>This is dummy text to remove </script> dont remove this";
    StringBuilder sb = new StringBuilder(text);
    String startTag = "<script>";
    String endTag = "</script>";

    //removing the text between script
    sb.replace(text.indexOf(startTag) + startTag.length(), text.indexOf(endTag), "");

    System.out.println(sb.toString());

如果您也想删除脚本标签，请添加以下行:

If you want to remove the script tags too add the following line :

sb.toString().replace(startTag, "").replace(endTag, "")

更新:

如果您不想使用 StringBuilder ，则可以执行以下操作:

If you dont want to use StringBuilder you can do this:

    String text = "<script>This is dummy text to remove </script> dont remove this";
    String startTag = "<script>";
    String endTag = "</script>";

    //removing the text between script
    String textToRemove = text.substring(text.indexOf(startTag) + startTag.length(), text.indexOf(endTag));
    text = text.replace(textToRemove, "");

    System.out.println(text);

这篇关于如何删除< script></script>之间的文本标签的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！