使用 Prism.js 在 WebView 中显示 HTML答案

【问题标题】：Show HTML in WebView using Prism.js使用 Prism.js 在 WebView 中显示 HTML
【发布时间】：2019-01-07 17:42:11
【问题描述】：

我无法使用Prism.js 在JavaFX 的WebVew 中显示HTML。我能够成功显示Java 示例，但HTML 示例似乎希望显示您访问站点时出现的HTML，而不仅仅是显示语法字符串。使用Prism.js 在JavaFX 的WebView 中显示HTML 的正确方法是什么？

Java 示例（正确显示）

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;

/**
 *
 * @author blj0011
 */
public class JavaFXApplication319 extends Application
{

    @Override
    public void start(Stage primaryStage)
    {
        String javaString = "/* HelloWorld.java\n"
                + " */\n"
                + "\n"
                + "public class HelloWorld\n"
                + "{\n"
                + " public static void main(String[] args) {\n"
                + "     System.out.println(\"Hello World!\");\n"
                + " }\n"
                + "}";

        String htmlString = "<!DOCTYPE html>\n"
                + "<html>\n"
                + "<head>"
                + "<link href=\"" + getClass().getResource("prism.css") + "\"" + " rel=\"stylesheet\"" + " type=\"text/css\"" + " />\n"
                + "<script src=\"" + getClass().getResource("prism.js") + "\"" + " type=\"text/javascript\"" + "></script>\n"
                + "</head>"
                + "<body>\n"
                + "\n"
                + "<h1>My First Heading</h1>\n"
                + "\n"
                + "<p>My first paragraph.</p>\n"
                + "\n"
                + "<pre>"
                + " <code class=\"language-java\">\n"
                + javaString
                + "</code>\n"
                + "</pre>\n"
                + "</body>\n"
                + "</html>";

        WebView webView = new WebView();
        WebEngine engine = webView.getEngine();
        engine.setJavaScriptEnabled(true);
        engine.loadContent(htmlString);

        StackPane root = new StackPane(webView);

        Scene scene = new Scene(root, 500, 400);

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        launch(args);
    }

}

HTML 示例（未正确显示）

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.scene.web.WebEngine;
import javafx.scene.web.WebView;
import javafx.stage.Stage;

/**
 *
 * @author blj0011
 */
public class JavaFXApplication319 extends Application
{

    @Override
    public void start(Stage primaryStage)
    {
        String htmlStringPreCode = "<!DOCTYPE html>\n"
                + "<html>\n"
                + "<head>\n"
                + "</head>\n"
                + "<body>\n"
                + "This is a Test\n"
                + "</body>\n"
                + "</html>\n";

        String htmlString = "<!DOCTYPE html>\n"
                + "<html>\n"
                + "<head>"
                + "<link href=\"" + getClass().getResource("prism.css") + "\"" + " rel=\"stylesheet\"" + " type=\"text/css\"" + " />\n"
                + "<script src=\"" + getClass().getResource("prism.js") + "\"" + " type=\"text/javascript\"" + "></script>\n"
                + "</head>"
                + "<body>\n"
                + "\n"
                + "<h1>My First Heading</h1>\n"
                + "\n"
                + "<p>My first paragraph.</p>\n"
                + "\n"
                + "<pre>"
                + " <code class=\"language-html\">\n"
                + htmlStringPreCode
                + "</code>\n"
                + "</pre>\n"
                + "</body>\n"
                + "</html>";

        WebView webView = new WebView();
        WebEngine engine = webView.getEngine();
        engine.setJavaScriptEnabled(true);
        engine.loadContent(htmlString);

        StackPane root = new StackPane(webView);

        Scene scene = new Scene(root, 500, 400);

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        launch(args);
    }

}

预期输出

Java：1.8.0_171

图片中的Prism.js下载也选择了Java

【问题讨论】：

标签： java javafx webview java-8 prism.js

【解决方案1】：

Html 代码需要先转义（这样才能显示为纯文本）。

看到这个question，两种解决方案都有效：

htmlStringPreCode = htmlStringPreCode.replace("<", "&lt;");

//or

htmlStringPreCode = "<script type=\"prism-html-markup\">" + htmlStringPreCode + "</script>";

【讨论】：