自定义协议处理程序-Custom Protocol Handler · 前端开发手册

JxBrowser 6.11及更高版本提供了API，允许您处理标准（例如HTTP，HTTPS，FTP等）和非标准（例如JAR，MYPROTOCOL等）协议的URL请求。以下示例演示如何为标准HTTPS协议注册协议处理程序以及如何使用自定义数据进行响应： ``` import com.teamdev.jxbrowser.chromium.*; import com.teamdev.jxbrowser.chromium.swing.BrowserView; import javax.swing.*; import java.awt.*; public class ProtocolHandlerSample { public static void main(String[] args) { Browser browser = new Browser(); BrowserView view = new BrowserView(browser); JFrame frame = new JFrame(); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.add(view, BorderLayout.CENTER); frame.setSize(700, 500); frame.setLocationRelativeTo(null); frame.setVisible(true); BrowserContext browserContext = browser.getContext(); ProtocolService protocolService = browserContext.getProtocolService(); protocolService.setProtocolHandler("https", new ProtocolHandler() { @Override public URLResponse onRequest(URLRequest request) { URLResponse response = new URLResponse(); String html = "<html><body><p>Hello there!</p></body></html>"; response.setData(html.getBytes()); response.getHeaders().setHeader("Content-Type", "text/html"); return response; } }); browser.loadURL("https://google.com/"); } } ``` 您可以使用相同的方法来处理自定义的非标准协议（例如“teamdev”）。例如： ``` import com.teamdev.jxbrowser.chromium.*; import com.teamdev.jxbrowser.chromium.swing.BrowserView; import javax.swing.*; import java.awt.*; public class ProtocolHandlerSample { public static void main(String[] args) { Browser browser = new Browser(); BrowserView view = new BrowserView(browser); JFrame frame = new JFrame(); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.add(view, BorderLayout.CENTER); frame.setSize(700, 500); frame.setLocationRelativeTo(null); frame.setVisible(true); BrowserContext browserContext = browser.getContext(); ProtocolService protocolService = browserContext.getProtocolService(); protocolService.setProtocolHandler("teamdev", new ProtocolHandler() { @Override public URLResponse onRequest(URLRequest request) { URLResponse response = new URLResponse(); String html = "<html><body><p>Hello there!</p></body></html>"; response.setData(html.getBytes()); response.getHeaders().setHeader("Content-Type", "text/html"); return response; } }); browser.loadURL("teamdev://custom-request/"); } } ``` 也可以为JAR协议注册自定义协议处理程序。它允许您直接从包含在应用程序类路径中的JAR库加载HTML文件： ``` import com.teamdev.jxbrowser.chromium.*; import com.teamdev.jxbrowser.chromium.swing.BrowserView; import javax.swing.*; import java.awt.*; import java.io.DataInputStream; import java.io.InputStream; import java.net.URL; public class ProtocolHandlerSample { public static void main(String[] args) { final Browser browser = new Browser(); BrowserView view = new BrowserView(browser); JFrame frame = new JFrame(); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.add(view, BorderLayout.CENTER); frame.setSize(700, 500); frame.setLocationRelativeTo(null); frame.setVisible(true); BrowserContext browserContext = browser.getContext(); ProtocolService protocolService = browserContext.getProtocolService(); protocolService.setProtocolHandler("jar", new ProtocolHandler() { @Override public URLResponse onRequest(URLRequest request) { try { URLResponse response = new URLResponse(); URL path = new URL(request.getURL()); InputStream inputStream = path.openStream(); DataInputStream stream = new DataInputStream(inputStream); byte[] data = new byte[stream.available()]; stream.readFully(data); response.setData(data); String mimeType = getMimeType(path.toString()); response.getHeaders().setHeader("Content-Type", mimeType); return response; } catch (Exception ignored) {} return null; } }); // Assume that we need to load a resource related to this class in the JAR file browser.loadURL(ProtocolHandlerSample.class.getResource("index.html").toString()); } private static String getMimeType(String path) { if (path.endsWith(".html")) { return "text/html"; } if (path.endsWith(".css")) { return "text/css"; } if (path.endsWith(".js")) { return "text/javascript"; } return "text/html"; } } ```