webview获取网页源代码分两种,一种是js执行前,一种是js执行后
1.js执行前
调用getHtml即可public static String getHtml(String path) throws Exception { // 通过网络地址创建URL对象 URL url = new URL(path); // 根据URL // 打开连接,URL.openConnection函数会根据URL的类型,返回不同的URLConnection子类的对象,这里URL是一个http,因此实际返回的是HttpURLConnection HttpURLConnection conn = (HttpURLConnection) url.openConnection(); // 设定URL的请求类别,有POST、GET 两类 conn.setRequestMethod("GET"); //设置从主机读取数据超时(单位:毫秒) conn.setConnectTimeout(5000); //设置连接主机超时(单位:毫秒) conn.setReadTimeout(5000); // 通过打开的连接读取的输入流,获取html数据 InputStream inStream = conn.getInputStream(); // 得到html的二进制数据 byte[] data = readInputStream(inStream); // 是用指定的字符集解码指定的字节数组构造一个新的字符串 String html = new String(data, "utf-8"); return html; } public static byte[] readInputStream(InputStream inStream) throws Exception { ByteArrayOutputStream outStream = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, len); } inStream.close(); return outStream.toByteArray(); }
2.js执行后
启用jssettings.setJavaScriptEnabled(true);定义接口private final class InJavaScriptLocalObj { public void showSource(String html2) { html = html2; } }webview添加自定义接口webView.addJavascriptInterface(new InJavaScriptLocalObj(), "local_obj");添加webviewClient回调,执行指定jsprivate WebViewClient webViewClient = new WebViewClient() { @Override public void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); view.loadUrl("javascript:window.local_obj.showSource('<head>'+" + "document.getElementsByTagName('html')[0].innerHTML+'</head>');"); }在需要获取网页源代码的地方后去html变量即可
android webview获取网页源代码,js执行前后
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转载自blog.csdn.net/tan6458/article/details/75005454
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