Android从WebView中获取html，得到页面显示的文本

private void initView() {    WebView mWebView = findViewById(R.id.webview);    mWebView.loadUrl("file:///android_asset/book/GUID-0B7E066B-D444-4C7C-918F-339F9D7B5319.html");    //使webview支持javascript    WebSettings mSetting = mWebView.getSettings();    mSetting.setJavaScriptEnabled(true);    //添加一个js交互对象    mWebView.addJavascriptInterface(new InJavaScriptLocalObj(), "java_obj");    //添加一个WebViewClient监听状态，并且在完成时通过js调用java对象的方法    mWebView.setWebViewClient(new WebViewClient() {        @Override        public void onPageFinished(WebView view, String url) {            view.loadUrl("javascript:window.java_obj.getSource(document.documentElement.outerHTML);void(0)");            super.onPageFinished(view, url);        }    });}

getSource中解析

public final class InJavaScriptLocalObj {    //一定也要加上这个注解,否则没有用    @JavascriptInterface    public void getSource(String html) {    //获取html中的所有文本        String regFormat = "\\s*|\t|\r|\n";        String regTag = "<[^>]*>";        speechText = html.replaceAll(regFormat,"").replaceAll(regTag,"");        //删掉style        speechText = speechText.substring(speechText.indexOf("}") + 1);        speechText = speechText.substring(speechText.indexOf("}") + 1);        //删掉title        Document doc = Jsoup.parseBodyFragment(html);        String title = doc.select("title").text();        speechText = speechText.replaceFirst(title,"");        //删除图片名称        Elements imgs = doc.getElementsByClass("guid-img");        if (imgs != null && !imgs.isEmpty()) {            for(int i = 0;i < imgs.size();i++){                String image = imgs.get(i).text();                Log.i("YYYY","delete pic name " + image);                speechText = speechText.replaceAll(image,"");            }        }        //删掉表格        String table = doc.select("table").text();        table = table.replaceAll(" ","");        speechText = speechText.replaceAll(table,"");        //最后输出        Log.i("YYYY","final text = " + speechText);    }}

通过jsoup提取标签，需要在app的build.gradle中添加:

implementation 'org.jsoup:jsoup:1.9.2'

getSource中解析

通过jsoup提取标签，需要在app的build.gradle中添加:

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