我的需求是 访问一个网页，这个网页会发送一个ajax请求，我要拦截他，获取到json
首先我们自己写一个NetworkDelegate  只需要继承DefaultNetworkDelegate 即可。
然后写你需要重写的方法。
因为要模拟手机端访问所以我要重写onBeforeSendHeaders 
因为要接收ajax返回内容故我需要重写onDataReceived

public class JackNetworkDelegate4A47 extends DefaultNetworkDelegate
{
    private  JFrame frame;
    private BrowserView browserView;
    
    public JackNetworkDelegate4A47( JFrame frame,BrowserView browserView)
    {
        this.frame = frame;
        this.frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        this.browserView = browserView;
    }
    
    
    public void onBeforeSendHeaders(BeforeSendHeadersParams params)
    {
        params.getHeadersEx().setHeader("User-Agent", "Mozilla/5.0 (Linux; U; Android 6.0.1; zh-cn; ZUK Z2131 Build/MMB29M) AppleWebKit/537.36 (KHTML, like Gecko)Version/4.0 Chrome/37.0.0.0 MQQBrowser/7.5 Mobile Safari/537.36");
        params.getHeadersEx().setHeader("upgrade-insecure-requests","1");
        params.getHeadersEx().setHeader("cache-control","max-age=0");
        params.getHeadersEx().setHeader("accept-encoding","gzip, deflate, sdch, br");
        params.getHeadersEx().setHeader("accept-language","zh-CN,zh;q=0.8");
        params.getHeadersEx().setHeader("upgrade-insecure-requests","1");
        params.getHeadersEx().removeHeader("Connection");
    }
    public void onDataReceived(DataReceivedParams params)
    {
       // System.out.println(params.getURL());
        if(params.getURL().contains("webmain.php"))
        {
            System.out.println(new String(params.getData()));
            params.getBrowser().dispose();
            frame.dispose();
            frame = null;
        }
        // params.getData()
    }
    
}

在主线程

final Browser browser = new Browser();
        BrowserView browserView = new BrowserView(browser);
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.add(browserView, BorderLayout.CENTER);
        frame.setSize(700, 500);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
        // Handle proxy authorization.
        browser.getContext().getNetworkService().setNetworkDelegate(new JackNetworkDelegate4A47(frame,browserView));  
        browser.loadURL("https://api.47ks.com/webcloud/?v=http://film.sohu.com/album/9353216.html?channeled=1200110001&type=lemid");