如何下载放置在图像按钮中的文件 - HTMLUNIT

Question

Download a file by clicking a image button.

I've this link

I've been trying to download the files (two save icon image buttons). When i click the image it prompts to download zip file.

This is the tag as seen in page's VIEWSOURCE of buttons

<input type="image" name="ctl00$m$g_b265ad4d_cd49_41f3_a9f2_0090f0aa5504$ctl00$gvBidSetsFile$ctl02$ImageButton1" id="ctl00_m_g_b265ad4d_cd49_41f3_a9f2_0090f0aa5504_ctl00_gvBidSetsFile_ctl02_ImageButton1" title="Download" src="/SiteAssets/images/saveitem.gif" style="height:18px;width:18px;border-width:0px;">

    WebClient client = new WebClient(BrowserVersion.FIREFOX_38);
    HtmlPage homePage = null;
   // Document doc = null;  
    String base="https://bidset.nycsca.org/SitePages/Obtain%20Solicitation.aspx?SN=16-15323D-1&ReqType=Solicitation&IsDlg=1&IsDlg=1";

    try {
        client.getOptions().setUseInsecureSSL(true);
    client.setAjaxController(new NicelyResynchronizingAjaxController());
    client.waitForBackgroundJavaScript(1000);
    client.waitForBackgroundJavaScriptStartingBefore(1000);
    client.getOptions().setThrowExceptionOnFailingStatusCode(false);
    client.getOptions().setThrowExceptionOnScriptError(false);

    homePage = client.getPage(base);
    synchronized (homePage) {
        homePage.wait(5000);
    }
    System.out.println("file Page : " + homePage.getUrl());
   // Document dd = Jsoup.parse(homePage.asXml());
    HtmlInput docs= homePage.getFirstByXPath("//input[@id='ctl00_m_g_b265ad4d_cd49_41f3_a9f2_0090f0aa5504_ctl00_gvBidSetsFile_ctl02_ImageButton1']");

        homePage = bidDocs.click();

Questions: As I get

HtmlInput docs =  homePage.getFirstByXPath
 ("//input[@id='ctl00_m_g_b265ad4d_cd49_41f3_a9f2_0090f0aa5504_ctl00_gvBidSetsFile_ctl02_ImageButton1']");

Is it ok to perform,

homePage = bidDocs.click();

here clicking on the save icon downloads file.

1. I m confused how could I download this file with help of HTMLUNIT . I want to download file in my local drive .

2. Is it possible to get url link of homepage after (homePage = bidDocs.click();)

ie store link , String docurl=get homePage's link . ???? String docurl=get homePage's link . ????

3. If i could get the link I can use BufferedStream to download file .

    File file = new File("C:/TRY/file/abc.zip"); BufferedInputStream in = null; FileOutputStream fout = null; try { in = new BufferedInputStream(new URL(docUrl).openStream()); fout = new FileOutputStream(file); final byte data[] = new byte[1024]; int count; while ((count = in.read(data, 0, 1024)) != -1) { fout.write(data, 0, count); } } finally { if (in != null) { in.close(); } if (fout != null) { fout.close(); } }

I've to use HTMLUNIT here because it is javascript , iframe site. Im thankful for you help.

Thank you verymuch.

Answer 1

Selecting the file tag

 HtmlInput download = pageCheck.getByXPath("//input[@title='Download']");

and for streamming

 download.click().getWebResponse().getContentAsStream()