Question

我正在尝试从此网站下载链接： http://prices.shufersal.co.il

当我尝试从网站上自己下载它工作正常，但是，当我尝试从代码中下载链接时，它会说FileNotFoundException - 404状态代码。

以下是一个链接： http://pricesprodpublic.blob.core.windows.net/price/Price7290027600007-001-201601290030.gz?sv=2014-02-14&sr=b&sig=1ksETqGvmSbWGnqQ6NgPGCqfsX4r%2BluSvcmf%2F1ppj8Q%3D&se=2016-01-28T23%3A24%3A43Z&sp=r

我认为每次请求页面时都会提供不同的下载链接，但我仍然无法从代码中下载它。

这是我的代码：

public void download() {
    for (int currType = 1; currType <= ShufersalConstants.TYPES.size(); currType++) {
        String link = BASE_URL + CAT_MODIFIER + currType + MODIFIER_SEPERATOR + STORE_MODIFIER + 0;

        StringBuilder a = HttpUtils.sendGetRequest(link);

        System.out.println(a.toString());

        fetchLinks(a.toString());
    }
}

@Override
public ArrayList<String> fetchLinks(String htmlPage) {
    Logger.log("Fetching the links from the HTML page");

    // Creating new list that will hold all the links for the .gz files
    ArrayList<String> links = new ArrayList<String>();

    // Getting the start position of the first download link
    int startLinkPos = htmlPage.indexOf("http://pricesprodpublic.blob.core.windows.net");

    // Getting the end position of the first download link
    int endLinkPos = htmlPage.indexOf(" target=", startLinkPos);

    // Running over the string until there are no more download links
     while (startLinkPos != -1) {
         links.add(htmlPage.substring(startLinkPos, endLinkPos - 1));

         HttpUtils.getGZStream(htmlPage.substring(startLinkPos, endLinkPos - 1));

     // Returning the list of links
     return (links);
}

HttpUtils类对网址执行常规请求。

这是HttpUtils类中的方法：

/**
 * The function gets GZ file from the link that the function gets
 * @param link The link for the GZ file
 * @return GZStream to use with
 */
public static GZIPInputStream getGZStream(String link) {
    HttpURLConnection connection = null;  
    GZIPInputStream gzStream = null;

    try {
        // Create connection using the link we get as a parameter
        URL url = new URL(link);
        connection = (HttpURLConnection) url.openConnection();

        // Get the response from the connection after sending the request
        InputStream is = (InputStream) connection.getInputStream();

        // Creating the GZ stream base on the InputStream
        gzStream = new GZIPInputStream(is);
    } catch (Exception e) {
        Logger.logError("An ERROR occured while trying to get GZ stream");
        e.printStackTrace();
    }

    // Returning the response
    return (gzStream);
}

有人可以帮我写这样的东西吗？我真的卡住了，需要下载那些文件..

感谢。

尝试访问html页面时，FileNotFoundException包含404代码

0 个答案: