如何从这个站点获取SRC？[副本]

Question

try {
            Document pageMeteo = Jsoup.connect("https://radar.veg.by/kiev/")
                    .userAgent("Chrome/4.0.249.0 Safari/532.5")
                    .referrer("http://www.google.com")
                    .get();
            Element strImgHtml = pageMeteo.select("#scroller > div:nth-child(1) > div:nth-child(1) > img:nth-child(1)").first();
            Elements strToGetImg = strImgHtml.getElementsByTag("img");
            String src = strToGetImg.attr("scr");
            if(src.isEmpty()){
                sendMsg(message, "This str is empty!");
                System.out.println("This str is empty!");
            }else {
                sendMsg(message, src);
                System.out.println(src);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

Elements strImgHtml = pageMeteo.select("#scroller > div:nth-child(1) > div:nth-child(1) > img:nth-child(1)");
            for (Element el : strImgHtml) {
                String src = el.attr("src");

Elements strImgHtml = pageMeteo.select("#scroller > div:nth-child(1) > div:nth-child(1) > img:nth-child(1)");
            Element srcToGetImg = strImgHtml.select("img.[src$=.png]").first();
            String src = srcToGetImg.text();

Elements source = pageMeteo.select("#scroller > div:nth-child(1) > div:nth-child(1) > img:nth-child(1)");
            if(source.hasText()){
                System.out.println("text present");
            }else {
                System.out.println("no text");
            }
            
            Pattern p=null;
            Matcher m= null;
            String word0= null;
            String word1= null;

            p = Pattern.compile("<img[^>]*src=[\"']([^\"^']*)",
                    Pattern.CASE_INSENSITIVE);
            m = p.matcher(source.toString());
            while (m.find())
            {
                word0=m.group();
                System.out.println(word0.toString());
            }

            if (source.isEmpty()) {
                sendMsg(message, "This str is empty!");
                System.out.println("This str is empty!");
            } else {
                sendMsg(message, source.toString());
                System.out.println(source);
            }

如果为空，为什么选择“源”？如何只提取src像一个字符串我想要得到这个img的源-

https://radar.veg.by/kiev/

Answer 1

我不确定这是否是您正在寻找的，但这是我从站点读取文档（在我的例子中是一个html页面）的方式：

        // I will be reading the lines of the document into this variable
        String[] updates = new String[50]; // I just gave it an arbitrary length for this example

        // Make a URL to the web page
        URL url = new URL("https://your.site.com/document.html");

        // Get the input stream through URL Connection
        URLConnection connection = url.openConnection();
        InputStream is = connection.getInputStream();

        // Once you have the Input Stream, it's just plain old Java IO stuff.

        // In this case I will read the plain text from the html
        // using a reader

        // For binary content, it's better to directly read the bytes from stream and write
        // to the target file.

        BufferedReader br = new BufferedReader(new InputStreamReader(is));

        String line = null;

        // read each line and write to System.out
        int i = 1;
        while ((line = br.readLine()) != null) {
            updates[i] = line.trim();
            i++;
        }

希望有帮助，这里肯定有改进的空间。

附注。我从这个网站的某个地方得到这个答案，但我不知道我从哪里得到它了，所以很抱歉原来的评论者。