Jsoup 和 for 循环 nosuchelementexception-解网

问：

我正在尝试通过不断更改 URL 字符串来收集 Yahoo Finance 上的数据。
这是我的代码，更有意义：

    public static void gatherLoop() throws NoSuchElementException, IOException {
        for (var i = 1; i < 99; i++) {
            BufferedReader gatherStocks = new BufferedReader(new FileReader("stockNames.txt"));
            Stream<String> load = Files.lines(Paths.get("stockNames.txt"));
            String loadString = load.skip(i).findFirst().get();
            String glURL = "http://finance.yahoo.com/quote/"+loadString+"?p="+loadString+"&.tsrc=fin-srch";

            if (glURL.equals("http://finance.yahoo.com/quote/?p=&.tsrc=fin-srch")) {
                gatherStocks.close();
                System.out.println("Loaded Stocks");
                System.out.println("If Their Is No Stocks Popping Up, You Have No Saved Stocks");
            }
            else {
                Document doc = Jsoup.connect(glURL).get();
                Elements contentA = doc.getElementsByClass("D(ib) Fz(18px)");
                System.out.println("|------------------------------------------------|");
                for(Element a : contentA) {
                    System.out.println("| " + i + ". Name: " + a.text());
                    gatherStocks.readLine();
                }
            }
        }
    }

但是，当我运行代码时，我在编译器中收到运行时错误：

Exception in thread "main" java.util.NoSuchElementException: No value present
        at java.base/java.util.Optional.get(Optional.java:143)
        at StockAnalysis.saves.gatherLoop(saves.java:32)
        at StockAnalysis.saves.gatherSavedStocks(saves.java:25)
        at StockAnalysis.Home.main(Home.java:27)

我尝试的第一件事就是再次运行，但这会重置为零。然后我试着只读字符串。i++voidiloadstring

Java 运行时错误 nosuchelementexception

import java.io.File;
import java.io.IOException;
import java.util.Scanner;

import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

public class Extractor {
    private static final String TEMPLATE = "http://finance.yahoo.com/quote/%s?p=%s&.tsrc=fin-srch";

    public static void showName(String name) throws IOException {
        String url = String.format(TEMPLATE, name, name);
        Connection conn = Jsoup.connect(url);
        Document doc = conn.get(); // throws java.io.IOException
        Elements contentA = doc.getElementsByClass("D(ib) Fz(18px)");
        for (Element a : contentA) {
            System.out.println(a.text());
        }
    }

    public static void main(String[] args) {
        try (Scanner gatherStocks = new Scanner(new File("stocknames.txt"))) {
            while (gatherStocks.hasNextLine()) {
                String name = gatherStocks.nextLine();
                showName(name);
            }
        }
        catch (IOException xIo) {
            xIo.printStackTrace();
        }
    }
}

当我运行上面的代码时，我得到以下输出：

Rivian Automotive, Inc. (RIVN)
Snap Inc. (SNAP)
Novo Integrated Sciences, Inc. (NVOS)
Ambrx Biopharma Inc. (AMAM)
Troika Media Group, Inc. (TRKA)
BridgeBio Pharma, Inc. (BBIO)
Spirit Airlines, Inc. (SAVE)
Unicycive Therapeutics, Inc. (UNCY)
Apple Inc. (AAPL)
Nutanix, Inc. (NTNX)
SoFi Technologies, Inc. (SOFI)
Grayscale Bitcoin Trust (BTC) (GBTC)

Jsoup 和 for 循环 nosuchelementexception

Jsoup and for loop nosuchelementexception

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