我希望使用String和Integer类型的arraylist创建一个Linechart。我创建了一个类来检索股票信息，例如； API的开盘价，收盘价等。我正在尝试创建一个折线图，该折线图使用我的方法之一的时间戳和开盘价作为其轴。我最初的想法是创建两个包含x坐标和y坐标的数组列表。但是，我在创建图形时遇到了麻烦。我不知道如何将带有y坐标的arraylist移到我的图形类中，并使用y.get（i）方法获取某些索引处的值。我知道我将需要解析变量类型，但是，我仍然很困惑。请在下面找到我的代码，以从API，股票对象和图形的创建中获取信息。感谢所有帮助。
干杯。
public class PortfolioScreen {
private static String AA_URL = "https://www.alphavantage.co/query?function=@SRS@&symbol@SYM@";
private static String AA_API_KEY = "key from website";
private static String urlKey = "https://www.alphavantage.co/query?function=@SRS@&symbol@SYM@" + "key from website";
private static String SYMBOL = "@SYM@";
private static String ONE_MINUTE = "&interval=1min";
private static int BUF_SLAB = 512;
private HttpsURLConnection https;
private InputStream outFromWebServer;
private StringBuilder buffer;
private String urlTemplate;
private String series;
private boolean history;
private static String TIME_SERIES_WEEKLY = "Weekly Adjusted Time Series";
private static String TIME_SERIES_INTRADAY = "Time Series (1min)";
private static String STOCK_QUOTES = "Stock Quotes";
private static String TSW_OPEN = "1. open";
private static String TSW_HIGH = "2. high";
private static String TSW_LOW = "3. low";
private static String TSW_CLOSE = "4. close";
private static String TSW_ADJUSTED = "5. adjusted close";
private static String TSW_VOLUME = "6. volume";
private static String TSW_DIVIDEND = "7. dividend amount";
protected SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
private static String ERROR_MSG = "\"Error Message\":";
private static String STOCK_NAME = "1. symbol";
private static String STOCK_PRICE = "2. price";
private static String STOCK_VOLUME = "3. volume";
private static String STOCK_TIMESTAMP = "4. timestamp";
private int pointer;
private String closingprice;
@FXML
DatePicker datepicker;
DbConn dbConn = new DbConn();
//PortfolioScreen a = new PortfolioScreen();
Connection conn = dbConn.createConnection();
ResultSet rs;
@FXML
TextField symbol;
@FXML
TextField priceText;
@FXML
TextField volume;
@FXML
Button button;
@FXML
TextField searchItem;
@FXML
TableView tableView;
@FXML
TableColumn<Stock, String> priceColumn;
@FXML
TableColumn<Stock, String> volumeColumn;
@FXML
TableColumn<Stock, String> timeStampColumn;
@FXML
TextArea textArea;
@FXML
//TextArea calender;
ArrayList<Integer> x = new ArrayList<>();
ArrayList<String> y = new ArrayList<>();
public Vector<Stock> getMultipleStockQuotes(String symbols) throws Exception {
//symbols = symbol.getText().toString().trim();
System.out.println("Getting Current Prices for multiple stocks");
this.setTemplate(1);
if (this.callAlphaAdvantage(false, symbols) != 0) {
throw new Exception("Multiple quoting fails");
} else {
return this.findStockQuotes();
}
}
public void Action(ActionEvent event) throws Exception {
getMultipleStockQuotes(symbol.getText());
}
public void Action2() throws Exception {
boolean t = true;
Date date = new Date();
Calendar cal = Calendar.getInstance();
getMultipleStockQuotes("GE");
getStockQuote("GE",t,DateProducer.getAnyDate(2018));
findHistoricQuote("GE",DateProducer.getAnyDate(2018));
}
public Stock getStockQuote(String symbol, boolean history, Calendar when) {
//int rc = false;
Stock quote = null;
this.history = history;
setTemplate(2);
System.out.println("Starting AlphaAdvantage for '" + symbol + "'");
int rc;
if ((rc = this.callAlphaAdvantage(true, symbol)) != 0) {
quote = new Stock(symbol, when);
quote.setCondition(-1);
if (rc == Stock.AA_NO_SERVICE) {
quote.setCondition(Stock.AA_NO_SERVICE);
}
} else {
quote = this.findHistoricQuote(symbol, when);
}
System.out.println("Ending AlphaAdvantage for '" + symbol + "'");
return quote;
}
private void setTemplate(int immediate) {
if (immediate == 1) {
this.series = STOCK_QUOTES;
this.urlTemplate = urlKey.replaceAll("@SRS@", String.valueOf(ChoiceOfTicker.BATCH_STOCK_QUOTES));
} else if (immediate == 2) {
this.urlTemplate = urlKey.replaceAll("@SRS@", String.valueOf(ChoiceOfTicker.TIME_SERIES_WEEKLY_ADJUSTED));
this.series = TIME_SERIES_WEEKLY;
} else {
this.urlTemplate = urlKey.replaceAll("@SRS@", String.valueOf(ChoiceOfTicker.TIME_SERIES_INTRADAY));
this.series = TIME_SERIES_INTRADAY;
}
}
private int callAlphaAdvantage(boolean single, String symbol) {
int rc = 0;
String ss = "=" + symbol;
if (!single) {
ss = "s" + ss;
}
String tickerURL = this.urlTemplate.replace(SYMBOL, ss);
try {
URL AVurl = new URL(tickerURL);
HttpURLConnection connection = (HttpURLConnection) AVurl.openConnection();
connection.setRequestMethod("GET");
connection.setRequestProperty("Content-Type", "text/html; charset=utf-8");
this.outFromWebServer = new DataInputStream(connection.getInputStream());
if (!this.loadBuffer()) {
rc = -1;
}
this.outFromWebServer.close();
} catch (IOException var7) {
System.out.println("1. HTTPS FAIL=" + var7.getMessage());
rc = -1;
}
return rc;
}
public Stock findHistoricQuote(String symbol, Calendar when) {
Stock quote = null;
String open = null;
String high = null;
String low = null;
String adjusted = null;
String volume = null;
String timestamp = null;
String price = null;
String dividend = null;
BigDecimal bigDividend = BigDecimal.ZERO;
this.pointer = this.buffer.indexOf(this.series);
if (this.pointer != -1) {
this.pointer = this.pointer + this.series.length() + 3;
String quoteDate;
do {
int i =0;
while(true || i < 10000) {
++this.pointer;
int endPtr = this.buffer.indexOf("}", this.pointer);
if (endPtr == -1) {
return quote;
}
int len = endPtr - this.pointer - 1;
char[] dst = new char[len];
this.buffer.getChars(this.pointer, this.pointer + len, dst, 0);
String text = new String(dst);
int d0 = text.indexOf("\"") + 1;
if (d0 > 0) {
int d1 = text.indexOf("\"", d0);
quoteDate = text.substring(d0, d1).replaceAll(" ", "");
if (quoteDate.length() > 10) {
quoteDate = quoteDate.substring(0, 10);
}
open = this.getNextElement(TSW_OPEN);
high = this.getNextElement(TSW_HIGH);
low = this.getNextElement(TSW_LOW);
price = this.getNextElement(TSW_CLOSE);
if (this.history) {
adjusted = this.getNextElement(TSW_ADJUSTED);
}
volume = this.getNextElement(TSW_VOLUME);
if (this.history) {
dividend = this.getNextElement(TSW_DIVIDEND);
if (dividend != null && !dividend.startsWith("\"")) {
bigDividend = bigDividend.add(new BigDecimal(dividend));
}
}
this.pointer = this.buffer.indexOf("}", this.pointer);
System.out.println(symbol + " HIST=" + this.history + " DATE=" + quoteDate + " OPENNING PRICE=" + open +
"CLOSING PRICE=" + price + " " + "HIGH PRICE=" + high + " " + "LOW PRICE=" + low + " " +
"VOLUME=" + " " + volume + " DIV=" + dividend);
i++;
}
this.pointer = endPtr;
}
} while(this.history && (quoteDate == null || DateProducer.getAnyDate(quoteDate).after(when)));
quote = new Stock(symbol, symbol, checkBigDecimal(price), DateProducer.getAnyDate(quoteDate));
quote.setDividend(bigDividend);
}
return quote;
}
private static BigDecimal checkBigDecimal(String value) {
if (value.contains("null") && value != null && !value.isEmpty()) {
if (value.contains(",")) {
value = value.replaceAll(",", "");
}
return new BigDecimal(value);
}
return new BigDecimal(value);
}
private boolean loadBuffer() {
boolean rc = true;
try {
this.buffer = new StringBuilder(BUF_SLAB);
int k;
do {
byte[] bytes = new byte[BUF_SLAB];
k = this.outFromWebServer.read(bytes);
this.buffer.append(new String(bytes, "UTF-8"));
} while (k != -1);
if (this.buffer.indexOf(ERROR_MSG) != -1) {
rc = false;
}
} catch (IOException var4) {
System.out.println("3. BUFFER FAIL=" + var4.getMessage());
}
return rc;
}
private String getNextElement(String name) {
int initialIndex = 0;
int jsonFormat = 4;
if ((this.pointer = this.buffer.indexOf(name, this.pointer)) == -1) {
return null;
} else {
this.pointer += name.length() + jsonFormat;
int length = this.buffer.indexOf("\"", this.pointer) - this.pointer;
char[] dst = new char[length];
this.buffer.getChars(this.pointer, this.buffer.indexOf("\"", this.pointer), dst, initialIndex);
return new String(dst);
}
}
private Vector<Stock> findStockQuotes() {
Vector<Stock> quotes = new Vector();
String symbol = null;
String price = null;
String volume = null;
String timestamp = null;
this.pointer = this.buffer.indexOf(STOCK_QUOTES);
this.pointer = this.pointer + STOCK_QUOTES.length() + 4;
while ((symbol = this.getNextElement(STOCK_NAME)) != null) {
price = this.getNextElement(STOCK_PRICE);
volume = this.getNextElement(STOCK_VOLUME);
timestamp = this.getNextElement(STOCK_TIMESTAMP);
Calendar ts = DateProducer.getAnyTimestamp(timestamp);
Stock quote = new Stock(symbol, symbol, checkBigDecimal(price), ts);
// quote.setVolume(Double.valueOf(volume));
quotes.add(quote);
System.out.println("Symbol=" + symbol + " PRICE=" + price + " VOL=" + volume + " TS=" + DateProducer.getAnyTimestamp(ts));
}
return quotes;
}
public ArrayList findStockQuotesAL() {
Vector<Stock> quotes = new Vector();
String symbol = null;
String price = null;
String volume = null;
String timestamp = null;
this.pointer = this.buffer.indexOf(STOCK_QUOTES);
this.pointer = this.pointer + STOCK_QUOTES.length() + 4;
int i =0;
int counter = 0;
while ((symbol = this.getNextElement(STOCK_NAME)) != null) {
price = this.getNextElement(STOCK_PRICE);
volume = this.getNextElement(STOCK_VOLUME);
timestamp = this.getNextElement(STOCK_TIMESTAMP);
Calendar ts = DateProducer.getAnyTimestamp(timestamp);
Stock quote = new Stock(symbol, symbol, checkBigDecimal(price), ts);
// quote.setVolume(Double.valueOf(volume));
quotes.add(quote);
System.out.println("Symbol=" + symbol + " PRICE=" + price + " VOL=" + volume + " TS=" + DateProducer.getAnyTimestamp(ts));
// adding opening price to an arraylist which I plan to use as the y coordinate.
y.add(price);
i++;
}
return y;
}
public void searchStock(ActionEvent event) {
try {
String sql = "SELECT * FROM stockname WHERE stockname =? ";
PreparedStatement pStatement = conn.prepareStatement(sql);
pStatement.setString((1), searchItem.getText());
rs = pStatement.executeQuery();
if (rs.next()) {
getMultipleStockQuotes(searchItem.getText());
} else {
System.out.println("failed");
}
} catch (SQLException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
PortfolioScreen a = new PortfolioScreen();
boolean t = true;
a.getMultipleStockQuotes("MSFT");
a.getStockQuote("MSFT", t, DateProducer.getAnyDate(20170111));
a.findHistoricQuote("MSFT", DateProducer.getAnyDate(20170111));
System.out.println(a.findStockQuotesAL());
a.findStockQuotesAL();
}
}
public class Stock implements Cloneable {
private SimpleDateFormat DATE_ONLY;
public static int AA_NO_SERVICE = 503;
private String ticker;
private String title;
private String exchange;
private Boolean closed;
private BigDecimal price;
private BigDecimal change;
private BigDecimal peg;
private BigDecimal dividend;
private double volume;
private Calendar tradeDate;
private Calendar dividendDate;
private boolean unknownTicker;
private int condition;
public Stock(String ticker, Calendar tradeDate) {
this(ticker, ticker, (String)null, BigDecimal.ZERO, BigDecimal.ZERO, BigDecimal.ZERO, BigDecimal.ZERO, tradeDate, (Calendar)null, true);
}
public Stock(String ticker, String title, BigDecimal price, Calendar tradeDate) {
this(ticker, title, (String)null, price, BigDecimal.ZERO, BigDecimal.ZERO, BigDecimal.ZERO, tradeDate, (Calendar)null, false);
}
public Stock(String ticker, String title, String exchange, BigDecimal price, BigDecimal change, BigDecimal peg, BigDecimal dividend, Calendar tradeDate, Calendar dividendDate, boolean unknownTicker) {
this.DATE_ONLY = new SimpleDateFormat("yyyy-MM-dd");
this.ticker = ticker;
this.title = title;
this.exchange = exchange;
this.price = price;
this.change = change;
this.peg = peg;
this.dividend = dividend;
this.tradeDate = tradeDate;
this.dividendDate = dividendDate;
this.unknownTicker = unknownTicker;
}
public Stock clone() throws CloneNotSupportedException {
return (Stock)super.clone();
}
public boolean isUnknownTicker() {
return this.unknownTicker;
}
public void setUnknownTicker(boolean b) {
this.unknownTicker = b;
}
public boolean isClosed() {
return this.closed;
}
public void setIsClosed() {
this.closed = true;
}
public String getTicker() {
return this.ticker;
}
public BigDecimal getPrice() {
return this.price;
}
public void setPrice(BigDecimal price) {
this.price = price;
}
public double getVolume() {
return this.volume;
}
public void setVolume(double volume) {
this.volume = volume;
}
public BigDecimal getChange() {
return this.change == null ? BigDecimal.ZERO : this.change;
}
public void setChange(BigDecimal change) {
this.change = change;
}
public BigDecimal getPeg() {
return this.peg;
}
public void setPeg(BigDecimal peg) {
this.peg = peg;
}
public BigDecimal getDividend() {
return this.dividend == null ? BigDecimal.ZERO : this.dividend;
}
public void setDividend(BigDecimal dividend) {
this.dividend = dividend;
}
public Calendar getTradeDate() {
return this.tradeDate;
}
public String getTradeDateStr() {
return this.tradeDate == null ? "-" : this.DATE_ONLY.format(this.tradeDate.getTime());
}
public void setTradeDate(Calendar tradeDate) {
this.tradeDate = tradeDate;
}
public int getCondition() {
return this.condition;
}
public void setCondition(int c) {
this.condition = c;
}
public Calendar getDividendDate() {
return this.dividendDate;
}
public String getDividendDateStr() {
return this.dividendDate == null ? "-" : this.DATE_ONLY.format(this.dividendDate.getTime());
}
public void setDividendDate(Calendar dividendDate) {
this.dividendDate = dividendDate;
}
public String getTitle() {
return this.title;
}
public String getExchange() {
return this.exchange;
}
}
public class Graph extends Application {
PortfolioScreen a = new PortfolioScreen();
ArrayList<String> x = new ArrayList<>();
ArrayList<Double> y;
@Override
public void start(Stage stage) throws Exception {
final CategoryAxis xAxis = new CategoryAxis();
final NumberAxis yAxis = new NumberAxis();
xAxis.setLabel("Number of Month");
final LineChart<String, Number> lineChart = new LineChart<String, Number>(
xAxis, yAxis);
lineChart.setTitle("Line Chart");
XYChart.Series<String, Number> series = new XYChart.Series<String, Number>();
series.setName("My Data");
// populating the series with data
for(int i = 0; i < 1; i++) {
x.add("1");
y.add(1.0);
series.getData().add(new XYChart.Data<String, Number>(x.get(0), y.get(0)));
}
Scene scene = new Scene(lineChart, 800, 600);
lineChart.getData().add(series);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}