如何使用 Java (Android) 从 Yahoo Finance Cash Flow 报表中提取值？

问题描述

这是此问题解决方案的后续：How to extract data from HTML page source of (a tab within) a webpage?

我正在尝试为 Finance.yahoo.com/quote/AAPL/cash-flow?p=AAPL 上的 Cash Flow Stmt 做同样的事情 - 使用

.getJSONObject("dispatcher") 
.getJSONObject("stores") 
.getJSONObject("QuoteSummaryStore") 
.getJSONObject("cashflowStatementHistory") 
.getJSONArray("cashflowStatements");

尝试提取键 trailingFreeCashFlow 的值 - 但是，它失败并显示错误“No value for trailingFreeCashFlow”。

 public static Map<String,Map<String,String>> getCashFlowTableNames() {
        final Map<String,String> cashFlow = new LinkedHashMap<String,String>() {
            {
                put("trailingFreeCashFlow","trailingFreeCashFlow");
            }
        };

        Map<String,String>> allTableNames = new LinkedHashMap<String,String>>() {
            {
                put("cashFlow",cashFlow);
            }
        };
        return allTableNames;
    }

和

public static String getCashFlowYear(String requestURL) throws IOException {
    String userAgent1 = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/69.0.3497.100 Safari/537.36 OPR/56.0.3051.43";
    try {
        Document doc1 = Jsoup.connect(requestURL).userAgent(userAgent1).get();
        Elements scriptTags = doc1.getElementsByTag("script");
        String re = "root\\.App\\.main\\s*\\=\\s*(.*?);\\s*\\}\\(this\\)\\)\\s*;";

        for (Element script : scriptTags) {
            Pattern pattern = Pattern.compile(re,Pattern.DOTALL);
            Matcher matcher = pattern.matcher(script.html());

            if (matcher.find()) {
                String data = matcher.group(1);
                //Log.e("CashFlowData",data);

                JSONObject jo = new JSONObject(data);
                JSONArray table = getCashFlowTable(jo);
                JSONArray tableQ = getCashFlowTableQ(jo);
                Map<String,String>> tableNames = getCashFlowTableNames();

                String[] dates = getDates(table);
                String[] datesQ = getDates(tableQ); //works
                List<String> tableData = new ArrayList<>();

                for (Map.Entry<String,String>> tableEntry : tableNames.entrySet()) {
                    tableData.add(tableEntry.getKey());
                    tableData.addAll(Arrays.asList(dates));

                    for (Map.Entry<String,String> row1 : tableEntry.getValue().entrySet()) {
                        String[] tableRow1 = getRow(table,row1.getValue());
                        tableData.add(row1.getKey());
                        for (String column : tableRow1) {
                            tableData.add(column);
                        }
                    }
                }
                cashFlowData = TextUtils.join(" ",tableData);
                cashFlowData = cashFlowData.replaceAll("[^a-zA-Z0-9 /-]","");
                cashFlowData = cashFlowData.trim().replaceAll("(?<=[A-Za-z])\\s+(?=[A-Za-z])","");
                Log.e("cashFlowData",cashFlowData);

                List<String> tableDataQ = new ArrayList<>();

                for (Map.Entry<String,String>> tableEntry : tableNames.entrySet()) {
                    tableDataQ.add(tableEntry.getKey());
                    tableDataQ.addAll(Arrays.asList(datesQ));

                    for (Map.Entry<String,String> row1 : tableEntry.getValue().entrySet()) {
                        String[] tableRow1 = getRow(tableQ,row1.getValue());
                        tableDataQ.add(row1.getKey());
                        for (String column : tableRow1) {
                            tableDataQ.add(column);
                        }
                    }
                }
                cashFlowDataQ = TextUtils.join(" ",tableDataQ);
                cashFlowDataQ = cashFlowDataQ.replaceAll("[^a-zA-Z0-9 /-]","");
                cashFlowDataQ = cashFlowDataQ.trim().replaceAll("(?<=[A-Za-z])\\s+(?=[A-Za-z])","");
                //Log.e("balanceDATAQ",balanceDataQ);
            }
        }
    } catch (Exception e) {
        Log.e("err","err",e);
    }
    return cashFlowData;
}

有什么建议吗？

谢谢！

解决方法

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