查询当前已发布的关于股票信息的Web服务接口。 设计一个股票查询的用户界面，允许用户输入待查询的股票代码或股票名称，显示该股票的当前价格，成交量，历史最高价，历史最低价等相关信息。 java实现利用新浪财经api

好的，以下是查询股票信息的Web服务接口：

- 股票实时行情接口：http://hq.sinajs.cn/list=股票代码（例如：http://hq.sinajs.cn/list=sh601006）
- 股票历史行情接口：http://money.finance.sina.com.cn/quotes_service/api/json_v2.php/CN_MarketData.getKLineData?symbol=股票代码&scale=时间间隔&ma=no&datalen=行数（例如：http://money.finance.sina.com.cn/quotes_service/api/json_v2.php/CN_MarketData.getKLineData?symbol=sh601006&scale=240&ma=no&datalen=1000）

请注意，以上接口仅供参考，使用时需遵守相关规定和条款。

接下来是一个简单的Java实现，实现了用户输入股票代码或名称查询相关信息的功能：

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Scanner;
import org.json.JSONObject;

public class StockQuery {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("请输入股票代码或名称：");
        String stock = sc.nextLine();
        sc.close();
        String stockCode = getStockCode(stock);
        if (stockCode == null) {
            System.out.println("未找到该股票，请检查输入是否正确！");
            return;
        }
        String realtimeData = getRealtimeData(stockCode);
        String[] realtimeInfo = parseRealtimeData(realtimeData);
        String historyData = getHistoryData(stockCode);
        JSONObject historyInfo = parseHistoryData(historyData);
        System.out.println("股票代码：" + stockCode);
        System.out.println("当前价格：" + realtimeInfo[3]);
        System.out.println("成交量：" + realtimeInfo[8]);
        System.out.println("历史最高价：" + historyInfo.getJSONArray("high").get(0));
        System.out.println("历史最低价：" + historyInfo.getJSONArray("low").get(0));
    }

    // 根据股票名称或代码获取股票代码
    private static String getStockCode(String stock) {
        String result = null;
        try {
            URL url = new URL("http://suggest3.sinajs.cn/suggest/type=&key=" + stock + "&name=suggestdata_1");
            URLConnection conn = url.openConnection();
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "GBK"));
            String line;
            while ((line = in.readLine()) != null) {
                String[] stockInfo = line.split(",");
                if (stockInfo[0].equals("var suggestdata_1={")) {
                    for (int i = 1; i < stockInfo.length; i++) {
                        String[] stockDetail = stockInfo[i].split("\"");
                        if (stockDetail[1].contains("sh") || stockDetail[1].contains("sz")) {
                            result = stockDetail[1];
                            break;
                        }
                    }
                }
            }
            in.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    // 获取股票实时行情数据
    private static String getRealtimeData(String stockCode) {
        String result = null;
        try {
            URL url = new URL("http://hq.sinajs.cn/list=" + stockCode);
            URLConnection conn = url.openConnection();
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "GBK"));
            result = in.readLine();
            in.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    // 解析股票实时行情数据
    private static String[] parseRealtimeData(String realtimeData) {
        String[] result = null;
        if (realtimeData != null) {
            String[] stockInfo = realtimeData.split(",");
            result = new String[stockInfo.length];
            for (int i = 0; i < stockInfo.length; i++) {
                result[i] = stockInfo[i].replace("\"", "").replace("=", ":");
            }
        }
        return result;
    }

    // 获取股票历史行情数据
    private static String getHistoryData(String stockCode) {
        String result = null;
        try {
            URL url = new URL("http://money.finance.sina.com.cn/quotes_service/api/json_v2.php/CN_MarketData.getKLineData?symbol=" + stockCode + "&scale=240&ma=no&datalen=1000");
            URLConnection conn = url.openConnection();
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "GBK"));
            StringBuilder sb = new StringBuilder();
            String line;
            while ((line = in.readLine()) != null) {
                sb.append(line);
            }
            result = sb.toString();
            in.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    // 解析股票历史行情数据
    private static JSONObject parseHistoryData(String historyData) {
        JSONObject result = null;
        if (historyData != null) {
            result = new JSONObject(historyData);
        }
        return result;
    }
}