Question

我正在尝试为最终项目构建一个简单的幻想股票JAVA应用程序。目前的主要问题是弄清楚如何检索库存数据。

我从Yahoo Finance Java教程中获取了这段代码，但似乎已经过时了。有没有人愿意帮助我并为httpclient 4.x更新此内容或将我链接到一个有效的示例？

另外，在命令行中，我只需要在-cp或httpcore中引用httpclient吗？

import java.io.*;
import org.apache.commons.httpclient.*;
import org.apache.commons.httpclient.methods.*;

public class YahooWebServiceGet {   

    public static void main(String[] args) throws Exception {
        String request = "http://api.search.yahoo.com/WebSearchService/V1/webSearch?appid=YahooDemo&query=umbrella&results=10";

        HttpClient client = new HttpClient();
        GetMethod method = new GetMethod(request);

        // Send GET request
        int statusCode = client.executeMethod(method);

        if (statusCode != HttpStatus.SC_OK) {
            System.err.println("Method failed: " + method.getStatusLine());
        }
        InputStream rstream = null;

        // Get the response body
        rstream = method.getResponseBodyAsStream();

        // Process the response from Yahoo! Web Services
        BufferedReader br = new BufferedReader(new InputStreamReader(rstream));
        String line;
        while ((line = br.readLine()) != null) {
            System.out.println(line);
        }
        br.close();
    }

}

Answer 1

尝试这样的事情：

CloseableHttpClient httpclient = HttpClients.createDefault();
String url = "http://api.search.yahoo.com/WebSearchService/V1/webSearch?appid=YahooDemo&query=umbrella&results=10";
HttpGet httpget = new HttpGet(url);
CloseableHttpResponse response = httpclient.execute(httpget);
try {
    HttpEntity entity = response.getEntity();
    InputStream is = entity.getContent();

    //do stuff with is
} finally {
    response.close();
}

我对雅虎财经API不熟悉，但如果回复是JSON并且你使用杰克逊很酷，你可以使用InputStream执行此操作：

ObjectMapper mapper = new ObjectMapper();
Map<String, Object> jsonMap = mapper.readValue(inputStream, Map.class);

Answer 2

雅虎报价服务已经消失。请改为使用Investor's Exchange API。

Answer 3

其实很简单。请执行下列操作 - 将以下 maven 依赖项添加到您的 pom.xml

<dependency>
    <groupId>com.yahoofinance-api</groupId>
    <artifactId>YahooFinanceAPI</artifactId>
    <version>3.15.0</version>
</dependency>

然后在要使用的java类中，键入以下内容以获取股票数据

 YahooFinance.get("GOOG")

使用Yahoo Finance API检索股票行情

3 个答案: