使用Yahoo Finance API检索股票行情

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。

我从雅虎财经Java教程中摘取了这段代码，但它似乎已过时。任何人都会愿意帮助我，并更新httpclient 4.x或将我链接到一个有效的例子吗？

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

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：

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(); 
} 

我不熟悉雅虎财经API，但如果响应是JSON和你很酷使用杰克逊，你可以用InputStream做到这一点：

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。改为尝试Investor's Exchange API。