第一步:找别人提供的接口,比如在这里我选择的是聚合数据提供的接口
第二步:要申请相应的AppKey方可使用,此参数会作为接口的参数调用。
第三步:调用别人提供的接口方法
代码如下:
package juheapi.nba; /** * Created by Administrator on 2017/11/19/019. */ import net.sf.json.JSONObject; import java.io.*; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.util.HashMap; import java.util.Map; /** *NBA赛事调用示例代码 - 聚合数据 *在线接口文档:https://www.juhe.cn/docs/92 **/ public class NBADemo { public static final String DEF_CHATSET = "UTF-8"; public static final int DEF_CONN_TIMEOUT = 30000; public static final int DEF_READ_TIMEOUT = 30000; public static String userAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36"; //配置您申请的KEY public static final String APPKEY ="b5ca2acdab01c88c99d532cdfb5c3aa2"; //1.NBA常规赛赛程赛果 public static void getRequest1(){ String result =null; String url ="https://op.juhe.cn/onebox/basketball/nba"; //请求接口地址 Map params = new HashMap(); //请求参数 params.put("key",APPKEY); //应用APPKEY(应用详细页查询) params.put("dtype",""); //返回数据的格式,xml或json,默认json try { result =net(url, params, "GET"); JSONObject object = JSONObject.fromObject(result); if(object.getint("error_code")==0){ System.out.println(object.get("result")); } else{ System.out.println(object.get("error_code")+":"+object.get("reason")); } } catch (Exception e) { e.printStackTrace(); } } //2.球队赛程赛事查询 public static void getRequest2(){ String result =null; String url ="https://op.juhe.cn/onebox/basketball/team"; //请求接口地址 Map params = new HashMap(); //请求参数 params.put("key",APPKEY); //应用APPKEY(应用详细页查询) params.put("dtype",""); //返回数据的格式,xml或json,默认json params.put("team",""); //球队名称 try { result =net(url, params, "GET"); JSONObject object = JSONObject.fromObject(result); if(object.getint("error_code")==0){ System.out.println(object.get("result")); } else{ System.out.println(object.get("error_code")+":"+object.get("reason")); } } catch (Exception e) { e.printStackTrace(); } } //3.球队对战赛赛程查询 public static void getRequest3(){ String result =null; String url ="https://op.juhe.cn/onebox/basketball/combat"; //请求接口地址 Map params = new HashMap(); //请求参数 params.put("key",APPKEY); //应用APPKEY(应用详细页查询) params.put("dtype",""); //返回数据的格式,xml或json,默认json params.put("hteam","勇士"); //主队球队名称 params.put("vteam","76人"); //客队球队名称 try { result =net(url, params, "GET"); JSONObject object = JSONObject.fromObject(result); if(object.getint("error_code")==0){ System.out.println(object.get("result")); } else{ System.out.println(object.get("error_code")+":"+object.get("reason")); } } catch (Exception e) { e.printStackTrace(); } } /** * * @param strUrl 请求地址 * @param params 请求参数 * @param method 请求方法 * @return 网络请求字符串 * @throws Exception */ public static String net(String strUrl, Map params,String method) throws Exception { HttpURLConnection conn = null; BufferedReader reader = null; String rs = null; try { StringBuffer sb = new StringBuffer(); if(method==null || method.equals("GET")){ strUrl = strUrl+"?"+urlencode(params); } URL url = new URL(strUrl); conn = (HttpURLConnection) url.openConnection(); if(method==null || method.equals("GET")){ conn.setRequestMethod("GET"); } else{ conn.setRequestMethod("POST"); conn.setDoOutput(true); } conn.setRequestProperty("User-agent", userAgent); conn.setUseCaches(false); conn.setConnectTimeout(DEF_CONN_TIMEOUT); conn.setReadTimeout(DEF_READ_TIMEOUT); conn.setInstanceFollowRedirects(false); conn.connect(); if (params!= null && method.equals("POST")) { try { DataOutputStream out = new DataOutputStream(conn.getOutputStream()); out.writeBytes(urlencode(params)); } catch (Exception e) { // TODO: handle exception } } InputStream is = conn.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET)); String strRead = null; while ((strRead = reader.readLine()) != null) { sb.append(strRead); } rs = sb.toString(); } catch (IOException e) { e.printStackTrace(); } finally { if (reader != null) { reader.close(); } if (conn != null) { conn.disconnect(); } } return rs; } //将map型转为请求参数型 public static String urlencode(Mapdata) { StringBuilder sb = new StringBuilder(); for (Map.Entry i : data.entrySet()) { try { sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue()+"","UTF-8")).append("&"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } return sb.toString(); } }
package juheapi.nba; /** * Created by Administrator on 2017/11/19/019. */ public class NBADemoTest extends NBADemo{ public static void main(String[] args) { getRequest3(); } }
在使用上述代码时可能会出现异常,一般都是由于jar包不全导致的。
问题一: 抛出 NestableRuntimeException
解决办法:查看jar包是否完整
包括:commons-beanutils-1.7.0.jar
commons-collections-3.1.jar
commons-lang-2.4.jar (使用过高版本也会报NestableRuntimeException)
commons-logging-1.1.1.jar
ezmorph-1.0.6.jar
json-lib-2.1.jar
log4j.jar
问题二:User-specified log class'org.apache.commons.logging.impl.Log4JLogger' cannot be found or is notuseable.
解决办法:添加log4j的jar包。
总结
以上就是本文关于Java编程实现NBA赛事接口调用实例代码的全部内容,希望对大家有所帮助。感兴趣的朋友可以继续参阅本站:
java实现一个简单的网络爬虫代码示例
分享一个简单的java爬虫框架
如有不足之处,欢迎留言指出。