基于JAVA的火车票价信息接口调用代码实例.doc

基于JAVA的火车票价信息接口调用代码实例代码描述：基于JAVA的火车票价信息接口调用代码实例代码平台：聚合数据importjava.io.BufferedReader;importjava.io.DataOutputStream;importjava.io.IOException;importjava.io.InputStream;importjava.io.InputStreamReader;importjava.io.UnsupportedEncodingException;.HttpURLConnection;.URL;.URLEncoder;importjava.util.HashMap;importjava.util.Map;importnet.sf.json.JSONObject;/*火车时刻表调用示例代码聚合数据*在线接口文档：/docs/79*/publicclassJuheDemopublicstaticfinalStringDEF_CHATSET=UTF-8;publicstaticfinalintDEF_CONN_TIMEOUT=30000;publicstaticfinalintDEF_READ_TIMEOUT=30000;publicstaticStringuserAgent=Mozilla/5.0(WindowsNT6.1)AppleWebKit/537.36(KHTML,likeGecko)Chrome/29.0.1547.66Safari/537.36;/配置您申请的KEYpublicstaticfinalStringAPPKEY=*;/1.列次查询publicstaticvoidgetRequest1()Stringresult=null;Stringurl=/onebox/train/query;/请求接口地址Mapparams=newHashMap();/请求参数params.put(train,);/车次号，如:D3010params.put(key,APPKEY);/应用APPKEY(应用详细页查询)tryresult=net(url,params,GET);JSONObjectobject=JSONObject.fromObject(result);if(object.getInt(error_code)=0)System.out.println(object.get(result);elseSystem.out.println(object.get(error_code)+:+object.get(reason);catch(Exceptione)e.printStackTrace();/2.站到站检索publicstaticvoidgetRequest2()Stringresult=null;Stringurl=/onebox/train/query_ab;/请求接口地址Mapparams=newHashMap();/请求参数params.put(from,);/出发站名称，如:北京params.put(to,);/到达站名称，如：上海params.put(key,APPKEY);/应用APPKEY(应用详细页查询)tryresult=net(url,params,GET);JSONObjectobject=JSONObject.fromObject(result);if(object.getInt(error_code)=0)System.out.println(object.get(result);elseSystem.out.println(object.get(error_code)+:+object.get(reason);catch(Exceptione)e.printStackTrace();publicstaticvoidmain(Stringargs)/*paramstrUrl请求地址*paramparams请求参数*parammethod请求方法*return网络请求字符串*throwsException*/publicstaticStringnet(StringstrUrl,Mapparams,Stringmethod)throwsExceptionHttpURLConnectionconn=null;BufferedReaderreader=null;Stringrs=null;tryStringBuffersb=newStringBuffer();if(method=null|method.equals(GET)strUrl=strUrl+?+urlencode(params);URLurl=newURL(strUrl);conn=(HttpURLConnection)url.openConnection();if(method=null|method.equals(GET)conn.setRequestMethod(GET);elseconn.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)tryDataOutputStreamout=newDataOutputStream(conn.getOutputStream();out.writeBytes(urlencode(params);catch(Exceptione)/TODO:handleexceptionInputStreamis=conn.getInputStream();reader=newBufferedReader(newInputStreamReader(is,DEF_CHATSET);StringstrRead=null;while(strRead=reader.readLine()!=null)sb.append(strRead);rs=sb.toString();catch(IOExceptione)e.printStackTrace();finallyif(reader!=null)reader.close();if(conn!=null)conn.disconnect();returnrs;/将map型转为请求参数型publicstaticStringurlencode(Mapdata)StringBuildersb=newStringBuilder();for(Map.Entryi:data.entrySet()trysb.