[Java]代码
import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.util.HashMap; import java.util.Map; import net.sf.json.JSONObject; /** *全国车辆违章调用示例代码 － 聚合数据 *在线接口文档：http://www.juhe.cn/docs/36 **/ public class JuheDemo { 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 ="*************************"; //1.获取支持城市参数接口 public static void getRequest1(){ String result =null; String url ="http://v.juhe.cn/wz/citys";//请求接口地址 Map params = new HashMap();//请求参数 params.put("province","");//默认全部，省份简写，如：ZJ、JS params.put("dtype","");//返回数据格式：json或xml或jsonp,默认json params.put("format","");//格式选择1或2，默认1 params.put("callback","");//返回格式选择jsonp时，必须传递 params.put("key",APPKEY);//你申请的key 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.请求违章查询接口 public static void getRequest2(){ String result =null; String url ="http://v.juhe.cn/wz/query";//请求接口地址 Map params = new HashMap();//请求参数 params.put("dtype","");//返回数据格式：json或xml或jsonp,默认json params.put("callback","");//返回格式选择jsonp时，必须传递 params.put("key",APPKEY);//你申请的key params.put("city","");//城市代码 * params.put("hphm","");//号牌号码 完整7位 ,需要utf8 urlencode* params.put("hpzl","");//号牌类型，默认02 params.put("engineno","");//发动机号 (根据城市接口中的参数填写) params.put("classno","");//车架号 (根据城市接口中的参数填写) 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.接口剩余请求次数查询 public static void getRequest3(){ String result =null; String url ="http://v.juhe.cn/wz/status";//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(); } } public static void main(String[] args) { } /** * * @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(Map<String,Object>data) { 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(); } }
