基于JAVA的违章查询助手数据调用代码实例详解编程语言

[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(); 
    } 
}