关于使用聚合数据汇率接口植入自己的程序问题

关于使用聚合数据汇率接口植入自己的程序问题

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.常用汇率查询
     */
    public static void getRequestExchange(){
        String result =null;
        String url ="http://op.juhe.cn/onebox/exchange/query";//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)

        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.货币列表
     * @return
     */
    public static List<CurrencyBean> getRequestCurrencyList(){
        List<CurrencyBean> list = null;//货币列表集合
        String result =null;
        String url ="http://op.juhe.cn/onebox/exchange/list";//请求接口地址
        String currencyList = null;//货币列表
        Map params = new HashMap();//请求参数
            params.put("key",APPKEY);//应用APPKEY(应用详细页查询)

        try {
            result =net(url, params, "GET");
            JSONObject object = JSONObject.fromObject(result);
            if(object.getInt("error_code")==0){
                //得到json格式的列表
                currencyList = object.get("result").toString();
                //截取字符串，得到集合json
                String currency = currencyList.substring(8, currencyList.length()-1);
                //字符串转换为json数组
                JSONArray jsonArray = JSONArray.fromObject(currency);
                //json 转换为 Java集合
                list = (List<CurrencyBean>) jsonArray.toList(jsonArray, CurrencyBean.class);
            }else{
                list = null;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return list;
    }

    /**
     * 3.实时汇率查询换算
     * @param currency
     * @return
     */
    public static String getRequestConversion(String currency){
        String result =null;
        String url ="http://op.juhe.cn/onebox/exchange/currency";//请求接口地址
        String multiple = null;//转换后得到的倍数
        Map params = new HashMap();//请求参数
            params.put("from","USD");//转换汇率前的货币代码
            params.put("to",currency);//转换汇率成的货币代码
            params.put("key",APPKEY);//应用APPKEY(应用详细页查询)

        try {
            result =net(url, params, "GET");
            JSONObject object = JSONObject.fromObject(result);//得到当前返回的结果
            String str = object.get("result").toString();//根据键“result”得到值
            JSONArray objArray = JSONArray.fromObject(str);//转换成JSON数组对象
            multiple = (String) objArray.getJSONObject(0).get("result");//得到精确值
            if(object.getInt("error_code")!=0){
                multiple = null;
            }
        } catch (Exception e) {
            e.printStackTrace(); 
        }
        return multiple;
    }

    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
     * @param data
     * @return
     */
    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();
    }

注册聚合数据用户，免费使用一天只可调用100次，针对不是很平凡更新汇率的网站，我们可以将其导入自己的数据库，每天定时更新同步数据两次即可！影响不大！