http请求封装类 get请求

/**
 * http请求封装类
 */
public class HttpUtils {
    /**
     *
     * @param url 请求的URL
     * @param params 请求的参数
     * @return
     */
    public static  Object sendGetRequest(String host,String path,HttpHeaders headers , Map params){
        RestTemplate client = new RestTemplate();
        HttpMethod method = HttpMethod.GET;
        //将请求头部和参数合成一个请求
        HttpEntity requestEntity = new HttpEntity<>(headers);
        //执行HTTP请求，将返回的结构使用ResultVO类格式化
        ResponseEntity response = null;
        try {
            response  = client.exchange(buildUrl(host,path,params), method, requestEntity,String.class);
        }catch (Exception e){
            e.printStackTrace();
        }

        return response.getBody();

    }

    private static String buildUrl(String host, String path, Map querys) throws UnsupportedEncodingException {
        StringBuilder sbUrl = new StringBuilder();
        sbUrl.append(host);
        if (!StringUtils.isBlank(path)) {
            sbUrl.append(path);
        }
        if (null != querys) {

            StringBuilder sbQuery = new StringBuilder();

            for (Map.Entry query : querys.entrySet()) {

                if (0 < sbQuery.length()) {
                    sbQuery.append("&");
                }
                if (StringUtils.isBlank(query.getKey()) && !StringUtils.isBlank(query.getValue())) {
                    sbQuery.append(query.getValue());
                }
                if (!StringUtils.isBlank(query.getKey())) {
                    sbQuery.append(query.getKey());
                    if (!StringUtils.isBlank(query.getValue())) {
                        sbQuery.append("=");
                        sbQuery.append(URLEncoder.encode(query.getValue(), "utf-8"));
                    }
                }
            }
            if (0 < sbQuery.length()) {
                sbUrl.append("?").append(sbQuery);
            }
        }



        return sbUrl.toString();

    }

 

 

public JSONArray sendCmssBody(SendCmssBody sendCmssBody) {

    if (StringUtils.isEmpty(redisTemplateService.get(sendCmssBody.getNu()))){
        Map queryMap = new HashMap<>();
        queryMap.put("com",sendCmssBody.getCom());
        queryMap.put("nu",sendCmssBody.getNu());
        HttpHeaders handler = new HttpHeaders();
        handler.add("Authorization","APPCODE "+appCode);
        Object o =   HttpUtils.sendGetRequest(url,"/showapi_expInfo",handler,queryMap);
        JSONObject parse = (JSONObject) JSONObject.parse(o.toString());
        JSONObject showapi_res_body = parse.getJSONObject("showapi_res_body");
        JSONArray data = showapi_res_body.getJSONArray("data");
        System.out.println(data.toString());
        //转Unicode
        String unicode = UtilsUnicode.stringToUnicode(data.toString());
        redisTemplateService.set(sendCmssBody.getNu(),unicode);
        redisTemplateService.expire(sendCmssBody.getNu(),10);
        logger.info("保存成功");
        return data;
    }else {
       String info= redisTemplateService.get(sendCmssBody.getNu());
        String unicode = UtilsUnicode.unicodeToString(info);
        logger.info(unicode);
        logger.info("查询成功");
        return   (JSONArray)JSONArray.parse(unicode);

    }


}