java中HttpsPost和CloseableHttpClient如何使用

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//请求jsonpublic static String HttpsPost(String url, Map param) throws Exception{    String respContent ="";    String restServiceURL = url;    System.out.println(restServiceURL);    CloseableHttpClient client = HttpClients.createDefault();    //设置传入参数    StringEntity entity = new StringEntity(JSONObject.toJSONString(param), "utf-8");    HttpPost httpGet = new HttpPost(restServiceURL);    httpGet.addHeader("Content-Type","application/json;charset=UTF-8");    httpGet.setEntity(entity);    HttpResponse resp = client.execute(httpGet);    int statusCode = resp.getStatusLine().getStatusCode();    if ( 200==statusCode ) {        HttpEntity he = resp.getEntity();        respContent = EntityUtils.toString(he, "utf-8");    }else {        log.error("请求第三方异常，状态码{}，地址{}",statusCode,url);    }    return respContent;}

/** * http请求 application/x-www-form-urlencoded */public static String HttpsPostXw(String url, Map param) throws Exception{    String respContent ="";    String restServiceURL = url;    CloseableHttpClient client = HttpClients.createDefault();    //设置传入参数    HttpPost httpGet = new HttpPost(restServiceURL);    httpGet.setHeader("Content-type", "application/x-www-form-urlencoded");    List nvps = new ArrayList();    if(param!=null){        for (Map.Entry entry : param.entrySet()) {            nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));        }    }    //设置参数到请求对象中    httpGet.setEntity(new UrlEncodedFormEntity(nvps, "utf-8"));    //装填参数    if(param!=null){        for (Map.Entry entry : param.entrySet()) {            httpGet.setHeader(entry.getKey(),entry.getValue());        }    }    HttpResponse resp = client.execute(httpGet);    int statusCode = resp.getStatusLine().getStatusCode();    if ( 200==statusCode ) {        HttpEntity he = resp.getEntity();        respContent = EntityUtils.toString(he, "utf-8");    }else {        log.error("请求第三方异常，状态码{}，地址{}",statusCode,url);    }    return respContent;}

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