HTTP調用接口方法

Http調用第三方接口代碼：

/**
 * 房融界接口對接
 * @return
 */
public Map<String,Object> frjRequest(){
    String url="房融界提供的接口地址";
    String result = "";
    HttpPost httppost=new HttpPost(url); //建立HttpPost對象
    CloseableHttpClient client = HttpClients.createDefault();//創建HttpClient對象

    try {
        //添加參數
        List<NameValuePair> paramsList=new ArrayList<NameValuePair>();
        paramsList.add(new BasicNameValuePair("鍵","值"));
        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramsList, "UTF-8");

        //設置請求和傳輸時長
        RequestConfig.Builder builder = RequestConfig.custom();
        builder.setSocketTimeout(120000);
        builder.setConnectTimeout(60000);
        RequestConfig config = builder.build();

        httppost.setEntity(entity);
        httppost.setConfig(config);

        //發送Post
        CloseableHttpResponse response = client.execute(httppost);
        HttpEntity httpEntity = response.getEntity();
        if (httpEntity != null) {
            result = EntityUtils.toString(httpEntity, "UTF-8");
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            client.close();
            httppost.releaseConnection();
        } catch (IOException e) {
            logger.info(e.toString(), e);
        }
    }
    return JSON.parseObject(result, Map.class);
}

 方法二：傳遞JSON格式請求

/**
 * 發送json流數據*/
public static String postWithJSON(String url, String jsonParam) throws Exception {
    HttpPost httpPost = new HttpPost(url);
    CloseableHttpClient client = HttpClients.createDefault();
    String respContent = null;
    StringEntity entity = new StringEntity(jsonParam, "utf-8");//解決中文亂碼問題
    entity.setContentEncoding("UTF-8");
    entity.setContentType("application/json");
    httpPost.setEntity(entity);
    HttpResponse resp = client.execute(httpPost);
    if (resp.getStatusLine().getStatusCode() == 200) {
        HttpEntity he = resp.getEntity();
        respContent = EntityUtils.toString(he, "UTF-8");
    }
    return respContent;
}

注意：

//Map --> JSONString
Map<String,Object> param = new HashMap<>();
param.put("name",name);
param.put("phone",phone);
String jsonParam = JSONUtils.toJSONString(param);
//JSONString --> JSONObj
JSONObject resultObj = JSONObject.parseObject(jsonParam);

方法三：傳遞字符串格式數據

public static String postWithString(String url, String stringParam) throws Exception {
    HttpPost httpPost = new HttpPost(url);
    CloseableHttpClient client = HttpClients.createDefault();
    String respContent = null;
    StringEntity entity = new StringEntity(stringParam, "utf-8");//解決中文亂碼問題
    entity.setContentEncoding("UTF-8");
    entity.setContentType("text");
    httpPost.setEntity(entity);
    HttpResponse resp = client.execute(httpPost);
    if (resp.getStatusLine().getStatusCode() == 200) {
        HttpEntity he = resp.getEntity();
        respContent = EntityUtils.toString(he, "UTF-8");
    }
    return respContent;
}