[网络协议]调用第三方接口使用进行传参和接收响应参数 ，post请求和delete请求方式

开发中 和第三方联调的时候 需要用到调用第三方接口，在此以作笔记，仅供学习参考使用

1. 将需要的传的参数转JSON

    // 1. 转为JSON
        String params = JSONObject.toJSONString(restVerb);
        log.info("请求接口地址==============="+OPEN_URL);
        //2. 调用请求接口doPost（方法名自定义）
        // OPEN_URL url为第三方的接口请求地址
        //params  JSON格式的参数
        //token  token  可有可无
        result = doPost(OPEN_URL, params, token);
        if (isJsonObject(result)){
        //将返回的数据进行转换接收
            JSONObject jsonResult = JSONObject.parseObject(result);
            Object codeObj = jsonResult.get("result");
            if(codeObj != null && !StringUtils.isEmpty(codeObj.toString())){
                code = codeObj.toString();
            }
        }
        log.info("请求之后返回的结果========************======="+result);

dopost 方法 （PSOT请求方式）

 public String doPost(String url, String params, String token) throws Exception {
        log.info("invoke url:"+url+" \nparams:"+params + " \ntoken:"+token);
        CloseableHttpClient httpclient = HttpClients.createDefault();
        // post 请求方式
        HttpPost httpPost = new HttpPost(url);// 创建httpPost
        httpPost.setHeader("Accept", "application/json");
        httpPost.setHeader("Content-Type", "application/json");
        if(!"".equals(token)) {
            httpPost.setHeader("Authorization", token);
        }
        String charSet = "UTF-8";
        //组装 参数信息
        StringEntity entity = new StringEntity(params, charSet);
        httpPost.setEntity(entity);
        CloseableHttpResponse response = null;
        int state = 999;
        String jsonString = "";
        try {
            response = httpclient.execute(httpPost);
            StatusLine status = response.getStatusLine();
            state = status.getStatusCode();
            //判断接收响应参数
            if (state == HttpStatus.SC_OK) {
                HttpEntity responseEntity = response.getEntity();
                jsonString = EntityUtils.toString(responseEntity);
            } else{
                HttpEntity responseEntity = response.getEntity();
                jsonString = EntityUtils.toString(responseEntity);
                log.info("jsonString:"+jsonString + " 请求返回状态:" + state + "("+url+")");
            }
        } catch(Exception e) {
            e.printStackTrace();
            log.info("url:"+url+" params:"+params+" Exception:"+e.getMessage());
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            try {
                httpclient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
		//返回响应参数信息
        return jsonString;
    }

DELETE请求方式（写法和post差不多），如下：

 public String doPostBack(String url, String params, String token) throws Exception {
        log.info("invoke url:"+url+" \nparams:"+params + " \ntoken:"+token);
        CloseableHttpClient httpclient = HttpClients.createDefault();
        // delete 请求方式
        HttpDeleteWithBody httpDel = new HttpDeleteWithBody(url);
        httpDel.setHeader("Content-type", "application/json; charset=utf-8");
        String jsonString = "";
        //  state  此处随意取
        int state = 999;
        try {
            if (null != params) {
                // 构建消息实体 Map转json字符串
                StringEntity entity = new StringEntity(JSON.toJSONString(params), ContentType.APPLICATION_JSON);
                httpDel.setEntity(entity);
            }
            CloseableHttpResponse response = httpclient.execute(httpDel);
            StatusLine status = response.getStatusLine();
            state = status.getStatusCode();
            //
            if (state == HttpStatus.SC_OK) {
                HttpEntity responseEntity = response.getEntity();
                jsonString = EntityUtils.toString(responseEntity);
            } else{
                HttpEntity responseEntity = response.getEntity();
                jsonString = EntityUtils.toString(responseEntity);
                log.info("jsonString:"+jsonString + " 请求返回状态:" + state + "("+url+")");
            }
        } catch (IOException e) {
            log.info("delete请求提交失败:" + url, e);
        } finally {
            httpDel.releaseConnection();
        }
		//接收返回响应参数
        return jsonString;
    }

以上在学习工作中的记录，分享一下，给朋友们提供参考，有不到之处，请多指教