HttpClient 接口调用

　　　　　String url = "http://127.0.0.1:8080/api";
        //然后根据表名获取公司信息
        HttpPost httppost = new HttpPost(url);
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("comName", comName));
        HttpResponse httpResponse = null;
        HttpEntity httpEntity = null;
        try {
　　　　　　　//设置超时时间 httpclient4.5之后改为构建requestConfig对象
　　　　　　　RequestConfig requestConfig = RequestConfig.custom()
　　　　　　　　　　　　.setConnectTimeout(5000).setConnectionRequestTimeout(1000)
　　　　　　　　　　　　.setSocketTimeout(5000).build();
　　　　　　　httppost.setConfig(requestConfig);
　　　　　　　HttpClient httpclient = HttpClients.custom().setRetryHandler(new DefaultHttpRequestRetryHandler()).build(); 
　          httppost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
            httpResponse = httpclient.execute(httppost);
            httpEntity = httpResponse.getEntity();
        } catch (UnsupportedEncodingException e1) {
            logger.error(e1.getMessage());
        } catch (ClientProtocolException e1) {
            logger.error(e1.getMessage());
        } catch (IOException e1) {
            logger.error(e1.getMessage());
        }
        if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {// 请求正常
            try {
                String result = EntityUtils.toString(httpEntity);
                JSONObject data = JSONObject.fromObject(httpEntity);
                if("200".equals(data.get("code"))){
                    System.out.println("调用成功");
                }else{
                    logger.error(data.get("message"));
                }
            } catch (Exception e) {
                logger.error(e.getMessage());
            }
        }else {
            try {
　　　　　　　　　　logger.error(EntityUtils.toString(httpEntity));
            } catch (ParseException e) {
                logger.error(e.getMessage());
            } catch (IOException e) {
                logger.error(e.getMessage());
            }
        }