org.apache.http.client

// post 請求
public String licenseInfo(String holderCode, String abstractCode) {
        // 獲取連接客戶端工具
        CloseableHttpClient httpClient = HttpClients.createDefault();

        String entityStr = null;
        CloseableHttpResponse response = null;

        try {
            /*
             * 由于GET請求的參數(shù)都是拼裝在URL地址后方，所以我們要構(gòu)建一個URL，帶參數(shù)
             */
            URIBuilder uriBuilder = new URIBuilder(API_HOST+"/licenseinfo");
            /** 第一種添加參數(shù)的形式 */
//        /*uriBuilder.addParameter("name", "root");
            uriBuilder.addParameter("holderCode", holderCode);
            uriBuilder.addParameter("abstractCode", abstractCode);
            /** 第二種添加參數(shù)的形式 */
            List<NameValuePair> list = new LinkedList<>();
//            BasicNameValuePair param1 = new BasicNameValuePair("holderCode", idNo);
//            BasicNameValuePair param2 = new BasicNameValuePair("password", "123456");
//            list.add(param1);
//            list.add(param2);
//            uriBuilder.setParameters(list);
            // 根據(jù)帶參數(shù)的URI對象構(gòu)建GET請求對象
            HttpGet httpGet = new HttpGet(uriBuilder.build());
            /*
             * 添加請求頭信息
             */
            // 瀏覽器表示
            httpGet.addHeader("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6)");
            // 傳輸?shù)念愋?            httpGet.addHeader("Content-Type", "application/x-www-form-urlencoded");
            // 執(zhí)行請求
            response = httpClient.execute(httpGet);
            // 獲得響應(yīng)的實體對象
            HttpEntity entity = response.getEntity();
            // 使用Apache提供的工具類進(jìn)行轉(zhuǎn)換成字符串
            entityStr = EntityUtils.toString(entity, "UTF-8");
        } catch (ClientProtocolException e) {
            System.err.println("Http協(xié)議出現(xiàn)問題");
            e.printStackTrace();
        } catch (ParseException e) {
            System.err.println("解析錯誤");
            e.printStackTrace();
        } catch (URISyntaxException e) {
            System.err.println("URI解析異常");
            e.printStackTrace();
        } catch (IOException e) {
            System.err.println("IO異常");
            e.printStackTrace();
        } finally {
            // 釋放連接
            if (null != response) {
                try {
                    response.close();
                    httpClient.close();
                } catch (IOException e) {
                    System.err.println("釋放連接出錯");
                    e.printStackTrace();
                }
            }
        }

        // 打印響應(yīng)內(nèi)容
        System.out.println(entityStr);

        return entityStr;
    }