apache httpclient新版本的get/post请求

直接撸代码

public final class HttpUtils {

    private static final Logger logger = LoggerFactory.getLogger(HttpUtils.class);

    private HttpUtils(){}

    /**
     * get请求
     * @param url
     * @param headers
     * @return
     */
    public static String get(String url, Map<String,String> headers) {
        HttpGet httpGet = new HttpGet(url);
        headers.entrySet().forEach(entry -> httpGet.addHeader(entry.getKey(), entry.getValue()));
        return executeRequest(httpGet);
    }

    /**
     * get请求
     * @param url
     * @param headers
     * @param params 参数
     * @return
     */
    public static String get(String url, Map<String,String> headers, Map<String,Object> params) {
        StringBuffer sb = new StringBuffer();
        params.entrySet().forEach(entry -> sb.append("&").append(entry.getKey()).append("=").append(entry.getValue()));
        if (url.indexOf("?") == -1) {
            url = url + "?" + sb.toString().replaceFirst("&", "");
        } else {
            url = url + sb.toString();
        }
        HttpGet httpGet = new HttpGet(url);
        headers.entrySet().forEach(entry -> httpGet.addHeader(entry.getKey(), entry.getValue()));
        return executeRequest(httpGet);
    }

    /**
     * post请求
     * @param url
     * @param headers
     * @param params 参数
     * @return
     */
    public static String post(String url, Map<String,String> headers, Map<String,String> params) throws UnsupportedEncodingException {
        HttpPost httpPost = new HttpPost(url);
        headers.entrySet().forEach(entry -> httpPost.addHeader(entry.getKey(), entry.getValue()));
        // 创建参数队列
        List<NameValuePair> nameValuePairs = new ArrayList<>();
        params.entrySet().forEach(entry -> nameValuePairs.add(new BasicNameValuePair(entry.getKey(), entry.getValue())));
        HttpEntity  httpEntity = new UrlEncodedFormEntity(nameValuePairs, "UTF-8");
        httpPost.setEntity(httpEntity);
        return executeRequest(httpPost);
    }

    /**
     * 执行请求
     * @param request
     * @return
     */
    public static String executeRequest(final HttpUriRequest request) {
        String result = "";
        CloseableHttpClient httpClient = HttpClients.createDefault();
        try {
            result = httpClient.execute(request, response -> {
                int statusCode = response.getStatusLine().getStatusCode();
                if (statusCode >= 200 && statusCode < 300) {
                    HttpEntity entity = response.getEntity();
                    return entity != null ? EntityUtils.toString(entity) : null;
                } else {
                    throw new ClientProtocolException("Unexpected response status: " + statusCode);
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
            logger.error("url: {}, request failed!", request.getURI().getHost() + request.getURI().getPath());
            logger.error("",e);
        } finally {
            closeHttpClient(httpClient);
        }
        return result;
    }

    public static void closeHttpClient(CloseableHttpClient httpClient) {
        try {
            httpClient.close();
        } catch (IOException e) {
            logger.error("",e);
        }
    }
}