http工具类

/** * 发送HttpGet请求 * * @param url * 请求地址 * @return 返回字符串 */
public static String sendGet(String url) {
    String result = null;
    CloseableHttpResponse response = null;
    try {
        HttpGet httpGet = new HttpGet(url);
        httpGet.setHeader("User-Agent", userAgent);

        // 设置4s超时
        RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(4000)
                .setConnectTimeout(4000).build();// 设置请求和传输超时时间
        httpGet.setConfig(requestConfig);

        response = httpclient.execute(httpGet);
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            result = EntityUtils.toString(entity);
        }
    } catch (Exception e) {
        log.info("处理失败 {}" + e);
    } finally {
        if (response != null) {
            try {
                EntityUtils.consume(response.getEntity());
            } catch (Exception e) {
                log.info(e.getMessage());
            }
        }
    }
    return result;
}

/**
 * * 发送HttpPost请求，参数为map * * @param url * 请求地址 * @param map * 请求参数 * @return
 * 返回字符串
 */
public static String sendPost(String url, Map<String, String> map) {
    // 设置参数
    List<NameValuePair> formparams = new ArrayList<NameValuePair>();
    for (Map.Entry<String, String> entry : map.entrySet()) {
        formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
    }
    // 编码
    UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(formparams, Consts.UTF_8);
    // 取得HttpPost对象
    HttpPost httpPost = new HttpPost(url);
    // 防止被当成攻击添加的
    httpPost.setHeader("User-Agent", userAgent);

    // 设置4s超时
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(4000)
            .setConnectTimeout(4000).build();// 设置请求和传输超时时间
    httpPost.setConfig(requestConfig);

    // 参数放入Entity
    httpPost.setEntity(formEntity);
    CloseableHttpResponse response = null;
    String result = null;
    try {
        // 执行post请求
        response = httpclient.execute(httpPost);
        // 得到entity
        HttpEntity entity = response.getEntity();
        // 得到字符串
        result = EntityUtils.toString(entity);
    } catch (Exception e) {
        log.info(e.getMessage());
    } finally {
        if (response != null) {
            try {
                EntityUtils.consume(response.getEntity());
            } catch (Exception e) {
                log.info(e.getMessage());
            }
        }
    }
    return result;
}