HttpClient总是无限卡死，紧急?报错

我们网站大部分功能是通过HttpClient获取其他接口提供的内容，但每隔一两天就会出现访问卡死，设置了超时时间，也无限卡死，经断点查看，是卡在closeableHttp.execute(request);开始执行这行代码后就卡死了，不报错，也不执行结束。

以下是完整代码，已查阅过相关doc，实在解决不了了，大家帮忙看下是哪里写的不对？非常感谢

public String getContent(String url, int timeOut) {
		HttpClientBuilder httpBuilder = HttpClientBuilder.create();
		if (timeOut > 0) {
			RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(timeOut).setConnectTimeout(timeOut).setSocketTimeout(timeOut).build();
			httpBuilder.setDefaultRequestConfig(requestConfig);
		}

		CloseableHttpClient closeableHttp = httpBuilder.build();
		HttpGet request = new HttpGet(url);
		CloseableHttpResponse response = null;
		try {
			response = closeableHttp.execute(request);

			HttpEntity entity = response.getEntity();

			return entity == null ? null : EntityUtils.toString(entity, CharacterSet.UTF8);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		} finally {
			try {
				if (request != null) {
					request.abort();
				}

				if (response != null) {
					response.close();
				}

				closeableHttp.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}