HttpClient 如何设置请求接口等待时间

HttpClient 如何设置请求接口等待时间

结合接口日志的打印，我判断是第二种现象，就是接口还没有返回信息，我程序这边就出现了超时的报错。那么如何解决，我们只有增加接口的请求等待时间

问题解决：

	private static Logger logger = LoggerFactory.getLogger(HttpUtil.class);
 
	public static String postGeneralUrl(String url, String contentType, String jsonParam, String encoding, int reSend) {
		
		logger.info("当前请求接口地址:{}",jsonParam.toString());
		// 声明返回结果
		String result = "";
		// 开始请求API接口时间
		long startTime = System.currentTimeMillis();
		// 请求API接口的响应时间
		long endTime = 0L;
		HttpEntity httpEntity = null;
		HttpResponse httpResponse = null;
		HttpClient httpClient = null;
		try {
 
			contentType = contentType == null ? "application/x-www-form-urlencoded" : contentType;
			// 创建连接
			httpClient = HttpClientFactory.getInstance().getHttpClient();
			// 设置请求头和报文
			HttpPost httpPost = HttpClientFactory.getInstance().httpPost(url);
			Header header = new BasicHeader("Accept-Encoding", null);
			RequestConfig requestConfig =  RequestConfig.custom().setSocketTimeout(20000).setConnectTimeout(20000).build();
			httpPost.setConfig(requestConfig);
			httpPost.addHeader(header);
			httpPost.addHeader("Content-Type", contentType);
			List<NameValuePair> list = new LinkedList<>();
			list.add(new BasicNameValuePair("params", jsonParam));// pageHelper放在body中传过去
			// 使用URL实体转换工具
			UrlEncodedFormEntity entityParam = new UrlEncodedFormEntity(list, "UTF-8"); // 使用 UrlEncodedFormEntity 来设置
			// // body,消息体内容
			httpPost.setEntity(entityParam);
			logger.info("请求{}接口的参数为{}", url, jsonParam);
			httpResponse = httpClient.execute(httpPost);
			httpEntity = httpResponse.getEntity();
			result = EntityUtils.toString(httpEntity);
		} catch (SocketTimeoutException es) {
			endTime = System.currentTimeMillis();
			result = "网络连接异常，请检查网络或者开票服务是否正常启动";
			logger.info("请求{}接口的响应报文内容为{},本次请求API接口的响应时间为:{}毫秒", url, result, (endTime - startTime));
			logger.error("请求{}接口出现异常", url, es);
			return result;
		} catch (Exception e) {
			logger.error("请求{}接口出现异常", url, e);
		} finally {
			try {
				EntityUtils.consume(httpEntity);
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		// 请求接口的响应时间
		endTime = System.currentTimeMillis();
 
		logger.info("请求{}接口的响应报文内容为{},本次请求API接口的响应时间为:{}毫秒", url, result, (endTime - startTime));
		return result;
 
	}

其中主要是这部分代码：

			RequestConfig requestConfig =  RequestConfig.custom().setSocketTimeout(20000).setConnectTimeout(20000).build();
			httpPost.setConfig(requestConfig);

当然这个设置和使用的 http.client 版本也有一定的关系

当前我使用的版本是：

		<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore -->
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpcore</artifactId>
			<version>4.4.10</version>
		</dependency>
 
		<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
			<version>4.5.6</version>
			<exclusions>
				<exclusion>
					<groupId>commons-codec</groupId>
					<artifactId>commons-codec</artifactId>
				</exclusion>
				<exclusion>
					<groupId>commons-logging</groupId>
					<artifactId>commons-logging</artifactId>
				</exclusion>
			</exclusions>
		</dependency>