restTemplate http线程池

最新推荐文章于 2025-04-03 14:49:22 发布

stSahana

最新推荐文章于 2025-04-03 14:49:22 发布

阅读量5.3k

点赞数

CC 4.0 BY-SA版权

分类专栏： java框架

本文链接：https://blog.youkuaiyun.com/stSahana/article/details/90487075

java框架专栏收录该内容

10 篇文章

订阅专栏

本文介绍了如何在Spring应用中利用restTemplate进行HTTP请求，并着重讲解了如何配置和使用http-client来实现线程池，以提高并发请求的效率。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

需要额外添加http-client依赖

/**
 * Http连接池
 * @Author: stsahana
 * 摘自https://www.cnblogs.com/zhangzhi19861216/p/8594674.html
 * @Date: 2019-5-21 17:31
 **/
@Configuration
public class RestTemplateConfig {
  @Value("${http-pool.connection-request-timeout}")
  private  int connectionRequestTimeout;
  @Value("${http-pool.connection-timeout}")
  private  int connectionTimeout;
  @Value("${http-pool.socket-timeout}")
  private  int socketTimeout;
  @Value("${http-pool.max-per-route}")
  private  int maxPerRoute;
  @Value("${http-pool.max-total}")
  private  int maxTotal;

  @Bean
  public RestTemplate restTemplate() {
    return new RestTemplate(httpRequestFactory());
  }

  @Bean
  public ClientHttpRequestFactory httpRequestFactory() {
    return new HttpComponentsClientHttpRequestFactory(httpClient());

  }

  @Bean
  public HttpClient httpClient() {
    Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
        .register("http", PlainConnectionSocketFactory.getSocketFactory())
        .register("https", SSLConnectionSocketFactory.getSocketFactory())
        .build();
    PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
//设置整个连接池最大连接数 根据自己的场景决定
    connectionManager.setMaxTotal(maxTotal);
    //路由是对maxTotal的细分
    connectionManager.setDefaultMaxPerRoute(maxPerRoute);
    RequestConfig requestConfig = RequestConfig.custom()
        .setSocketTimeout(socketTimeout)//服务器返回数据(response)的时间，超过该时间抛出read timeout
        .setConnectTimeout(connectionTimeout)//连接上服务器(握手成功)的时间，超出该时间抛出connect timeout
        .setConnectionRequestTimeout(connectionRequestTimeout)//从连接池中获取连接的超时时间，超过该时间未拿到可用连接，会抛出org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool
                .build();
        return HttpClientBuilder.create()
                .setDefaultRequestConfig(requestConfig)
                .setConnectionManager(connectionManager)
                .build();
    }
}