配置
package xyz.kszs.config;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
@Configuration
public class RestTemplateConfig {
@Bean
public RestTemplate restTemplate(ClientHttpRequestFactory factory){
//boot中可使用RestTemplateBuilder.build创建
RestTemplate restTemplate=new RestTemplate();
//配置请求工厂
restTemplate.setRequestFactory(factory);
//默认底层执行 HttpURLConnection
return restTemplate;
}
@Bean
public ClientHttpRequestFactory clientHttpRequestFactory(HttpClient httpClient) {
HttpComponentsClientHttpRequestFactory clientHttpRequestFactory = new HttpComponentsClientHttpRequestFactory();
// httpClient创建器
clientHttpRequestFactory.setHttpClient(httpClient);
// 连接超时时间/毫秒（连接上服务器(握手成功)的时间，超出抛出connect timeout）
clientHttpRequestFactory.setConnectTimeout(5 * 1000);
// 数据读取超时时间(socketTimeout)/毫秒（务器返回数据(response)的时间，超过抛出read timeout）
clientHttpRequestFactory.setReadTimeout(10 * 1000);
// 连接池获取请求连接的超时时间，不宜过长，必须设置/毫秒（超时间未拿到可用连接，会抛出org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool）
clientHttpRequestFactory.setConnectionRequestTimeout(10 * 1000);
return clientHttpRequestFactory;
}
@Bean
public HttpClient httpClient(HttpClientConnectionManager poolingHttpClientConnectionManager) {
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
// 设置http连接管理器
httpClientBuilder.setConnectionManager(poolingHttpClientConnectionManager);
return httpClientBuilder.build();
}
@Bean
public HttpClientConnectionManager poolingHttpClientConnectionManager() {
PoolingHttpClientConnectionManager poolingHttpClientConnectionManager = new PoolingHttpClientConnectionManager();
// 最大连接数
poolingHttpClientConnectionManager.setMaxTotal(500);
// 同路由并发数（每个主机的并发）
poolingHttpClientConnectionManager.setDefaultMaxPerRoute(100);
return poolingHttpClientConnectionManager;
}
}
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