RestTemplate远程调用之设置超时时间的几种方式

RestTemplate远程调用之设置超时时间的几种方式

1. 通过SimpleClientHttpRequestFactory设置

设置方式1: SimpleClientHttpRequestFactory

package com.yuan.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

/**
 * 设置RestTemplate超时时间，单位:毫秒
 * 如这里设置为10分钟
 */
@Configuration
public class RestTemplateTimeOutConfig {
    /**
     * 方式1: SimpleClientHttpRequestFactory
     * @return
     */
    @Bean
    public RestTemplate restTemplate() {
        SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
        requestFactory.setConnectTimeout(1000 * 60 * 60 * 10);
        requestFactory.setReadTimeout(1000 * 60 * 60 * 10);
        return new RestTemplate(requestFactory);
    }
}

2. 通过HttpComponentsClientHttpRequestFactory设置

设置方式2： 通过 ClientHttpRequestFactory

package com.yuan.config;

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;

/**
 * 设置RestTemplate超时时间，单位:毫秒
 * 如这里设置为10分钟
 */
@Configuration
public class RestTemplateTimeOutConfig {
    /**
     * 设置方式2： 通过 ClientHttpRequestFactory
     *
     * @return
     */
    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate(clientHttpRequestFactory());
    }

    @Bean
    public ClientHttpRequestFactory clientHttpRequestFactory() {
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
        //读取超时，单位：毫秒
        factory.setReadTimeout(1000 * 60 * 60 * 10);
        //连接超时，单位：毫秒
        factory.setConnectTimeout(1000 * 60 * 60 * 10);
        factory.setConnectionRequestTimeout(3000);
        return factory;
    }
}

3.通过HttpClient设置

设置方式3： 通过 HttpComponentsClientHttpRequestFactory + HttpClient

package com.yuan.config;

import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
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;

/**
 * 设置RestTemplate超时时间，单位:毫秒
 * 如这里设置为10分钟
 */
@Configuration
public class RestTemplateTimeOutConfig {
    /**
     * 设置方式3： 通过 HttpComponentsClientHttpRequestFactory + HttpClient
     *
     * @return
     */
    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate(clientHttpRequestFactory());
    }

    @Bean
    public ClientHttpRequestFactory clientHttpRequestFactory() {
        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
        connectionManager.setMaxTotal(400);

        //路由是对maxTotal的细分
        connectionManager.setDefaultMaxPerRoute(100);
        RequestConfig requestConfig = RequestConfig.custom()
                .setSocketTimeout(1000 * 60 * 3)  //返回数据的超时时间,单位是毫秒： 这里设置为3分钟
                .setConnectTimeout(1000 * 60 * 5) //连接上服务器的超时时间 单位是毫秒： 这里设置为5分钟
                .setConnectionRequestTimeout(1000) //从连接池中获取连接的超时时间
                .build();
        return HttpClientBuilder.create()
                .setDefaultRequestConfig(requestConfig)
                .setConnectionManager(connectionManager)
                .build();
    }
}