设计模式：构建者模式

package cn.tju.edu.config;

import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class RestConfig {
    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate(){
        RestTemplateBuilder restTemplateBuilder=new RestTemplateBuilder();
        restTemplateBuilder.setConnectTimeout(3000);
        restTemplateBuilder.setReadTimeout(5000);
        RestTemplate restTemplate=restTemplateBuilder.build();
        return restTemplate;
    }
}