前言

后端难免会发送请求，大致分为两种请求：微服务之间的内部请求和系统之间的外部请求，org.springframework.web.client.RestTemplate对这两种请求都支持。

使用

配置

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 RestTemplateConfig {/** 微信服务间的内部调用配置*/@Bean(value = {"restTemplateFeign"})@LoadBalancedpublic RestTemplate restTemplateFeign() {return new RestTemplate();}/** 外部调用配置*/@Bean(value = "restTemplateHttp")public RestTemplate restTemplateHttp() {return new RestTemplate();}
}

具体使用

1、内部调用
注入

@Autowired
private RestTemplate restTemplateFeign;

调用

/*** @Descriptio 发送请求* @param billPushObject* @return com.hw.common.web.AjaxResult*/private AjaxResult send(String pushUrl,JSONObject billPushObject){AjaxResult ajaxResult = restTemplateFeign.postForObject(pushUrl,billPushObject, AjaxResult.class);Integer code = (Integer) ajaxResult.get(AjaxResult.CODE_TAG);if(code == 200){}return ajaxResult;}

2、外部调用
注入

@Resource(name = "restTemplateHttp")
private RestTemplate restTemplateHttp;

调用

public LoginUser regionLoginSso(String ticket) {log.info("致信oa调用登录ticket:{}", ticket);String url = seeyonUrl + ticket;log.info("致信oa调用登录url:{}", url);String reson = restTemplateHttp.getForObject(url, String.class);log.info("致信oa调用成功参数:{}", reson);if(org.springframework.util.StringUtils.isEmpty(reson)){throw new CustomException("用户不存在!");}String[] split = reson.split("\n");return regionLoginSsoByTicket(split[0]);}