pom

<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.13</version>
</dependency>
<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpmime</artifactId><version>4.5.13</version>
</dependency>

格外增加一个工具方法，处理JSON

<!--        HuTool工具库-->
<dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.8.28</version>
</dependency>

config类

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;/*** Rest服务* 便捷访问远程Http服务** @author fir*/
@Configuration
public class ResTemplateConfig {@Beanpublic RestTemplate restTemplate(ClientHttpRequestFactory factory) {return new RestTemplate(factory);}@Beanpublic ClientHttpRequestFactory simpleClientHttpRequestFactory() {HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();//超时设置//msfactory.setReadTimeout(120000);//msfactory.setConnectTimeout(120000);return factory;}
}

业务类-Post方法调用

import cn.hutool.json.JSONUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.ResourceAccessException;
import org.springframework.web.client.RestTemplate;import javax.annotation.Resource;
import java.util.HashMap;/*** <p>* 网络信息数据获取 前端控制器* </p>** @author fir*/
@Slf4j
@RestController
@RequestMapping("/test")
public class TestController {@Resourceprivate RestTemplate restTemplate;@GetMapping("/a")public String bodyList() {log.info("[Http服务]调用中...");String url = "http://127.0.0.1:22225/toReportAlarm";// 请求参数HashMap<String, Object> map = new HashMap<>();map.put("informList", "test");//请求头处理HttpHeaders httpHeaders = new HttpHeaders();httpHeaders.add("Authorization", "token");httpHeaders.add("accept", "application/json");httpHeaders.add("Content-Type", "application/json");// 请求参数构建HttpEntity<String> fromEntity = new HttpEntity<>(JSONUtil.toJsonStr(map), httpHeaders);try {ResponseEntity<String> responseEntity = restTemplate.postForEntity(url, fromEntity, String.class);log.info("[Http服务]返回值:" + responseEntity.getBody());log.info("[Http服务]调用成功!");} catch (ResourceAccessException e) {log.info("[Http服务]调用失败，无法连接到服务器 {}", url);}return null;}}