spring boot应用程序通过json中的resttemplate进行定期post请求

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@Bean
public RestTemplate restTemplate() {
    return new RestTemplate();
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;

@Component
public class MyRestClient {
    
    @Autowired
    private RestTemplate restTemplate;
    
    public void sendPostRequest() {
        String url = "http://example.com/api";
        
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        
        String requestBody = "{\"key\":\"value\"}";
        HttpEntity<String> requestEntity = new HttpEntity<>(requestBody, headers);
        
        ResponseEntity<String> responseEntity = restTemplate.postForEntity(url, requestEntity, String.class);
        String responseBody = responseEntity.getBody();
        
        // 处理响应结果
    }
}