Spring将带有body (json)的简单rest POST重定向到另一个端口

import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;

@RestController
public class RedirectController {

    @PostMapping("/redirect")
    public ResponseEntity<String> redirect(@RequestBody String requestBody) {
        // 创建RestTemplate对象
        RestTemplate restTemplate = new RestTemplate();

        // 设置请求头
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);

        // 创建HttpEntity对象，设置请求体和请求头
        HttpEntity<String> requestEntity = new HttpEntity<>(requestBody, headers);

        // 发送POST请求并获取响应
        ResponseEntity<String> responseEntity = restTemplate.exchange("http://目标端口/目标路径", HttpMethod.POST, requestEntity, String.class);

        // 返回响应
        return responseEntity;
    }
}