RestTemplate get 方式 getForEntity

https://www.bilibili.com/video/BV1AN411Z7mx?p=10

getForEntity 和 getForObject 的区别在于：getForEntity 包含响应头

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;

import java.util.HashMap;
import java.util.Map;

@SpringBootTest
public class ClientApplicationTests {

    @Test
    void getForEntity() {
        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity<String> entity = restTemplate.getForEntity("http://localhost:8080/demo", String.class);
        System.out.println(entity.getBody());
        System.out.println(entity.getStatusCodeValue());
        System.out.println(entity.getStatusCode());
        System.out.println(entity.getHeaders());
        System.out.println(entity.getHeaders().getContentType().toString());
        System.out.println(entity.getHeaders().get("Content-Type").get(0));
    }

}

demo
200
200 OK
[Content-Type:"text/plain;charset=UTF-8", Content-Length:"4", Date:"Sun, 26 Mar 2023 06:27:31 GMT", Keep-Alive:"timeout=60", Connection:"keep-alive"]
text/plain;charset=UTF-8
text/plain;charset=UTF-8