RestTemplate发送带请求头的Json的Post请求Utils工具类

RestTemplate发送带请求头的Json的Post请求

import java.time.Duration;
import java.util.Map;
import java.util.Optional;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.ResponseEntity;
import org.springframework.lang.Nullable;
import org.springframework.web.client.RestClientException;
import org.springframework.web.client.RestTemplate;

public class HttpPostJson {

    // 设置请求超时时间10s
    private static final RestTemplate restTemplate = new RestTemplateBuilder()
        .setConnectTimeout(Duration.ofSeconds(10L)).setReadTimeout(Duration.ofSeconds(10L)).build();
    // 日志记录
    private static final Logger logger = LoggerFactory.getLogger(HttpPostJson.class);

    /**
     * 通过url 请求头信息 请求参数信息 Post请求
     * @param url 访问Url
     * @param headers 请求头信息
     * @param parameters 请求参数
     * @param 动态类型
     * @return Optional<T> 返回值
     */
    public static final <T> Optional<T> postJson(@Nullable String url, Map<String, String> headers,
        @Nullable Map<String, Object> parameters, @Nullable Class<T> clazz) {

        HttpHeaders httpHeaders = new HttpHeaders();

        if (null != headers) {
            headers.forEach((key, value) -> {
                httpHeaders.add(key, value);
            });
        }

        HttpEntity<Map<String, Object>> httpEntity = new HttpEntity<Map<String, Object>>(parameters, httpHeaders);

        ResponseEntity<T> responseEntity = null;
        try {
            responseEntity = restTemplate.postForEntity(url, httpEntity, clazz);
        } catch (RestClientException e) {
            // 打印异常日志
            logger.error(e.getMessage());
        }

        if (null == responseEntity) {
            logger.error("返回结果为空");
        } else if (200 == responseEntity.getStatusCodeValue()) {
            return Optional.of(responseEntity.getBody());
        } else {
            logger.error(responseEntity.getStatusCode().toString());
        }

        return Optional.empty();
    }

}

 

本文地址：https://blog.csdn.net/liwenyang1992/article/details/107674491