iHotel_student_houtai/src/main/java/com/template/model/weixin/MyRestTempleteUtil.java

package com.template.model.weixin;

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;

/**
 * @Author: codingliang
 * @Description: http工具
 * @Date: 2021-06-07 10:52
 * @Version: V1.0
 **/
public class MyRestTempleteUtil {

    /**
     * 微信支付域名【中国国内可用域名】
     */
    private static final String WECHATPAYV3HOST = "https://api.mch.weixin.qq.com";

    /**
     * 请求微信支付V3接口
     * @param urlSuffix 请求接口地址，需要以 ”/“ 开头
     * @param httpMethod 请求方法
     * @param authStr auth字符串
     * @param body 请求参数
     * @return
     */
    public ResponseEntity<String> exchangeForWechatV3Pay(String urlSuffix, HttpMethod httpMethod, String authStr, String body) {

        // 构建请求头
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        headers.add("Authorization", authStr);
        headers.add("Wechatpay-Serial", "61A33563F6158C1B921A27A23A4E94E963DD53DD"); // 61A** 平台证书
        headers.add("User-Agent", "WeChatPay-HttpClient/null (Windows 10/10.0) Java/1.8.0_171");
        headers.add("Accept", "application/json");
        headers.add("Content-Type", "application/json");

        // 构建请求参数
        HttpEntity<String> entity = new HttpEntity<>(body, headers);

        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity<String> responseEntity;
        try {
            // 发送请求
            responseEntity = restTemplate.exchange(WECHATPAYV3HOST.concat(urlSuffix), httpMethod, entity, String.class);
            System.out.println("responseEntity = " + responseEntity);
        } catch (Exception e) {
            e.printStackTrace();
            throw new RRException(BizCodeEnume.GET_PAY_PARAM_ERROR);
        }

        // 返回响应结果
        return responseEntity;
    }
}