mazhongjun/src/main/java/com/zhentao/controller/Diff.java

package com.zhentao.controller;

import cn.hutool.http.HttpRequest;
import cn.hutool.http.HttpResponse;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import org.springframework.util.DigestUtils;

import java.util.Map;
import java.util.TreeMap;

public class Diff {
    private static final String APP_ID = "test_app";
    private static final String APP_SECRET = "12";
    private static final String API_URL = "http://localhost:8080/api/hello";
    public static void main(String[] args) {
        Long goodsId = 123L;
        String reqId = "req_123";
        Long reqTime = System.currentTimeMillis();
        Map<String, String> params = new TreeMap<>(); // TreeMap自动按key排序
        params.put("goodsId", goodsId.toString());
        params.put("reqId", reqId);
        params.put("reqTime", reqTime.toString());
        params.put("appId", APP_ID);
        StringBuilder sb = new StringBuilder();
        for (Map.Entry<String,String> entry:params.entrySet()) {
            sb.append(entry.getKey()).append("=").append(entry.getValue()).append("&");
        }
        sb.append(APP_SECRET);
        String sign = DigestUtils.md5DigestAsHex(sb.toString().getBytes());
        HttpResponse response = HttpRequest.get(API_URL + "?goodsId=" + goodsId)
                .header("reqId", reqId)
                .header("reqTime", reqTime.toString())
                .header("appId", APP_ID)
                .header("sign", sign)
                .execute();
        JSONObject json = JSONUtil.parseObj(response.body());
        String status = json.getStr("status");
        if ("200".equals(status)) {
            System.out.println("响应结果: " + json);
            System.out.println("商品名称: " + json.getStr("data"));
        }else {
            System.err.println("响应结果: " + json);
            System.err.println("请求失败，状态码: " + status);
        }


    }
}