postman上一个接口返回值作为下一个接口的入参

1.在第一个接口中提取响应数据

假设接口返回以下数据：

{"total": 2,"rows": [{"createBy": null,"createTime": "2024-07-21 12:54:24","updateBy": null,"updateTime": "2024-09-09 15:03:31","remark": "","pageNum": null,"pageSize": null,"model": null,"deviceId": 134,"deviceName": "12345678","deviceSecret": "389092c0e608ee50f6089f4fe445ecb2","iotId": "YrYcf5lMY411Ygd4f5G6k0rs40","regenInfo": null,"selfCheckRes": null,"nickName": "12345678","productKey": "k0rs4YHsimt","gmtActive": null,"gmtCreate": null,"region": "cn-shanghai","status": "OFFLINE","userId": "313073773593104384","deviceError": null,"leakAlarm": null,"lowSaltWarn": null,"lbs": null,"regenTime": null,"workMode": null,"selfCheckSw": null,"hardWaterSw": 0,"reqtoRegenSw": 1,"hardness": null,"saltPer": null,"dailyUsedWater": null,"waterYield": null,"productName": "IOT软水机","iotInstanceId": "iot-06z00bjektr6gff","endpointOverride": "iot.cn-shanghai.aliyuncs.com","fullAddress": null,"installationAddress": null,"userBoundTime": "2024-09-04 11:21:53","userName": "微信用户e1609","version": null,"gmtOnline": null,"ipAddress": null,"nodeType": 0,"regenCheckRes": null,"posHoldTime": null,"qrCodeAddress": "https://fobrite123.oss-cn-hangzhou.aliyuncs.com/qr_codes/qr_12345678.png","userPhone": "15850559780","residualFlow": null,"arrearsStatus": null,"firstBoundTime": "2024-09-04 11:21:51"},{"createBy": null,"createTime": "2024-07-20 09:59:37","updateBy": null,"updateTime": "2024-09-14 14:15:55","remark": "","pageNum": null,"pageSize": null,"model": null,"deviceId": 130,"deviceName": "898608401024D0194097","deviceSecret": "45b55bbfd571dc3ec7d50328c689e3dc","iotId": "Zk5FvmYcQVT9mkYFDVNnk0rs40","regenInfo": null,"selfCheckRes": "{\"Brine\": 1, \"Outlet\": 1, \"Sewage\": 1}","nickName": "体验样机4","productKey": "k0rs4YHsimt","gmtActive": null,"gmtCreate": null,"region": "cn-shanghai","status": "OFFLINE","userId": "315173099693805568","deviceError": null,"leakAlarm": null,"lowSaltWarn": null,"lbs": "{\"Lat\": 31.8419, \"Lng\": 118.8304}","regenTime": "{\"Min\": 0, \"Days\": 7, \"Hour\": 2}","workMode": 0,"selfCheckSw": 0,"hardWaterSw": 0,"reqtoRegenSw": 1,"hardness": 2,"saltPer": 0,"dailyUsedWater": 0,"waterYield": "{\"Nominal\": 1827, \"Surplus\": 1043, \"TodayWaterUse\": 0}","productName": "IOT软水机","iotInstanceId": "iot-06z00bjektr6gff","endpointOverride": "iot.cn-shanghai.aliyuncs.com","fullAddress": "前靖路1号，盛福花园","installationAddress": "江苏省南京市江宁区","userBoundTime": "2024-07-20 10:02:46","userName": "微信用户e35b7","version": "{\"Model\": \"IOT\", \"Hardware\": \"D240407\", \"Software\": \"24072001\"}","gmtOnline": null,"ipAddress": null,"nodeType": 0,"regenCheckRes": "{\"Brine\": 1, \"Rinse\": 1, \"Refill\": 1, \"BackWash\": 1, \"Dissolve\": 1}","posHoldTime": "{\"Brine\": 40, \"Rinse\": 2, \"Refill\": 5, \"Dissove\": 120, \"BackWash\": 1}","qrCodeAddress": "https://fobrite123.oss-cn-hangzhou.aliyuncs.com/qr_codes/qr_898608401024D0194097.png","userPhone": "13905141286","residualFlow": null,"arrearsStatus": null,"firstBoundTime": "2024-07-20 10:02:45"}],"code": 200,"msg": "查询成功"
}

在第一个接口的 Tests 标签中编写脚本：
在这里插入图片描述

// 提取响应中的 deviceId并保存为环境变量
const jsonData = pm.response.json();
pm.environment.set("deviceId", jsonData.rows[0].deviceId); // 调试：打印变量值（通过 Postman Console 查看）
console.log("deviceId:", pm.environment.get("deviceId"));