请教关于对象型请求参数如何在NR中传递

lambilly

以下为黄鸟抓包水务公众号的请求原始头文件。其中请求体中的“requestPara”中的参数，如何传达到POST请求。请大佬指教。

POST /iwater/v1/watermeter/queryPayMentInfo/v2.json HTTP/1.1
Host: wt.ptswater.cn
Connection: keep-alive
Content-Length: 291
Accept: application/json, text/plain, */*
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 NetType/WIFI MicroMessenger/7.0.20.1781(0x6700143B) WindowsWechat(0x63090c0f) XWEB/11253 Flue
Content-Type: application/x-www-form-urlencoded
Origin: https://wt.ptswater.cn
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: https://wt.ptswater.cn/h5/
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh;q=0.9

requestPara={"meterNumber":"100048853","startDate":"20240101","endDate":"20241231","payStatus":"2","token":"JbwSSaXtbJBlD0CFOCRoaFNa-7j-KRDl7uIv2H8dTSWR2ERk8B8X3y_f2KAn1_ubq8SZGwSoJ_SbbbNQMcsqaA","waterCorpId":3,"UNID":"","areaId":0,"accountType":"XJ","apiType":"JSAPI","appVersion":"1.0.2"}

以下我用FUCTION编写的请求头函数：
msg.headers = {
'Connection': 'keep-alive',
'Content-Length': '291',
'Accept': 'application/json, text/plain, */*',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 NetType/WIFI MicroMessenger/7.0.20.1781(0x6700143B) WindowsWechat(0x63090c0f) XWEB/11253 Flue',
'Content-Type': 'application/x-www-form-urlencoded',
'Origin: https':'//wt.ptswater.cn',
'Sec-Fetch-Site': 'same-origin',
'Sec-Fetch-Mode': 'cors',
'Sec-Fetch-Dest': 'empty',
'Referer: https':'//wt.ptswater.cn/h5/',
'Accept-Encoding': 'gzip, deflate, br',
'Accept-Language': 'zh-CN,zh;q=0.9',
}
msg.payload= {
    requestPara:{
    "meterNumber":"100048853",
    "startDate":"20240101",
    "endDate":"20241231",
    "payStatus":"2",
    "token":"JbwSSaXtbJBlD0CFOCRoaFNa-7j-KRDl7uIv2H8dTSWR2ERk8B8X3y_f2KAn1_ubq8SZGwSoJ_SbbbNQMcsqaA",
    "waterCorpId":3,
    "UNID":"",
    "areaId":0,
    "accountType":"XJ",
    "apiType":"JSAPI",
    "appVersion":"1.0.2"
    }   
}
return msg;

请求时会出现


RequestError: Header name must be a valid HTTP token ["Origin: https"] : https://wt.ptswater.cn/iwater/v1 ... PayMentInfo/v2.json

louis_lee

'Origin: https':'//wt.ptswater.cn',

看错误提示，这个地方写错了

leung

楼上说对了，可以用postman跑通了，再用nodered

lambilly

louis_lee 发表于 2024-9-19 16:33
看错误提示，这个地方写错了

这个地方改好了，现在就是请求无响应。

louis_lee

lambilly 发表于 2024-9-19 16:49
这个地方改好了，现在就是请求无响应。

有空试了试，json需要转义成字符串才能传给表单数据，我这可以获取数据

msg.headers = {
'Content-Type': 'application/x-www-form-urlencoded',
}

msg.payload={
    "requestPara":"{\"meterNumber\":\"100048853\", \"startDate\":\"20240101\", \"endDate\":\"20241231\",\"payStatus\":\"2\",\"token\":\"JbwSSaXtbJBlD0CFOCRoaFNa-7j-KRDl7uIv2H8dTSWR2ERk8B8X3y_f2KAn1_ubq8SZGwSoJ_SbbbNQMcsqaA\",\"waterCorpId\":3,\"areaId\":0,\"accountType\":\"XJ\",\"apiType\":\"JSAPI\",\"appVersion\":\"1.0.2\"}"
}

return msg;

lambilly

louis_lee 发表于 2024-9-19 17:01
有空试了试，json需要转义成字符串才能传给表单数据，我这可以获取数据

msg.headers = {

感谢大佬，确实可以。还有一个请教一下。为什么头中加上这句'Content-Length': '291',，就会显示
message: "参数类型错误"
status: -1

louis_lee

lambilly 发表于 2024-9-19 19:49
感谢大佬，确实可以。还有一个请教一下。为什么头中加上这句'Content-Length': '291',，就会显示
message ...

Content-Length都是自己计算的，你写死后就会override自动计算的结果。这种情况下，如果override的结果小于实际的值，就会造成数据读不全。

具体到他这个案例，应该是服务端收到数据后，由于上述原因，无法将反序列化成对象，抛出error包装后返回到前端。