循环JSON数组并使用node.js获取值
我有json字符串中的http请求，我需要响应。。 我需要从字符串中获取值，以便能够返回响应 正是我需要的价值 queryResult->outputContexts->name first（项目）。 json字符串如下所示：循环JSON数组并使用node.js获取值,node.js,arrays,json,parsing,Node.js,Arrays,Json,Parsing,我有json字符串中的http请求，我需要响应。。 我需要从字符串中获取值，以便能够返回响应 正是我需要的价值 queryResult->outputContexts->name first（项目）。 json字符串如下所示： { "responseId": "61e3f7da-b529-49e0-80-9eaae4695ec1-ee7586fb", "queryResult": { "quer
{
"responseId": "61e3f7da-b529-49e0-80-9eaae4695ec1-ee7586fb",
"queryResult": {
"queryText": "Get My VIP Card",
"parameters": {
"PARAM": ""
},
"allRequiredParamsPresent": true,
"outputContexts": [
{
"name": "projects/mbmsoft-nehh/agent/sessions/v-2-404581/contexts/fulllllll-followup",
"lifespanCount": 1,
"parameters": {
"PARAM": "",
"PARAM.original": ""
}
},
{
"name": "projects/mbmsoft-nehh/agent/sessions/v-2-4024581/contexts/__system_counters__",
"lifespanCount": 1,
"parameters": {
"no-input": 0,
"no-match": 0,
"PARAM": "",
"PARAM.original": ""
}
}
],
"intent": {
"name": "projects/mbmsoft-nehh/agent/intents/74a9a-335b-46ea-817a-2cb45fcc04a5",
"displayName": "fulllllll"
},
"intentDetectionConfidence": 1,
"languageCode": "en"
},
"originalDetectIntentRequest": {
"payload": {
"source": "viber",
"body": {
"timestamp": 1604958504809,
"event": "message",
"silent": false,
"sender": {
"api_version": 8,
"name": "john smith",
"country": "MK",
"language": "en-US",
"id": "as6q0NaBQjKiTPDw=="
},
"message": {
"type": "text",
"text": "Get My VIP Card"
},
"chat_hostname": "SN-CHAT-10_",
"message_token": 5506704778261146000
},
"contact": {
"cId": "as6q0NQQ+IdadsajKiTPDw=="
}
}
},
"session": "projects/mbmsoft-nehh/agent/sessions/v-2-424581"
}
exports.id_session = function () {
const { queryResult } = response;
const { outputContexts } = queryResult;
const nameArray = outputContexts.map(({ name }) => {
return name;
});
console.log(nameArray)
let a, b, rest;
[a, ...rest] = nameArray;
console.log(a);
return a;
};
非常感谢执行您希望看到的操作，因为queryResult->OutputContext是一个数组。另外，为了理解我发布的解决方案的某些部分，关于
const响应={
“响应ID:“61e3f7da-b529-49e0-80-9eaae4695ec1-ee7586fb”，
“查询结果”：{
“queryText”：“获取我的VIP卡”，
“参数”：{
“参数”：”
},
“allRequiredParamsPresent”：真，
“输出上下文”：[
{
“名称”：“projects/mbmsoft nehh/agent/sessions/v-2-404581/context/fulllllll followup”，
“生命计数”：1，
“参数”：{
“参数”：“，
“原始参数”：”
}
},
{
“名称”：“projects/mbmsoft nehh/agent/sessions/v-2-4024581/contexts/_____系统计数器”，
“生命计数”：1，
“参数”：{
“无输入”：0，
“不匹配”：0，
“参数”：“，
“原始参数”：”
}
}
],
“意图”：{
“名称”：“项目/mbmsoft nehh/agent/intents/74a9a-335b-46ea-817a-2cb45fcc04a5”，
“displayName”：“fulllllll”
},
“意向检测信心”：1，
“语言代码”：“en”
},
“原始检测任务”：{
“有效载荷”：{
“来源”：“毒蛇”，
“正文”：{
“时间戳”：1604958504809，
“事件”：“消息”，
“沉默”：假，
“发件人”：{
“api_版本”：8，
“姓名”：“约翰·史密斯”，
“国家”：“MK”，
“语言”：“en US”，
“id”：“as6q0NaBQjKiTPDw==”
},
“信息”：{
“类型”：“文本”，
“文本”：“获取我的VIP卡”
},
“聊天室主机名”：“SN-chat-10”，
“消息令牌”：5506704778261146000
},
“联系人”：{
“cId”：“as6q0NQQ+IdadsajKiTPDw=”
}
}
},
“会话”：“projects/mbmsoft nehh/agent/sessions/v-2-424581”
};
const{queryResult}=响应；
const{outputContexts}=queryResult；
outputContexts.forEach（{name}）=>{
console.log（名称）；
});
const nameArray=outputContexts.map（{name}）=>{
返回名称；
});
log（nameArray）1.我按照@Nicolas Mauricio的指示，前进如下：
{
"responseId": "61e3f7da-b529-49e0-80-9eaae4695ec1-ee7586fb",
"queryResult": {
"queryText": "Get My VIP Card",
"parameters": {
"PARAM": ""
},
"allRequiredParamsPresent": true,
"outputContexts": [
{
"name": "projects/mbmsoft-nehh/agent/sessions/v-2-404581/contexts/fulllllll-followup",
"lifespanCount": 1,
"parameters": {
"PARAM": "",
"PARAM.original": ""
}
},
{
"name": "projects/mbmsoft-nehh/agent/sessions/v-2-4024581/contexts/__system_counters__",
"lifespanCount": 1,
"parameters": {
"no-input": 0,
"no-match": 0,
"PARAM": "",
"PARAM.original": ""
}
}
],
"intent": {
"name": "projects/mbmsoft-nehh/agent/intents/74a9a-335b-46ea-817a-2cb45fcc04a5",
"displayName": "fulllllll"
},
"intentDetectionConfidence": 1,
"languageCode": "en"
},
"originalDetectIntentRequest": {
"payload": {
"source": "viber",
"body": {
"timestamp": 1604958504809,
"event": "message",
"silent": false,
"sender": {
"api_version": 8,
"name": "john smith",
"country": "MK",
"language": "en-US",
"id": "as6q0NaBQjKiTPDw=="
},
"message": {
"type": "text",
"text": "Get My VIP Card"
},
"chat_hostname": "SN-CHAT-10_",
"message_token": 5506704778261146000
},
"contact": {
"cId": "as6q0NQQ+IdadsajKiTPDw=="
}
}
},
"session": "projects/mbmsoft-nehh/agent/sessions/v-2-424581"
}
exports.id_session = function () {
const { queryResult } = response;
const { outputContexts } = queryResult;
const nameArray = outputContexts.map(({ name }) => {
return name;
});
console.log(nameArray)
let a, b, rest;
[a, ...rest] = nameArray;
console.log(a);
return a;
};
由于我是node.js的新手，我将感谢任何能够发送其他方法从json数组中提取值的人。与此同时，我发现了一种从json数组中获取值的非常简单的方法，如下所示：
{
"responseId": "61e3f7da-b529-49e0-80-9eaae4695ec1-ee7586fb",
"queryResult": {
"queryText": "Get My VIP Card",
"parameters": {
"PARAM": ""
},
"allRequiredParamsPresent": true,
"outputContexts": [
{
"name": "projects/mbmsoft-nehh/agent/sessions/v-2-404581/contexts/fulllllll-followup",
"lifespanCount": 1,
"parameters": {
"PARAM": "",
"PARAM.original": ""
}
},
{
"name": "projects/mbmsoft-nehh/agent/sessions/v-2-4024581/contexts/__system_counters__",
"lifespanCount": 1,
"parameters": {
"no-input": 0,
"no-match": 0,
"PARAM": "",
"PARAM.original": ""
}
}
],
"intent": {
"name": "projects/mbmsoft-nehh/agent/intents/74a9a-335b-46ea-817a-2cb45fcc04a5",
"displayName": "fulllllll"
},
"intentDetectionConfidence": 1,
"languageCode": "en"
},
"originalDetectIntentRequest": {
"payload": {
"source": "viber",
"body": {
"timestamp": 1604958504809,
"event": "message",
"silent": false,
"sender": {
"api_version": 8,
"name": "john smith",
"country": "MK",
"language": "en-US",
"id": "as6q0NaBQjKiTPDw=="
},
"message": {
"type": "text",
"text": "Get My VIP Card"
},
"chat_hostname": "SN-CHAT-10_",
"message_token": 5506704778261146000
},
"contact": {
"cId": "as6q0NQQ+IdadsajKiTPDw=="
}
}
},
"session": "projects/mbmsoft-nehh/agent/sessions/v-2-424581"
}
exports.id_session = function () {
const { queryResult } = response;
const { outputContexts } = queryResult;
const nameArray = outputContexts.map(({ name }) => {
return name;
});
console.log(nameArray)
let a, b, rest;
[a, ...rest] = nameArray;
console.log(a);
return a;
};
重要提示（特别是对于初学者）：
若您正在接收http请求的响应，那个么响应将以文本字符串的形式出现，所以您首先需要将JSON对象转换为be abblle，以便从数组中提取值
响应的完整示例写在这个线程的开头
http request code
...
res.on("end", function (chunk) {
var body = Buffer.concat(chunks);
const response = JSON.parse(body.toString()); //convert string to JSON object
var result = response.originalDetectIntentRequest.payload.contact.cId;
console.log(result);
return result;
});
或：
也许可以尝试类似的方法：queryResult.outputContexts.map（obj=>{return{name:obj.name}}）。我不确定这是否是你想要的。