Javascript My node.json解析函数抛出错误

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嗨

我试图解析json数据以提取不同的值，但我遇到了错误。你能帮忙吗

JSON数据

原始JSON数据样本：

{"records":{"expiryDates":["03-Jun-2021","10-Jun-2021","17-Jun-2021","24-Jun-2021","01-Jul-2021","08-Jul-2021","15-Jul-2021","22-Jul-2021","29-Jul-2021","26-Aug-2021","30-Sep-2021","30-Dec-2021"],"data":[{"strikePrice":18000,"expiryDate":"30-Sep-2021","PE":{"strikePrice":18000,"expiryDate":"30-Sep-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-09-2021PE18000.00","openInterest":1,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":0.25,"change":0,"pChange":0,"totalBuyQuantity":23100,"totalSellQuantity":0,"bidQty":10000,"bidprice":5,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":23000,"expiryDate":"24-Jun-2021","PE":{"strikePrice":23000,"expiryDate":"24-Jun-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY24-06-2021PE23000.00","openInterest":534,"changeinOpenInterest":-6,"pchangeinOpenInterest":-1.1111111111111112,"totalTradedVolume":82,"impliedVolatility":63.23,"lastPrice":9.5,"change":-2.5,"pChange":-20.833333333333336,"totalBuyQuantity":2775,"totalSellQuantity":875,"bidQty":50,"bidprice":9.5,"askQty":50,"askPrice":9.95,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"30-Sep-2021","PE":{"strikePrice":24000,"expiryDate":"30-Sep-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-09-2021PE24000.00","openInterest":0,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":0,"change":0,"pChange":0,"totalBuyQuantity":20575,"totalSellQuantity":0,"bidQty":5000,"bidprice":5,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"30-Dec-2021","PE":{"strikePrice":24000,"expiryDate":"30-Dec-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-12-2021PE24000.00","openInterest":11,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":180,"change":0,"pChange":0,"totalBuyQuantity":100,"totalSellQuantity":0,"bidQty":50,"bidprice":151.55,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"24-Jun-2021","CE":{"strikePrice":24000,"expiryDate":"24-Jun-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY24-06-2021CE24000.00","openInterest":1,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":9223.8,"change":0,"pChange":0,"totalBuyQuantity":3650,"totalSellQuantity":2900,"bidQty":750,"bidprice":11073.95,"askQty":500,"askPrice":11544.4,"underlyingValue":35141.45},"PE":

async function formatDataAndStore(resp){
    return new Promise((resolve,reject)=>{
    //let myDate = new Date();
    //let currentTime = myDate.getHours()*100 + Math.floor(myDate.getMinutes()/5)*5;

    (resp.records.data).forEach(element => {
        console.log(JSON.parse(element.PE));
    });

    })
}

> (node:12578) UnhandledPromiseRejectionWarning: SyntaxError: Unexpected
> token o in JSON at position 1
>     at JSON.parse (<anonymous>)
>     at /Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:79:26
>     at Array.forEach (<anonymous>)
>     at /Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:78:25
>     at new Promise (<anonymous>)
>     at formatDataAndStore (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:74:12)
>     at Query.<anonymous> (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:55:15)
>     at Query.<anonymous> (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/Connection.js:526:10)
>     at Query._callback (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/Connection.js:488:16)
>     at Query.Sequence.end (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/protocol/sequences/Sequence.js:83:24)
> (Use `node --trace-warnings ...` to show where the warning was
> created) (node:12578) UnhandledPromiseRejectionWarning: Unhandled
> promise rejection. This error originated either by throwing inside of
> an async function without a catch block, or by rejecting a promise
> which was not handled with .catch(). To terminate the node process on
> unhandled promise rejection, use the CLI flag
> `--unhandled-rejections=strict` (see
> https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode).
> (rejection id: 2) (node:12578) [DEP0018] DeprecationWarning: Unhandled
> promise rejections are deprecated. In the future, promise rejections
> that are not handled will terminate the Node.js process with a
> non-zero exit code.

My node.js代码：

{"records":{"expiryDates":["03-Jun-2021","10-Jun-2021","17-Jun-2021","24-Jun-2021","01-Jul-2021","08-Jul-2021","15-Jul-2021","22-Jul-2021","29-Jul-2021","26-Aug-2021","30-Sep-2021","30-Dec-2021"],"data":[{"strikePrice":18000,"expiryDate":"30-Sep-2021","PE":{"strikePrice":18000,"expiryDate":"30-Sep-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-09-2021PE18000.00","openInterest":1,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":0.25,"change":0,"pChange":0,"totalBuyQuantity":23100,"totalSellQuantity":0,"bidQty":10000,"bidprice":5,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":23000,"expiryDate":"24-Jun-2021","PE":{"strikePrice":23000,"expiryDate":"24-Jun-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY24-06-2021PE23000.00","openInterest":534,"changeinOpenInterest":-6,"pchangeinOpenInterest":-1.1111111111111112,"totalTradedVolume":82,"impliedVolatility":63.23,"lastPrice":9.5,"change":-2.5,"pChange":-20.833333333333336,"totalBuyQuantity":2775,"totalSellQuantity":875,"bidQty":50,"bidprice":9.5,"askQty":50,"askPrice":9.95,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"30-Sep-2021","PE":{"strikePrice":24000,"expiryDate":"30-Sep-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-09-2021PE24000.00","openInterest":0,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":0,"change":0,"pChange":0,"totalBuyQuantity":20575,"totalSellQuantity":0,"bidQty":5000,"bidprice":5,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"30-Dec-2021","PE":{"strikePrice":24000,"expiryDate":"30-Dec-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-12-2021PE24000.00","openInterest":11,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":180,"change":0,"pChange":0,"totalBuyQuantity":100,"totalSellQuantity":0,"bidQty":50,"bidprice":151.55,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"24-Jun-2021","CE":{"strikePrice":24000,"expiryDate":"24-Jun-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY24-06-2021CE24000.00","openInterest":1,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":9223.8,"change":0,"pChange":0,"totalBuyQuantity":3650,"totalSellQuantity":2900,"bidQty":750,"bidprice":11073.95,"askQty":500,"askPrice":11544.4,"underlyingValue":35141.45},"PE":

async function formatDataAndStore(resp){
    return new Promise((resolve,reject)=>{
    //let myDate = new Date();
    //let currentTime = myDate.getHours()*100 + Math.floor(myDate.getMinutes()/5)*5;

    (resp.records.data).forEach(element => {
        console.log(JSON.parse(element.PE));
    });

    })
}

> (node:12578) UnhandledPromiseRejectionWarning: SyntaxError: Unexpected
> token o in JSON at position 1
>     at JSON.parse (<anonymous>)
>     at /Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:79:26
>     at Array.forEach (<anonymous>)
>     at /Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:78:25
>     at new Promise (<anonymous>)
>     at formatDataAndStore (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:74:12)
>     at Query.<anonymous> (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:55:15)
>     at Query.<anonymous> (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/Connection.js:526:10)
>     at Query._callback (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/Connection.js:488:16)
>     at Query.Sequence.end (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/protocol/sequences/Sequence.js:83:24)
> (Use `node --trace-warnings ...` to show where the warning was
> created) (node:12578) UnhandledPromiseRejectionWarning: Unhandled
> promise rejection. This error originated either by throwing inside of
> an async function without a catch block, or by rejecting a promise
> which was not handled with .catch(). To terminate the node process on
> unhandled promise rejection, use the CLI flag
> `--unhandled-rejections=strict` (see
> https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode).
> (rejection id: 2) (node:12578) [DEP0018] DeprecationWarning: Unhandled
> promise rejections are deprecated. In the future, promise rejections
> that are not handled will terminate the Node.js process with a
> non-zero exit code.

我收到的错误：

{"records":{"expiryDates":["03-Jun-2021","10-Jun-2021","17-Jun-2021","24-Jun-2021","01-Jul-2021","08-Jul-2021","15-Jul-2021","22-Jul-2021","29-Jul-2021","26-Aug-2021","30-Sep-2021","30-Dec-2021"],"data":[{"strikePrice":18000,"expiryDate":"30-Sep-2021","PE":{"strikePrice":18000,"expiryDate":"30-Sep-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-09-2021PE18000.00","openInterest":1,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":0.25,"change":0,"pChange":0,"totalBuyQuantity":23100,"totalSellQuantity":0,"bidQty":10000,"bidprice":5,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":23000,"expiryDate":"24-Jun-2021","PE":{"strikePrice":23000,"expiryDate":"24-Jun-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY24-06-2021PE23000.00","openInterest":534,"changeinOpenInterest":-6,"pchangeinOpenInterest":-1.1111111111111112,"totalTradedVolume":82,"impliedVolatility":63.23,"lastPrice":9.5,"change":-2.5,"pChange":-20.833333333333336,"totalBuyQuantity":2775,"totalSellQuantity":875,"bidQty":50,"bidprice":9.5,"askQty":50,"askPrice":9.95,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"30-Sep-2021","PE":{"strikePrice":24000,"expiryDate":"30-Sep-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-09-2021PE24000.00","openInterest":0,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":0,"change":0,"pChange":0,"totalBuyQuantity":20575,"totalSellQuantity":0,"bidQty":5000,"bidprice":5,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"30-Dec-2021","PE":{"strikePrice":24000,"expiryDate":"30-Dec-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY30-12-2021PE24000.00","openInterest":11,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":180,"change":0,"pChange":0,"totalBuyQuantity":100,"totalSellQuantity":0,"bidQty":50,"bidprice":151.55,"askQty":0,"askPrice":0,"underlyingValue":35141.45}},{"strikePrice":24000,"expiryDate":"24-Jun-2021","CE":{"strikePrice":24000,"expiryDate":"24-Jun-2021","underlying":"BANKNIFTY","identifier":"OPTIDXBANKNIFTY24-06-2021CE24000.00","openInterest":1,"changeinOpenInterest":0,"pchangeinOpenInterest":0,"totalTradedVolume":0,"impliedVolatility":0,"lastPrice":9223.8,"change":0,"pChange":0,"totalBuyQuantity":3650,"totalSellQuantity":2900,"bidQty":750,"bidprice":11073.95,"askQty":500,"askPrice":11544.4,"underlyingValue":35141.45},"PE":

async function formatDataAndStore(resp){
    return new Promise((resolve,reject)=>{
    //let myDate = new Date();
    //let currentTime = myDate.getHours()*100 + Math.floor(myDate.getMinutes()/5)*5;

    (resp.records.data).forEach(element => {
        console.log(JSON.parse(element.PE));
    });

    })
}

> (node:12578) UnhandledPromiseRejectionWarning: SyntaxError: Unexpected
> token o in JSON at position 1
>     at JSON.parse (<anonymous>)
>     at /Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:79:26
>     at Array.forEach (<anonymous>)
>     at /Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:78:25
>     at new Promise (<anonymous>)
>     at formatDataAndStore (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:74:12)
>     at Query.<anonymous> (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:55:15)
>     at Query.<anonymous> (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/Connection.js:526:10)
>     at Query._callback (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/Connection.js:488:16)
>     at Query.Sequence.end (/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/protocol/sequences/Sequence.js:83:24)
> (Use `node --trace-warnings ...` to show where the warning was
> created) (node:12578) UnhandledPromiseRejectionWarning: Unhandled
> promise rejection. This error originated either by throwing inside of
> an async function without a catch block, or by rejecting a promise
> which was not handled with .catch(). To terminate the node process on
> unhandled promise rejection, use the CLI flag
> `--unhandled-rejections=strict` (see
> https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode).
> (rejection id: 2) (node:12578) [DEP0018] DeprecationWarning: Unhandled
> promise rejections are deprecated. In the future, promise rejections
> that are not handled will terminate the Node.js process with a
> non-zero exit code.

>（节点：12578）未处理的PromisejectionWarning:语法错误：意外
>位置1处JSON中的标记o
>在JSON.parse（）处
>在/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:79:26
>在Array.forEach（）处
>在/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:78:25
>在新的承诺（）
>在formatDataAndStore（/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:74:12）
>在询问时。（/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/server.js:55:15）
>在询问时。（/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/Connection.js:526:10）
>在Query.\u回调（/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node\u modules/mysql/lib/Connection.js:488:16）
>在Query.Sequence.end（/Users/manjulamkumar/Desktop/myRepo/DEV/OptionChain/node_modules/mysql/lib/protocol/sequences/Sequence.js:83:24）
>（使用`node--trace warnings…`显示警告的位置。）
>已创建）（节点：12578）未处理PromisejectionWarning:未处理
>承诺拒绝。此错误源于
>没有catch块或拒绝承诺的异步函数
>这不是用.catch（）处理的。要终止上的节点进程，请执行以下操作：
>未处理的承诺拒绝，请使用CLI标志
>`--未处理的拒绝=严格`（请参阅
> https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode).
>（拒绝id:2）（节点：12578）[DEP0018]拒绝警告：未处理
>拒绝承诺是不推荐的。在未来，承诺拒绝
>未处理的将使用
>非零退出代码。

它已经被解析了，如果没有，你怎么做resp.records.data？因此，我建议你做一些类似的事情

resp.records.data.map(e => console.log(JSON.stringify(e.PE)))

或

---

如果从日志行中删除

JSON.parse

，会记录什么？它已经是json了吗？但是当我记录element.strikePrice时，仍然会得到相同的错误，它可以工作，但无法在PE内部读取。