Javascript 中用双引号嵌套替换字符串

Question

在逻辑应用程序中，我有这个函数可以将某些字符串的双引号替换为零。我如何在 Javascript 中复制它？

replace(replace(replace(replace(replace(body('HTTP_2'),'"PR_RENT":""','"PR_RENT":0'),'"PR_ID":""','"PR_ID":0'),'"PR_USUM":""','"PR_USUM":0'),'"PR_LEAS":""','"PR_LEAS":0'),'"PR_USER8":""','"PR_USER8":0')

我试过这段代码。

```
var json = workflowContext.actions.HTTP_2.outputs.body
if (json.PR_RENT=="\"\"")
{
json.PR_RENT=0
}
if (json.PR_ID=="\"\"")
{
json.PR_ID=0
}
if (json.PR_USUM=="\"\"")
{
json.PR_USUM=0
}
if (json.PR_LEAS=="\"\"")
{
json.PR_LEAS=0
}
if (json.PR_USER8=="\"\"")
{
json.PR_USER8=0
}
return json;
```

所有受影响的字段都收到类似这样的错误消息。

```[
 {
 "message": "Invalid type. Expected Integer but got String.",
 "lineNumber": 0,
 "linePosition": 0,
 "path": "Payload[0].PR_USER8",
 "value": "",
 "schemaId": "#/properties/Payload/items/properties/PR_USER8",
 "errorType": "type",
 "childErrors": []
 },
 ,
 {
 "message": "Invalid type. Expected Integer but got String.",
 "lineNumber": 0,
 "linePosition": 0,
 "path": "Payload[2].PR_RENT",
 "value": "",
 "schemaId": "#/properties/Payload/items/properties/PR_RENT",
 "errorType": "type",
 "childErrors": []
  }
]


Here is some of my JSON code

```{"Payload":[{"RLS_GROUP":"","PR_SNAM":"700063","PR_OWN":"qqq","PR_REF":"","PR_NAME":"Bqqq12","PR_ADD1":"qqq","PR_ADD2":"INDUSTRIAL ESTATE","PR_ADD3":"23  INDUSTRIAL ESTATE","PR_ADD4":"yyy","PR_ADD5":"","PR_ADD6":"GB","PR_POST":"WQDQWD","PR_TEL":"23213","PR_TELX":"21312312","PR_FAX":"","PR_CONT":"","PR_NUNIT":"","PR_INT":"","PR_TENR":"LEASED","PR_QDAY":"","PR_CLSS":"","PR_DRCT":"Closing","PR_AGENT":"","PR_NOWN":"","PR_BOWN":"","PR_SOL":"","PR_HSTT":"","PR_HEND":"","PR_HAMT":"","PR_PFREQ":"","PR_NTENT":"","PR_NFLR":"","PR_GRA":"","PR_WATER":"","PR_RATVAL":"","PR_RTCT":"","PR_SCHG":"","PR_OCHG":"","PR_GFA":"","PR_ZONEA":"","PR_ZONEB":"","PR_ZONEC":"","PR_UPDATE":"","PR_UTIME":"","PR_UUSER":"","PR_HIST":"","PR_TAXYN":"","PR_TAX":"","PR_START":"","PR_END":"","PR_FREQ":"","PR_QTR":"","PR_NDUE":"","PR_TAXRUN":"","PR_OUTLET":"","PR_INLET":"","PR_VAL":"","PR_CST":"","PR_FRWA":"","PR_FRWB":"","PR_PRINT":"","PR_NL":"","PR_CURRS":"","PR_NEXTS":"","PR_VAT":"D","PR_USER":"","PR_VQDAY":"","PR_OBS1":"STANDARD NORTH","PR_TYPE":"Property","PR_VATDATE":"","PR_FUTHER":"","PR_RESTEN":"","PR_CAPGOODS":"","PR_INSEE":"","PR_CURR":"","PR_AQDATE":"20190917","PR_USER1":"Office","PR_USER2":"Yes","PR_USER3":"","PR_USER4":"","PR_USER5":"20190917","PR_USER6":"","PR_USER7":"","PR_USER8":0,"PR_USER9":"","PR_USER10":"","PR_OBS2":"","PR_OBS3":"","PR_OBS4":"","PR_OBS5":"","PR_OBS6":"","PR_OBS7":"UK","PR_OBS8":"","PR_OBS9":"","PR_SOLD":"0","PR_DATESOLD":"20200917","PR_LAND":"","PR_LANDUM":"","PR_FREE":"","PR_ID":0,"PR_BTYP":"F","PR_LEAS":0,"PR_RENT":999999,"PR_USUM":0,"PR_FBUI":0,"PR_DREN":"","PR_USRC":"","PR_RSRC":"","PR_LSRC":"","PR_ELSR":"","PR_EGRS":"","PR_PROR":"","PR_BSTA":"","PR_LNAM":"123123213","PR_SITE":"","PR_REGION":"","PR_DESC":""}]}

我必须这样做，因为 API 在没有值时为整数字段返回“”而不是零。

我试过这个代码

var json = workflowContext.actions.HTTP_2.outputs.body;
json.Payload[0].RLS_GROUP='Test';
json.Payload[0].PR_REF=123;
return json;

收到这条消息

InlineCodeScriptRuntimeFailure. The inline code action 'JavaScriptCode' 
execution failed, with error 'Cannot read property '0' of undefined'.

此外，我的 Javascript 操作屏幕看起来与您的有点不同。

我试过这段代码。它似乎适用于第一个示例，但并非所有示例。可能数据在双引号前包含 space。如何遍历所有有效负载元素？

var jsonString = workflowContext.actions.HTTP_2.outputs.body;
const json =JSON.parse(jsonString);
const dic = json['Payload'][0];
const checkFields = ['PR_RENT','PR_ID','PR_USUM','PR_LEAS','PR_USER8'];
checkFields.forEach(field=>{
    console.log(dic[field]); 
    if(dic[field]=='""')
    {
        dic[field]=0;
        console.log(field);
    }
}
);
return json;

Answer 1

如果要使用JavaScript来管理json，直接设置值即可。您可以参考我的操作，如下图所示。表达式就像 json.key=value;

Update: 我用数组json测试它可以工作，你需要指向索引。如果不是，请提供更多信息。

Answer 2

这会将 json 视为字符串而不是数组。

json=json.replace(/"PR_USER8":""/g,'"PR_USER8":0').replace(/"PR_RENT":""/g,'"PR_RENT":0').replace(/"PR_ID":""/g,'"PR_ID":0').replace(/"PR_USUM":""/g,'"PR_USUM":0').replace(/"PR_LEAS":""/g,'"PR_LEAS":0');
return json;```

I think this is better as it treats the json as an object not a string.

    ```
    var jsonString = workflowContext.actions.HTTP_2.outputs.body;
const json =JSON.parse(jsonString);
const ret =[];

const dic = json['Payload'];
const checkFields = ['PR_RENT','PR_ID','PR_USUM','PR_LEAS','PR_USER8'];
for(i in json['Payload'])
{


checkFields.forEach(field=>{
     if(json.Payload[i][field]=="")
    {
        json.Payload[i][field]=0;
       // console.log(field);
    }
}

);
}

return json;
    ```

Javascript 中用双引号嵌套替换字符串

Nested replace of strings with double quotes in Javascript

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