在 Typescript 中解析 JSON 数组
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Parse JSON array in Typescript
提问by Jendorski Labs
i have a JSON response from remote server in this way:
我以这种方式从远程服务器收到 JSON 响应：
{
"string": [
{
"id": 223,
"name": "String",
"sug": "string",
"description": "string",
"jId": 530,
"pcs": [{
"id": 24723,
"name": "String",
"sug": "string"
}]
}, {
"id": 247944,
"name": "String",
"sug": "string",
"description": "string",
"jlId": 531,
"pcs": [{
"id": 24744,
"name": "String",
"sug": "string"
}]
}
]
}
In order to parse the response, to list out the "name" & "description", i have written this code out:
为了解析响应，列出“名称”和“描述”，我写了这个代码：
interface MyObj {
name: string
desc: string
}
let obj: MyObj = JSON.parse(data.toString());
My question is how do i obtain the name and description into a list that can be displayed.
我的问题是如何将名称和描述获取到可以显示的列表中。
回答by Yaroslav Admin
You gave incorrect type to your parsed data. Should be something like this:
您为解析的数据提供了错误的类型。应该是这样的：
interface MyObj {
name: string
description: string
}
let obj: { string: MyObj[] } = JSON.parse(data.toString());
So it's not MyObj, it's object with property stringcontaining array of MyObj. Than you can access this data like this:
所以它不是MyObj，它是具有string包含数组的属性的对象MyObj。你可以像这样访问这些数据：
console.log(obj.string[0].name, obj.string[0].description);
Instead of using anonymous type, you can also define interfacefor it:
除了使用匿名类型，您还可以interface为其定义：
interface MyRootObj {
string: MyObj[];
}
let obj: MyRootObj = JSON.parse(data.toString());
