在鸿蒙ArkTS中如何实现json字符串转get请求字符串？

Question

在鸿蒙ArkTS中如何实现json字符串转get请求字符串？问题描述：
{“Method”:“2”,“count”:1,“amount”:“100”}
转成：
Method=2&count=1&amount=100

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Answer 1

你可以参考代码：

index.ets 
@Entry 
@Component 
struct Index { 
  @State message: string = ‘Hello World’; 
  aboutToAppear(): void { 
  // JSON 字符串 
  let jsonRecord:Record<string,object> = JSON.parse(’{“method”:“2”,“amountBig”:“壹元整”,“batchTransferType”:“1”,“list”:[{“payeeAccount”:“6221881600028631957”,“payeeName”:“张三”,“amount”:“100”,“payType”:0,“recDepType”:1}],“payerName”:“有限公司”,“title”:“张三的批量转账”,“payerAccount”:“30000029029200003862965”,“uaIdList”:[4307852314389],“flowId”:“178796”}’) as Record<string,object>; 
// 构建 GET 请求的参数字符串 
let queryString: string = ‘’; 
queryString = this.objectToGetString(jsonRecord); 
console.log(queryString); 
} 
objectToGetString(obj: object): string { 
try { 
let queryString: string = ‘’; 
Object.keys(obj).forEach(key => { 
if(typeof obj[key] === ‘object’ && obj !== null){ 
if(Array.isArray(obj[key])){ 
const array = obj[key] as []; 
const newArray:string[] = []; 
array.forEach((item,index)=>{ 
let getString:string = ‘’; 
if(typeof item === ‘object’ && obj !== null) { 
if(this.isJsonString(JSON.stringify(item))){ 
getString = this.objectToGetString(item); 
}else { 
getString = item; 
} 
}else { 
getString = item; 
} 
newArray.push(getString); 
}) 
let strNewArray = “[” + newArray.join(",") + “]”; 
obj[key] = strNewArray; 
} 
} 
queryString += ${key}=${obj[key]}&; 
}); 
// 去除末尾的 ‘&’ 
queryString = queryString.slice(0, -1); 
return queryString; 
} catch (error) { 
console.error(“Error converting object to JSON string:”, error); 
return ‘’; 
} 
} 
isJsonString(value:string):boolean{ 
try { 
JSON.parse(value); 
return true; 
} catch (error) { 
return false; 
} 
} 
build() { 
Row() { 
Column() { 
Text(this.message) 
.fontSize(50) 
.fontWeight(FontWeight.Bold) 
} 
.width(‘100%’) 
} 
.height(‘100%’) 
} 
}

本文参与了 【 HarmonyOS NEXT 技术问答冲榜，等你来战！】欢迎正在阅读的你也加入。