将数组作为查询字符串参数节点传递.js

Question

如何将数组作为查询字符串参数传递？

我已经尝试了许多方法，包括将其添加到路径中，但我无法在后端拉动数组。

如果我对数组进行硬编码，它可以正常工作，但是当我尝试将数组从前端传递到后端时，它无法正常工作。

谁能指出我正确的方向？

前端

function loadJob() {
return API.get("realtorPilot", "/myTable/ListJobs", {
'queryStringParameters': {
radius,
availableServices,
}
});

后端

import * as dynamoDbLib from "./libs/dynamodb-lib";
import { success, failure } from "./libs/response-lib";
export async function main(event, context) {
const data = {
radius: event.queryStringParameters.radius,
availableServices: event.queryStringParameters.availableServices,
};
// These hold ExpressionAttributeValues
const zipcodes = {};
const services = {};
data.radius.forEach((zipcode, i) => {
zipcodes[`:zipcode${i}`] = zipcode;
});
data.availableServices.forEach((service, i) => {
services[`:services${i}`] = service;
});
// These hold FilterExpression attribute aliases
const zipcodex = Object.keys(zipcodes).toString();
const servicex = Object.keys(services).toString();
const params = {
TableName: "myTable",
IndexName: "zipCode-packageSelected-index",
FilterExpression: `zipCode IN (${zipcodex}) AND packageSelected IN (${servicex})`,
ExpressionAttributeValues : {...zipcodes, ...services},
};
try {
const result = await dynamoDbLib.call("scan", params);
// Return the matching list of items in response body
return success(result.Items);
} catch (e) {
return failure(e.message);
}
}

Answer 1

传递一个逗号分隔的字符串并将其拆分到后端。

示例：https://example.com/apis/sample?radius=a,b,c,d&availableServices=x,y,z

在 api 定义中，将字段拆分为逗号。

const data = {
radius: event.queryStringParameters.radius.split(','),
availableServices: event.queryStringParameters.availableServices.split(',')
};