我使用React和Rails。我做了:

js

  let params = {
    filter_array: ['A', 'B', 'C']
  }

  ...

  //transform params in URI

  Object.keys(params).map(key => {
    if (Array.isArray(params[key])) {
      return params[key].map((value) => `${key}[]=${value}`).join('&')
    }
  }
  //filter_array[]=A&filter_array[]=B&filter_array[]=C

我不认为有一个标准。 每个网络环境都为这些事情提供了自己的“标准”。此外，url通常太短(在某些浏览器上限制为256字节)。当然，更长的数组/数据可以通过POST请求发送。

但是，有一些方法:

There's a PHP way, which uses square brackets ([,]) in URL queries. For example a query such as ?array_name[]=item&array_name[]=item_2 has been said to work, despite being poorly documented, with PHP automatically converting it into an array. Source: https://stackoverflow.com/a/9547490/3787376 Object data-interchange formats (e.g. JSON - official website, PHP documentation) can also be used if they have methods of converting variables to and from strings as JSON does. Also an url-encoder (available for most programming languages) is required for HTTP get requests to encode the string data correctly.

尽管“方括号方法”简单且有效，但它仅限于PHP和数组。 如果需要其他类型的变量，如类或在非PHP语言的查询字符串中传递变量，则建议使用JSON方法。

PHP中的JSON方法示例(方法2):

$myarray = array(2, 46, 34, "dfg");
$serialized = json_encode($myarray)
$data = 'myarray=' . rawurlencode($serialized);
// Send to page via cURL, header() or other service.

接收页面代码(PHP):

$myarray = json_decode($_GET["myarray"]); // Or $_POST["myarray"] if a post request.

你在问题中提到了PHP和Javascript，但没有在标签中提到。我提出这个问题的目的是将一个数组传递给MVC。网行动。

我在这里找到了问题的答案:预期的格式是您在问题中提出的格式，多个参数具有相同的名称。

你可以使用这些函数，但要确保不要在对象键上使用“-”。

// convert obj to url params function objToUrlParams(obj) { let toUrlParams = (obj, prefex = '') => { // create url params let urlParams = ""; // loop through obj for (let key in obj) { let val = obj[key]; if (val == null) continue; if (val == undefined) continue; // if(val == '') continue; // if val is an object then call toUrlParams if (val instanceof Array) { // convert val from Array to object let valToObj = {}; val.forEach((v, i) => { valToObj[i] = v; }); val = valToObj; } let newPrefex = prefex + key; if (val instanceof Object) { urlParams += toUrlParams(val, newPrefex + '-'); } else { urlParams += newPrefex + '=' + val; } urlParams += '&'; } // remove last & urlParams = urlParams.slice(0, -1); // return url params return urlParams; } // encodeURI return encodeURI(toUrlParams(obj)); } // convert url params to obj function urlParamsToObj(urlParams) { // decodeURI urlParams = decodeURI(urlParams); let toObj = (urlParams) => { let obj = {}; let urlParamsArr = urlParams.split('&'); let subUrlParramsObj = {}; // loop through urlParams for (let i = 0; i < urlParamsArr.length; i++) { let item = urlParamsArr[i]; // get key and value let key = item.split('=')[0]; let val = item.split('=')[1] ?? null; let keys = key.split('-'); if (val == "null") { val = null; } else if (val == "undefined") { val = undefined; } else if (val == "true") { val = true; } else if (val == "false") { val = false; } else if (val == "NaN") { val = NaN; } else if (val == "Infinity") { val = Infinity; } // if keys length is 1 then set obj[key] to val if (keys.length == 1) { // check if obj contains key if (obj.hasOwnProperty(key)) { // if obj[key] is an array then push val if (obj[key] instanceof Array) { obj[key].push(val); } else { // create array and push val obj[key] = [obj[key], val]; } } else { obj[key] = val; } } // if keys length is 2 then set obj[keys[0]][keys[1]] to val else if (keys.length > 1) { let key0 = keys[0]; // check if subUrlParramsObj contains keys[0] if (!subUrlParramsObj[key0]) { subUrlParramsObj[key0] = []; } // remove keys[0] from keys keys.shift(); // join keys with - key = keys.join('-'); let param = key + '=' + val; // add param to subUrlParramsObj[keys[0]] subUrlParramsObj[key0].push(param); } } // loop through subUrlParramsObj for (let key in subUrlParramsObj) { // join subUrlParramsObj[key] with & let val = subUrlParramsObj[key].join('&'); // set obj[key] to val obj[key] = toObj(val); } // return obj return obj; } return checkIfObjShouldBeArrayAndConvert(toObj(urlParams)); } // check if object should be converted to array, if its keys are numbers function checkIfObjShouldBeArrayAndConvert(obj) { // if obj is an array if (obj instanceof Array) { // loop through obj obj.forEach((item, i) => { // check if item is an object if (item instanceof Object) { // convert item to array obj[i] = checkIfObjShouldBeArrayAndConvert(item); } }); // return obj return obj; } // check if all keys are numbers let canConvertToArray = true; for (let key in obj) { // get value let val = obj[key]; // check if value is an object or Array if (val instanceof Object || val instanceof Array) { obj[key] = checkIfObjShouldBeArrayAndConvert(val); } if (isNaN(key)) { canConvertToArray = false; } } // order obj by keys let orderedObj = {}; Object.keys(obj).sort().forEach(function(key) { orderedObj[key] = obj[key]; }); // check if the first key is 0 if (Object.keys(orderedObj)[0] != 0) { canConvertToArray = false; } // check if the keys step is 1 let keys = Object.keys(orderedObj); // loop through keys for (let i = 0; i < keys.length - 1; i++) { // get key let key = keys[i]; // get next key let nextKey = keys[i + 1]; // get key step let keyStep = nextKey - key; // check if key step is 1 if (keyStep != 1) { canConvertToArray = false; break; } } // if all keys are numbers then convert obj to array if (canConvertToArray) { let arr = []; for (let key in orderedObj) { arr.push(orderedObj[key]); } return arr; } // return obj return obj; } // add params to url function addParamsToUrl(params, url = window.location.href) { // check if url has params if (url.indexOf('?') == -1) { url += '?'; } else { url += '&'; } return url + params ?? ''; } function addObjToUrl(obj, url = window.location.href) { return addParamsToUrl(objToUrlParams(obj), url); } // extract params from url function extractParamsFromUrl(url = window.location.href) { return urlParamsToObj(url.split('?')[1]); } // test let urlParams = objToUrlParams({ a: 1, b: "zad", c: { d: 2, e: "f" }, j: [1, 2, 3, 4] }); console.log(urlParams); // a=1&b=zad&c-d=2&c-e=f&j=1&j=2&j=3&j=4 let obj = urlParamsToObj(urlParams); console.log(obj); // { "a": "1", "b": "zad", "j": [ "1", "2", "3", "4" ], "c": { "d": "2", "e": "f" } }

虽然URL部分没有标准，但JavaScript或多或少有一个标准。

数组。方法返回以逗号分隔的项目字符串。

因此，如果你将包含数组的对象传递给URLSearchParams，并对其调用toString()，它将反过来对每个值调用toString，结果如下所示:

let data = {
  name: 'abc',
  values: ['abc', 123]
}

new URLSearchParams(data).toString();
// ?name=abc&values=abc,123 (with escaped comma characters)

这种格式很容易在前端序列化，也很容易在任何服务器上解析，而且无论上下文如何都很容易理解，所以它往往是我在url中发送数组数据的首选。

查询字符串携带文本数据，所以没有选择，只能分解数组，正确编码，并以您选择的表示格式传递:

p1 = value1&pN =家…… data = (value1,…,家) data = {p1: value1,…,pN:家}

然后在服务器端代码中解码。