背景
url参数只能携带字符串和数组
对于对象数组则无能为力
通常情况下我们可以把对象数组json编码后放入url中
但是这样做以后url的可读性会变差,长度往往会非常的长
在这里提供一种编码方式,解决以上问题
实现
代码
export default {
/**
* 解码
*/
queryDecode(data) {
for (const key in data) {
let arr = key.split('.')
if (arr.length > 1) {
let _data = data
for (let i = 0; i < arr.length; i++) {
if (_data[arr[i]] === undefined) {
if ((i + 1) === arr.length) {
_data[arr[i]] = data[key]
} else if (isNaN(arr[i + 1])) {
_data[arr[i]] = {}
} else {
_data[arr[i]] = []
}
}
_data = _data[arr[i]]
}
delete data[key]
}
}
return data
},
/**
* 编码
*/
queryEncode(data) {
data = Object.assign({}, data)
return this._queryEncode(data);
},
_queryEncode(data, keyFix = '') {
let res = {}
for (const key in data) {
if (typeof data[key] === 'object') {
res = Object.assign(res, this._queryEncode(data[key], keyFix ? (keyFix + '.' + key) : key))
} else {
res[keyFix ? (keyFix + '.' + key) : key] = data[key]
}
if (keyFix === '') {
delete data[key]
}
}
return res
}
}
示例
let article = {
title: "Hello",
id: 123,
user: {
id: 1001,
name: 'user1'
},
tags: [{
id: 1,
name: "tag1"
}, {
id: 2,
name: "tag2",
year: "2018"
}]
}
console.log('编码后', QueryCode.queryEncode(article))
console.log('querystring.stringify', querystring.stringify(QueryCode.queryEncode(article)))
console.log('对比json', querystring.stringify({ json: JSON.stringify(article) }))
编码后
{
"title": "Hello",
"id": 123,
"user.id": 1001,
"user.name": "user1",
"tags.0.id": 1,
"tags.0.name": "tag1",
"tags.1.id": 2,
"tags.1.name": "tag2",
"tags.1.year": "2018"
}
querystring.stringify
title=Hello&id=123&user.id=1001&user.name=user1&tags.0.id=1&tags.0.name=tag1&tags.1.id=2&tags.1.name=tag2&tags.1.year=2018
对比json
json=%7B%22title%22%3A%22Hello%22%2C%22id%22%3A123%2C%22user%22%3A%7B%22id%22%3A1001%2C%22name%22%3A%22user1%22%7D%2C%22tags%22%3A%5B%7B%22id%22%3A1%2C%22name%22%3A%22tag1%22%7D%2C%7B%22id%22%3A2%2C%22name%22%3A%22tag2%22%2C%22year%22%3A%222018%22%7D%5D%7D