问题描述
因此，我设法从URL获得了我想要的一切。现在，我想将该对象写入“ verified.json”文件中。问题在于，只有我对象中的最后一项被写入那里，而另一项却被写入，表明它显然在某个地方坏了。
我是这个菜鸟，所以对解决方案的解释将不胜感激。
const axios = require("axios");
const cheerio = require("cheerio");
const fs = require('fs');
const colors = require("colors");
prodArray = {};
axios.get("https://arstechnica.com/gadgets/").then(urlResponse => {
const $ = cheerio.load(urlResponse.data);
$('li.article').each((i,elem) => {
const link = $(elem).find("a.overlay").attr("href");
//console.log(link.cyan);
const header = $(elem).find("h2").text();
//console.log(header);
const author = $(elem).find("p.byline").find("a").text();
//console.log(author);
console.log("---------------\n".red);
data = {
"Link: ": link,"Title: ": header,"Author: ": author
}
let dataStringfy = JSON.stringify(data);
let test = fs.writeFile("verified.json",dataStringfy,function (err) {
if (err) {
console.log(err)
} else {
console.log("Success")
}
})
console.log(test);
})
})
解决方法
您可以在写入文件之前先插入数组
var datas = [];
$('li.article').each((i,elem) => {
const link = $(elem).find("a.overlay").attr("href");
//console.log(link.cyan);
const header = $(elem).find("h2").text();
//console.log(header);
const author = $(elem).find("p.byline").find("a").text();
//console.log(author);
console.log("---------------\n".red);
data = {
"Link: ": link,"Title: ": header,"Author: ": author
}
datas.push(data);
});
let dataStringfy = JSON.stringify(datas);
let test = fs.writeFile("verified.json",dataStringfy,function (err) {
if (err) {
console.log(err)
} else {
console.log("Success")
}
})
我认为这样效果更好
const arr = []
$('li.article').each((i,elem) => {
const link = $(elem).find("a.overlay").attr("href");
const header = $(elem).find("h2").text();
const author = $(elem).find("p.byline").find("a").text();
arr.push({
"Link": link,"Title": header,"Author": author
})
})
let dataStringfy = JSON.stringify(arr);
console.log(dataStringfy)
const $doc = $($("xmp").text());
const arr = []
$('li.article',$doc).each((i,"Author": author
})
})
let dataStringfy = JSON.stringify(arr);
console.log(dataStringfy)<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
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