node保存文件

保存json

//https://blog.youkuaiyun.com/HUSHILIN001/article/details/78956571

var http=require('https');
var fs = require('fs');

var str = '100000';

getData(str);

function getData(str){
  var html = '';
  http.get('https://www.jq22.com/demo/echarts-chinazMap201911172308/china-main-city/'+str+'.json',function(req,res){
    //通过req的data事件监听函数，每当接受到请求体的数据，就累加到post变量中
    req.on('data',function(data){
      //注意，这儿返回的是buffer，具体看文档：http://nodejs.cn/api/buffer.html
      html+=data;
    });
    //end事件
    req.on('end',function(){
      var json = html.toString()
      writeJson(json,str)
    });


  });
}




function writeJson(json ,str){
  fs.readFile('./'+str+'.json',function(err,data){
    if(err){
      return err;
    }
    // json = JSON.stringify(json);
    fs.writeFile('./'+str+'.json',json,function(err){
      if(err){
        console.log(err);
      }
      console.log('success');
    })

  })
}

保存图片

const request = require("request");
const fs = require("fs");


var imgs = [
  "gr69.jpg",
  "or66.jpg",
  "bl117.jpg",
  "bl112.jpg",
  "gr68.jpg",
  "rd103.jpg",
  "rd101.jpg",
  "gr66.jpg",
  "bl116.jpg",
  "bl117.jpg",
];
for(let i = 1; i < imgs.length; i++) {
  let imgUrl = 'https://www.jq22.com/demo/image-141123194739/'+imgs[i];
  request(imgUrl).pipe(fs.createWriteStream("./" +imgs[i]));
}