博客

1.直接读取

//引入
var fs = require('fs')；

var path = 'text.json';
fs.readFile(path, function (error, data) {
        if (error) {
            console.log('读取文件失败了'+error)
        } else {
            data = JSON.parse(data.toString());
        }
    })

2.按行读取

//引入
var fs = require('fs');
var readline = require('readline');

//调用方法
var path = 'text.json';
 read_file(path,function (data) {
        console.log(data);
    });
    
//定义读取方法
function read_file(path,callback){
    var fRead = fs.createReadStream(path);
    var objReadline = readline.createInterface({
        input:fRead
    });
    var arr = new Array();
    objReadline.on('line',function (line) {
        console.log(line)
        arr.push(JSON.parse(line));
    });
    objReadline.on('close',function () {
        callback(arr);
    });
}