nodejs读写json文件的简单方法(必看)

nodejs 读json文件

var fs=reauire('fs');
var file="d:\\0.json";
var result=JSON.parse(fs.readFileSync( file));
//操作对象

nodejs 写json文件

var coors = {};
 coors.left_top = {};
 coors.right_top = {};
 coors.left_bottom = {};
 coors.right_bottom = {};
//填充coors中内容
var filename = "d:\\coors\\0.json";
 fs.writeFileSync(filename, JSON.stringify(coors));
 //对象嵌套
 var fs = require('fs');
var fileDirectory = "D:\\column";
var newfileDirectory = "d:\\new";
if (fs.existsSync(fileDirectory)) {
 var files = fs.readdirSync(fileDirectory);

 for (var i = 0; i < files.length; i++) {

 var filePath = fileDirectory + "/" + files[i];
 var newfilepath = newfileDirectory + "/" + files[i]
 var filestr = JSON.parse(fs.readFileSync(filePath));
 for (var item in filestr) {
 var inter=filestr[item];
 for(var m in inter)
 {
 inter[m]=parseFloat(inter[m]);

 }
 fs.writeFileSync(newfilepath, JSON.stringify(filestr));
 }

 }
} else {
 console.log(fileDirectory + " Not Found!");
}

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