nodejs如何动态读取文件夹下图片，并放入json数据中并显示

function read_directory(path, next) {
fs.readdir("./public/images/", function (err, files) {
var count = files.length,
results = {};
files.forEach(function (filename) {
fs.readFile(filename, function (data) {
results[filename] = "./public/images/"+filename;
count--;
if (count <= 0) {
next( results );
}
});
});
});
}

function read_directories(name, next) {
var count = name.length,
data = {};
name.forEach(function (path) {
read_directory(path, function (results) {
data[path] = results;
count--;
if (count <= 0) {
next(data);
}
});
});
}

read_directories(['name','name2','name3'] ,function (data) {//其中name=name2=name3
var fileName=data.name;
var fileNum = 0;
for(var key in fileName)
{
if(fileName.hasOwnProperty(key)){
fileNum++;}
}
//    console.log(fileNum);
//    console.log(fileName);
for(var i in fileName){
console.log("the image name is:{"+ i +"} and the path is:{"+fileName[i]+"}");
}
});

fs.readdir("./public/images/", function (err, files) {//读取文件夹下文件
var count = files.length,
results =new Array() ;
files.forEach(function (filename) {
fs.readFile(filename, function (data) {
var tmpResult={};
tmpResult["imageName"]=filename;
tmpResult["imagePath"] = "./public/images/"+filename;
results[count-1]=tmpResult ;
count--;
if (count <= 0) {
console.log(results);
console.log(results[1].imageName);
}
});
});
});