nodeJs——文件写入读取接口

目录结构：
javascript 代码

node/
|
+- controllers/ <-- Controller
|  |
|  +- jsonFile.js <-- 文件读写   
|
+- router <-- 路由文件
|  |
|  +- router.js <-- 路由配置
|
+- data <-- 文件存储目录  
|
+- server.js <-- 入口文件
|
+- package.json <-- 项目描述文件
|
+- processes.json <-- pm2配置文件 
|
+- run.bat <-- 启动脚本 
|
+- stop.bat <--停止脚本  
|
+- node_modules/ <-- npm安装的所有依赖包

jsonFile.js:
javascript 代码

/**
 * Created by fangdandan on 2017/11/07.
 * 本地文件存储
 */
 var fs = require("fs");
module.exports = {
    writeFile: function (req, res) {
        let param = req.body;
        console.log("准备写入文件");
        fs.writeFile('data/'+param.id+'.txt', param.content,  function(err) {
            if (err) {
                res.json({
                    "result": false,
                    "errorMsg": "保存失败",
                    "errorDetail": err.toString()
                });
            }else{
                res.json({
                    "result": true,
                    "errorMsg": "保存成功"
                });
                console.log("数据写入成功！");
            }
            
        });
    },
    readFile: function (req, res) {
        let param = req.body;
        fs.readFile('data/'+param.id+'.txt', function (err, data) {
            if (err) {
                res.json({
                    "result": false,
                    "errorMsg": "数据读取失败",
                    "errorDetail": err.toString()
                });
            }else{
                console.log("异步读取文件数据: " + data.toString());
                res.json({
                    "result": true,
                    "errorMsg": "数据读取成功",
                    "data": data.toString()
                });
            }
        });
    }
}

router.js:
javascript 代码

const express = require('express');
const router = express.Router();

const jsonFile = require('../controllers/jsonFile');

// jsonFile
router.post('/Write_File_Data',jsonFile.writeFile);
router.post('/Read_File_Data',jsonFile.readFile);


module.exports = router;

server.js:
javascript 代码

var express = require('express');
var bodyParser = require('body-parser'); //用于处理 JSON, Raw, Text 和 URL 编码的数据
var app = express();
var router = require('./router/router');

//设置跨域访问
app.all('*', function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "X-Requested-With");
    res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
    res.header("X-Powered-By",' 3.2.1');
    res.header("Content-Type", "application/json;charset=utf-8");
    next();
});

app.use(bodyParser.json()); //解析json数据
app.use(bodyParser.urlencoded({ extended: true })); //解析form表单提交上来的数据
app.use('/', router);

var server = app.listen(8888, function() {

	var host = server.address().address;
	var port = server.address().port;

	console.log("http://%s:%s", host, port);
});

package.json:
json 代码

{
  "name": "Demo",
  "version": "1.0.0",
  "description": "",
  "main": "server.js",
  "scripts": {
    "pm2": "pm2 start processes.json"
  },
  "author": "fangdandan",
  "license": "ISC",
  "dependencies": {}
}

processes.json:
json 代码

{
  "apps" : [{
    "name" : "Demo",  //名称
    "script": "./server.js", //程序入库
    "cwd": "./",           //根目录
    "watch":[
      "controllers",
      "router"
    ],//需要监控的目录
    "error_file":"./logs/app-err.log",//错误输出日志
    "out_file":"./logs/app-out.log",  //日志
    "log_date_format":"YYYY-MM-DD HH:mm Z" //日期格式
  }]
}

run.bat:
json 代码

npm run pm2

stop.bat:
json 代码

pm2 delete -s Demo

注意：
1、安装node；
2、npm install pm2 -g
3、npm install express
4、npm install fs
5、windows服务器，直接双击run.bat启动项目

调用接口：
javascript 代码

function readFile() {
    var param = {};
    param.id = 13;
    $.ajax({
        url: "http://localhost:8888/Read_File_Data",
        type: "POST",
        data: param,
        success: function (data) {
            if(data.result){
                var content = JSON.parse(data.data);
                console.log(content);
            }
        }
    });
}

function writeFile() {
    var param = {};
    param.id = 13;
    param.content = '';
    var obj = [
        {
            "id": "1",
            "name": "模式一",
            "data": [
                {
                    "type": "1",
                    "data": [
                        {
                            "num": 0,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 1,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 2,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 3,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 4,
                            "isChecked": true,
                            "bet": 55
                        }
                    ]
                },{
                    "type": "2",
                    "data": [
                        {
                            "num": 0,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 1,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 2,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 3,
                            "isChecked": true,
                            "bet": 55
                        },{
                            "num": 4,
                            "isChecked": true,
                            "bet": 55
                        }
                    ]
                }
            ]
        }
    ];
    param.content = JSON.stringify(obj);
    $.ajax({
        url: "http://localhost:8888/Write_File_Data",
        type: "POST",
        data: param,
        success: function (data) {
            console.log(data.errorMsg);
        }
    });
}

//获取地址参数值
function getParameter(param) {
    var reg = new RegExp("(^|&)" + param + "=([^&]*)(&|$)");
    var r = window.location.search.substr(1).match(reg);
    if (r != null)
        return decodeURI(r[2]); //可对 encodeURI() 函数编码过的 URI 进行解码
    return "";
}