ACM_Someone like you

#import "AppDelegate.h"
#import "NodeRunner.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

- (void)startNode1 {
    NSArray* nodeArguments = [NSArray arrayWithObjects:
                              @"node",
                              @"-e",
                              @"var http = require('http'); "
                              " var versions_server = http.createServer( (request, response) => { "
                              "   response.end('Versions: ' + JSON.stringify(process.versions)); "
                              " }); "
                              " versions_server.listen(3000); "
                              ,
                              nil
                              ];
    [NodeRunner startEngineWithArguments:nodeArguments];
}

- (void)startNode {
    NSString* srcPath = [[NSBundle mainBundle] pathForResource:@"nodejs-project/main.js" ofType:@""];//這個路徑 是藍色文件夾才行
    NSArray* nodeArguments = [NSArray arrayWithObjects:
                              @"node",
                              srcPath,
                              nil
                              ];
    [NodeRunner startEngineWithArguments:nodeArguments];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    //Currently, only a single instance of the Node.js runtime can be started within an application.
    //Restarting the engine after it has finished running is also not supported.
    NSThread* nodejsThread = nil;
    nodejsThread = [[NSThread alloc]
                    initWithTarget:self
                    selector:@selector(startNode)
                    object:nil
                    ];
    // Set 2MB of stack space for the Node.js thread.
    //The iOS node runtime expects to have 1MB of stack space available. Having 2MB of stack space available is recommended.

    [nodejsThread setStackSize:2*1024*1024];
    [nodejsThread start];
    return YES;
}

#import "ViewController.h"

- (void)viewDidLoad {
    [super viewDidLoad];
    
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    btn.frame = CGRectMake(0, 0, self.view.frame.size.width, 88);
    btn.backgroundColor = [UIColor yellowColor];
    [self.view addSubview:btn];
    [btn addTarget:self action:@selector(myButtonAction:) forControlEvents:UIControlEventTouchUpInside];
    
}

- (void)myButtonAction:(id)sender
{
    NSString *localNodeServerURL = @"http:/127.0.0.1:3000";//Localhost 代表的是本機的位置, 通常其對應的IP 是127.0.0.1 端口號3000根據需要自定義不被占用閑置的就好
    NSURL  *url = [NSURL URLWithString:localNodeServerURL];
    NSString *versionsData = [NSString stringWithContentsOfURL:url];
    if (versionsData) {
        NSLog(@"%@",versionsData);//這里會輸出目標結果 eg json
    }
}

var http = require('http');       //http 模塊
var leftPad = require('left-pad');//left pad 模塊 

//
var  fs = require('fs');       //文件模塊
var  path = require('path'); //系統路徑模塊

var  jsonFile = './package.json';
var file = path.join(__dirname, jsonFile) //文件路徑，__dirname為當前運行js文件的目錄
//讀取本地指定的一個json 文件并s回執
var versions_server = http.createServer((request, response) => {//開啟一個本地服務
    console.log('xx' + request);
    fs.readFile(file,'utf8',function(err,data){
        response.end(data); //這里輸出讀取路徑jsonFile的json文件

}) }); /* var versions_server = http.createServer( (request, response) => { response.end('Versions: ' + JSON.stringify(process.versions) + ' left-pad: ' + leftPad(42, 5, '0')); }); */ 
versions_server.listen(3000); //監聽預定使用的端口號3000