为什么我的Go服务器不能读取Swift帖子？

Question

我一直在尝试打印和HTTP post使用Swift的一个移动应用程序，我可以用javascript和express登录它。js。但当使用Go创建的服务器时，它会给我：

Get "http://192.121.1.397:8080": dial tcp http://192.121.1.397:8080: i/o timeout
exit status 1

下面你可以看到所有3种语言的代码：

斯威夫特：

import Foundation


class Service: NSObject {
    static let shared = Service()
    
    func fetch(completion: @escaping (Result<[Post], Error>) -> ()){
        guard let url = URL(string: "http://192.121.1.397:8080" ) else{return}
        
        URLSession.shared.dataTask(with: url) { (data, resp, err) in
            if let err = err {
                print(err)
                return
            }
            
            guard let data = data else {return}
            
            do{
                let posts = try JSONDecoder().decode([Post].self, from:data)
                completion(.success(posts))
            } catch{
                completion(.failure(error))
            }
        }
    }
    func post(title: String, body: String, completion: @escaping (Error?) -> ())  {
        guard let url = URL(string: "http://192.168.1.148:8080") else{return}
        var urlReq = URLRequest(url:url)
        urlReq.httpMethod = "POST"
        
        let params = ["title": title, "postBody": body]
        
        do{
            let data = try JSONSerialization.data(withJSONObject: params, options: .init())
            
            urlReq.httpBody = data
            urlReq.setValue("application/json", forHTTPHeaderField: "Content-Type")
            
            URLSession.shared.dataTask(with: urlReq){(data, resp, err) in
                guard let data = data else{return}
                completion(nil)
            }.resume()
        } catch{
            completion(error)
        }
    }
}

在另一个文件的@obj func中调用：

 @objc func ButtonClicked(sender: UIButton)->Void{
      
     
        
      sceneView.allowsCameraControl  = false

        
        if(buttonsArray[sender.tag].nav == false){
        
            if(buttonsArray[sender.tag].name == "News"){
                Service.shared.post(title:"rodo" , body:"aya"){
                    (err) in
                    if let err = err{
                        print(err)
                        return
                    }
                    print("posted")
                }
}

戈朗代码：

package main

import (
    "fmt"
    "os"
    "io/ioutil"
    "log"
    "net/http"
)


func main() {
    http.HandleFunc("/", HelloServer) // deal
    http.ListenAndServe(":8080", nil)
   
}

func HelloServer(w http.ResponseWriter, r *http.Request) {
    // fmt.Fprintf(w, "Hello, lol") // post

    resp, err := http.Get("http://http://192.121.1.397:8080") //https://api.github.com/repos/dotcloud/docker

if err != nil{
    fmt.Println("now")
    log.Fatal(err)
}

defer resp.Body.Close()

body, err := ioutil.ReadAll(resp.Body)

if err != nil{
    fmt.Println("here")
    log.Fatal(err)
}

_, err = os.Stdout.Write(body)
// _, err = fmt.Println(string(body))

if err != nil{
    fmt.Println("There")
    log.Fatal(err)
}
}

可以阅读文章的Javascript服务器：

const express = require('express')
const app = express()
var bodyParser = require('body-parser')
const port = process.env.PORT || 8080
;
app.use(bodyParser.urlencoded({ extended: true }))

// parse application/json
app.use(bodyParser.json())


app.get('/', (req, res) => {
    res.send({ express: 'YOUR EXPRESS BACKEND IS CONNECTED TO REACT' })
   
}
)


app.post('/', function(req, res) {
    var parsedBody = req.body;
    console.log(parsedBody)
    res.send({ express: 'YOUR EXPRESS BACKEND IS CONNECTED TO REACT' })

 });




app.listen(port, () => console.log(`Example app listening on port ${port}!`))

谢谢你抽出时间

Answer 1

...... http. get（"超文本传输协议：//http://192.121.1.397:8080"）

这不是有效的URL。它应该只有http://192.121.1.397:8080。

除此之外，我真的不确定你在做什么。为什么要尝试在同一服务器的处理程序中访问服务器？这也不同于在nodejs中所做的，在nodejs中只发送一个简单的响应。