Question

我正在为自己尝试开发的项目设置服务器，并分别使用SQLite和Node.js作为数据库类型和服务器平台。我对后端开发相对较新，因此我尝试设置从网页前端到后端的POST请求，以便用户提交的任何内容都将存储在“ comments.db”中，该文件将存储在服务器中所有用户名和数据（特别是用户ID和数据）。

过去，我曾尝试过以不同的方式重命名数据库，并将数据库移到几个不同的子文件中，但是在提交时总是会产生相同的错误。

以下是我的node.js文件代码：

var os = require( 'os' );

const interfaces = os.networkInterfaces();
 const addresses = [];
 var getMacAddress;



var request = require('request');
var express = require('express');
var sqlite3 = require('sqlite3');
var bodyParser = require('body-parser');


var ip = require("ip");
var address = ip.address();
var db = new sqlite3.Database('comments.db');
var app = express();

app.use(express.static(__dirname));
app.use(bodyParser.urlencoded({extended: false}));

app.get('/comments', function(request, response){
    // response.send('Hello Worlds');
    response.send("Hello my name is aestheticnoodle and you have reached a wrong");
});



app.get('/comments', function(request, response){
    console.log('GET request received at /alpha');
    db.all('SELECT * FROM comments', function(err, rows){
        if(err){
            console.log("Error");
        } else {
            response.send(rows);
            //pass rows back to the client
        }
    });
}); 


//runs once a user submits a comment
app.post('/comments', function(request, response){
    db.run('INSERT INTO comments VALUES (?, ?)', ["aestheticnoodle" ,request.body.action], function(err, rows){
        if(err){
            console.log(request.body.action);
            console.log("INSERT INTO " + err);
        } else {
            response.status(200).redirect('chat.html');
        }
    });
});

app.listen(3000, function(){
    console.log("Server is running on port 3000");
});

var admin = require("firebase-admin");


var firebaseConfig = {
    apiKey: "baseapp",
    authDomain: "fire",
    databaseURL: "inthe,
    projectId: "data",
    storageBucket: "",
    messagingSenderId: "private",
    appId: "some2"
  };
  admin.initializeApp(firebaseConfig);



var headers = {
    'App-Id': 'someappid',
    'App-Key': 'someappkey',
    'Content-Type': 'application/json'
};

var dataString = '{"text": "test run.."}';

var options = {
    url: 'https://somesite.com/v2/parse',
    method: 'POST',
    headers: headers,
    body: dataString
};

function callback(error, response, body) {
    if (!error && response.statusCode == 200) {
        console.log(body);
    }
}

request(options, callback);

，错误如下：

C:\Users\achu1\Music\projectsummer2019\cybeRx>node nodeRequest.js
Server is running on port 3000
undefined
INSERT INTO Error: SQLITE_ERROR: no such table: comments

这是我尝试在聊天机器人界面中插入html的javascript代码段：

var string = "What seems to be the problem you have been experiencing? Use one of the keywords, per <a href = \"symptomlist.html\"  target=\"_blank\"> SymptomList</a> the complete list of symptoms."
        document.getElementById("chat").innerHTML += '<form action = "/comments" method = "POST">'+ "<div id = \"botLog\" class = \"chatting\">" + string + '<textarea rows = "15" name = "comment"> Write stuff here' + '</textarea>'+ '<br><br><input type = "submit" value = "SUBMIT"/></form>' + "</div><br>";

如您所见，我试图通过将localhost方法形式制作到POST文件中来连接数据库和运行在comment.db中的html文件，该文件实际上位于我的{目录。

https://imgur.com/a/pdGAVhm

为什么节点说没有这样的数据库来执行POST命令，以及如何解决此问题，以便我的文本框数据保存到数据库中？

INSERT INTO错误：SQLITE_ERROR：没有这样的表：注释

0 个答案: