use express

robertsource · robertsource · commit 87bdb933cdb9 · 2023-01-26T23:40:59.000-05:00
diff --git a/3.database-connection/service/data_engine.js b/3.database-connection/service/data_engine.js
@@ -0,0 +1,51 @@
+
+
+const transaction = new sql.Transaction(/* [pool] */)
+transaction.begin(err => {
+    // ... error checks
+
+    const request = new sql.Request(transaction)
+    request.query('insert into mytable (mycolumn) values (12345)', (err, result) => {
+        // ... error checks
+
+        transaction.commit(err => {
+            // ... error checks
+
+            console.log("Transaction committed.")
+        })
+    })
+})
+
+
+
+
+//transaction
+const transaction = new sql.Transaction(/* [pool] */)
+transaction.begin(err => {
+    // ... error checks
+
+    let rolledBack = false
+
+    transaction.on('rollback', aborted => {
+        // emited with aborted === true
+
+        rolledBack = true
+    })
+
+    new sql.Request(transaction)
+    .query('insert into mytable (bitcolumn) values (2)', (err, result) => {
+        // insert should fail because of invalid value
+
+        if (err) {
+            if (!rolledBack) {
+                transaction.rollback(err => {
+                    // ... error checks
+                })
+            }
+        } else {
+            transaction.commit(err => {
+                // ... error checks
+            })
+        }
+    })
+})
diff --git a/4.create-server-express/package.json b/4.create-server-express/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "4.create-server-express",
+  "version": "1.0.0",
+  "description": "",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node server.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "express": "^4.18.2"
+  }
+}
diff --git a/4.create-server-express/server.js b/4.create-server-express/server.js
@@ -0,0 +1,22 @@
+var express = require('express');
+var app = express();
+
+
+console.log('__dirname :'+__dirname);
+app.get('/index.html', function (req, res) {
+    res.sendFile( __dirname + "/view/" + "index.html" );
+})
+
+ 
+
+
+app.get('/student', function (req, res) {
+    res.send('Hello student');
+ })
+
+var server = app.listen(8000, function () {
+   var host = server.address().address
+   var port = server.address().port
+   
+   console.log("Example app listening at http://%s:%s", host, port)
+})
diff --git a/4.create-server-express/view/index.html b/4.create-server-express/view/index.html
@@ -0,0 +1,18 @@
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+    <h1>my first express project.</h1>
+
+    <form action = "/" method = "GET">
+        First Name: <input type = "text" name = "first_name">  <br>
+        Last Name:  <input type = "text" name = "last_name">
+                    <input type = "submit" value = "Submit">
+     </form>
+     
+</body>
+</html>
diff --git a/package.json b/package.json
@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "msnodesqlv8": "^3.0.1"
+  }
+}

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +{
 +  "dependencies": {
 +    "msnodesqlv8": "^3.0.1"
 +  }
 +}