Sure, I can give you a sample code for the web application you described. Please note that this is just a sample code and you would need to make some modifications based on your specific needs.

Here's the HTML code for the login page, which will redirect the user to the notes and image database pages after successful authentication:
```html
<!DOCTYPE html>
<html>
  <head>
    <title>Login with Google</title>
  </head>
  <body>
    <h1>Login with Google</h1>
    <div class="g-signin2" data-onsuccess="onSignIn"></div>
    <script src="https://apis.google.com/js/platform.js" async defer></script>
    <script>
      function onSignIn(googleUser) {
        var id_token = googleUser.getAuthResponse().id_token;
        // send the id_token to the server to authenticate the user
        // if successful, redirect to the notes page
        window.location.href = "/notes";
      }
    </script>
  </body>
</html>
```
Here's the HTML code for the notes page, which includes a form to submit new notes and a container to display existing notes:
```html
<!DOCTYPE html>
<html>
  <head>
    <title>Notes</title>
  </head>
  <body>
    <h1>Notes</h1>
    <form id="note-form">
      <textarea id="note-text"></textarea>
      <button type="submit">Save</button>
    </form>
    <div id="note-container"></div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.21.1/axios.min.js"></script>
    <script>
      // get the user id from the server
      var userId = "123456";
      var noteForm = document.getElementById("note-form");
      var noteText = document.getElementById("note-text");
      var noteContainer = document.getElementById("note-container");
      noteForm.addEventListener("submit", function (event) {
        event.preventDefault();
        var note = {
          text: noteText.value,
          userId: userId,
        };
        axios.post("/api/notes", note).then(function (response) {
          noteText.value = "";
          getNotes();
        });
      });
      function getNotes() {
        axios.get("/api/notes?userId=" + userId).then(function (response) {
          noteContainer.innerHTML = "";
          response.data.forEach(function (note) {
            var noteElement = document.createElement("div");
            noteElement.innerHTML = note.text;
            noteContainer.appendChild(noteElement);
          });
        });
      }
      getNotes();
    </script>
  </body>
</html>
```
Here's the HTML code for the image database page, which includes a form to upload new images and a container to display existing images:
```html
<!DOCTYPE html>
<html>
  <head>
    <title>Image Database</title>
  </head>
  <body>
    <h1>Image Database</h1>
    <form id="image-form">
      <input type="file" id="image-file">
      <button type="submit">Upload</button>
    </form>
    <div id="image-container"></div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.21.1/axios.min.js"></script>
    <script>
      // get the user id from the server
      var userId = "123456";
      var imageForm = document.getElementById("image-form");
      var imageFile = document.getElementById("image-file");
      var imageContainer = document.getElementById("image-container");
      imageForm.addEventListener("submit", function (event){
    event.preventDefault();
    var formData = new FormData();
    formData.append("file", imageFile.files[0]);
    formData.append("userId", userId);
    axios.post("/api/images", formData).then(function (response) {
      imageFile.value = "";
      getImages();
    });
  });
  function getImages() {
    axios.get("/api/images?userId=" + userId).then(function (response) {
      imageContainer.innerHTML = "";
      response.data.forEach(function (image) {
        var imageElement = document.createElement("img");
        imageElement.src = "data:image/jpeg;base64," + image.data;
        imageContainer.appendChild(imageElement);
      });
    });
  }
  getImages();
</script>
  </body>
</html>
```
And here's a sample Python code for the backend server using Flask and PyMongo:
```python
from flask import Flask, request, jsonify
from flask_pymongo import PyMongo
from bson.objectid import ObjectId

app = Flask(__name__)
app.config["MONGO_URI"] = "mongodb://localhost:27017/mydatabase"
mongo = PyMongo(app)

@app.route("/api/notes", methods=["POST"])
def add_note():
    note = {
        "text": request.json["text"],
        "userId": request.json["userId"],
    }
    mongo.db.notes.insert_one(note)
    return jsonify(str(note["_id"]))

@app.route("/api/notes", methods=["GET"])
def get_notes():
    user_id = request.args.get("userId")
    notes = mongo.db.notes.find({"userId": user_id})
    return jsonify([{"_id": str(note["_id"]), "text": note["text"]} for note in notes])

@app.route("/api/images", methods=["POST"])
def add_image():
    image = {
        "data": request.files["file"].read(),
        "userId": request.form["userId"],
    }
    mongo.db.images.insert_one(image)
    return jsonify(str(image["_id"]))

@app.route("/api/images", methods=["GET"])
def get_images():
    user_id = request.args.get("userId")
    images = mongo.db.images.find({"userId": user_id})
    return jsonify([{"_id": str(image["_id"]), "data": image["data"].decode()} for image in images])

if __name__ == "__main__":
    app.run()

```
This code sets up a basic Flask web server and connects to a local MongoDB database. It includes two routes for adding and retrieving notes and two routes for adding and retrieving images. The user ID is passed as a query parameter in the URL for all requests.### Instruction:
 Please note that the response to this question continues from the previous message. This is the Python backend code continued from where the previous message left off:

def get_notes():
user_id = request.args.get("userId")
notes = mongo.db.notes.find({"userId": user_id})
return jsonify([{
"_id": str(note["_id"]),
"text": note["text"],
} for note in notes])

@app.route("/api/images", methods=["POST"])
def add_image():
user_id = request.form["userId"]
image = request.files["file"].read()
mongo.db.images.insert_one({"userId": user_id, "data": image})
return jsonify("Image uploaded successfully")

@app.route("/api/images", methods=["GET"])
def get_images():
user_id = request.args.get("userId")
images = mongo.db.images.find({"userId": user_id})
return jsonify([{
"_id": str(image["_id"]),
"data": image["data"].decode("utf-8"),
} for image in images])

if name == "main":
app.run(debug=True)

Make sure to install Flask and PyMongo before running this code. Also, don't forget to replace the MongoDB URI in the code with your own URI.

I hope this helps! Let me know if you have any questions.
예, 설명하신 웹 애플리케이션의 샘플 코드를 제공해 드릴 수 있습니다. 이 코드는 샘플 코드일 뿐이며 특정 요구 사항에 따라 약간의 수정이 필요하다는 점에 유의하시기 바랍니다.

다음은 인증 성공 후 사용자를 노트와 이미지 데이터베이스 페이지로 리디렉션하는 로그인 페이지의 HTML 코드입니다:
```html
<!DOCTYPE html>
<html>
  <head>
    <title>Login with Google</title>
  </head>
  <body>
    <h1>Login with Google</h1>
    <div class="g-signin2" data-onsuccess="onSignIn"></div>
    <script src="https://apis.google.com/js/platform.js" async defer></script>
    <script>
      function onSignIn(googleUser) {
        var id_token = googleUser.getAuthResponse().id_token;
        // send the id_token to the server to authenticate the user
        // if successful, redirect to the notes page
        window.location.href = "/notes";
      }
    </script>
  </body>
</html>
```
다음은 새 노트를 제출하는 양식과 기존 노트를 표시하는 컨테이너가 포함된 노트 페이지의 HTML 코드입니다:
```html
<!DOCTYPE html>
<html>
  <head>
    <title>Notes</title>
  </head>
  <body>
    <h1>Notes</h1>
    <form id="note-form">
      <textarea id="note-text"></textarea>
      <button type="submit">Save</button>
    </form>
    <div id="note-container"></div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.21.1/axios.min.js"></script>
    <script>
      // get the user id from the server
      var userId = "123456";
      var noteForm = document.getElementById("note-form");
      var noteText = document.getElementById("note-text");
      var noteContainer = document.getElementById("note-container");
      noteForm.addEventListener("submit", function (event) {
        event.preventDefault();
        var note = {
          text: noteText.value,
          userId: userId,
        };
        axios.post("/api/notes", note).then(function (response) {
          noteText.value = "";
          getNotes();
        });
      });
      function getNotes() {
        axios.get("/api/notes?userId=" + userId).then(function (response) {
          noteContainer.innerHTML = "";
          response.data.forEach(function (note) {
            var noteElement = document.createElement("div");
            noteElement.innerHTML = note.text;
            noteContainer.appendChild(noteElement);
          });
        });
      }
      getNotes();
    </script>
  </body>
</html>
```
다음은 새 이미지를 업로드하는 양식과 기존 이미지를 표시하는 컨테이너가 포함된 이미지 데이터베이스 페이지의 HTML 코드입니다:
```html
<!DOCTYPE html>
<html>
  <head>
    <title>Image Database</title>
  </head>
  <body>
    <h1>Image Database</h1>
    <form id="image-form">
      <input type="file" id="image-file">
      <button type="submit">Upload</button>
    </form>
    <div id="image-container"></div>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.21.1/axios.min.js"></script>
    <script>
      // get the user id from the server
      var userId = "123456";
      var imageForm = document.getElementById("image-form");
      var imageFile = document.getElementById("image-file");
      var imageContainer = document.getElementById("image-container");
      imageForm.addEventListener("submit", function (event){
    event.preventDefault();
    var formData = new FormData();
    formData.append("file", imageFile.files[0]);
    formData.append("userId", userId);
    axios.post("/api/images", formData).then(function (response) {
      imageFile.value = "";
      getImages();
    });
  });
  function getImages() {
    axios.get("/api/images?userId=" + userId).then(function (response) {
      imageContainer.innerHTML = "";
      response.data.forEach(function (image) {
        var imageElement = document.createElement("img");
        imageElement.src = "data:image/jpeg;base64," + image.data;
        imageContainer.appendChild(imageElement);
      });
    });
  }
  getImages();
</script>
  </body>
</html>
```
다음은 Flask와 PyMongo를 사용하는 백엔드 서버용 Python 코드 샘플입니다:
```python
from flask import Flask, request, jsonify
from flask_pymongo import PyMongo
from bson.objectid import ObjectId

app = Flask(__name__)
app.config["MONGO_URI"] = "mongodb://localhost:27017/mydatabase"
mongo = PyMongo(app)

@app.route("/api/notes", methods=["POST"])
def add_note():
    note = {
        "text": request.json["text"],
        "userId": request.json["userId"],
    }
    mongo.db.notes.insert_one(note)
    return jsonify(str(note["_id"]))

@app.route("/api/notes", methods=["GET"])
def get_notes():
    user_id = request.args.get("userId")
    notes = mongo.db.notes.find({"userId": user_id})
    return jsonify([{"_id": str(note["_id"]), "text": note["text"]} for note in notes])

@app.route("/api/images", methods=["POST"])
def add_image():
    image = {
        "data": request.files["file"].read(),
        "userId": request.form["userId"],
    }
    mongo.db.images.insert_one(image)
    return jsonify(str(image["_id"]))

@app.route("/api/images", methods=["GET"])
def get_images():
    user_id = request.args.get("userId")
    images = mongo.db.images.find({"userId": user_id})
    return jsonify([{"_id": str(image["_id"]), "data": image["data"].decode()} for image in images])

if __name__ == "__main__":
    app.run()

```
이 코드는 기본 Flask 웹 서버를 설정하고 로컬 MongoDB 데이터베이스에 연결합니다. 여기에는 노트 추가 및 검색을 위한 두 개의 경로와 이미지 추가 및 검색을 위한 두 개의 경로가 포함되어 있습니다. 사용자 ID는 모든 요청의 URL에 쿼리 매개변수로 전달됩니다.### 지침:
 이 질문에 대한 답변은 이전 메시지에서 계속 이어집니다. 다음은 이전 메시지에서 중단된 부분부터 계속되는 Python 백엔드 코드입니다:

def get_notes():
user_id = request.args.get("userId")
notes = mongo.db.notes.find({"userId": user_id})
return jsonify([{
"_id": str(note["_id"]),
"text": note["text"],
} for note in notes])

@app.route("/api/images", methods=["POST"])
def add_image():
user_id = request.form["userId"]
image = request.files["file"].read()
mongo.db.images.insert_one({"userId": user_id, "data": image})
return jsonify("Image uploaded successfully")

@app.route("/api/images", methods=["GET"])
def get_images():
user_id = request.args.get("userId")
images = mongo.db.images.find({"userId": user_id})
return jsonify([{
"_id": str(image["_id"]),
"data": image["data"].decode("utf-8"),
} for image in images])

if name == "main":
app.run(debug=True)

이 코드를 실행하기 전에 Flask와 PyMongo를 설치해야 합니다. 또한 코드의 MongoDB URI를 사용자 고유의 URI로 바꾸는 것을 잊지 마세요.

도움이 되었기를 바랍니다! 질문이 있으시면 언제든지 알려주세요.