backend-dev #1
@ -1,13 +1,38 @@
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from conf.util import get_config_object
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from kafka import KafkaConsumer
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from confluent_kafka import Consumer
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import json, re
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conf = get_config_object()
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# Kafka
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def get_KafkaConsumer() -> KafkaConsumer:
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""" 返回KafkaConsumer对象 """
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consumer = KafkaConsumer(
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bootstrap_servers=conf.get("kafka", "bootstrap_servers"),
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group_id=conf.get("kafka", "group_id")
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)
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return consumer
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def get_KafkaConsumer() -> Consumer:
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"""返回KafkaConsumer对象"""
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kafka_conf = {
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"bootstrap.servers": conf.get("kafka", "bootstrap_servers"),
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"group.id": conf.get("kafka", "group_id"),
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"auto.offset.reset": "earliest",
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}
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consumer = Consumer(kafka_conf)
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return consumer
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def raw_Data_to_jsonstr(data: str) -> str:
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"""
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将原始数据切分转换为json字符串
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"""
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# 清理转义字符
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data = re.sub(r'\\', '', data)
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# 去除多余的空格和换行符
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data = data.strip()
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data_list = data.split("\t")
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return {
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"order_id": data_list[0],
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"order_category": data_list[1],
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"order_name": data_list[2],
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"order_quantity": data_list[3],
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"date": data_list[4],
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"is_valid": data_list[5],
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}
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@ -1,4 +1,39 @@
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from flask import Blueprint
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from flask import Blueprint, jsonify
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from dao.kafka.util import get_KafkaConsumer, raw_Data_to_jsonstr
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from confluent_kafka import KafkaError
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api_bp = Blueprint('api', __name__)
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@api_bp.route('/readkafka', methods=['GET'])
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def readKafka():
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consumer = get_KafkaConsumer()
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# 订阅Kafka主题
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consumer.subscribe(["orders"])
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# 读取Kafka消息
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messages = []
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try:
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while True:
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msg = consumer.poll(timeout=1.0)
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if msg is None:
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break
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if msg.error():
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if msg.error().code() == KafkaError._PARTITION_EOF:
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continue
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else:
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print(msg.error())
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break
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messages.append(raw_Data_to_jsonstr(msg.value().decode('utf-8')))
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# 这里只读取最新的10条消息
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if len(messages) >= 100:
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break
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finally:
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# 取消订阅并关闭消费者
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consumer.unsubscribe()
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consumer.close()
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return jsonify(messages)
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@api_bp.route('/test', methods=['GET'])
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def test():
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return jsonify({"message": "Hello, World!"})
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@ -6,3 +6,7 @@ page_bp = Blueprint('page', __name__)
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@page_bp.route('/')
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def index():
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return render_template('index.html')
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@page_bp.route('/show')
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def test():
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return render_template('show.html')
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105
templates/show.html
Normal file
105
templates/show.html
Normal file
@ -0,0 +1,105 @@
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>订单展示</title>
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<style>
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body {
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font-family: Arial, sans-serif;
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margin: 0;
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padding: 20px;
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background-color: #f4f4f9;
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}
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h1 {
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text-align: center;
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color: #333;
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}
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.container {
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max-width: 1200px;
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margin: 0 auto;
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padding: 20px;
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}
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table {
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width: 100%;
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border-collapse: collapse;
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margin-top: 20px;
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
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}
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th, td {
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padding: 12px;
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text-align: left;
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border: 1px solid #ddd;
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}
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th {
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background-color: #f2f2f2;
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}
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tr:nth-child(even) {
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background-color: #f9f9f9;
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}
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.valid {
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color: green;
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font-weight: bold;
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}
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.invalid {
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color: red;
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font-weight: bold;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<h1>订单信息</h1>
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<table id="orders-table">
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<thead>
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<tr>
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<th>订单ID</th>
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<th>订单分类</th>
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<th>订单名称</th>
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<th>数量</th>
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<th>日期</th>
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<th>是否有效</th>
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</tr>
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</thead>
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<tbody>
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<!-- 这里将通过 JavaScript 动态填充订单数据 -->
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</tbody>
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</table>
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</div>
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<script>
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// 定义一个函数用于请求数据并更新表格
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function fetchAndUpdateOrders() {
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fetch('/readkafka') // Flask API 路径
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.then(response => response.json())
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.then(data => {
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const tableBody = document.querySelector('#orders-table tbody');
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// 清空现有的表格内容
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tableBody.innerHTML = '';
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// 填充新的数据
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data.forEach(order => {
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const row = document.createElement('tr');
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row.innerHTML = `
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<td>${order.order_id}</td>
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<td>${order.order_category}</td>
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<td>${order.order_name}</td>
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<td>${order.order_quantity}</td>
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<td>${order.date}</td>
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<td class="${order.is_valid === 'Y' ? 'valid' : 'invalid'}">${order.is_valid === 'Y' ? '有效' : '无效'}</td>
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`;
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tableBody.appendChild(row);
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});
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})
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.catch(error => {
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console.error('获取订单数据失败:', error);
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});
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}
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// 页面加载时，立即调用一次更新数据的函数
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fetchAndUpdateOrders();
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// 设置轮询：每 5 秒请求一次数据并更新表格
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setInterval(fetchAndUpdateOrders, 5000); // 5000 毫秒 = 5 秒
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</script>
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</body>
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</html>
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Reference in New Issue
Block a user