提交demo代码

demo/src/main/resources/application.properties

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+# 应用服务 WEB 访问端口
+server.port=9090
+
+# DataSource configuration using HikariCP (default connection pool in Spring Boot)
+spring.datasource.url=jdbc:mysql://120.78.126.4:5455/rag_flow?useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
+spring.datasource.username=root
+spring.datasource.password=infini_rag_flow
+spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+# HikariCP specific properties (optional)
+spring.datasource.hikari.maximum-pool-size=10
+spring.datasource.hikari.minimum-idle=5
+spring.datasource.hikari.idle-timeout=300000
+spring.datasource.hikari.max-lifetime=1800000
+spring.datasource.hikari.connection-timeout=30000
+
+mybatis-plus:
+#mapper配置文件
+mapper-locations: classpath:mapper/*.xml
+type-aliases-package: com.example.demo.model #需要配置成你当前包下的实体类路径
+configuration:
+#开启驼峰命名
+map-underscore-to-camel-case: true
+log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+

demo/src/main/resources/mapper/ElectricityBillMapper.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.example.demo.mapper.ElectricityBillMapper">
+        <select id="queryElectricityByDate"  resultType="com.example.demo.model.ElectricityBill" >
+                    select * from electricity_bill
+        </select>
+</mapper>
+

demo/src/main/resources/static/index.html

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+<html>
+    <body>
+        <h1>hello word!!!</h1>
+        <p>this is a html page</p>
+    </body>
+</html>