Spring dual database configuration_PHP tutorial
Sometimes we may use two databases in a project. In order to implement the function of using two or more databases, we need to configure relevant information in Spring.
The first is to add the configuration file conf.properties
<ol class="dp-c"> <li class="alt"><span><span><bean id=</span><span class="string">"propertyConfigurer"</span><span> </span><span class="keyword">class</span><span>=</span><span class="string">"org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"</span><span>> </span></span></li> <li><span> <property name=</span><span class="string">"locations"</span><span>> </span></li> <li class="alt"><span> <list> </span></li> <li><span> <value>classpath:config.properties</value> </span></li> <li class="alt"><span> </list> </span></li> <li><span> </property> </span></li> <li class="alt"><span></bean> </span></li> </ol>
The second is to add the data source (${...} corresponds to the configuration information in conf.properties)
<ol class="dp-c">
<li class="alt"><span><span><!--对应数据A的数据源--> </span></span></li>
<li><span><bean id=</span><span class="string">"dataSource_A"</span><span> </span><span class="keyword">class</span><span>=</span><span class="string">"org.apache.commons.dbcp.BasicDataSource"</span><span>> </span></li>
<li class="alt"><span> <property name=</span><span class="string">"driverClassName"</span><span> value=</span><span class="string">"${A.driver_class}"</span><span> /> </span></li>
<li><span> <property name=</span><span class="string">"url"</span><span> value=</span><span class="string">"${A.url}"</span><span> /> </span></li>
<li class="alt"><span> <property name=</span><span class="string">"username"</span><span> value=</span><span class="string">"${A.username}"</span><span> /> </span></li>
<li><span> <property name=</span><span class="string">"password"</span><span> value=</span><span class="string">"${A.password}"</span><span> /> </span></li>
<li class="alt"><span></bean> </span></li>
<li><span><!--对应数据库B的数据源--> </span></li>
<li class="alt"><span><bean id=</span><span class="string">"dataSource_B"</span><span> </span><span class="keyword">class</span><span>=</span><span class="string">"org.apache.commons.dbcp.BasicDataSource"</span><span>> </span></li>
<li><span> <property name=</span><span class="string">"driverClassName"</span><span> value=</span><span class="string">"${B.driver_class}"</span><span> /> </span></li>
<li class="alt"><span> <property name=</span><span class="string">"url"</span><span> value=</span><span class="string">"${B.url}"</span><span> /> </span></li>
<li><span> <property name=</span><span class="string">"username"</span><span> value=</span><span class="string">"${B.username}"</span><span> /> </span></li>
<li class="alt"><span> <property name=</span><span class="string">"password"</span><span> value=</span><span class="string">"${B.password}"</span><span> /> </span></li>
<li><span></bean> </span></li>
</ol>is followed by adding the corresponding sessionFactory:
<ol class="dp-c"> <li class="alt"><span><span><!-- A的sessionFactory --> </span></span></li> <li><span> <bean id=</span><span class="string">"sessionFactory_A"</span><span> </span><span class="keyword">class</span><span>=</span><span class="string">"moretv.commons.spring.hibernate3.AnnotationSessionFactoryBean"</span><span>> </span></li> <li class="alt"><span> <property name=</span><span class="string">"dataSource"</span><span> ref=</span><span class="string">"dataSource_A"</span><span>/> </span></li> <li><span> </bean> </span></li> <li class="alt"><span><!-- B的sessionFactory --> </span></li> <li><span> <bean id=</span><span class="string">"sessionFactory_B"</span><span> </span><span class="keyword">class</span><span>=</span><span class="string">"moretv.commons.spring.hibernate3.AnnotationSessionFactoryBean"</span><span>> </span></li> <li class="alt"><span> <property name=</span><span class="string">"dataSource"</span><span> ref=</span><span class="string">"dataSource_B"</span><span>/> </span></li> <li><span> </bean> </span></li> </ol>
Sometimes such configuration information appears in the dao layer in the project:
<ol class="dp-c"> <li class="alt"><span><span><bean id = </span><span class="string">"XDao"</span><span> </span><span class="keyword">class</span><span> = </span><span class="string">"xxx.xxx.xDaoImpl"</span><span>> </span></span></li> <li><span><property name=</span><span class="string">"sessionFactory"</span><span> ref=</span><span class="string">"sessionFactory"</span><span>></property> </span></li> <li class="alt"><span></bean> </span></li> </ol>
In order to achieve this, two different The database can be changed to
<ol class="dp-c"> <li class="alt"><span><span><span style=</span><span class="string">"font-family:'sans serif', tahoma, verdana, helvetica;font-size:13px;line-height:19px;white-space:normal;background-color:#ffffff;"</span><span>> </span><span style=</span><span class="string">"font-family:'sans serif', tahoma, verdana, helvetica;white-space:normal;background-color:#ffffff;"</span><span>><!--使用A数据库的DAO--></span> <bean id = </span><span class="string">"XDao"</span><span> </span><span class="keyword">class</span><span> = </span><span class="string">"xxx.xxx.xDaoImpl"</span><span>> </span></span></li> <li><span><property name=</span><span class="string">"sessionFactory"</span><span> ref=</span><span class="string">"sessionFactory_A"</span><span>></property> </span></li> <li class="alt"><span></bean> </span></li> <li><span><!--使用B数据库的DAO--> </span></li> <li class="alt"><span><bean id = </span><span class="string">"XDao"</span><span> </span><span class="keyword">class</span><span> = </span><span class="string">"xxx.xxx.xDaoImpl"</span><span>> </span></li> <li><span><property name=</span><span class="string">"sessionFactory"</span><span> ref=</span><span class="string">"sessionFactory_B"</span><span>></property> </span></li> <li class="alt"><span></bean> </span></li> </ol>
so that dual databases can be realized. . . .
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Use Spring Boot and Spring AI to build generative artificial intelligence applications
Apr 28, 2024 am 11:46 AM
As an industry leader, Spring+AI provides leading solutions for various industries through its powerful, flexible API and advanced functions. In this topic, we will delve into the application examples of Spring+AI in various fields. Each case will show how Spring+AI meets specific needs, achieves goals, and extends these LESSONSLEARNED to a wider range of applications. I hope this topic can inspire you to understand and utilize the infinite possibilities of Spring+AI more deeply. The Spring framework has a history of more than 20 years in the field of software development, and it has been 10 years since the Spring Boot 1.0 version was released. Now, no one can dispute that Spring
BTCC tutorial: How to bind and use MetaMask wallet on BTCC exchange?
Apr 26, 2024 am 09:40 AM
MetaMask (also called Little Fox Wallet in Chinese) is a free and well-received encryption wallet software. Currently, BTCC supports binding to the MetaMask wallet. After binding, you can use the MetaMask wallet to quickly log in, store value, buy coins, etc., and you can also get 20 USDT trial bonus for the first time binding. In the BTCCMetaMask wallet tutorial, we will introduce in detail how to register and use MetaMask, and how to bind and use the Little Fox wallet in BTCC. What is MetaMask wallet? With over 30 million users, MetaMask Little Fox Wallet is one of the most popular cryptocurrency wallets today. It is free to use and can be installed on the network as an extension
How to use Xiaomi Auto app
Apr 01, 2024 pm 09:19 PM
Xiaomi car software provides remote car control functions, allowing users to remotely control the vehicle through mobile phones or computers, such as opening and closing the vehicle's doors and windows, starting the engine, controlling the vehicle's air conditioner and audio, etc. The following is the use and content of this software, let's learn about it together . Comprehensive list of Xiaomi Auto app functions and usage methods 1. The Xiaomi Auto app was launched on the Apple AppStore on March 25, and can now be downloaded from the app store on Android phones; Car purchase: Learn about the core highlights and technical parameters of Xiaomi Auto, and make an appointment for a test drive. Configure and order your Xiaomi car, and support online processing of car pickup to-do items. 3. Community: Understand Xiaomi Auto brand information, exchange car experience, and share wonderful car life; 4. Car control: The mobile phone is the remote control, remote control, real-time security, easy
Application of JUnit unit testing framework in Spring projects
Apr 18, 2024 pm 04:54 PM
JUnit is a widely used Java unit testing framework in Spring projects and can be applied by following steps: Add JUnit dependency: org.junit.jupiterjunit-jupiter5.8.1test Write test cases: Use @ExtendWith(SpringExtension.class) to enable extension, use @Autowired inject beans, use @BeforeEach and @AfterEach to prepare and clean, and mark test methods with @Test.
How does Hibernate implement polymorphic mapping?
Apr 17, 2024 pm 12:09 PM
Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.
iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos
Jul 18, 2024 am 05:48 AM
Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps
Detailed tutorial on establishing a database connection using MySQLi in PHP
Jun 04, 2024 pm 01:42 PM
How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())
An in-depth analysis of how HTML reads the database
Apr 09, 2024 pm 12:36 PM
HTML cannot read the database directly, but it can be achieved through JavaScript and AJAX. The steps include establishing a database connection, sending a query, processing the response, and updating the page. This article provides a practical example of using JavaScript, AJAX and PHP to read data from a MySQL database, showing how to dynamically display query results in an HTML page. This example uses XMLHttpRequest to establish a database connection, send a query and process the response, thereby filling data into page elements and realizing the function of HTML reading the database.
