Spring Notes ④--spring integrated Hibernate link Database

Integrate hibernate

Integrate what?

1. An IOC container to manage Hibernate's sessionfactory
2. Let hibernate use a declarative transaction on spring

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Add Hibernate driver Package first

New Hibernate.cfg.xml

Configure basic properties for Hibernate

1. The data source needs to be configured in the IOC container, so you no longer need to configure the data source here
2. The associated. Hbm.xml is also configured in the IOC container when the Sessionfactory instance is configured.
3. Configure Hibernate's basic properties: dialect, SQL display and formatting, strategies for generating data tables, and level two caching.

<Propertyname="hibernate.dialect"> Org.hibernate.dialect.MySQL5Dialect</Property> ? <Propertyname=' hibernate.show_sql '>true</ Property > <Propertyname="hibernate.format_sql">true</ Property> ? <Propertyname="Hibernate.hbm2ddl.auto">update</propert

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Ctrl+shift+t Open source file

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When you join spring

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Db.properties

jdbc.user=Root jdbc.password=Root jdbc.driverclass=Com.mysql.jdbc.Driver jdbc.jdbcurl=jdbc:mysql://localhost: 3306/spring ? Jdbc.initpoolsize=5 Jdbc.maxpoolsize=Ten

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Configure the data source

Need to import

???? xmlns:context= "Http://www.springframework.org/schema/context"

<!-- Configure the data source - ???? <context:property-placeholderlocation="Classpath:db.properties" /> ???? <bean id= " DataSource " class= "Com.mchange.v2.c3p0.ComboPooledDataSource" > ???????? <property name= "user" value= "${jdbc.user}" ></< Span style= "COLOR: #3f7f7f" >property> ???????? <property name= "password" value< Span style= "Color:black" >= "${jdbc.password}" > </property> ???????? <property name= "Driverclass" Value= "${jdbc.driverclass}" ></property> ???????? <property name= "Jdbcurl" value< Span style= "Color:black" >= "${jdbc.jdbcurl}" > </property> ???????? <property name= "Initialpoolsize" Value= "${jdbc.initpoolsize}" ></property> ???????? <propertyname="Maxpoolsize"value="${jdbc.maxpoolsize}" ></Property> ???? </Bean>

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Test class test can get DataSource

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Public class Go { ???? privatestatic applicationcontext ctx=new Classpathxmlapplicationcontext ("Applicationcontext.xml"); ? ???? Public staticvoid main (string[] args) throws SQLException { ???????? DataSource D= ctx. Getbean (DataSource. class ); ???????? System. out. println (D. getconnection ()); ????} }

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Using spring to manipulate hibernate and use spring's transactions

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Spring Notes ④--spring integrated Hibernate link Database