Spring Data SpringData a series of environmental structures

 

This section explains Spring Data as a major environmental structures

• JPA Spring Data: committed to reducing the amount of development data access layer (DAO) is. Developers need to do is declare an interface persistence layer, the other to the Spring Data JPA to help you complete!
• Using Spring Data JPA persistence layer development carried out in four steps required:

1. Configuring Spring integration JPA
2. Spring Data configured in the Spring configuration file, so that Spring is the interface to create a proxy object declaration. Configure: after <jpa repositories>, will scan base-package specified when initialization Spring container package directory and its subdirectories, to inherit the Repository interface to create a proxy object or its sub-interfaces, and proxy object registered as SpringBean, business layer can be used as the object by the Spring of the automatic packaging.
3. Statement persistence layer interface that inherits Repository. Interface Repository is a marker, it does not contain any methods, if necessary, Spring Data Repository other sub-interface can be realized, which defines some common CRUD, paging and related methods.
4. Declarative approach needed in the interface. Spring Data will be based on given strategies to generate their implementation code.

• Environment to build

　　　1. packages needed

　　　　① added spring pack

　　　　　　spring-aop-4.3.8.RELEASE.jar
　　　　　　spring-aspects-4.3.8.RELEASE.jar
　　　　　　spring-beans-4.3.8.RELEASE.jar
　　　　　　spring-context-4.3.8.RELEASE.jar
　　　　　　spring-core-4.3.8.RELEASE.jar
　　　　　　spring-expression-4.3.8.RELEASE.jar
　　　　　　spring-jdbc-4.3.8.RELEASE.jar
　　　　　　spring-orm-4.3.8.RELEASE.jar
　　　　　　spring-tx-4.3.8.RELEASE.jar
　　　　　　spring-web-4.3.8.RELEASE.jar
　　　　　　spring-webmvc-4.3.8.RELEASE.jar
　　　　　　com.springsource.net.sf.cglib-2.2.0.jar
　　　　　　com.springsource.org.aopalliance-1.0.0.jar
　　　　　　com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
　　　　　　commons-logging-1.1.1.jar
　　　　② 加入hibernate包
　　　　　　antlr-2.7.7.jar
　　　　　　dom4j-1.6.1.jar
　　　　　　hibernate-commons-annotations-4.0.5.Final.jar
　　　　　　hibernate-core-4.3.11.Final.jar
　　　　　　hibernate-jpa-2.1-api-1.0.0.Final.jar
　　　　　　jandex-1.1.0.Final.jar
　　　　　　javassist-3.18.1-GA.jar
　　　　　　jboss-logging-3.1.3.GA.jar
　　　　　　jboss-logging-annotations-1.2.0.Beta1.jar
　　　　　　jboss-transaction-api_1.2_spec-1.0.0.Final.jar
　　　　③ 加jpa的包
　　　　　　hibernate-entitymanager-4.3.11.Final.jar
　　　　④ 加c3p0的包
　　　　　　c3p0-0.9.2.1.jar
　　　　　　hibernate-c3p0-4.3.11.Final.jar
　　　　　　mchange-commons-java-0.2.3.4.jar
　　　　⑤ 加mysql的驱动
　　　　　　mysql-connector-java-5.1.7-bin.jar
　　　　⑥加入springData 
　　　　　　spring-data-commons-1.6.2.RELEASE.jar
　　　　　　spring-data-jpa-1.4.2.RELEASE.jar
　　　　⑦加入 slf4j-api-1.6.1.jar

　　2.Spring Bean profile

  applicationContext.xml

　　3. Database persistent classes

  Person.java

　　4.DAO

  PersonRepository.java

　　5. Test

  SpringDataTest.java