SpringData JPA 如何搭建 xml的配置方式
作者：荭色海湾
这篇文章主要介绍了SpringData JPA 如何搭建 xml的配置方式,本文通过实例代码给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友参考下吧
1.导入版本管理依赖 到父项目里
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-bom</artifactId>
<version>2021.1.10</version>
<scope>import</scope>
<type>pom</type>
</dependency>
</dependencies>
</dependencyManagement>2.导入spring-data-jpa 依赖 在子模块
<dependencies>
<!-- Junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.4.32.Final</version>
</dependency>
<!-- mysql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!-- jpa -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.8</version>
</dependency>
<!-- spring - test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.3.10</version>
<scope>test</scope>
</dependency>
</dependencies>3.创建实体类
package com.kuang.pojo;
import javax.persistence.*;
@Entity//作为 hibernate实体类
@Table(name = "tb_customer")//映射的表名
public class Customer {
/**
* @Id: 声明主键的配置
* @GeneratedValue: 配置主键的生成策略
* strategy :
* 1. GenerationType.IDENTITY :自增 mysql
* 底层数据库必须支持自动增长 (底层数据库支持的自动增长方式，对id自增)
* 2. GenerationType.SEQUENCE : 序列 ，oracle
* 底层书库必须支持序列
* 3. GenerationType.TABLE : jpa 提供的一种机制， 通过一张数据库表的形式帮助我们完成主键的配置
* 4. GenerationType.AUTO : 由程序自动的帮助我们选择主键生成策略
* @Column(name = "cust_id") 配置属性和字段的映射关系
* name: 数据库表中字段的名称
*/
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "cust_id")
private Long custId;//客户的主键
@Column(name = "cust_name")
private String custName;//客户的名称
@Column(name = "cust_address")
private String custAddress;
public Long getCustId() {
return custId;
}
public void setCustId(Long custId) {
this.custId = custId;
}
public String getCustName() {
return custName;
}
public void setCustName(String custName) {
this.custName = custName;
}
public String getCustAddress() {
return custAddress;
}
public void setCustAddress(String custAddress) {
this.custAddress = custAddress;
}
@Override
public String toString() {
return "Customer{" +
"custId=" + custId +
", custName='" + custName + '\'' +
", custAddress='" + custAddress + '\'' +
'}';
}
}4.创建spring配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/data/jpa
https://www.springframework.org/schema/data/jpa/spring-jpa.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 用于整合 jpa 相当于 @EnableJpaRepositories -->
<jpa:repositories base-package="com.kuang.repositories"
entity-manager-factory-ref="entityManagerFactory"
transaction-manager-ref="transactionManager"
/>
<!-- 配置 bean EntityManagerFactory -->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="jpaVendorAdapter">
<!-- Hibernate 实现 -->
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<!-- 是否自动的表的生成 true 相当于之前的 update false 相当于 none -->
<property name="generateDdl" value="true"/>
<!-- 是否显示sql -->
<property name="showSql" value="true"/>
</bean>
</property>
<!-- 扫描实体类的包 来决定哪些实体类做 ORM映射 -->
<property name="packagesToScan" value="com.kuang.pojo"></property>
<!-- 数据源 druid -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 数据源-->
<bean class="com.alibaba.druid.pool.DruidDataSource" id="dataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/springdata_jpa?useUnicode=true&useSSL=false&characterEncoding=UTF-8"/>
<property name="username" value="root"/>
<property name="password" value="2001"/>
</bean>
<!-- 声明式事务 -->
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<!-- 启动注解方式的声明式事务-->
<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
</beans>5.创建Repository接口
package com.kuang.repositories;
import com.kuang.pojo.Customer;
import org.springframework.data.repository.CrudRepository;
public interface CustomerRepository extends CrudRepository<Customer,Long> {
}6.测试通过主键查询
package com.kuang.test;
import com.kuang.pojo.Customer;
import com.kuang.repositories.CustomerRepository;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.Optional;
@ContextConfiguration("/spring.xml")
@RunWith(SpringJUnit4ClassRunner.class)
public class SpringDataJpaTest {
@Autowired
private CustomerRepository customerRepository;
@Test
public void select() {
Optional<Customer> byId = customerRepository.findById(1L);
Customer customer = byId.get();
System.out.println(customer);
}
}
package com.kuang.test;
import com.kuang.pojo.Customer;
import com.kuang.repositories.CustomerRepository;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.Optional;
@ContextConfiguration("/spring.xml")
@RunWith(SpringJUnit4ClassRunner.class)
public class SpringDataJpaTest {
@Autowired
private CustomerRepository customerRepository;
@Test
public void select() {
Optional<Customer> byId = customerRepository.findById(1L);
Customer customer = byId.get();
System.out.println(customer);
}
@Test
public void insert() {
Customer customer = new Customer();
customer.setCustAddress("南环路");
customer.setCustName("豪哥");
Customer save = customerRepository.save(customer);
save.setCustAddress("刘备");
System.out.println(customer);
}
@Test
public void update() {
Customer customer = new Customer();
customer.setCustId(1L);
customer.setCustAddress("栖霞路");
customer.setCustName("张飞");
Customer save = customerRepository.save(customer);
}
@Test
public void remove() {
Customer customer = new Customer();
customer.setCustId(1L);
customerRepository.delete(customer);
}
}到此这篇关于SpringData JPA 搭建 xml的 配置方式的文章就介绍到这了,更多相关SpringData JPA 搭建 xml内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！