【Spring Data JPA】06 全注解配置（非SpringBoot整合）

总依赖组件坐标：

    <properties>
        <spring.version>5.2.8.RELEASE</spring.version>
        <hibernate.version>5.0.7.Final</hibernate.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>${hibernate.version}</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.2.1.Final</version>
        </dependency>

        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.5</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.20</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.3.2.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.2.8.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>javax.el</groupId>
            <artifactId>javax.el-api</artifactId>
            <version>2.2.4</version>
        </dependency>

        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>javax.el</artifactId>
            <version>2.2.4</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>

    </dependencies>

设置一个配置类的包

cn.xxx.config

设置总配置加载类

package cn.echo42.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;

/**
 * @author DaiZhiZhou
 * @file SpringDataJpa
 * @create 2020-07-31 10:20
 */

@Configuration
@Import({SpringDataJpaConfiguration.class,DataSourceConfiguration.class})
@ComponentScan("cn.echo42")
public class ApplicationConfiguration {
}

其中导入了数据源和SpringDataJpa的配置类

数据源配置：

太懒，没写配置文件了

package cn.echo42.config;

import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;
import java.beans.PropertyVetoException;

/**
 * @author DaiZhiZhou
 * @file SpringDataJpa
 * @create 2020-07-31 10:22
 */

@Configuration
public class DataSourceConfiguration {

    @Bean("dataSource")
    public DataSource getDataSource(
            @Value("com.mysql.cj.jdbc.Driver") String driverClass,
            @Value("jdbc:mysql:///oa?serverTimezone=Asia/Shanghai") String url,
            @Value("root") String user,
            @Value("123456") String password) throws PropertyVetoException {
        ComboPooledDataSource comboPooledDataSource = new ComboPooledDataSource();
        comboPooledDataSource.setDriverClass(driverClass);
        comboPooledDataSource.setJdbcUrl(url);
        comboPooledDataSource.setUser(user);
        comboPooledDataSource.setPassword(password);
        return comboPooledDataSource;
    }

}

SpringDataJpa配置：

package cn.echo42.config;

import org.hibernate.jpa.HibernatePersistenceProvider;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.vendor.HibernateJpaDialect;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;

import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;

/**
 * @author DaiZhiZhou
 * @file SpringDataJpa
 * @create 2020-07-31 11:06
 */

@Configuration
//@Import(DataSourceConfiguration.class)
@EnableJpaRepositories(
        basePackages = "cn.echo42.dao",
        transactionManagerRef = "jpaTransactionManager",
        entityManagerFactoryRef = "entityManagerFactory"
)
public class SpringDataJpaConfiguration {

    @Bean("persistenceProvider") /* Jpa实现者 即规范供应商 */
    public HibernatePersistenceProvider getProvider(){
        return new HibernatePersistenceProvider();
    }

    @Bean("jpaDialect") /* Jpa方言对象 */
    public HibernateJpaDialect getHibernateJpaDialect(){
        return new HibernateJpaDialect();
    }

    @Bean("adapter") /* 实现者适配器 */
    public HibernateJpaVendorAdapter getHibernateJpaVendorAdapter(){
        HibernateJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
        adapter.setDatabase(Database.MYSQL);
        adapter.setGenerateDdl(false);
        adapter.setShowSql(true);
        adapter.setDatabasePlatform("org.hibernate.dialect.MySQLDialect");
        return adapter;
    }

    @Bean("entityManagerFactory")
    public LocalContainerEntityManagerFactoryBean getEntityManagerFactoryBean (
            DataSource dataSource,
            @Value("cn.echo42.entity") String scanPath,
            HibernatePersistenceProvider hibernatePersistenceProvider,
            HibernateJpaDialect hibernateJpaDialect) {
        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
        factoryBean.setDataSource(dataSource);
        factoryBean.setPackagesToScan(scanPath);
        factoryBean.setPersistenceProvider(hibernatePersistenceProvider);
        factoryBean.setJpaDialect(hibernateJpaDialect);
        return factoryBean;
    }

    @Bean("jpaTransactionManager") /* Jpa事务管理器 */
    public JpaTransactionManager getJpaTransactionManager(EntityManagerFactory factoryBean) {
        JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
        jpaTransactionManager.setEntityManagerFactory(factoryBean);
        return jpaTransactionManager;
    }

}

用户实体类：

package cn.echo42.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import javax.persistence.*;

/**
 * @author DaiZhiZhou
 * @file SpringDataJpa
 * @create 2020-07-31 10:54
 */

@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity
@Table(name = "sys_user")
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer user_id; // @Column(name = "user_id")
    private String user_name; // @Column(name = "user_name")
    private String user_password; // @Column(name = "user_password")
    private Integer user_status; // @Column(name = "user_status")
    private Integer user_is_del; // @Column(name = "user_is_del")
}

用户持久化接口：

package cn.echo42.dao;

import cn.echo42.entity.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;

/**
 * @author DaiZhiZhou
 * @file SpringDataJpa
 * @create 2020-07-31 10:58
 */
public interface UserDao extends JpaRepository<User,Integer> , JpaSpecificationExecutor<User> {

}

最后的测试类：

import cn.echo42.config.ApplicationConfiguration;
import cn.echo42.dao.UserDao;
import cn.echo42.entity.User;
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.List;

/**
 * @author DaiZhiZhou
 * @file SpringDataJpa
 * @create 2020-07-31 10:52
 */

@RunWith(SpringJUnit4ClassRunner.class)
// @ContextConfiguration(locations = "classpath:Bean-Context.xml") // XML加载
@ContextConfiguration(classes = ApplicationConfiguration.class) // JavaConfig
public class SpringDataJpaTest {

    @Autowired
    private UserDao userDao;

    @Test
    public void quickStart(){
        List<User> userList = userDao.findAll();
        for (User user : userList) {
            System.out.println(user);
        }
    }
}

测试结果：

User(user_id=1, user_name=admin, user_password=admin, user_status=1, user_is_del=0)
User(user_id=2, user_name=user01, user_password=123456, user_status=1, user_is_del=0)
User(user_id=3, user_name=user02, user_password=123456, user_status=1, user_is_del=0)
User(user_id=4, user_name=user03, user_password=123456, user_status=1, user_is_del=0)
User(user_id=5, user_name=admin02, user_password=admin02, user_status=1, user_is_del=0)

如果需要日志打印：

在Resource目录种配置日志【log4j.properties】

log4j.rootLogger=DEBUG,console,file
# Settings About ConsoleOutput
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Target=System.out
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
# Settings About FileOutput
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./resources/log/logging.log
log4j.appender.file.MaxFileSize=10mb
log4j.appender.file.Threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p][%d{yy-MM-dd}][%c]%m%n
# LogOutput Level
log4j.logger.org.mybatis=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG