spring boot + hibernate 多数据源（注解方式）

一）spring boot + hibernate 多数据源（XML）

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ImportResource;

@SpringBootApplication
@EnableAutoConfiguration(exclude = { DataSourceAutoConfiguration.class })
@ComponentScan(basePackages = "com.opentrans.kit")
@ImportResource({ "classpath:META-INF/spring/applicationContext.xml" })
public class KitApplication extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(KitApplication.class, args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(KitApplication.class);
    }
}

二） properties 配置

## DB properties:
spring.datasource.kit.url=jdbc:postgresql://localhost:5432/kit
spring.datasource.kit.username=jetty
spring.datasource.kit.password=jetty
spring.datasource.kit.driver-class-name=org.postgresql.Driver
spring.datasource.kit.initial-size=10
spring.datasource.kit.min-idle=10
spring.datasource.kit.max-active=100


## DB otmsxtt
spring.datasource.xtt.url=jdbc:postgresql://192.168.3.74:5432/otmsxtt2k
spring.datasource.xtt.username=jetty
spring.datasource.xtt.password=jetty
spring.datasource.xtt.driver-class-name=org.postgresql.Driver
spring.datasource.xtt.initial-size=5
spring.datasource.xtt.min-idle=10
spring.datasource.xtt.max-active=100

## JPA Configuration:
spring.jpa.show-sql=true
## Spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=none
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect

## log4j
logging.config=classpath:log4j2.xml

三）注解式数据源配置

1. 数据源配置类 DataSourceConfigration.java ，多数据源时必须指定一个数据源首选项注解@Primary（prefix对应properties数据库配置的前缀）

import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import javax.sql.DataSource;

@Configuration
public class DataSourceConfigration {

    @Primary
    @Bean(name = "dataSourceKit")
    @ConfigurationProperties(prefix = "spring.datasource.kit")
    public DataSource dataSourceKit() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "dataSourceOtms")
    @ConfigurationProperties(prefix = "spring.datasource.otms")
    public DataSource dataSourceOtms() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "dataSourceXtt")
    @ConfigurationProperties(prefix = "spring.datasource.xtt")
    public DataSource dataSourceXtt() {
        return DataSourceBuilder.create().build();
    }
}

2. 数据库A的配置类 KitDefine.java

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;
import java.util.Map;

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactoryKit",
        transactionManagerRef = "transactionManagerKit",
        basePackages = {"com.opentrans.kit.jpa.kit.repository" })
public class KitDefine {

    @Autowired
    private JpaProperties jpaProperties;

    @Autowired
    @Qualifier("dataSourceKit")
    private DataSource dataSourceKit;

    @Primary
    @Bean(name = "entityManagerFactoryKit")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryKit(EntityManagerFactoryBuilder builder) {
        LocalContainerEntityManagerFactoryBean em = builder.dataSource(dataSourceKit)
                .properties(getVendorProperties(dataSourceKit))
                .packages("com.opentrans.kit.jpa.kit.entity")
                .persistenceUnit("kitPersistenceUnit").build();
        return em;
    }

    @Primary
    @Bean(name = "transactionManagerKit")
    PlatformTransactionManager transactionManagerKit(EntityManagerFactoryBuilder builder) {
        return new JpaTransactionManager(entityManagerFactoryKit(builder).getObject());
    }

    private Map<String, String> getVendorProperties(DataSource dataSource) {
        return jpaProperties.getHibernateProperties(dataSource);
    }
}

3. 数据库B配置类 OtmsXttDefine.java

import java.util.Map;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
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.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactoryXtt",
        transactionManagerRef = "transactionManagerXtt",
        basePackages = {"com.opentrans.kit.jpa.xtt.repository" })
public class OtmsXttDefine {

    @Autowired
    private JpaProperties jpaProperties;

    @Autowired
    @Qualifier("dataSourceXtt")
    private DataSource dataSourceXtt;

    @Bean(name = "entityManagerFactoryXtt")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryXtt(EntityManagerFactoryBuilder builder) {
        LocalContainerEntityManagerFactoryBean em = builder.dataSource(dataSourceXtt)
                .properties(getVendorProperties(dataSourceXtt))
                .packages("com.opentrans.kit.jpa.xtt.entity")
                .persistenceUnit("XttPersistenceUnit").build();
        return em;
    }

    @Bean(name = "transactionManagerXtt")
    PlatformTransactionManager transactionManagerXtt(EntityManagerFactoryBuilder builder) {
        return new JpaTransactionManager(entityManagerFactoryXtt(builder).getObject());
    }

    private Map<String, String> getVendorProperties(DataSource dataSource) {
        return jpaProperties.getHibernateProperties(dataSource);
    }
}

四）pom.xml - maven

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.otms.field</groupId>
    <artifactId>toolkit</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>toolkit</name>
    <description>Team field engineering toolkit</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
        <relativePath/>
    </parent>

    <properties>
        <postgres.version>8.4-702.jdbc4</postgres.version>
        <fastjson.version>1.2.16</fastjson.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-websocket</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
   <!--     <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-websocket</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.6</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
        </dependency>
        <dependency>
            <groupId>postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>${postgres.version}</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>${fastjson.version}</version>
        </dependency>
    </dependencies>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

spring boot + hibernate 多数据源（注解方式）

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