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Spring + Hibernate + JPAを使用した複数のデータベース

2つのデータベース（MySQLとMSSQL）で動作するようにSpring + Hibernate + JPAを構成しようとしています。

私のdatasource-context.xml：

<?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:aop="http://www.springframework.org/schema/aop"
 xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
  http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
  http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
  http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd"
 xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"
 xmlns:util="http://www.springframework.org/schema/util">

 <!--
 Data Source config 
  -->
 <bean id="dataSource" class="org.Apache.commons.dbcp.BasicDataSource"
  destroy-method="close" p:driverClassName="${local.jdbc.driver}" p:url="${local.jdbc.url}"
  p:username="${local.jdbc.username}" p:password="${local.jdbc.password}">
 </bean>

 <bean id="dataSourceRemote" class="org.Apache.commons.dbcp.BasicDataSource"
  destroy-method="close" p:driverClassName="${remote.jdbc.driver}"
  p:url="${remote.jdbc.url}" p:username="${remote.jdbc.username}"
  p:password="${remote.jdbc.password}" />

 <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
  p:entity-manager-factory-ref="entityManagerFactory" />

 <!-- 
    JPA config   
    -->
 <tx:annotation-driven transaction-manager="transactionManager" />

 <bean id="persistenceUnitManager"
  class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
        <property name="persistenceXmlLocations">
   <list value-type="Java.lang.String">
    <value>classpath*:config/persistence.local.xml</value>
    <value>classpath*:config/persistence.remote.xml</value>
   </list>
  </property>

  <property name="dataSources">
   <map>
    <entry key="localDataSource" value-ref="dataSource" />
    <entry key="remoteDataSource" value-ref="dataSourceRemote" />
   </map>
  </property>
  <property name="defaultDataSource" ref="dataSource" />
 </bean>

 <bean id="entityManagerFactory"
  class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
  <property name="jpaVendorAdapter">
   <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
    p:showSql="true" p:generateDdl="true">
   </bean>
  </property>
  <property name="persistenceUnitManager" ref="persistenceUnitManager" />
<property name="persistenceUnitName" value="localjpa"/>
 </bean>

 <bean
  class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

</beans>

各persistence.xmlには、次のように1つのユニットが含まれています。

<persistence-unit name="remote" transaction-type="RESOURCE_LOCAL">
  <properties>
   <property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
   <property name="hibernate.dialect" value="${remote.hibernate.dialect}" />
   <property name="hibernate.hbm2ddl.auto" value="${remote.hibernate.hbm2ddl.auto}" />
  </properties>
 </persistence-unit>

PersistenceUnitManagerは、次の例外を引き起こします。

Beanプロパティ「persistenceUnitManager」の設定中に、Bean「persistenceUnitManager」への参照を解決できません。ネストされた例外はorg.springframework.beans.factory.BeanCreationException：クラスパスリソース[config/datasource-context.xml]で定義された 'persistenceUnitManager'という名前のBeanの作成エラー：Beanの初期化に失敗しました。ネストされた例外はorg.springframework.beans.TypeMismatchExceptionです。プロパティ[persistenceXmlLocation]のタイプ[Java.util.ArrayList]のプロパティ値を必要なタイプ[Java.lang.String]に変換できませんでした。ネストされた例外はJava.lang.IllegalArgumentException：プロパティ 'persistenceXmlLocation'のタイプ[Java.util.ArrayList]の値を必要なタイプ[Java.lang.String]に変換できません：一致するエディターまたは変換戦略が見つかりません

リストなしでpersistence.xmlを1つだけ残した場合、すべて正常に動作しますが、2ユニットが必要です...

また、Spring + Hibernateコンテキストで2つのデータベースを操作するための代替ソリューションを見つけようとしているので、どのソリューションでも感謝します。

persistenceXmlLocationsに変更した後の新しいエラー：

{classpath：config/persistence.local.xml、classpath：config/persistence.remote.xml}で定義された単一のデフォルト永続性ユニットはありません

更新：

PersistenceUnitNameを追加しますが、機能しますが、1つのユニットでのみ、まだ助けが必要です。

更新：

構成ファイルを変更しました：datasource-context.xml

<?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:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd"
    xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:util="http://www.springframework.org/schema/util">

    <bean id="dataSource" class="org.Apache.commons.dbcp.BasicDataSource"
        destroy-method="close" p:driverClassName="${local.jdbc.driver}" p:url="${local.jdbc.url}"
        p:username="${local.jdbc.username}" p:password="${local.jdbc.password}">
    </bean>

    <bean id="dataSourceRemote" class="org.Apache.commons.dbcp.BasicDataSource"
        destroy-method="close" p:driverClassName="${remote.jdbc.driver}"
        p:url="${remote.jdbc.url}" p:username="${remote.jdbc.username}"
        p:password="${remote.jdbc.password}">
    </bean>

    <bean
        class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor">
        <property name="defaultPersistenceUnitName" value="pu1" />
    </bean>

    <bean id="persistenceUnitManager"
        class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
        <property name="persistenceXmlLocation" value="${persistence.xml.location}" />
        <property name="defaultDataSource" ref="dataSource" /> <!-- problem -->
        <property name="dataSources">
            <map>
                <entry key="local" value-ref="dataSource" />
                <entry key="remote" value-ref="dataSourceRemote" />
            </map>
        </property>
    </bean>

    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
                p:showSql="true" p:generateDdl="true">
            </bean>
        </property>
        <property name="persistenceUnitManager" ref="persistenceUnitManager" />
        <property name="persistenceUnitName" value="pu1" />
        <property name="dataSource" ref="dataSource" />
    </bean>

    <bean id="entityManagerFactoryRemote"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"
                p:showSql="true" p:generateDdl="true">
            </bean>
        </property>
        <property name="persistenceUnitManager" ref="persistenceUnitManager" />
        <property name="persistenceUnitName" value="pu2" />
        <property name="dataSource" ref="dataSourceRemote" />
    </bean>

    <tx:annotation-driven />

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
        p:entity-manager-factory-ref="entityManagerFactory" />


    <bean id="transactionManagerRemote" class="org.springframework.orm.jpa.JpaTransactionManager"
        p:entity-manager-factory-ref="entityManagerFactoryRemote" />

</beans>

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://Java.Sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://Java.Sun.com/xml/ns/persistence
                 http://Java.Sun.com/xml/ns/persistence/persistence_1_0.xsd"
    version="1.0">

    <persistence-unit name="pu1" transaction-type="RESOURCE_LOCAL">
        <properties>
            <property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
            <property name="hibernate.dialect" value="${local.hibernate.dialect}" />
            <property name="hibernate.hbm2ddl.auto" value="${local.hibernate.hbm2ddl.auto}" />                          
        </properties>
    </persistence-unit>

    <persistence-unit name="pu2" transaction-type="RESOURCE_LOCAL">
        <properties>
            <property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.DefaultNamingStrategy" />
            <property name="hibernate.dialect" value="${remote.hibernate.dialect}" />
            <property name="hibernate.hbm2ddl.auto" value="${remote.hibernate.hbm2ddl.auto}" />
        </properties>
    </persistence-unit>

</persistence>

現在、2つのentityManagerFactoryを構築していますが、両方ともMicrosoft SQL Server用です

[main] INFO org.hibernate.ejb.Ejb3Configuration - Processing PersistenceUnitInfo [
    name: pu1
    ...]
[main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: Microsoft SQL Server

[main] INFO org.hibernate.ejb.Ejb3Configuration - Processing PersistenceUnitInfo [
    name: pu2
    ...]
[main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: Microsoft SQL Server (but must MySQL)

DataSourceのみを使用し、dataSourceRemote（置換なし）は機能しないことをお勧めします。それが私の最後の問題です。

javaspringhibernatejpamulti-database
30
ziftech

persistenceXmlLocationsではなく、persistenceXmlLocationプロパティ（複数形に注意）を使用する必要があります。これは文字列配列であるため、リストから自動変換されます。

<bean id="persistenceUnitManager"
      class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
  <property name="persistenceXmlLocations"><list>
    <value>classpath*:config/persistence.local.xml</value>
    <value>classpath*:config/persistence.remote.xml</value>
  </list></property>
  ...

更新（編集に基づく）

entityManagerFactoryはpersistenceUnitNameプロパティを指定していません。複数の永続性ユニットを定義しており、entityManagerFactoryはどのユニットを使用するかを知っている必要があるため、明示的に行う必要があります。

15
ChssPly76

ジャスティン、3番は次のようなより標準的な方法で行うことができます：

  1. Springコンテキストで：

    <context:annotation-config />

  2. Spring管理のDAOで（unitNameプロパティに注意してください）：

    @PersistenceContext(unitName = "pu1"`) protected EntityManager entityManager;

このようにして、「pu1」という名前の永続性ユニットに対応する適切にインスタンス化されたEntityManagerが、対応するDAOに挿入されます。

8
Cristian Ebbens

このチュートリアルに従うと、 http://www.javacodegeeks.com/2010/05/jboss-42x-spring-3-jpa-hibernate.html 次の変更を行って2つの異なるアクセスすることができますデータベース：

  1. persistence.xmlで、2番目のデータベースの2番目のpesristence-unitを定義します。
  2. spring.xml、別の名前で2番目のentityManagerFactory Beanを定義し、「entityManagerFactoryDB2」と言い、2番目のデータベースに永続ユニットを使用するように設定します。

  3. 2番目のデータベースにアクセスするすべてのDAOには、次のものが含まれます。

    @Autowired
private EntityManagerFactory entityManagerFactoryDB2;

@PostConstruct
public void init() {
    super.setEntityManagerFactory(entityManagerFactoryDB2);
}

それで全部です！

春のサービスクラスでは、通常どおりDAOを使用します。

6
Justin Cater

この方法で問題を解決しました（springとHibernateを使用して複数のデータベースを接続する方法）、それが役立つことを願っています:) 注：私は関連するコードを追加しました、親切にdaoを作ります下記のコードで使用したimplの助けを借りて）

**web.xml**

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://Java.Sun.com/xml/ns/javaee" xmlns:web="http://Java.Sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://Java.Sun.com/xml/ns/javaee http://Java.Sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <display-name>MultipleDatabaseConnectivityInSpring</display-name>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
     <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <load-on-startup>1</load-on-startup>
    </servlet>
     <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener> 
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/dispatcher-servlet.xml
        </param-value>
    </context-param>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>
</web-app>


**persistence.xml**


<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0"
    xmlns="http://Java.Sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://Java.Sun.com/xml/ns/persistence http://Java.Sun.com/xml/ns/persistence/persistence_1_0.xsd">
    <persistence-unit name="localPersistenceUnitOne"
        transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>in.india.entities.CustomerDetails</class>
        <exclude-unlisted-classes />
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
            <property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
            <property name="hibernate.jdbc.batch_size" value="0" />
            <property name="hibernate.show_sql" value="false" />
            <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/shankar?sslmode=require" />
            <property name="hibernate.connection.username" value="username" />
            <property name="hibernate.connection.password" value="password" />
            <property name="hibernate.hbm2ddl.auto" value="update" />
        </properties>
    </persistence-unit>
    <persistence-unit name="localPersistenceUnitTwo"
        transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>in.india.entities.CompanyDetails</class>
        <exclude-unlisted-classes />
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
            <property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
            <property name="hibernate.jdbc.batch_size" value="0" />
            <property name="hibernate.show_sql" value="false" />
            <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/shankarTwo?sslmode=require" />
            <property name="hibernate.connection.username" value="username" />
            <property name="hibernate.connection.password" value="password" />
            <property name="hibernate.hbm2ddl.auto" value="update" />
        </properties>
    </persistence-unit>
</persistence>


**dispatcher-servlet**


<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:task="http://www.springframework.org/schema/task" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:util="http://www.springframework.org/schema/util"
    default-autowire="byName"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd  
      http://www.springframework.org/schema/aop  http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/mvc 
      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
    <!-- Configure messageSource -->

    <mvc:annotation-driven />
    <context:component-scan base-package="in.india.*" />
    <bean id="messageResource"
        class="org.springframework.context.support.ResourceBundleMessageSource"
        autowire="byName">
        <property name="basename" value="messageResource"></property>
    </bean>

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/jsp/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>



    <bean id="entityManagerFactoryOne"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
        autowire="constructor">
        <property name="persistenceUnitName" value="localPersistenceUnitOne" />
    </bean>

    <bean id="messageSource"
        class="org.springframework.context.support.ResourceBundleMessageSource"
        autowire="byName">
        <property name="basename" value="messageResource" />
    </bean>

    <bean id="entityManagerFactoryTwo"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
        autowire="constructor">
        <property name="persistenceUnitName" value="localPersistenceUnitTwo" />
    </bean>

    <bean id="manager1" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactoryOne" />
    </bean>

    <bean id="manager2" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactoryTwo" />
    </bean>

    <tx:annotation-driven transaction-manager="manager1" />
    <tx:annotation-driven transaction-manager="manager2" />

    <!-- declare dependies here -->

    <bean class="in.india.service.dao.impl.CustomerServiceImpl" />
    <bean class="in.india.service.dao.impl.CompanyServiceImpl" />

    <!-- Configure MVC annotations -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
    <bean
        class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
</beans>



**Java class to persist into one database**


package in.india.service.dao.impl;

import in.india.entities.CompanyDetails;
import in.india.service.CompanyService;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.springframework.transaction.annotation.Transactional;

public class CompanyServiceImpl implements CompanyService {

    @PersistenceContext(unitName = "entityManagerFactoryTwo")
    EntityManager entityManager;

    @Transactional("manager2")
    @Override
    public boolean companyService(CompanyDetails companyDetails) {

        boolean flag = false;
        try 
        {
            entityManager.persist(companyDetails);
            flag = true;
        } 
        catch (Exception e)
        {
            flag = false;
        }

        return flag;
    }

}


**Java class to persist in another database** 

package in.india.service.dao.impl;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.springframework.transaction.annotation.Transactional;

import in.india.entities.CustomerDetails;
import in.india.service.CustomerService;

public class CustomerServiceImpl implements CustomerService {

    @PersistenceContext(unitName = "localPersistenceUnitOne")
    EntityManager entityManager;

    @Override
    @Transactional(value = "manager1")
    public boolean customerService(CustomerDetails companyData) {

        boolean flag = false;
        entityManager.persist(companyData);
        return flag;
    }
}


**customer.jsp**

<%@page language="Java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
    <center>
        <h1>SpringWithMultipleDatabase's</h1>
    </center>
    <form:form method="GET" action="addCustomer.htm"  modelAttribute="customerBean" >
        <table>
            <tr>
                <td><form:label path="firstName">First Name</form:label></td>
                <td><form:input path="firstName" /></td>
            </tr>
            <tr>
                <td><form:label path="lastName">Last Name</form:label></td>
                <td><form:input path="lastName" /></td>
            </tr>
            <tr>
                <td><form:label path="emailId">Email Id</form:label></td>
                <td><form:input path="emailId" /></td>
            </tr>
            <tr>
                <td><form:label path="profession">Profession</form:label></td>
                <td><form:input path="profession" /></td>
            </tr>
            <tr>
                <td><form:label path="address">Address</form:label></td>
                <td><form:input path="address" /></td>
            </tr>
            <tr>
                <td><form:label path="age">Age</form:label></td>
                <td><form:input path="age" /></td>
            </tr>
            <tr>
                <td><input type="submit" value="Submit"/></td>
             </tr>
        </table>
    </form:form>
</body>
</html>


**company.jsp**


<%@ page language="Java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>ScheduleJobs</title>
</head>
<body>
 <center><h1>SpringWithMultipleDatabase's</h1></center>
 <form:form method="GET" action="addCompany.htm"  modelAttribute="companyBean" >
 <table>
    <tr>
        <td><form:label path="companyName">Company Name</form:label></td>
        <td><form:input path="companyName" /></td>
    </tr>
    <tr>
        <td><form:label path="companyStrength">Company Strength</form:label></td>
        <td><form:input path="companyStrength" /></td>
    </tr>
    <tr>
        <td><form:label path="companyLocation">Company Location</form:label></td>
        <td><form:input path="companyLocation" /></td>
    </tr>
     <tr>
        <td>
            <input type="submit" value="Submit"/>
        </td>
    </tr>
 </table>
 </form:form>
</body>
</html>

**index.jsp**

<%@ page language="Java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Home</title>
</head>
<body>
 <center><h1>Multiple Database Connectivity In Spring sdfsdsd</h1></center>

<a href='customerRequest.htm'>Click here to go on Customer page</a>
<br>
<a href='companyRequest.htm'>Click here to go on Company page</a>
</body>
</html>

**success.jsp**

<%@ page language="Java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>ScheduleJobs</title>
</head>
<body>
 <center><h1>SpringWithMultipleDatabase</h1></center>
    <b>Successfully Saved</b>
</body>
</html>

**CompanyController**

package in.india.controller;

import in.india.bean.CompanyBean;
import in.india.entities.CompanyDetails;
import in.india.service.CompanyService;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class CompanyController {

    @Autowired
    CompanyService companyService;

    @RequestMapping(value = "/companyRequest.htm", method = RequestMethod.GET)
    public ModelAndView addStudent(ModelMap model) {
        CompanyBean companyBean = new CompanyBean();
        model.addAttribute(companyBean);
        return new ModelAndView("company");
    }

    @RequestMapping(value = "/addCompany.htm", method = RequestMethod.GET)
    public ModelAndView companyController(@ModelAttribute("companyBean") CompanyBean companyBean, Model model) {
        CompanyDetails  companyDetails = new CompanyDetails();
        companyDetails.setCompanyLocation(companyBean.getCompanyLocation());
        companyDetails.setCompanyName(companyBean.getCompanyName());
        companyDetails.setCompanyStrength(companyBean.getCompanyStrength());
        companyService.companyService(companyDetails);
        return new ModelAndView("success");

    }
}

**CustomerController**


package in.india.controller;

import in.india.bean.CustomerBean;
import in.india.entities.CustomerDetails;
import in.india.service.CustomerService;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class CustomerController {

    @Autowired
    CustomerService customerService;

    @RequestMapping(value = "/customerRequest.htm", method = RequestMethod.GET)
    public ModelAndView addStudent(ModelMap model) {
        CustomerBean customerBean = new CustomerBean();
        model.addAttribute(customerBean);
        return new ModelAndView("customer");
    }

    @RequestMapping(value = "/addCustomer.htm", method = RequestMethod.GET)
    public ModelAndView customerController(@ModelAttribute("customerBean") CustomerBean customer, Model model) {
        CustomerDetails customerDetails = new CustomerDetails();
        customerDetails.setAddress(customer.getAddress());
        customerDetails.setAge(customer.getAge());
        customerDetails.setEmailId(customer.getEmailId());
        customerDetails.setFirstName(customer.getFirstName());
        customerDetails.setLastName(customer.getLastName());
        customerDetails.setProfession(customer.getProfession());
        customerService.customerService(customerDetails);
        return new ModelAndView("success");

    }
}


**CompanyDetails Entity**


package in.india.entities;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;

@Entity
@Table(name = "company_details")
public class CompanyDetails {

    @Id
    @SequenceGenerator(name = "company_details_seq", sequenceName = "company_details_seq", initialValue = 1, allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "company_details_seq")
    @Column(name = "company_details_id")
    private Long companyDetailsId;
    @Column(name = "company_name")
    private String companyName;
    @Column(name = "company_strength")
    private Long companyStrength;
    @Column(name = "company_location")
    private String companyLocation;

    public Long getCompanyDetailsId() {
        return companyDetailsId;
    }

    public void setCompanyDetailsId(Long companyDetailsId) {
        this.companyDetailsId = companyDetailsId;
    }

    public String getCompanyName() {
        return companyName;
    }

    public void setCompanyName(String companyName) {
        this.companyName = companyName;
    }

    public Long getCompanyStrength() {
        return companyStrength;
    }

    public void setCompanyStrength(Long companyStrength) {
        this.companyStrength = companyStrength;
    }

    public String getCompanyLocation() {
        return companyLocation;
    }

    public void setCompanyLocation(String companyLocation) {
        this.companyLocation = companyLocation;
    }
}


**CustomerDetails Entity**

package in.india.entities;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;

@Entity
@Table(name = "customer_details")
public class CustomerDetails {

    @Id
    @SequenceGenerator(name = "customer_details_seq", sequenceName = "customer_details_seq", initialValue = 1, allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "customer_details_seq")
    @Column(name = "customer_details_id")
    private Long customerDetailsId;
    @Column(name = "first_name ")
    private String firstName;
    @Column(name = "last_name ")
    private String lastName;
    @Column(name = "email_id")
    private String emailId;
    @Column(name = "profession")
    private String profession;
    @Column(name = "address")
    private String address;
    @Column(name = "age")
    private int age;
    public Long getCustomerDetailsId() {
        return customerDetailsId;
    }

    public void setCustomerDetailsId(Long customerDetailsId) {
        this.customerDetailsId = customerDetailsId;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmailId() {
        return emailId;
    }

    public void setEmailId(String emailId) {
        this.emailId = emailId;
    }

    public String getProfession() {
        return profession;
    }

    public void setProfession(String profession) {
        this.profession = profession;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}
1
Shankar Saran Singh

設定方法の詳細については、このWikiページ http://code.google.com/p/gwt-spring-jpa-lucene/wiki/PersistenceUnitSetup を確認してください。 persistenceXmlLocationsとDAOの注釈で春

0
Giulio Roggero
  1. すべての永続性ユニットに対応する複数のentityManagerFactoryを作成します。
  2. @PersistenceContextのunitNameプロパティを指定します

それらが挿入されるentityManagerFactoriesを切り替えます

0
Amol Dixit