spring3.2.2+jpa整合 如何配置多个持久化单元 - java报错

//PersistenceUnitPostProcessor实现类,用于修改PersistenceUnitManager读取到的各个对应persistence.xml产生的PersistenceUnitInfo

package com.iwt.common.persist.jpa;  
  
import java.util.ArrayList;  
import java.util.HashMap;  
import java.util.List;  
import java.util.Map;  
  
import org.springframework.orm.jpa.persistenceunit.MutablePersistenceUnitInfo;  
import org.springframework.orm.jpa.persistenceunit.PersistenceUnitPostProcessor;  
  
import com.iwt.common.util.CommonUtil;  
  
/** 
 * 合并多个JAR中的JPA实体到一个持久化单元 
 * <p> 
 * This merges all JPA entities from multiple jars. To use it, all entities must be listed in their respective 
 * persistence.xml files using the <class> tag. 
 *  
 * @see http://forum.springsource.org/showthread.php?t=61763 a 
 * @see http://javathoughts.capesugarbird.com/2009/02/jpa-and-multiple-persistence -units.html b 
 */  
public class MergingPersistenceUnitPostProcessor implements PersistenceUnitPostProcessor {  
    Map<String, List<String>> puiClasses = new HashMap<String, List<String>>();  
  
    String persistenceUnitName; //最终返回的持久化单元名字  
    List<String> includePersistenceUnitNames; //需要过滤的持久化单元名称列表  
  
    public MergingPersistenceUnitPostProcessor() {}  
  
    public void postProcessPersistenceUnitInfo(MutablePersistenceUnitInfo pui) {  
  
        String pun = pui.getPersistenceUnitName();  
        System.out.println(pun);  
        if(!includePersistenceUnitNames.contains(pun)) {  
            pui.getManagedClassNames().clear();  
        }  
          
        List<String> classes = puiClasses.get(pun);  
        if (classes == null) {  
            classes = new ArrayList<String>();  
            puiClasses.put(pun, classes);  
        }  
  
        for (List<String> subClasses : puiClasses.values()) {  
            pui.getManagedClassNames().addAll(subClasses);  
        }  
  
        final List<String> names = pui.getManagedClassNames();  
        classes.addAll(names);  
        pui.setPersistenceUnitName(persistenceUnitName);  
          
          
        System.out.println("---------------------------------------------------------------");  
        System.out.println(pui);  
        for (String cn : names) {  
            System.out.println(cn);  
        }  
        System.out.println("---------------------------------------------------------------");  
    }  
  
    public void scanEntity() {}  
  
    //--------------------------------------------set-----------------------------------------------  
    public void setIncludePersistenceUnitNames(List<String> includePersistenceUnitNames) {  
        CommonUtil.checkArgument(includePersistenceUnitNames == null || includePersistenceUnitNames.isEmpty(), "需要合并的持久化单元名称列表不能为空！");  
        this.includePersistenceUnitNames = includePersistenceUnitNames;  
    }  
  
    public void setPersistenceUnitName(String persistenceUnitName) {  
        CommonUtil.checkArgument(persistenceUnitName == null || persistenceUnitName.isEmpty(), "合并后的持久化单元名称不能为空！");  
        this.persistenceUnitName = persistenceUnitName;  
    }  
}  

配置方法：

Java代码  收藏代码
<bean id=" persistenceUnitPostProcessor "  
    class="com.iwt.common.persist.jpa.MergingPersistenceUnitPostProcessor">  
    <!--需要合并的持久化单元名称列表,不能为空 -->  
    <property name="includePersistenceUnitNames">  
        <list value-type="java.lang.String" >  
            <value>huskyPU</value>  
            <value>huicardPU</value>  
            <value>huimerchantPU</value>  
            <value>taskCenterPU</value>  
        </list>  
    </property>  
<!-- 最终返回的持久化单元名字,不能为空且需要与 entityManagerFactory的persistenceUnitName相同-->  
    <property name="persistenceUnitName" value="hui10PU" />  
</bean>     
      
  
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">  
    <property name="dataSource" ref="dataSource"/>  
    <property name="persistenceUnitName" value="hui10PU" />  
    <property name="jpaVendorAdapter">  
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">  
            <property name="showSql" value="false" />  
        </bean>  
    </property>  
<!-- Callback interface for post-processing a JPA PersistenceUnitInterface -->  
        <property name="persistenceUnitPostProcessors" ref="persistenceUnitPostProcessor"/>  
</bean>