我在broadleaf工作，这是基于spring-mvc。
基于项目模块，在不同的xml文件中有3-4个blCustomPersistenceHandlers bean定义。
<bean id="blCustomPersistenceHandlers" class="org.springframework.beans.factory.config.ListFactoryBean" scope="prototype">
<property name="sourceList">
<list>
<bean class="org.broadleafcommerce.admin.server.service.handler.CategoryCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.admin.server.service.handler.CustomerPasswordCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.openadmin.server.security.handler.AdminUserCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.admin.server.service.handler.CustomerCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.admin.server.service.handler.ProductCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.admin.server.service.handler.ChildCategoriesCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.admin.server.service.handler.SkuCustomPersistenceHandler"/>
</list>
</property>
</bean>
下面的不同xml文件
<bean id="blCustomPersistenceHandlers" class="org.springframework.beans.factory.config.ListFactoryBean" scope="prototype">
<property name="sourceList">
<list>
<bean class="org.broadleafcommerce.cms.admin.server.handler.PageTemplateCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.cms.admin.server.handler.StructuredContentTypeCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.cms.admin.server.handler.SandBoxItemCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.cms.admin.server.handler.PendingSandBoxItemCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.cms.admin.server.handler.TimeDTOCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.cms.admin.server.handler.RequestDTOCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.cms.admin.server.handler.StructuredContentItemCriteriaCustomPersistenceHandler"/>
<bean class="org.broadleafcommerce.cms.admin.server.handler.PageItemCriteriaCustomPersistenceHandler"/>
</list>
</property>
</bean>
以上定义驻留在我们包含的jar文件中。 现在我想替换其中一个处理程序，例如ProductCustomPersistenceHandler，
我需要更改有关该处理程序的一些功能，所以我在xml文件中更改了下面的处理程序。
<bean id="org.broadleafcommerce.admin.server.service.handler.ProductCustomPersistenceHandler"
class="com.mycompany.server.service.handler.HCProductCustomPersistenceHandler" />
并将bean defination放入xml文件
<bean id="blCustomPersistenceHandlers" class="org.springframework.beans.factory.config.ListFactoryBean"> <!-- scope="prototype" -->
<property name="sourceList">
<list>
<bean class="com.mycompany.server.service.handler.HCProductCustomPersistenceHandler"/>
</list>
</property>
</bean>
ProductCustomPersistenceHandler类
public class ProductCustomPersistenceHandler extends CustomPersistenceHandlerAdapter {
@Resource(name = "blCatalogService")
protected CatalogService catalogService;
private static final Log LOG = LogFactory.getLog(ProductCustomPersistenceHandler.class);
@Override
public Boolean canHandleAdd(PersistencePackage persistencePackage) {
String ceilingEntityFullyQualifiedClassname = persistencePackage.getCeilingEntityFullyQualifiedClassname();
String[] customCriteria = persistencePackage.getCustomCriteria();
return !ArrayUtils.isEmpty(customCriteria) && "productDirectEdit".equals(customCriteria[0]) && Product.class.getName().equals(ceilingEntityFullyQualifiedClassname);
}
@Override
public Boolean canHandleUpdate(PersistencePackage persistencePackage) {
return canHandleAdd(persistencePackage);
}
@Override
public Entity add(PersistencePackage persistencePackage, DynamicEntityDao dynamicEntityDao, RecordHelper helper) throws ServiceException {
Entity entity = persistencePackage.getEntity();
try {
PersistencePerspective persistencePerspective = persistencePackage.getPersistencePerspective();
Product adminInstance = (Product) Class.forName(entity.getType()[0]).newInstance();
Map<String, FieldMetadata> adminProperties = helper.getSimpleMergedProperties(Product.class.getName(), persistencePerspective);
adminInstance = (Product) helper.createPopulatedInstance(adminInstance, entity, adminProperties, false);
adminInstance = (Product) dynamicEntityDao.merge(adminInstance);
CategoryProductXref categoryXref = new CategoryProductXrefImpl();
categoryXref.setCategory(adminInstance.getDefaultCategory());
categoryXref.setProduct(adminInstance);
if (adminInstance.getDefaultCategory() != null && !adminInstance.getAllParentCategoryXrefs().contains(categoryXref)) {
categoryXref = (CategoryProductXref) dynamicEntityDao.merge(categoryXref);
adminInstance.getAllParentCategoryXrefs().add(categoryXref);
}
//Since none of the Sku fields are required, it's possible that the user did not fill out
//any Sku fields, and thus a Sku would not be created. Product still needs a default Sku so instantiate one
if (adminInstance.getDefaultSku() == null) {
Sku newSku = catalogService.createSku();
adminInstance.setDefaultSku(newSku);
adminInstance = (Product) dynamicEntityDao.merge(adminInstance);
}
//also set the default product for the Sku
adminInstance.getDefaultSku().setDefaultProduct(adminInstance);
dynamicEntityDao.merge(adminInstance.getDefaultSku());
return helper.getRecord(adminProperties, adminInstance, null, null);
} catch (Exception e) {
LOG.error("Unable to add entity for " + entity.getType()[0], e);
throw new ServiceException("Unable to add entity for " + entity.getType()[0], e);
}
}
@Override
public Entity update(PersistencePackage persistencePackage, DynamicEntityDao dynamicEntityDao, RecordHelper helper) throws ServiceException {
Entity entity = persistencePackage.getEntity();
try {
PersistencePerspective persistencePerspective = persistencePackage.getPersistencePerspective();
Map<String, FieldMetadata> adminProperties = helper.getSimpleMergedProperties(Product.class.getName(), persistencePerspective);
Object primaryKey = helper.getPrimaryKey(entity, adminProperties);
Product adminInstance = (Product) dynamicEntityDao.retrieve(Class.forName(entity.getType()[0]), primaryKey);
adminInstance = (Product) helper.createPopulatedInstance(adminInstance, entity, adminProperties, false);
adminInstance = (Product) dynamicEntityDao.merge(adminInstance);
CategoryProductXref categoryXref = new CategoryProductXrefImpl();
categoryXref.setCategory(adminInstance.getDefaultCategory());
categoryXref.setProduct(adminInstance);
if (adminInstance.getDefaultCategory() != null && !adminInstance.getAllParentCategoryXrefs().contains(categoryXref)) {
adminInstance.getAllParentCategoryXrefs().add(categoryXref);
}
return helper.getRecord(adminProperties, adminInstance, null, null);
} catch (Exception e) {
LOG.error("Unable to update entity for " + entity.getType()[0], e);
throw new ServiceException("Unable to update entity for " + entity.getType()[0], e);
}
}
}
我只是扩展这个处理程序并创建我的新处理程序，因为它只运行核心处理程序正在执行，我想执行我的处理程序。
但这不起作用。 我不能改成核心部分，所以我只需要用我的处理程序替换处理程序。 我怎样才能做到这一点？ 这可能在春天吗？
答案 0 :(得分：3)
具体来说，对于自定义持久性处理程序，可以使用blCustomPersistenceHandlerFilters bean删除核心处理程序。所以在你的情况下你会像这样定义你的bean：
<bean id="blCustomPersistenceHandlerFilters" class="org.springframework.beans.factory.config.ListFactoryBean" scope="prototype">
<property name="sourceList">
<list>
<bean class="org.broadleafcommerce.openadmin.server.service.handler.DefaultCustomPersistenceHandlerFilter">
<property name="filterCustomPersistenceHandlerClassnames">
<list>
<value>org.broadleafcommerce.admin.server.service.handler.ProductCustomPersistenceHandler</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
然后您可以像以前一样将自己的CPH添加到列表中：
<bean id="blCustomPersistenceHandlers" class="org.springframework.beans.factory.config.ListFactoryBean"> <!-- scope="prototype" -->
<property name="sourceList">
<list>
<bean class="com.mycompany.server.service.handler.HCProductCustomPersistenceHandler"/>
</list>
</property>
</bean>
现在，BLC产品自定义持久性处理程序将无法运行，但您的将会运行。
这可能有点过于复杂，只是为了您想要用自定义的替换开箱即用的简单目的。我们之所以这样做是有充分理由的，但我添加了GitHub Issue来进一步调查。