当我尝试使用servicebuilder构建liferay服务时出现空指针异常

发布于 2024-12-23 04:38:58 字数 1306 浏览 3 评论 0原文

我有一个“ECLocalDataService.java”类。我正在尝试将其构建为 liferay 本地服务，以便我可以使用 ServiceLocator.findService() 从所有 portlet 和速度模板访问它。

我的 ECLocalDataService 有点像这样：

public interface ECDataLocalService {

    public java.lang.String getBeanIdentifier();


    public void setBeanIdentifier(java.lang.String beanIdentifier);

    @Transactional(propagation = Propagation.SUPPORTS, readOnly = true)
    public float getPriceBySKU(java.lang.String sku);
}

它的实现类是这样的：

import com.rosettastone.service.base.ECDataLocalServiceBaseImpl;

public class ECDataLocalServiceImpl extends ECDataLocalServiceBaseImpl {

    public float getPriceBySKU(String sku) {
        float price = 125.99f; 
        return price;
    }

}

我已经在我的 service.xml 中注册了我的 ECDataLocalService

<service-builder package-path="com.rosettastone">
    <author>rajeshp</author>
    <namespace>mycompany</namespace>

    <entity name="ECDataLocalService" local-service="true" remote-service="false" human-name="ECDataLocalService"></entity>

</service-builder>

现在，当我单击 Liferay Dev Studio 中的“BuildServices”图标时，它会抛出 NullPointer 异常。它甚至不显示它为哪个对象找到了 NullPointer，没有错误消息或日志消息，只是简单地显示 NullPointerException 并且不会构建服务。

原文

I have a "ECLocalDataService.java" class. I am trying to build it as liferay local service, so that I can access it from all portlets and velocity templates using ServiceLocator.findService().

My ECLocalDataService is somewhat like this:

public interface ECDataLocalService {

    public java.lang.String getBeanIdentifier();


    public void setBeanIdentifier(java.lang.String beanIdentifier);

    @Transactional(propagation = Propagation.SUPPORTS, readOnly = true)
    public float getPriceBySKU(java.lang.String sku);
}

and its implementation class is like this:

import com.rosettastone.service.base.ECDataLocalServiceBaseImpl;

public class ECDataLocalServiceImpl extends ECDataLocalServiceBaseImpl {

    public float getPriceBySKU(String sku) {
        float price = 125.99f; 
        return price;
    }

}

I have registered my ECDataLocalService in my service.xml

<service-builder package-path="com.rosettastone">
    <author>rajeshp</author>
    <namespace>mycompany</namespace>

    <entity name="ECDataLocalService" local-service="true" remote-service="false" human-name="ECDataLocalService"></entity>

</service-builder>

Now after this, when I click the "BuildServices" icon in Liferay Dev Studio, it throws NullPointer exception. It doesn't even show for what object that it found a NullPointer for, no error message or log messages, just simply display NullPointerException and the service doesn't get built.

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孤星 2024-12-30 04:38:58

<entity name="ECDataLocalService" local-service="true" remote-service="false" human-name="ECDataLocalService"></entity>

此时，只有一个。代码示例中的元素。它没有列，也没有定义主键列。在这些情况下代码生成不可能工作。

<entity name="ECDataLocalService" local-service="true" remote-service="false" human-name="ECDataLocalService"></entity>

At this time, there's only one <entity> element in your code sample. It has no columns, and no primary key columns defined. Code generation cannot possibly work under these circumstances.

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