Question

我收到了Gradle错误：

> Task :jar
[Class my.MyPortlet is not assignable to specified service com.liferay.portal.kernel.model.Portlet]

...这个极简主义的Liferay 7 portlet（the official documentation的简化）：

package my;

import com.liferay.portal.kernel.model.Portlet;
import com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet;
import org.osgi.service.component.annotations.Component;

@Component(
    service = Portlet.class
)
public class MyPortlet extends MVCPortlet {
}

在调试模式下运行Gradle并没有给我更多线索：

[aQute.bnd.osgi.Builder] parseClassFile(): path=javax.portlet.PortletRequest resource=:/home/nico/.gradle/caches/modules-2/files-2.1/javax.portlet/portlet-api/2.0/1cd72f2a37fcf8ab9893a9468d7ba71c85fe2653/portlet-api-2.0.jar(javax/portlet/PortletRequest.class):
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] begin com.liferay.ant.bnd.npm.NpmAnalyzerPlugin@39735dcf
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] begin com.liferay.ant.bnd.resource.bundle.ResourceBundleLoaderAnalyzerPlugin@4e811a19
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] parseClassFile(): path=my/MyPortlet.class resource=/home/nico/my/build/classes/java/main/my/MyPortlet.class
[aQute.bnd.osgi.Builder] begin com.liferay.ant.bnd.sass.SassAnalyzerPlugin@526cd630
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] begin com.liferay.ant.bnd.service.ServiceAnalyzerPlugin@a73dc4
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] begin com.liferay.ant.bnd.social.SocialAnalyzerPlugin@2399853a
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] begin aQute.lib.spring.SpringComponent@650e1282
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] begin com.liferay.ant.bnd.spring.SpringDependencyAnalyzerPlugin@51e79545
[aQute.bnd.osgi.Builder] end
[aQute.bnd.osgi.Builder] parseClassFile(): path=my/MyPortlet.class resource=/home/nico/my/build/classes/java/main/my/MyPortlet.class
[aQute.bnd.osgi.Verifier] Trying pre-plugin com.liferay.ant.bnd.jsp.JspAnalyzerPlugin
[aQute.bnd.osgi.Verifier] Trying pre-plugin com.liferay.ant.bnd.npm.NpmAnalyzerPlugin
[aQute.bnd.osgi.Verifier] Trying pre-plugin com.liferay.ant.bnd.resource.bundle.ResourceBundleLoaderAnalyzerPlugin
[aQute.bnd.osgi.Verifier] Trying pre-plugin com.liferay.ant.bnd.sass.SassAnalyzerPlugin
[aQute.bnd.osgi.Verifier] Trying pre-plugin com.liferay.ant.bnd.service.ServiceAnalyzerPlugin
[aQute.bnd.osgi.Verifier] Trying pre-plugin com.liferay.ant.bnd.social.SocialAnalyzerPlugin
[aQute.bnd.osgi.Verifier] Trying pre-plugin aQute.lib.spring.SpringComponent
[aQute.bnd.osgi.Verifier] Trying pre-plugin com.liferay.ant.bnd.spring.SpringDependencyAnalyzerPlugin
[org.dm.gradle.plugins.bundle.JarBuilder] [Class my.MyPortlet is not assignable to specified service com.liferay.portal.kernel.model.Portlet]

Google只有9个“不能分配给指定服务”的结果。

我做错了什么？

Answer 1

使用您的源导入：

import com.liferay.portal.kernel.model.Portlet;

然后：

@Component( service = Portlet.class )

您声称您的班级MyPortlet实施了com.liferay.portal.kernel.model.Portlet。但事实并非如此。 com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet实施javax.portlet.Portlet。

将您的来源导入从com.liferay.portal.kernel.model.Portlet更改为javax.portlet.Portlet。

Answer 2

aQute.bnd.component.AnnotationReader尝试解析service = Portlet.class部分，问题是aQute.bnd.osgi.Analyzer.assignable（MyPortlet，com.liferay.portal.kernel.model.Portlet）返回false。

让我们按照班级层次结构：

问题中的portlet实现
↓
com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet
↓
com.liferay.portal.kernel.portlet.LiferayPortlet
↓
javax.portlet.GenericPortlet
↓
javax.portlet.Portlet

这告诉我们import语句是错误的。它应该是：

import javax.portlet.Portlet;

......而不是：

import com.liferay.portal.kernel.model.Portlet;

修复后，构建成功。

Gradle说“MyPortlet不能分配给指定的服务com.liferay.portal.kernel.model.Portlet”

2 个答案: