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我正在尝试在不使用 ext 和 servicebuilder 的情况下实现可重用的自定义服务。我参考了这篇文章： http: //www.devatwork.nl/2010/04/implementing-a-reusable-liferay-service-without-ext-or-service-builder/，但我对如何实现这个感到困惑使用日食？以下是我执行此操作的步骤：

- Created liferay-plugin project within eclipse.
- Created package containing CustomServices (interface) and CustomServicesUtil.
- Created jar file of package in step 2.
- Placed that jar file in tomcat\lib\ext\
- Then created package (with in same liferay-plugin project), that includes CutomServicesImpl and CustomServicesBaseImpl
- Defined portlet-spring.xml, service.properties, and modified web.xml (as per the article), and finally deployed the project.

在部署时，项目已成功部署，但是当我尝试通过 CustomServicesUtil.getCustomMethod() 使用 CustomServicesImpl 中定义的 customMethods 时，出现以下错误：

        "java.lang.ClassNotFoundException: com.demo.custom.services.CustomServicesUtil"

我将构建路径配置为包含 customservices.jar 文件，但它无法正常工作，仍然显示相同的错误。我不知道这是否是实现可重用服务的正确方法。我试过这个，以便我可以在我的一个项目中使用自定义方法。

这是自定义服务的代码：

  • 定制服务.java

     package com.demo.custom.services;

 import com.liferay.portal.model.User;

 public interface CustomServices {
    String getCustomName(User user);
 }

  • CustomServicesUtil.java

        package com.demo.custom.services;

    import com.liferay.portal.model.User;

    public class CustomServicesUtil {
        private static CustomServices services;

        public static CustomServices getServices() {
            if (services == null) {
                throw new RuntimeException("Custom Services not set");
            }

            return services;
        }

        public void setServices(CustomServices pServices) {
            services = pServices;
        }

        public static String getCustomName(User user){
            return getServices().getCustomName(user);
        }
    }

  • CustomServicesBaseImpl.java

    package com.demo.custom.services.impl;

import com.demo.custom.services.CustomServices;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.service.base.PrincipalBean;
import com.liferay.portal.util.PortalUtil;

public abstract class CustomServicesBaseImpl extends PrincipalBean implements CustomServices {
    protected CustomServices services;

    public CustomServices getServices() {
        return services;
    }

    public void setServices(CustomServices pServices) {
        this.services = pServices;
    }
    protected void runSQL(String sql) throws SystemException {
        try {
            PortalUtil.runSQL(sql);
        } catch (Exception e) {
            throw new SystemException(e);
        }
    }
}

  • CustomServicesImpl.java

    package com.demo.custom.services.impl;

import com.liferay.portal.model.User;

public class CustomServicesImpl extends CustomServicesBaseImpl {

    @Override
    public String getCustomName(User user) {
        // TODO Auto-generated method stub

        if(user == null){
            return null;
        }else{
            return new StringBuffer().append(user.getFirstName()).append(" ").append(user.getLastName()).toString();
        }
    }

}

这是我的另一个 portlet 的控制器类的代码，我在其中使用此服务。

  • HelloCustomName.java

    package com.test;

import java.io.IOException;

import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import com.demo.custom.services.CustomServicesUtil;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.model.User;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.util.bridges.mvc.MVCPortlet;


public class HelloCustomName extends MVCPortlet {

    @Override
    public void doView(RenderRequest renderRequest,
            RenderResponse renderResponse) throws IOException, PortletException {
        System.out.println("--doview----");
        ThemeDisplay themeDisplay = (ThemeDisplay)renderRequest.getAttribute(WebKeys.THEME_DISPLAY);
        User user = themeDisplay.getUser();
        String customName = CustomServicesUtil.getCustomName(user); //getting error here
        System.out.println("customName:" + customName);
        }
}

请指出我如何实施可重复服务？任何指导都会非常有用。

谢谢。

4

1 回答 1

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我的想法是，您不需要服务的复杂性。只需制作实用程序类并将其放入tomcat/lib/ext. 确保在tomcat/lib/ext中正确配置tomcat/conf/catalina.properties，如下所示：

  common.loader=${catalina.home}/lib/ext/*.jar
于 2012-05-07T13:14:03.953 回答