我也来学OSGI(三)

新建一个叫 DBLoginBundle 的Equinox 项目

文件结构如图所示,我们要在 META-INF/MANIFEST.MF 中的 依赖 选项卡中选择导入 org.vwpolo.services 这个包

 

package org.vwpolo.login.service;

import java.util.Hashtable;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
import org.vwpolo.login.service.impl.DBLoginServiceImpl;
import org.vwpolo.services.LoginService;

public class DBActivator implements BundleActivator ...{

    private BundleContext context = null;
    private ServiceRegistration serviceRegistration = null;
    private LoginService loginServiceImpl;
    /**//*
     * (non-Javadoc)
     * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
     */
    public void start(BundleContext context) throws Exception ...{
        this.context = context;
        loginServiceImpl = new DBLoginServiceImpl();
        serviceRegistration = this.context.registerService(LoginService.class.getName(), loginServiceImpl, new Hashtable());
    }

    /**//*
     * (non-Javadoc)
     * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
     */
    public void stop(BundleContext context) throws Exception ...{
        serviceRegistration.unregister();
        context = null;
    }

}

package org.vwpolo.login.service.impl;

import org.vwpolo.services.LoginService;

public class DBLoginServiceImpl implements LoginService...{

    @Override
    public boolean login(String userName, String password) ...{
        System.out.println("DB 登陆方式");
        if(userName.equals("vwpolo") && password.equals("123456789"))
            return true;
        return false;
    }

}

MANIFEST.MF文件内容:

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: DBLoginBundle Plug-in
Bundle-SymbolicName: DBLoginBundle
Bundle-Version: 1.0.0
Bundle-Activator: org.vwpolo.login.service.DBActivator
Import-Package: org.osgi.framework;version="1.3.0",
 org.vwpolo.services
Eclipse-LazyStart: true