Spring接口注入

接口注入：这个方法在这就是获取aplicationContext，然后在其他地方调用

如下类(生成)：

package com.atguigu.crowdfunding.portal.web;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * 在持久层、业务层和控制层分别采用 @Repository、@Service 和 @Controller 对分层中的类进行注释，而用 @Component 对那些比较中立的类进行注释
         这里就是说把这个类交给Spring管理，由于不好说这个类属于哪个层面，就用@Component

         其实就是将这个类交给Spring管理

 * @author Administrator
 *
 */
@Component
public class PortalApplicationContextUtils implements ApplicationContextAware {

public static ApplicationContext context;

@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
context = applicationContext;
}

}

在该出使用：

package com.atguigu.crowdfunding.act.listener;

import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.ExecutionListener;
import com.atguigu.crowdfunding.bean.Member;
import com.atguigu.crowdfunding.portal.service.MemberService;
import com.atguigu.crowdfunding.portal.web.PortalApplicationContextUtils;

public class PassListener implements ExecutionListener {

/**
*在该处通过接口注入， 将MemberService注入到给类，由于在Activiti5中流程监听器中无法注入Service，所以采用接口 注入的方式，将Service注入到该类
*/
@Override
public void notify(DelegateExecution execution) throws Exception {
// 更新会员的申请状态 == 2
Integer memberid = (Integer)execution.getVariable("memberid");

MemberService memberService = PortalApplicationContextUtils.context.getBean(MemberService.class);

Member member = memberService.queryMemberById(memberid);
member.setAuthstatus("2");
memberService.updateMemberAuthStatus(member);
}


}