在線程中使用spring註解注入service,使用的時候會發現通過註解注入的service一直是null,原因是程序啓動的時候,線程中是防注入的。所以可以通過以下兩個方法進行調用service:
1、將service當成參數傳值
public class ThreadATestAction extends Thread{
private QueryReportService queryReportService;
public ThreadATestAction(QueryReportService queryReportService){
this.queryReportService=queryReportService;
}
@Override
public void run()
{
Map<String, Object> map=new HashMap<String, Object>();
queryReportService.findAllReportIssued(map);
}
}
2、通過spring bean工廠 實例化類
1)新建類,編寫getbean 方法
/**
*
* <p>Title: AllBean</p>
* <p>Description:線程內防注入,此方法注入service層 </p>
*/
public class AllBean implements ApplicationContextAware{
private static ApplicationContext applicationContext;
public void setApplicationContext(ApplicationContext context) {
AllBean.applicationContext = context;
}
public static Object getBean(String name){
return applicationContext.getBean(name);
}
public static ApplicationContext getApplicationContext() {
return applicationContext;
}
}
2)在spring配置中註冊
<bean id="allBean" class="com.magingunion.framework.util.AllBean" />
3)線程中使用
QueryReportService queryReportService=(QueryReportService) AllBean.getBean("queryReportService");
注意(在service層中加入@Service註解後定義的service名字和上面的getBean的名字需保持一致)