jingjiecsdn 2020-01-06 10:24 采纳率: 0%
浏览 559

new的对象中获取spring中的bean类报applicationContext为null

我是使用实现ApplicationContextAware接口封装一个工具类来初始化一个applicationContext来使用的,项目启动是也看到初始化成功了,applicationContext是有值的,但在new的对象中使用时却报null?不知道为什么,请大神指点,下面是代码实现:

 public class BeanContext implements ApplicationContextAware {
    private static ApplicationContext applicationContext;

    public static ApplicationContext getApplicationContext(){
        return applicationContext;
    }

    @SuppressWarnings("unchecked")
    public static <T> T getBean(String name) throws BeansException {
        return (T)applicationContext.getBean(name);
    }

    public static <T> T getBean(Class<T> clz) throws BeansException {
        return applicationContext.getBean(clz);
    }



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

public class SyncDataTask extends AbstractTask {

private SyncDataParameters syncDataParameters;

private Job job;

private DataSource dataSource;

private BaseDataSource baseDataSource;

/**

  • task dir
    */
    private String taskDir;

    private ShellCommandExecutor shellCommandExecutor;

    /**

  • process database access
    */
    private ProcessDao processDao;

    private DataxJsonUtil dataxUtil = BeanContext.getBean(DataxJsonUtil.class);
    }

beanContext类上是有component注解的,syncDataTask是普通的类,没有交给spring管理,DataxJsonUtil是spring管理的类

  • 写回答

1条回答

  • cqzenghaiyang 2020-01-06 11:11
    关注
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
           ** this.applicationContext = applicationContext;**
     }
    
    评论

报告相同问题?

悬赏问题

  • ¥15 ELGamal和paillier计算效率谁快?
  • ¥15 file converter 转换格式失败 报错 Error marking filters as finished,如何解决?
  • ¥15 ubuntu系统下挂载磁盘上执行./提示权限不够
  • ¥15 Arcgis相交分析无法绘制一个或多个图形
  • ¥15 关于#r语言#的问题:差异分析前数据准备,报错Error in data[, sampleName1] : subscript out of bounds请问怎么解决呀以下是全部代码:
  • ¥15 seatunnel-web使用SQL组件时候后台报错,无法找到表格
  • ¥15 fpga自动售货机数码管(相关搜索:数字时钟)
  • ¥15 用前端向数据库插入数据,通过debug发现数据能走到后端,但是放行之后就会提示错误
  • ¥30 3天&7天&&15天&销量如何统计同一行
  • ¥30 帮我写一段可以读取LD2450数据并计算距离的Arduino代码