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  • 解决Spring+Quartz不能注入Bean的问题

    Spring application-quartz的配置
    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util
    http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    <bean id="ordersQuartz" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
    <property name="name" value="exampleJob" />
    <property name="jobClass" value="com.ak.orders.quartz.OrdersQuartz" />
    </bean>

    <bean id="taskTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
    <property name="jobDetail" ref="ordersQuartz" />
    <property name="cronExpression" value="0 */8 * * * ?" />
    </bean>

    <bean id="schedulerFactoryBean"
    class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
    <property name="triggers">
    <list>
    <ref bean="taskTrigger" />
    </list>
    </property>
    </bean>

    </beans>
    任务类
    import org.springframework.scheduling.quartz.QuartzJobBean;
    public class OrdersQuartz extends QuartzJobBean{
    @Resource
    private OrderService orderService ;
    @Override
    protected void executeInternal(JobExecutionContext arg0) throws JobExecutionException {
    //任务内容
    orderservice.saveOrders(orders);
    }
    }

    问题
    NullpointException
    orderService 为 null . 调用不到方法.
    解决:
    1. 添加一个 系统帮助类
    package com.ak.orders.quartz;

    import java.util.Locale;
    import org.springframework.beans.BeansException;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.ApplicationContextAware;
    /**
    * 系统bean帮助类
    */
    public class SpringContextUtil implements ApplicationContextAware {

    private static ApplicationContext context;
    @Override
    @SuppressWarnings("static-access" )
    public void setApplicationContext(ApplicationContext contex)
    throws BeansException {
    // TODO Auto-generated method stub
    this.context = contex;
    }
    public static Object getBean(String beanName){
    return context.getBean(beanName);
    }
    public static String getMessage(String key){
    return context.getMessage(key, null, Locale.getDefault());
    }
    }
    2. 在spring配置文件中添加一个 bean
    <bean id="SpringContextUtil" class="com.ak.orders.quartz.SpringContextUtil"></bean>
    3. 程序获取 bean 代码
    private OrderService orderService = (OrderService)SpringContextUtil.getBean("parms");

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  • 原文地址:https://www.cnblogs.com/73tong/p/7992797.html
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