quartz实现定时任务

定时任务，可让程序在指定时间，自动完成一些事情

parent pom.xml

      <!-- 定义依赖版本号 -->
    <properties>
        <quartz.version>2.2.1</quartz.version>
        <spring.version>4.2.4.RELEASE</spring.version>
    </properties>
    
    <dependencyManagement>
        <dependencies>
            <!-- spring -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-web</artifactId>
                <version>${spring.version}</version>
            </dependency>
            
            <!-- quartz依赖 -->
            <dependency>
                <groupId>org.quartz-scheduler</groupId>
                <artifactId>quartz</artifactId>
                <version>${quartz.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context-support</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <!-- 配置spring-jdbc,工程就正常,我也不知道是为何 -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-jdbc</artifactId>
                <version>${spring.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
  
  <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <!-- 资源文件拷贝插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.7</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <!-- java编译插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
        </plugins>
        <pluginManagement>
            <plugins>
                <!-- 配置Tomcat插件 -->
                <plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
                    <artifactId>tomcat7-maven-plugin</artifactId>
                    <version>2.2</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>

module pom.xml(war工程)

    <!-- 配置依赖 -->
    <dependencies>
        <!-- spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
        
        <!-- quartz依赖 -->
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <!-- 配置spring-jdbc,工程就正常,我也不知道是为何 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

定时任务类

@Component
public class QuartzDemo {

    /**
     * 定时任务
     */
    public void execute() {
        System.out.println("ִ定时任务quartz已经调用:" + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));

    }
}

applicationContext-quartz.xml

dubbo等有些约束在这个demo中用不上,根据需求选择

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
        
        <!-- 包扫描 -->
        <context:component-scan base-package="com.lam.quartz"></context:component-scan>
        
        <!-- 配置定时任务详情,jobDetail -->
        <bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
            <!-- 定时调度实例 -->
            <!-- 包扫描注入bean -->
            <property name="targetObject" ref="quartzDemo"></property>
            <!-- 定时调度方法 -->
            <property name="targetMethod" value="execute"></property>
        </bean>
        
        <!-- 配置触发器 trigger -->
        <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
            <property name="name" value="work_default_name"/>
              <property name="group" value="work_default"/>
              <!-- 定时任务详情 -->
              <property name="jobDetail" ref="jobDetail"></property>
              <!-- 定时规则:每5秒触发一次 -->
            <property name="cronExpression" value="0/5 * * * * ?"></property>
        </bean>
        
        <!-- 配置scheduler工厂 -->
        <bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
            <!-- 配置触发器列表 -->
            <property name="triggers">
                <list>
                    <ref bean="cronTrigger"/>
                </list>
            </property>
        </bean>
</beans>

web.xml

  <!-- 加载spring容器 -->
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring/applicationContext-quartz.xml</param-value>
  </context-param>
  <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

启动工程便可看到控制台每5秒输出一次提示信息

END!