Quartz 之 JobKey 源码解读

今天药忘吃喽~ 2023-06-30 14:52 142阅读 0赞

首先，我们看下上个博文(CronTrigger 示例2 中部分打印的日志内容)

[INFO] 17 一月 09:41:40.016 下午 MyScheduler_Worker-9 [com.example03.SimpleJob]
    SimpleJob says: group1.job1 executing at Fri Jan 17 21:41:40 CST 2020

看到 group1.job1 了没，它是由如下代码打印的.

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3l1bGVpX3Fx_size_16_color_FFFFFF_t_70][]

Jobkey打印的内容是**  group1.job1 .  **

我们先来看看JobKey的源码内容

public final class JobKey extends Key<JobKey> {
    
        private static final long serialVersionUID = -6073883950062574010L;
        
        public JobKey(String name) {
            super(name, null);
        }
    
        public JobKey(String name, String group) {
            super(name, group);
        }
    
        public static JobKey jobKey(String name) {
            return new JobKey(name, null);
        }
        
        public static JobKey jobKey(String name, String group) {
            return new JobKey(name, group);
        }
    
    }

它继承了Key 接口 ，里面有个toString方法 ，由此，可以知晓jobKey的内容.

/**
         * <p>
         * Return the string representation of the key. The format will be:
         * <group>.<name>.
         * </p>
         * 
         * @return the string representation of the key
         */
        @Override
        public String toString() {
            return getGroup() + '.' + getName();
        }

public class Key<T>  implements Serializable, Comparable<Key<T>> {
      
        private static final long serialVersionUID = -7141167957642391350L;
    
        /**
         * The default group for scheduling entities, with the value "DEFAULT".
         */
        public static final String DEFAULT_GROUP = "DEFAULT";
    
        private final String name;
        private final String group;

由上面的代码片段可以看出， Job的默认组名称为 "DEFAULT"  。

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