使用Quartz的动态作业数据 [英] Dynamic Job Data using Quartz

问题描述

当我的进程收到消息时，它需要启动一个计时器并在X秒内执行一些逻辑。这些工作需要存储在JDBC存储中，据我所知，这可能与此问题无关。

When my process gets a message, it needs to start a timer and execute some logic in X seconds. These jobs need to be stored in a JDBC store, which as far as I can tell may be irrelevant to this question.

根据我所读到的内容，我应该能够为类似属性的JobDataMap分配不同的JobDataMap到单个Job类，但是我找不到任何文档或示例来支持这个用例。也许我的Google-fu很弱。

Based on what I've read, I should be able to assign a JobDataMap with different values for similar properties to a single Job class, but I'm unable to find any documentation or examples to back this use-case. Perhaps my Google-fu is weak.

这有意义吗？有一个Job类，并以某种方式存储JobDataMap来填充该Job类并在每个消息的基础上运行它？

Does that make sense? Have one Job class and somehow store a JobDataMap to populate that Job class and run it on a per-message basis?

推荐答案

org.quartz.Trigger 同时具有 getJobDataMap（）（这将 new 必要时加一个）和 setJobDataMap（）来获取触发器 JobDataMap 。

org.quartz.Trigger has both getJobDataMap() (which will new up one if necessary) and setJobDataMap() to get the trigger's JobDataMap.

最简单的用法是：

Trigger t = new SimpleTrigger(...);
t.getJobDataMap().put("foo", "bar");

使用现有的值映射进行初始化：

To init with an existing Map of values:

Map data = new HashMap();
data.put("foo", "bar");

t.setJobDataMap(new JobDataMap(data));

在工作执行时获取数据

public void execute(JobExecutionContext context) throws JobExecutionException
{
   String fooValue = context.getMergedJobDataMap().get("foo");
}

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JobDataMap上的文档教程。

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