问题描述
我想在我的 ItemWriter 类中检索 JobParameter 和 JobExecutionContext 对象.如何进行?
I want to retrieve JobParameter and JobExecutionContext object in my ItemWriter class.How to proceed?
我尝试实现 StepExecutionListener ，通过该方法我只是调用父类方法.但这并不成功.
I tried implementing StepExecutionListener through which I am just calling the parent class methods. But it is not succeeding.
谢谢.
推荐答案
实现StepExecutionListener是一种方法.实际上，这是Spring Batch 1.x的唯一方法.
Implementing StepExecutionListener is one way. In fact that's the only way in Spring Batch 1.x.
从Spring Batch 2开始，您还有另一种选择:您可以将Job Parameters和Job Execution Context中的任何条目注入到项目编写器中.使您的项目作者具有 step 范围，然后使用诸如#{jobParameters ['theKeyYouWant']} 或#{jobExecutionContext ['someOtherKey']}之类的表达式为您的项目编写者注入价值.
Starting from Spring Batch 2, you have another choice: You can inject whatever entries in Job Parameters and Job Execution Context to your item writer. Make your item writer with step scope, then make use of expression like #{jobParameters['theKeyYouWant']} or #{jobExecutionContext['someOtherKey']} for value injecting to you item writer.
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