如何使用spring Batch注释将Job参数传递到项目处理器 [英] How to get Job parameteres in to item processor using spring Batch annotation
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问题描述
我正在使用spring MVC。从我的控制器,我调用 jobLauncher
并在 jobLauncher
我传递的作业参数如下,我正在使用注释启用如下配置:
I am using spring MVC. From my controller, I am calling jobLauncher
and in jobLauncher
I am passing job parameters like below and I'm using annotations to enable configuration as below:
@Configuration
@EnableBatchProcessing
public class BatchConfiguration {
// read, write ,process and invoke job
}
JobParameters jobParameters = new JobParametersBuilder().addString("fileName", "xxxx.txt").toJobParameters();
stasrtjob = jobLauncher.run(job, jobParameters);
and here is my itemprocessor
public class DataItemProcessor implements ItemProcessor<InputData, OutPutData> {
public OutPutData process(final InputData inputData) throws Exception {
// i want to get job Parameters here ????
}
}
推荐答案
1)在数据处理器上放置范围注释,即
1) Put a scope annotation on your data processor i.e.
@Scope(value = "step")
2)在数据处理器中创建一个类实例,并使用值注释注入作业参数值:
2) Make a class instance in your data processor and inject the job parameter value by using value annotation :
@Value("#{jobParameters['fileName']}")
private String fileName;
您的最终数据处理器类如下:
Your final Data processor class will look like:
@Scope(value = "step")
public class DataItemProcessor implements ItemProcessor<InputData, OutPutData> {
@Value("#{jobParameters['fileName']}")
private String fileName;
public OutPutData process(final InputData inputData) throws Exception {
// i want to get job Parameters here ????
System.out.println("Job parameter:"+fileName);
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
}
如果你的话数据处理器未初始化为bean,在其上放置@Component注释:
In case your data processor is not initialized as a bean, put a @Component annotation on it:
@Component("dataItemProcessor")
@Scope(value = "step")
public class DataItemProcessor implements ItemProcessor<InputData, OutPutData> {
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