我有以下Spring Batch Job配置:
@Configuration
@EnableBatchProcessing
public class JobConfig {
@Autowired
private JobBuilderFactory jobBuilderFactory;
@Autowired
private StepBuilderFactory stepBuilderFactory;
@Bean
public Job job() {
return jobBuilderFactory.get("job")
.flow(stepA()).on("FAILED").to(stepC())
.from(stepA()).on("*").to(stepB()).next(stepC())
.end().build();
}
@Bean
public Step stepA() {
return stepBuilderFactory.get("stepA").tasklet(new RandomFailTasket("stepA")).build();
}
@Bean
public Step stepB() {
return stepBuilderFactory.get("stepB").tasklet(new PrintTextTasklet("stepB")).build();
}
@Bean
public Step stepC() {
return stepBuilderFactory.get("stepC").tasklet(new PrintTextTasklet("stepC")).build();
}
}
我使用以下代码开始工作:
try {
Map<String,JobParameter> parameters = new HashMap<>();
JobParameter ccReportIdParameter = new JobParameter("03061980");
parameters.put("ccReportId", ccReportIdParameter);
jobLauncher.run(job, new JobParameters(parameters));
} catch (JobExecutionAlreadyRunningException | JobRestartException | JobInstanceAlreadyCompleteException
| JobParametersInvalidException e) {
e.printStackTrace();
}
如何从作业步骤访问ccReportId
参数?
答案 0 :(得分:18)
Tasklet.execute()
方法接受参数ChunkContext
,其中Spring Batch注入所有元数据。所以你只需要通过这些元数据结构挖掘作业参数:
chunkContext.getStepContext().getStepExecution()
.getJobParameters().getString("ccReportId");
或其他选项是以这种方式访问作业参数:
chunkContext.getStepContext().getJobParameters().get("ccReportId");
但是这会给你Object
,你需要把它投射到字符串。