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[英]How to run Spring Batch Jobs in certain order (Spring Boot)?
[英]How Spring Boot run batch jobs
我按照這個樣本進行Spring Batch with Boot。
運行main方法時,將執行作業。 這樣我就無法弄清楚如何控制作業執行。 例如,您如何安排作業,或訪問作業執行或設置作業參數。
我試着注冊我自己的JobLauncher
@Bean
public JobLauncher jobLauncher(JobRepository jobRepo){
SimpleJobLauncher simpleJobLauncher = new SimpleJobLauncher();
simpleJobLauncher.setJobRepository(jobRepo);
return simpleJobLauncher;
}
但是當我嘗試在main方法中使用它時:
public static void main(String[] args) {
ConfigurableApplicationContext ctx = SpringApplication.run(Application.class, args);
JobLauncher jobLauncher = ctx.getBean(JobLauncher.class);
//try catch removed for readability
jobLauncher.run(ctx.getBean(Job.class), new JobParameters());
}
加載上下文時再次執行作業,當我嘗試手動運行時,我得到了JobInstanceAlreadyCompleteException
。 有沒有辦法阻止自動執行作業?
可以通過設置來防止作業執行
spring.batch.job.enabled=false
在application.properties中。 或者您可以使用spring.batch.job.names
它將以逗號分隔的作業名稱列表進行運行。
從這里開始: 如何在執行代碼時第一次停止彈出批量預定作業?
您可以使用休息控制器POST啟用作業的執行:
@RestController
@RequestMapping(value="/job/")
public class JobLauncherController {
private static final Log LOG = LogFactory.getLog(JobLauncherController.class);
@Autowired
private JobLauncher jobLauncher;
@Autowired
private Job job;
@Autowired
private JobRepository jobRepository;
@Autowired
private JobRegistry jobRegistry;
@RequestMapping("/launchjob/{jobName}")
public String handle(@PathVariable("jobName") String jobName, @RequestBody Map<String,Object> request) throws Exception {
try {
request.put("timeJobStarted", DateUtil.getDateFormatted(new Date(), DateUtil.DATE_UUUUMMDDHHMMSS));
Map<String,Object> mapMessage = this.enrichJobMessage(request);
Map<String, JobParameter> jobParameters = new HashMap<>();
mapMessage.forEach((k,v)->{
MapperUtil.castParameter(jobParameters, k, v);
});
jobParameters.put(Field.Batch.JOB_INSTANCE_NAME, new JobParameter(jobName));
jobLauncher.run(job, new JobParameters(jobParameters));
assertNotNull(jobRegistry.getJob(job.getName()));
}catch( NoSuchJobException ex){
jobRegistry.register(new ReferenceJobFactory(job));
} catch (Exception e) {
LOG.error(e.getMessage(),e);
}
return "Done";
}
public static void castParameter(Map<String, JobParameter> jobParameters, String k, Object v){
if(v instanceof String){
jobParameters.put(k, new JobParameter((String)v));
}else if(v instanceof Date){
jobParameters.put(k, new JobParameter((Date)v));
}else if(v instanceof Double){
jobParameters.put(k, new JobParameter((Double)v));
}else if(v instanceof Long){
jobParameters.put(k, new JobParameter((Long)v));
}else{
DslJson dslJson = new DslJson<>();
JsonWriter writer = dslJson.newWriter();
try {
dslJson.serialize(writer,v);
jobParameters.put(k, new JobParameter(writer.toString()));
} catch (IOException e) {
LOG.warn(e.getMessage(), e);
}
}
}
}
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