Spring Batch_Intercepting Job Execution

Spring Batch_Intercepting Job Execution_配置JobExecutionListener

关于spring batch skip 的配置请看：http://my.oschina.net/xinxingegeya/blog/346244

在job的运行期间，我们可以捕捉job 的运行开始和结束，这些都是通过配置job 的listener 实现的。

如下配置：

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< beans  xmlns = "http://www.springframework.org/schema/beans"      xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"  xmlns:batch = "http://www.springframework.org/schema/batch"      xmlns:context = "http://www.springframework.org/schema/context"      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd          http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch.xsd          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">      <!-- 包的扫描 -->      < context:component-scan  base-package = "com.lyx.batch"  />        < bean  id = "exceptionHandler"  class = "com.lyx.batch.ExceptionListener"  />        < batch:step  id = "abstractStep"  abstract = "true" >          < batch:listeners >              < batch:listener  ref = "exceptionHandler"  />          </ batch:listeners >      </ batch:step >      < bean  id = "abstractCursorReader"  abstract = "true"          class = "org.springframework.batch.item.database.JdbcCursorItemReader" >          < property  name = "dataSource"  ref = "dataSource"  />      </ bean >        <!-- add people desc job begin -->      < batch:job  id = "addPeopleDescJob" >          < batch:step  id = "addDescStep"  parent = "abstractStep" >              < batch:tasklet >                  < batch:chunk  reader = "peopleAddDescReader"  processor = "allowSkipProcessor"                      writer = "addDescPeopleWriter"  commit-interval = "2"  skip-limit = "10" >                      < batch:skippable-exception-classes >                          <!--batch:include配置允许发生的异常 -->                          < batch:include  class = "com.lyx.batch.InvalidDataException"  />                      </ batch:skippable-exception-classes >                  </ batch:chunk >              </ batch:tasklet >          </ batch:step >          <!-- 在job的运行期间，可以监视job -->          < batch:listeners >              < batch:listener  ref = "sampleListener"  />          </ batch:listeners >      </ batch:job >      <!-- add people desc job end -->      < bean  id = "sampleListener"  class = "com.lyx.batch3.SampleJobExecutionListener"  />        < bean  id = "peopleAddDescReader"  parent = "abstractCursorReader"          scope = "step" >          < property  name = "sql" >              < value > <![CDATA[select first_name ,last_name from people where               first_name like ? or last_name like ?]]> </ value >          </ property >          < property  name = "rowMapper"  ref = "peopleRowMapper"  />          < property  name = "preparedStatementSetter"  ref = "preparedStatementSetter"  />          < property  name = "fetchSize"  value = "20"  />      </ bean >      < bean  id = "peopleRowMapper"  class = "com.lyx.batch.PeopleRowMapper"  />      < bean  id = "preparedStatementSetter"  class = "com.lyx.batch.PeoplePreparedStatementSetter"  />      < bean  id = "allowSkipProcessor"  class = "com.lyx.batch.AllowSkipProcessor"  />      < bean  id = "addDescPeopleWriter"  class = "com.lyx.batch.AddDescPeopleWriter"  />        <!--tomcat jdbc pool数据源配置 -->      < bean  id = "dataSource"  class = "org.apache.tomcat.jdbc.pool.DataSource"          destroy-method = "close" >          < property  name = "poolProperties" >              < bean  class = "org.apache.tomcat.jdbc.pool.PoolProperties" >                  < property  name = "driverClassName"  value = "com.mysql.jdbc.Driver"  />                  < property  name = "url"  value = "jdbc:mysql://localhost:3306/test"  />                  < property  name = "username"  value = "root"  />                  < property  name = "password"  value = "034039"  />              </ bean >          </ property >      </ bean >        <!-- spring batch 配置jobRepository -->      < batch:job-repository  id = "jobRepository"          data-source = "dataSource"  transaction-manager = "transactionManager"          isolation-level-for-create = "REPEATABLE_READ"  table-prefix = "BATCH_"          max-varchar-length = "1000"  />      <!-- spring的事务管理器 -->      < bean  id = "transactionManager"          class = "org.springframework.jdbc.datasource.DataSourceTransactionManager" >          < property  name = "dataSource"  ref = "dataSource"  />      </ bean >      <!-- batch luncher -->      < bean  id = "jobLauncher"          class = "org.springframework.batch.core.launch.support.SimpleJobLauncher" >          < property  name = "jobRepository"  ref = "jobRepository"  />      </ bean > </ beans >

其中最主要的就是：

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<!-- add people desc job begin --> < batch:job  id = "addPeopleDescJob" >      < batch:step  id = "addDescStep"  parent = "abstractStep" >          < batch:tasklet >              < batch:chunk  reader = "peopleAddDescReader"  processor = "allowSkipProcessor"                  writer = "addDescPeopleWriter"  commit-interval = "2"  skip-limit = "10" >                  < batch:skippable-exception-classes >                      <!--batch:include配置允许发生的异常 -->                      < batch:include  class = "com.lyx.batch.InvalidDataException"  />                  </ batch:skippable-exception-classes >              </ batch:chunk >          </ batch:tasklet >      </ batch:step >      <!-- 在job的运行期间，可以监视job -->      < batch:listeners >          < batch:listener  ref = "sampleListener"  />      </ batch:listeners > </ batch:job > <!-- add people desc job end --> < bean  id = "sampleListener"  class = "com.lyx.batch3.SampleJobExecutionListener"  />

通过实现 JobExecutionListener接口捕捉job 运行事件：

SampleJobExecutionListener.java

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package  com.lyx.batch3;   import  org.springframework.batch.core.BatchStatus; import  org.springframework.batch.core.JobExecution; import  org.springframework.batch.core.JobExecutionListener;   public  class  SampleJobExecutionListener  implements  JobExecutionListener {        public  void  beforeJob(JobExecution jobExecution) {          System.out.println( "job start........." );        }        public  void  afterJob(JobExecution jobExecution) {          if  (jobExecution.getStatus() == BatchStatus.COMPLETED) {              // job success                System.out.println( "job success........." );          }  else  if  (jobExecution.getStatus() == BatchStatus.FAILED) {              // job failure              System.out.println( "job failure........." );          }      }   }

需要注意的是 afterJob 方法不管job运行成功还是失败都会执行。

运行AppMain11.java

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package  com.lyx.batch;   import  org.springframework.batch.core.ExitStatus; import  org.springframework.batch.core.Job; import  org.springframework.batch.core.JobExecution; import  org.springframework.batch.core.JobParametersBuilder; import  org.springframework.batch.core.JobParametersInvalidException; import  org.springframework.batch.core.launch.JobLauncher; import  org.springframework.batch.core.repository.JobExecutionAlreadyRunningException; import  org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException; import  org.springframework.batch.core.repository.JobRestartException; import  org.springframework.context.ApplicationContext; import  org.springframework.context.support.ClassPathXmlApplicationContext;   /**   * job execution listener   *    * @author Lenovo   *   */ public  class  AppMain11 {      public  static  void  main(String[] args)              throws  JobExecutionAlreadyRunningException, JobRestartException,              JobInstanceAlreadyCompleteException, JobParametersInvalidException {            long  startTime = System.currentTimeMillis();  // 获取开始时间            @SuppressWarnings ( "resource" )          ApplicationContext context =  new  ClassPathXmlApplicationContext(                  new  String[] {  "classpath:spring-batch-exception-listener.xml"  });          JobParametersBuilder jobParametersBuilder =  new  JobParametersBuilder();          Job job = (Job) context.getBean( "addPeopleDescJob" );          JobLauncher launcher = (JobLauncher) context.getBean( "jobLauncher" );          JobExecution result = launcher.run(job,                  jobParametersBuilder.toJobParameters());          ExitStatus es = result.getExitStatus();          if  (es.getExitCode().equals(ExitStatus.COMPLETED.getExitCode())) {              System.out.println( "任务正常完成" );          }  else  {              System.out.println( "任务失败，exitCode="  + es.getExitCode());          }            long  endTime = System.currentTimeMillis();  // 获取结束时间          System.out.println( "程序运行时间： "  + (endTime - startTime) +  "ms" );      } }

运行结果：

信息: Job: [FlowJob: [name=addPeopleDescJob]] launched with the following parameters: [{}]

job start.........

十一月 19, 2014 12:27:39 下午 org.springframework.batch.core.job.SimpleStepHandler handleStep

信息: Executing step: [addDescStep]

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job success.........

十一月 19, 2014 12:27:43 下午 org.springframework.batch.core.launch.support.SimpleJobLauncher run

信息: Job: [FlowJob: [name=addPeopleDescJob]] completed with the following parameters: [{}] and the following status: [COMPLETED]

任务正常完成

程序运行时间： 6898ms

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