springbatch入门练习（第二篇）
Posted 愤怒中的小草
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了springbatch入门练习（第二篇）相关的知识，希望对你有一定的参考价值。
对第一遍内容的补充
<?xml version="1.0" encoding="UTF-8"?> <bean:beans xmlns="http://www.springframework.org/schema/batch" xmlns:bean="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:task="http://www.springframework.org/schema/task" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd"> <!-- 作业仓库 --> <job-repository id="jobRepository" data-source="dataSource" transaction-manager="transactionManager" isolation-level-for-create="SERIALIZABLE" table-prefix="BATCH_" max-varchar-length="1000" /> <!-- 作业调度器 --> <bean:bean id="jobLauncher" class="org.springframework.batch.core.launch.support.SimpleJobLauncher"> <bean:property name="jobRepository" ref="jobRepository"/> </bean:bean> <!-- 配置大小为1的线程池 --> <task:executor id="executor" pool-size="1" /> <!-- 异步作业调度器 --> <bean:bean id="jobLauncherAsyn" class="org.springframework.batch.core.launch.support.SimpleJobLauncher"> <bean:property name="jobRepository" ref="jobRepository"/> <!-- 为作业调度器配置执行的线程池，作业执行期间会从线程池中选择一个线程执行job --> <bean:property name="taskExecutor" ref="executor" /> </bean:bean> <!-- 事务管理器 --> <bean:bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <bean:property name="dataSource" ref="dataSource" /> </bean:bean> <!-- 数据源 --> <bean:bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <bean:property name="driverClassName"> <bean:value>com.mysql.jdbc.Driver</bean:value> </bean:property> <bean:property name="url"> <bean:value>jdbc:mysql://127.0.0.1:3306/springbatch</bean:value> </bean:property> <bean:property name="username" value="root"></bean:property> <bean:property name="password" value="123456"></bean:property> </bean:bean> </bean:beans>
<?xml version="1.0" encoding="UTF-8"?> <bean:beans xmlns="http://www.springframework.org/schema/batch" xmlns:bean="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.2.xsd"> <bean:import resource="classpath:job-context03.xml"/> <!-- 通过abstract属性定义baseJob为抽象的job，抽象的job不能被实例化 --> <job id="baseJob" abstract="true"> <listeners> <listener ref="sysoutListener"></listener> </listeners> </job> <!-- billjob继承 baseJob,billjob拥有父类的所有特性，billjob执行的时候也会调用basejob中 定义的拦截器sysoutListener --> <!-- 定义一个批处理作业 restartable默认值是true支持重新启动，false不支持重新启动--> <job id="billJob" parent="baseJob" restartable="true"> <!-- 定义个billStep的作业步，有一个面向批的操作组成 --> <step id="billStep"> <!-- 定义批处理操作采用定义的事务管理器，负责批处理中事务管理操作 --> <tasklet transaction-manager="transactionManager"> <!-- 定义了面向批的操作，定义了读操作csvItemReader,处理操作 creditBillProcessor，写操作csvItemWriter commit-interval表示提交间隔的大小，即每处理两条数据进行一次写操作--> <chunk reader="csvItemReader" writer="csvItemWriter" processor="creditBillProcessor" commit-interval="2"> </chunk> </tasklet> </step> <!-- 定义拦截器 --> <!-- 如果父子中均定义了拦截器，通过设置merge属性为true对拦截器进行合并，如果为false， 则子类中的拦截器覆盖掉父类中的拦截器 --> <listeners merge="true"> <listener ref="systemOutJobExecutionListener"></listener> <!-- <listener ref="sysoutListener"></listener> <listener ref="systemOutJobExecutionListener"></listener> --> </listeners> <!-- 定义参数校验 --> <validator ref="validator"></validator> </job> <!-- 执行该job的时候，必须输入date参数，最多输入date、name两个参数，任何其他参数的名字都会导致校验类不通过 --> <bean:bean id="validator" class="org.springframework.batch.core.job.DefaultJobParametersValidator"> <bean:property name="requiredKeys"> <bean:set> <bean:value>date</bean:value> </bean:set> </bean:property> <bean:property name="optionalKeys"> <bean:set> <bean:value>inputResource</bean:value> </bean:set> </bean:property> </bean:bean> <bean:bean id="sysoutListener" class="com.batman.core.batch.listener.SystemOut"> </bean:bean> <bean:bean id="systemOutJobExecutionListener" class="com.batman.core.batch.listener.SystemOutJobExecutionListener"> </bean:bean> <!-- 读取信用卡账单文件,CSV格式 --> <!-- 通过设置scope="step"来定义 csvItemReader的生命周期与step绑定 通过使用step scope，可以设置属性的late binding(属性后绑定)能力--> <bean:bean id="csvItemReader" class="org.springframework.batch.item.file.FlatFileItemReader" scope="step"> <!-- 读取文件资源 --> <bean:property name="resource" value="#{jobParameters[‘inputResource‘]}"/> <!-- value="classpath:credit-card-bill-201303.csv"/> --> <!-- 通过lineMapper可以把文本中的一行转换成领域对象CreditBill --> <bean:property name="lineMapper"> <bean:bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper"> <!-- 定义文本中的分割符号 --> <bean:property name="lineTokenizer" ref="lineTokenizer"/> <!-- 根据lineTokenizer中定义的names属性映射到creditBill中，最终组装成信用卡账单对象 --> <bean:property name="fieldSetMapper"> <bean:bean class="org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper"> <bean:property name="prototypeBeanName" value="creditBill"> </bean:property> </bean:bean> </bean:property> </bean:bean> </bean:property> </bean:bean> <!-- lineTokenizer --> <bean:bean id="lineTokenizer" class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer"> <bean:property name="delimiter" value=","/> <bean:property name="names"> <bean:list> <bean:value>accountID</bean:value> <bean:value>name</bean:value> <bean:value>amount</bean:value> <bean:value>date</bean:value> <bean:value>address</bean:value> </bean:list> </bean:property> </bean:bean> <!-- 写信用卡账单文件，CSV格式 --> <bean:bean id="csvItemWriter" class="org.springframework.batch.item.file.FlatFileItemWriter" scope="step"> <bean:property name="resource" value="file:target/outputFile.csv"/> <bean:property name="lineAggregator"> <bean:bean class="org.springframework.batch.item.file.transform.DelimitedLineAggregator"> <bean:property name="delimiter" value=","></bean:property> <bean:property name="fieldExtractor"> <bean:bean class="org.springframework.batch.item.file.transform.BeanWrapperFieldExtractor"> <bean:property name="names" value="accountID,name,amount,date,address"> </bean:property> </bean:bean> </bean:property> </bean:bean> </bean:property> </bean:bean> <bean:bean id="creditBill" scope="prototype" class="com.batman.core.batch.CreditBill"> </bean:bean> <!-- 负责处理读入的数据 --> <bean:bean id="creditBillProcessor" scope="step" class="com.batman.core.batch.CreditBillProcessor"> </bean:bean> </bean:beans>
package com.batman.core.batch; import java.util.Date; import org.springframework.batch.core.Job; import org.springframework.batch.core.JobExecution; import org.springframework.batch.core.JobParameters; import org.springframework.batch.core.JobParametersBuilder; import org.springframework.batch.core.launch.JobLauncher; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class JobLaunch { /** * 执行批处理作业.<br> * @param jobPath 作业配置文件 * @param jobName 作业名 * @param builder 作业参数构造器 */ public static void executeJob(String jobPath, String jobName, JobParametersBuilder builder) { ApplicationContext context = new ClassPathXmlApplicationContext(jobPath); JobLauncher launcher = (JobLauncher) context.getBean("jobLauncher"); Job job = (Job) context.getBean(jobName); try { JobExecution result = launcher.run(job, builder.toJobParameters()); System.out.println(result.toString()); } catch (Exception e) { e.printStackTrace(); } } // public static void executeJobAsyn(String jobPath, String jobName, JobParametersBuilder builder) { ApplicationContext context = new ClassPathXmlApplicationContext(jobPath); JobLauncher launcher = (JobLauncher) context.getBean("jobLauncherAsyn"); Job job = (Job) context.getBean(jobName); try { JobExecution result = launcher.run(job, builder.toJobParameters()); System.out.println(result.toString()); } catch (Exception e) { e.printStackTrace(); } } /** * @param args */ public static void main(String[] args) { /*executeJob("job.xml", "billJob", new JobParametersBuilder().addString("date", "20130308"));*/ /*executeJob("job.xml", "billJob", new JobParametersBuilder().addDate("date", new Date()) .addString("name", "aad") .addString("inputResource", "classpath:credit-card-bill-201303.csv"));*/ /*-------异步执行--------*/ executeJobAsyn("job.xml", "billJob", new JobParametersBuilder().addDate("date", new Date()) .addString("inputResource", "classpath:credit-card-bill-201303.csv")); } /*public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext( "job.xml"); //获取作业调度器 JobLauncher launcher = (JobLauncher) context.getBean("jobLauncher"); //获取任务对象 Job job = (Job) context.getBean("billJob"); try { //通过JobLauncher的run方法执行billJob任务 JobExecution result = launcher.run(job, new JobParameters()); System.out.println(result.toString()); } catch (Exception e) { e.printStackTrace(); } }*/ }
以上是关于springbatch入门练习（第二篇）的主要内容，如果未能解决你的问题，请参考以下文章