Spring Batch_官网DEMO实现

http://spring.io/guides/gs/batch-processing/

使用spring xml方式实现了spring batch官网的demo，现在把具体的代码贴出来，具体的细节配置还要参考官网的说明。

首先建立maven项目，pom文件如下：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">   <modelVersion>4.0.0</modelVersion>     <groupId>lyx</groupId>   <artifactId>SpringBatch2</artifactId>   <version>0.0.1-SNAPSHOT</version>   <packaging>jar</packaging>   <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>   </properties>     <dependencies>    <!--spring context -->    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-context</artifactId>     <version>4.1.1.RELEASE</version>    </dependency>      <!--spring core -->    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-core</artifactId>     <version>4.1.1.RELEASE</version>    </dependency>      <!--spring bean -->    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-beans</artifactId>     <version>4.1.1.RELEASE</version>    </dependency>      <!--spring aop -->      <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-aop</artifactId>     <version>4.1.1.RELEASE</version>    </dependency>      <!--spring jdbc -->    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-jdbc</artifactId>     <version>4.1.1.RELEASE</version>    </dependency>      <!-- spring tx -->    <dependency>     <groupId>org.springframework</groupId>     <artifactId>spring-tx</artifactId>     <version>4.1.1.RELEASE</version>    </dependency>      <dependency>     <groupId>org.springframework.batch</groupId>     <artifactId>spring-batch-core</artifactId>     <version>3.0.2.RELEASE</version>    </dependency>      <dependency>     <groupId>junit</groupId>     <artifactId>junit</artifactId>     <version>4.10</version>     <scope>test</scope>    </dependency>      <dependency>     <groupId>cglib</groupId>     <artifactId>cglib</artifactId>     <version>3.1</version>    </dependency>      <dependency>     <groupId>org.apache.tomcat</groupId>     <artifactId>tomcat-jdbc</artifactId>     <version>8.0.14</version>    </dependency>      <dependency>     <groupId>mysql</groupId>     <artifactId>mysql-connector-java</artifactId>     <version>5.1.6</version>    </dependency>     </dependencies>  </project>

最主要的就是配置下面的这个spring-batch2.xml文件，也就是配置reader，writer，processor，以及各种依赖类。该spring-batch2.xml文件时依据BatchConfiguration.java配置的，具体配置如下：

<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"   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">     <bean id="lineTokenizer"    class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer">    <property name="delimiter" value="," />    <property name="names">     <list>      <value>firstName</value>      <value>lastName</value>     </list>    </property>   </bean>   <bean id="fieldSetMapper"    class="org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper">    <property name="prototypeBeanName" value="person" />   </bean>   <bean id="person" class="com.lyx.batch.Person" scope="prototype" />   <bean id="lineMapper"    class="org.springframework.batch.item.file.mapping.DefaultLineMapper">    <property name="lineTokenizer" ref="lineTokenizer" />    <property name="fieldSetMapper" ref="fieldSetMapper" />   </bean>   <bean id="resource" class="org.springframework.core.io.ClassPathResource">    <constructor-arg index="0" type="java.lang.String"     value="sample-data.csv" />   </bean>   <bean id="flatFileItemReader" class="org.springframework.batch.item.file.FlatFileItemReader">    <property name="resource" ref="resource" />    <property name="encoding" value="utf-8" />    <property name="lineMapper" ref="lineMapper" />   </bean>     <bean id="itemProcessor" class="com.lyx.batch.PersonItemProcessor" />   <bean id="jdbcBatchItemWriter"    class="org.springframework.batch.item.database.JdbcBatchItemWriter">    <property name="itemSqlParameterSourceProvider" ref="itemSqlParameterSourceProvider" />    <property name="sql"     value="INSERT INTO people (first_name, last_name) VALUES (:firstName, :lastName)" />    <property name="dataSource" ref="dataSource" />   </bean>     <bean id="itemSqlParameterSourceProvider"    class="org.springframework.batch.item.database.BeanPropertyItemSqlParameterSourceProvider" />   <!--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" />      <property name="maxActive" value="100" />      <property name="initialSize" value="10" />      <property name="maxWait" value="10000" />      <property name="minIdle" value="10" />     </bean>    </property>   </bean>     <batch:job id="sampleJob" job-repository="jobRepository">    <batch:step id="step">     <tasklet transaction-manager="transactionManager">      <chunk reader="flatFileItemReader" processor="itemProcessor"       writer="jdbcBatchItemWriter" commit-interval="1" />     </tasklet>    </batch:step>   </batch:job>     <!-- 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>

主要的类有以下两个类：

Person.java

package com.lyx.batch;    public class Person {   private String lastName;   private String firstName;     public Person() {   }     public Person(String firstName, String lastName) {    this.firstName = firstName;    this.lastName = lastName;   }     public void setFirstName(String firstName) {    this.firstName = firstName;   }     public String getFirstName() {    return firstName;   }     public String getLastName() {    return lastName;   }     public void setLastName(String lastName) {    this.lastName = lastName;   }     @Override   public String toString() {    return "firstName: " + firstName + ", lastName: " + lastName;   }    }

PersonItemProcessor.java

package com.lyx.batch;    import org.springframework.batch.item.ItemProcessor;    public class PersonItemProcessor implements ItemProcessor<Person, Person> {     public Person process(final Person person) throws Exception {    final String firstName = person.getFirstName().toUpperCase();    final String lastName = person.getLastName().toUpperCase();    final Person transformedPerson = new Person(firstName, lastName);    System.out.println("Converting (" + person + ") into ("      + transformedPerson + ")");    return transformedPerson;   }    }

最后，运行这个demo的前提是你要把spring batch的数据库配置好，具体的sql文件在spring batch core jar包中，还有数据源文件，要放在resources目录中。。

AppMain.java启动该demo

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;    public class AppMain {     public static void main(String[] args)     throws JobExecutionAlreadyRunningException, JobRestartException,     JobInstanceAlreadyCompleteException, JobParametersInvalidException {    @SuppressWarnings("resource")    ApplicationContext context = new ClassPathXmlApplicationContext(      new String[] { "classpath:spring-batch2.xml" });    JobParametersBuilder jobParametersBuilder = new JobParametersBuilder();    Job job = (Job) context.getBean("sampleJob");    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());    }   }  }

如果没有意外的话，会在数据库中看到相应的结果。

在该demo的基础上可以 试验spring batch的各种特性，可以进一步探索spring batch。

==========END==========

来自：http://my.oschina.net/xinxingegeya/blog/340302