├── .gitignore
├── pom.xml
└── src
    └── main
        ├── java
            └── demo
            │   ├── DeviceCommand.java
            │   ├── HelloItemProcessor.java
            │   ├── HelloLineAggregator.java
            │   ├── HelloLineMapper.java
            │   └── Main.java
        └── resources
            ├── applicationContext.xml
            └── batch-data-source.csv


/.gitignore:
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1 | 
2 | .idea/
3 | *.iml
4 | target/


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/pom.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns="http://maven.apache.org/POM/4.0.0"
 3 |          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5 |     <modelVersion>4.0.0</modelVersion>
 6 | 
 7 |     <groupId>cn.wudashan</groupId>
 8 |     <artifactId>spring-batch-demo</artifactId>
 9 |     <version>1.0-SNAPSHOT</version>
10 | 
11 | 
12 |     <dependencies>
13 | 
14 |             <dependency>
15 |                 <groupId>org.springframework.batch</groupId>
16 |                 <artifactId>spring-batch-core</artifactId>
17 |                 <version>3.0.8.RELEASE</version>
18 |             </dependency>
19 | 
20 | 
21 |     </dependencies>
22 | 
23 | 
24 |     <build>
25 |         <plugins>
26 |             <plugin>
27 |                 <groupId>org.apache.maven.plugins</groupId>
28 |                 <artifactId>maven-compiler-plugin</artifactId>
29 |                 <configuration>
30 |                     <source>1.8</source>
31 |                     <target>1.8</target>
32 |                 </configuration>
33 |             </plugin>
34 |         </plugins>
35 |     </build>
36 | 
37 | 
38 | 
39 | 
40 | </project>


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/src/main/java/demo/DeviceCommand.java:
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 1 | package demo;
 2 | 
 3 | /**
 4 |  * 命令DTO类
 5 |  * Created by wuzhaofeng on 17/7/23.
 6 |  */
 7 | public class DeviceCommand {
 8 | 
 9 |     private String id;
10 | 
11 |     private String status;
12 | 
13 |     public String getId() {
14 |         return id;
15 |     }
16 | 
17 |     public void setId(String id) {
18 |         this.id = id;
19 |     }
20 | 
21 |     public String getStatus() {
22 |         return status;
23 |     }
24 | 
25 |     public void setStatus(String status) {
26 |         this.status = status;
27 |     }
28 | }
29 | 


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/src/main/java/demo/HelloItemProcessor.java:
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 1 | package demo;
 2 | 
 3 | import org.springframework.batch.item.ItemProcessor;
 4 | 
 5 | /**
 6 |  * Created by wuzhaofeng on 17/7/23.
 7 |  */
 8 | public class HelloItemProcessor implements ItemProcessor<DeviceCommand, DeviceCommand> {
 9 | 
10 |     @Override
11 |     public DeviceCommand process(DeviceCommand deviceCommand) throws Exception {
12 | 
13 |         // 模拟下发命令给设备
14 |         System.out.println("send command to device, id=" + deviceCommand.getId());
15 | 
16 |         // 更新命令状态
17 |         deviceCommand.setStatus("SENT");
18 | 
19 |         // 返回命令对象
20 |         return deviceCommand;
21 | 
22 |     }
23 | 
24 | }
25 | 


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/src/main/java/demo/HelloLineAggregator.java:
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 1 | package demo;
 2 | 
 3 | import org.springframework.batch.item.file.transform.LineAggregator;
 4 | 
 5 | /**
 6 |  * Created by wuzhaofeng on 17/7/23.
 7 |  */
 8 | public class HelloLineAggregator implements LineAggregator<DeviceCommand> {
 9 | 
10 |     @Override
11 |     public String aggregate(DeviceCommand deviceCommand) {
12 | 
13 |         StringBuffer sb = new StringBuffer();
14 |         sb.append(deviceCommand.getId());
15 |         sb.append(",");
16 |         sb.append(deviceCommand.getStatus());
17 |         return sb.toString();
18 | 
19 |     }
20 | 
21 | }
22 | 


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/src/main/java/demo/HelloLineMapper.java:
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 1 | package demo;
 2 | 
 3 | import org.springframework.batch.item.file.LineMapper;
 4 | 
 5 | /**
 6 |  * ORM
 7 |  * Created by wuzhaofeng on 17/7/23.
 8 |  */
 9 | public class HelloLineMapper implements LineMapper<DeviceCommand> {
10 | 
11 |     @Override
12 |     public DeviceCommand mapLine(String line, int lineNumber) throws Exception {
13 | 
14 |         String[] args = line.split(",");
15 |         DeviceCommand deviceCommand = new DeviceCommand();
16 |         deviceCommand.setId(args[0]);
17 |         deviceCommand.setStatus(args[1]);
18 |         return deviceCommand;
19 | 
20 |     }
21 | 
22 | }
23 | 


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/src/main/java/demo/Main.java:
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 1 | package demo;
 2 | 
 3 | import org.springframework.batch.core.Job;
 4 | import org.springframework.batch.core.JobParameters;
 5 | import org.springframework.batch.core.Step;
 6 | import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
 7 | import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
 8 | import org.springframework.batch.core.launch.JobLauncher;
 9 | import org.springframework.batch.core.repository.JobRepository;
10 | import org.springframework.batch.item.file.FlatFileItemReader;
11 | import org.springframework.batch.item.file.FlatFileItemWriter;
12 | import org.springframework.context.ApplicationContext;
13 | import org.springframework.context.support.ClassPathXmlApplicationContext;
14 | import org.springframework.core.io.FileSystemResource;
15 | import org.springframework.transaction.PlatformTransactionManager;
16 | 
17 | /**
18 |  * demo.Demo for spring batch
19 |  * Created by wuzhaofeng on 17/7/23.
20 |  */
21 | public class Main {
22 | 
23 | 
24 |     public static void main(String[] args) throws Exception {
25 | 
26 |         // 加载上下文
27 |         String[] configLocations = {"applicationContext.xml"};
28 |         ApplicationContext applicationContext = new ClassPathXmlApplicationContext(configLocations);
29 | 
30 |         // 获取任务启动器
31 |         JobLauncher jobLauncher = applicationContext.getBean(JobLauncher.class);
32 |         JobRepository jobRepository = applicationContext.getBean(JobRepository.class);
33 |         PlatformTransactionManager transactionManager = applicationContext.getBean(PlatformTransactionManager.class);
34 | 
35 |         // 创建reader
36 |         FlatFileItemReader<DeviceCommand> flatFileItemReader = new FlatFileItemReader<>();
37 |         flatFileItemReader.setResource(new FileSystemResource("src/main/resources/batch-data-source.csv"));
38 |         flatFileItemReader.setLineMapper(new HelloLineMapper());
39 | 
40 |         // 创建processor
41 |         HelloItemProcessor helloItemProcessor = new HelloItemProcessor();
42 | 
43 |         // 创建writer
44 |         FlatFileItemWriter<DeviceCommand> flatFileItemWriter = new FlatFileItemWriter<>();
45 |         flatFileItemWriter.setResource(new FileSystemResource("src/main/resources/batch-data-target.csv"));
46 |         flatFileItemWriter.setLineAggregator(new HelloLineAggregator());
47 | 
48 | 
49 |         // 创建Step
50 |         StepBuilderFactory stepBuilderFactory = new StepBuilderFactory(jobRepository, transactionManager);
51 |         Step step = stepBuilderFactory.get("step")
52 |                           .<DeviceCommand, DeviceCommand>chunk(1)
53 |                           .reader(flatFileItemReader)       // 读操作
54 |                           .processor(helloItemProcessor)    // 处理操作
55 |                           .writer(flatFileItemWriter)       // 写操作
56 |                           .build();
57 | 
58 |         // 创建Job
59 |         JobBuilderFactory jobBuilderFactory = new JobBuilderFactory(jobRepository);
60 |         Job job = jobBuilderFactory.get("job")
61 |                                    .start(step)
62 |                                    .build();
63 | 
64 |         // 启动任务
65 |         jobLauncher.run(job, new JobParameters());
66 | 
67 |     }
68 | 
69 | }
70 | 


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/src/main/resources/applicationContext.xml:
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 1 | <beans xmlns="http://www.springframework.org/schema/beans"
 2 |        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3 |        xsi:schemaLocation="
 4 |            http://www.springframework.org/schema/beans
 5 |            http://www.springframework.org/schema/beans/spring-beans.xsd">
 6 | 
 7 | 
 8 |     <!-- 事务管理器 -->
 9 |     <bean id="transactionManager" class="org.springframework.batch.support.transaction.ResourcelessTransactionManager"/>
10 | 
11 |     <!-- 任务仓库 -->
12 |     <bean id="jobRepository" class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
13 |         <property name="transactionManager" ref="transactionManager"/>
14 |     </bean>
15 | 
16 |     <!-- 任务加载器 -->
17 |     <bean id="jobLauncher" class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
18 |         <property name="jobRepository" ref="jobRepository"/>
19 |     </bean>
20 | 
21 | </beans>


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/src/main/resources/batch-data-source.csv:
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 1 | 1,PENDING
 2 | 2,PENDING
 3 | 3,PENDING
 4 | 4,PENDING
 5 | 5,PENDING
 6 | 6,PENDING
 7 | 7,PENDING
 8 | 8,PENDING
 9 | 9,PENDING
10 | 10,PENDING
11 | 


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