基于spring batch,用h2数据库用来存元数据,db2存储user数据,完整的yml配置和job代码
时间: 2024-03-05 21:50:19 浏览: 20
以下是基于Spring Batch,使用H2数据库存储元数据,DB2存储user数据的完整yml配置和job代码示例:
```yaml
spring:
datasource:
url: jdbc:h2:file:~/batch_metadata;DB_CLOSE_ON_EXIT=FALSE
username: sa
password: password
driver-class-name: org.h2.Driver
batch:
initialize-schema: always
job:
names: userImportJob
datasource:
url: jdbc:db2://localhost:50000/sample
username: db2admin
password: password
driver-class-name: com.ibm.db2.jcc.DB2Driver
job-repository:
type: jdbc
table-prefix: BATCH_
h2:
console:
enabled: true
```
以下是使用上述配置的Job代码:
```java
@Configuration
@EnableBatchProcessing
public class UserImportJobConfig {
@Autowired
private JobBuilderFactory jobBuilderFactory;
@Autowired
private StepBuilderFactory stepBuilderFactory;
@Autowired
private DataSource dataSource;
@Bean
public JdbcCursorItemReader<User> userReader() {
JdbcCursorItemReader<User> reader = new JdbcCursorItemReader<>();
reader.setDataSource(dataSource);
reader.setSql("SELECT * FROM USER");
reader.setRowMapper(new UserRowMapper());
return reader;
}
@Bean
public ItemWriter<User> userWriter() {
return items -> {
for (User user : items) {
// 执行具体的写入逻辑
}
};
}
@Bean
public Step userImportStep() {
return stepBuilderFactory.get("userImportStep")
.<User, User>chunk(10)
.reader(userReader())
.writer(userWriter())
.build();
}
@Bean
public Job userImportJob() {
return jobBuilderFactory.get("userImportJob")
.incrementer(new RunIdIncrementer())
.start(userImportStep())
.build();
}
}
```
在这个示例中,我们定义了一个读取DB2中用户数据的`JdbcCursorItemReader`和一个将用户数据写入到其他系统的`ItemWriter`。我们将这两个组件组合在一个步骤中,并将步骤添加到一个`Job`中。我们使用H2数据库来存储Spring Batch的元数据,以跟踪Job的执行状态。