我正在处理一个应用程序，已被要求实施计划的春季批处理作业。我已经设置了一个配置文件，在其中设置了onTouch @Bean，但似乎与ResourcelessTransactionManager混为一谈。
另一个模块中已经存在一个持久性xml，没有编译错误。当我请求返回一个视图项的页面时，我得到了persistence.xml。
这是错误：
NoUniqueBeanDefinitionException是否有一种方法可以告诉Spring Batch使用另一个模块的persistence.xml中定义的数据源，或者这是由其他原因引起的？
答案 0 :(得分：1)
我如下创建了单独的BatchScheduler Java类，并将其包含在BatchConfiguration Java类中。我要同时分享这两个课程。 BatchConfiguration包含另一个jpaTransactionManager。
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean;
import org.springframework.batch.support.transaction.ResourcelessTransactionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
@Configuration
@EnableScheduling
public class BatchScheduler {
@Bean
public ResourcelessTransactionManager resourcelessTransactionManager() {
return new ResourcelessTransactionManager();
}
@Bean
public MapJobRepositoryFactoryBean mapJobRepositoryFactory(
ResourcelessTransactionManager resourcelessTransactionManager) throws Exception {
MapJobRepositoryFactoryBean factory = new
MapJobRepositoryFactoryBean(resourcelessTransactionManager);
factory.afterPropertiesSet();
return factory;
}
@Bean
public JobRepository jobRepository(
MapJobRepositoryFactoryBean factory) throws Exception {
return factory.getObject();
}
@Bean
public SimpleJobLauncher jobLauncher(JobRepository jobRepository) {
SimpleJobLauncher launcher = new SimpleJobLauncher();
launcher.setJobRepository(jobRepository);
return launcher;
}
}
BatchConfiguration包含另一个jpaTransactionManager。
import java.io.IOException;
import java.util.Date;
import java.util.Properties;
import javax.sql.DataSource;
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.Step;
import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepScope;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.batch.core.launch.support.RunIdIncrementer;
import org.springframework.batch.item.database.JpaItemWriter;
import org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper;
import org.springframework.batch.item.file.mapping.DefaultLineMapper;
import org.springframework.batch.item.file.transform.DelimitedLineTokenizer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.core.env.Environment;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.concurrent.ConcurrentTaskScheduler;
import org.springframework.transaction.PlatformTransactionManager;
import trade.api.common.constants.Constants;
import trade.api.entity.SecurityEntity;
import trade.api.trade.batch.item.processor.SecurityItemProcessor;
import trade.api.trade.batch.item.reader.NseSecurityReader;
import trade.api.trade.batch.notification.listener.SecurityJobCompletionNotificationListener;
import trade.api.trade.batch.tasklet.SecurityReaderTasklet;
import trade.api.vo.SecurityVO;
@Configuration
@EnableBatchProcessing
@EnableScheduling
@Import({OhlcMonthBatchConfiguration.class, OhlcWeekBatchConfiguration.class, OhlcDayBatchConfiguration.class, OhlcMinuteBatchConfiguration.class})
public class BatchConfiguration {
private static final String OVERRIDDEN_BY_EXPRESSION = null;
/*
Load the properties
*/
@Value("${database.driver}")
private String databaseDriver;
@Value("${database.url}")
private String databaseUrl;
@Value("${database.username}")
private String databaseUsername;
@Value("${database.password}")
private String databasePassword;
@Autowired
public JobBuilderFactory jobBuilderFactory;
@Autowired
public StepBuilderFactory stepBuilderFactory;
@Autowired
private JobLauncher jobLauncher;
@Bean
public TaskScheduler taskScheduler() {
return new ConcurrentTaskScheduler();
}
//second, minute, hour, day of month, month, day(s) of week
//@Scheduled(cron = "0 0 21 * * 1-5") on week days
@Scheduled(cron="${schedule.insert.security}")
public void importSecuritySchedule() throws Exception {
System.out.println("Job Started at :" + new Date());
JobParameters param = new JobParametersBuilder().addString("JobID",
String.valueOf(System.currentTimeMillis())).toJobParameters();
JobExecution execution = jobLauncher.run(importSecuritesJob(), param);
System.out.println("Job finished with status :" + execution.getStatus());
}
@Bean SecurityJobCompletionNotificationListener securityJobCompletionNotificationListener() {
return new SecurityJobCompletionNotificationListener();
}
//Import Equity OHLC End
//Import Equity Start
// tag::readerwriterprocessor[]
@Bean
public SecurityReaderTasklet securityReaderTasklet() {
return new SecurityReaderTasklet();
}
@Bean
@StepScope
public NseSecurityReader<SecurityVO> nseSecurityReader(@Value("#{jobExecutionContext["+Constants.SECURITY_DOWNLOAD_FILE+"]}") String pathToFile) throws IOException {
NseSecurityReader<SecurityVO> reader = new NseSecurityReader<SecurityVO>();
reader.setLinesToSkip(1);
reader.setResource(new FileSystemResource(pathToFile));
reader.setLineMapper(new DefaultLineMapper<SecurityVO>() {{
setLineTokenizer(new DelimitedLineTokenizer() {{
setNames(new String[] { "symbol", "nameOfCompany", "series", "dateOfListing", "paidUpValue", "marketLot", "isinNumber", "faceValue" });
}});
setFieldSetMapper(new BeanWrapperFieldSetMapper<SecurityVO>() {{
setTargetType(SecurityVO.class);
}});
}});
return reader;
}
@Bean
public SecurityItemProcessor processor() {
return new SecurityItemProcessor();
}
@Bean
public JpaItemWriter<SecurityEntity> writer() {
JpaItemWriter<SecurityEntity> writer = new JpaItemWriter<SecurityEntity>();
writer.setEntityManagerFactory(entityManagerFactory().getObject());
return writer;
}
// end::readerwriterprocessor[]
// tag::jobstep[]
@Bean
public Job importSecuritesJob() throws IOException {
return jobBuilderFactory.get("importSecuritesJob")
.incrementer(new RunIdIncrementer())
.listener(securityJobCompletionNotificationListener())
.start(downloadSecurityStep())
.next(insertSecurityStep())
.build();
}
@Bean
public Step downloadSecurityStep() throws IOException {
return stepBuilderFactory.get("downloadSecurityStep")
.tasklet(securityReaderTasklet())
.build();
}
@Bean
public Step insertSecurityStep() throws IOException {
return stepBuilderFactory.get("insertSecurityStep")
.transactionManager(jpaTransactionManager())
.<SecurityVO, SecurityEntity> chunk(100)
.reader(nseSecurityReader(OVERRIDDEN_BY_EXPRESSION))
.processor(processor())
.writer(writer())
.build();
}
// end::jobstep[]
//Import Equity End
@Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(databaseDriver);
dataSource.setUrl(databaseUrl);
dataSource.setUsername(databaseUsername);
dataSource.setPassword(databasePassword);
return dataSource;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
LocalContainerEntityManagerFactoryBean lef = new LocalContainerEntityManagerFactoryBean();
lef.setPackagesToScan("trade.api.entity");
lef.setDataSource(dataSource());
lef.setJpaVendorAdapter(jpaVendorAdapter());
lef.setJpaProperties(new Properties());
return lef;
}
@Bean
public JpaVendorAdapter jpaVendorAdapter() {
HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
jpaVendorAdapter.setDatabase(Database.MYSQL);
jpaVendorAdapter.setGenerateDdl(true);
jpaVendorAdapter.setShowSql(false);
jpaVendorAdapter.setDatabasePlatform("org.hibernate.dialect.MySQLDialect");
return jpaVendorAdapter;
}
@Bean
@Qualifier("jpaTransactionManager")
public PlatformTransactionManager jpaTransactionManager() {
return new JpaTransactionManager(entityManagerFactory().getObject());
}
@Bean
public static PropertySourcesPlaceholderConfigurer dataProperties(Environment environment) throws IOException {
String[] activeProfiles = environment.getActiveProfiles();
final PropertySourcesPlaceholderConfigurer ppc = new PropertySourcesPlaceholderConfigurer();
ppc.setLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:application-"+activeProfiles[0]+".properties"));
return ppc;
}
//// Import Security End
}
答案 1 :(得分：0)
问题解决了。在另一个配置文件中有一个PlatformTransactionManager bean。我将其设置为@Primary，现在问题已解决。谢谢大家的帮助。