我试图在我的Spring批处理项目中添加2个数据源（基于Sping Boot ）。一个用于Spring批处理作业存储库。元数据（因为我们不能在版本5中禁用元数据）。我的app.properties是这样的
spring.reader.datasource.url=jdbc：mysql：//localhost：3306/springbootcrudexample spring.reader.datasource.driverClassName=com.mysql.jdbc.Driver spring.reader.datasource.username=root spring.reader.datasource.password=
spring.datasource.url=jdbc：h2：mem：testdb spring.datasource.driverClassName=org.h2.Driver spring.datasource.username=sa spring.datasource.password=
我的DataSourceConfiguration类如下

@Configuration
public class DataSourceConfiguration {

 @Autowired
    private JobProcessor processor;
    @Autowired
    private JobtWriter writer;
    @Autowired
    private JpaPagingItemReader<OriginDAO> reader;
    
    @Bean
    @Primary
    @ConfigurationProperties("spring.datasource")
    public DataSource domainDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean("readerDataSource")
    @ConfigurationProperties("spring.reader.datasource")
    public DataSource batchDataSource() {
        return DataSourceBuilder.create().build();
    }
}

我的读者很简单：

@Configuration
public class JobReader {

    @Value("${chunkSize}")
    private Integer chunkSize;

    @Bean(destroyMethod="")
    public JpaPagingItemReader<OriginDAO> reader(EntityManagerFactory entityManagerFactory) {
        return new JpaPagingItemReaderBuilder<OriginDAO>()
                .name("dummyname")
                .entityManagerFactory(entityManagerFactory)
                .queryString("select query")
                .pageSize(chunkSize)
                .build();
    }

}

当我尝试运行应用程序时，我的应用程序崩溃了：

2023-05-14 14:58:36.268 ERROR [main] org.springframework.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Failed to instantiate [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Factory method 'entityManagerFactory' threw exception with message: jdbcUrl is required with driverClassName.
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:657)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:645)

我不知道我错过了什么。Tnx任何帮助。