Make Batch auto-configuration back-off is spring-jdbc isn't present

See gh-29487

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/batch/BatchAutoConfiguration.java

@@ -41,6 +41,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Conditional;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
+import org.springframework.jdbc.datasource.init.DatabasePopulator;
 import org.springframework.util.StringUtils;
 
 /**
@@ -60,7 +61,7 @@ import org.springframework.util.StringUtils;
  * @since 1.0.0
  */
 @AutoConfiguration(after = HibernateJpaAutoConfiguration.class)
-@ConditionalOnClass({ JobLauncher.class, DataSource.class })
+@ConditionalOnClass({ JobLauncher.class, DataSource.class, DatabasePopulator.class })
 @ConditionalOnBean({ DataSource.class, JobLauncher.class })
 @EnableConfigurationProperties(BatchProperties.class)
 @Import({ BatchConfigurerConfiguration.class, DatabaseInitializationDependencyConfigurer.class })

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/batch/BatchAutoConfigurationTests.java

@@ -61,6 +61,7 @@ import org.springframework.boot.jdbc.DataSourceBuilder;
 import org.springframework.boot.jdbc.init.DataSourceScriptDatabaseInitializer;
 import org.springframework.boot.sql.init.DatabaseInitializationMode;
 import org.springframework.boot.sql.init.DatabaseInitializationSettings;
+import org.springframework.boot.test.context.FilteredClassLoader;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.boot.test.system.CapturedOutput;
 import org.springframework.boot.test.system.OutputCaptureExtension;
@@ -71,6 +72,7 @@ import org.springframework.context.annotation.Primary;
 import org.springframework.jdbc.BadSqlGrammarException;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.jdbc.datasource.DataSourceTransactionManager;
+import org.springframework.jdbc.datasource.init.DatabasePopulator;
 import org.springframework.orm.jpa.JpaTransactionManager;
 import org.springframework.transaction.PlatformTransactionManager;
 
@@ -114,6 +116,15 @@ class BatchAutoConfigurationTests {
 				});
 	}
 
+	@Test
+	void autoconfigurationBacksOffEntirelyIfSpringJdbcAbsent() {
+		this.contextRunner.withUserConfiguration(TestConfiguration.class, EmbeddedDataSourceConfiguration.class)
+				.withClassLoader(new FilteredClassLoader(DatabasePopulator.class)).run((context) -> {
+					assertThat(context).doesNotHaveBean(JobLauncherApplicationRunner.class);
+					assertThat(context).doesNotHaveBean(BatchDataSourceScriptDatabaseInitializer.class);
+				});
+	}
+
 	@Test
 	void testDefinesAndLaunchesJob() {
 		this.contextRunner.withUserConfiguration(JobConfiguration.class, EmbeddedDataSourceConfiguration.class)