私はSpring、Hibernateなどを使用するJavaアプリケーションを書いています.Jarにパッケージ化され、コマンドから実行されます。
現在、私のメインクラスは次のようになっています。
public class App
{
private static final Logger logger = LoggerFactory.getLogger(App.class);
@Autowired
private static MemberInquiryService memberInquiryService;
public static void main(String[] args )
{
logger.info("Starting Inquiry Batch Process");
int pendingRecords = memberInquiryService.getPendingRecordCount();
logger.info("Current Number Of Pendinig Records (" + pendingRecords + ")");
logger.info("Ending Inquiry Batch Process");
}
}
getPendingRecordCount では、テストのために「10」を返すだけです。
public int getPendingRecordCount()
{
return 10;
};
次のエラーが表示されるのはなぜですか。
Exception in thread "main" java.lang.NullPointerException
at org.XXXX.inquirybatch.app.App.main(App.java:33)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
また、ここに私の DatabaseConfig.class があります
@Configuration
@EnableTransactionManagement
@ComponentScan(basePackages= { "org.xxxx.inquirybatch", "org.xxxx.core" })
@PropertySource("classpath:application.properties")
public class DatabaseConfig {
private static final Logger logger = LoggerFactory.getLogger(DatabaseConfig.class);
@Autowired
Environment env;
@Bean
public DataSource dataSource() {
String serverType = env.getProperty("server.type");
try {
if(serverType.equalsIgnoreCase("tomcat"))
{
com.mchange.v2.c3p0.ComboPooledDataSource ds = new com.mchange.v2.c3p0.ComboPooledDataSource();
ds.setDriverClass(env.getProperty("database.driver"));
ds.setUser(env.getProperty("database.user"));
ds.setPassword(env.getProperty("database.password"));
ds.setJdbcUrl(env.getProperty("database.url"));
return ds;
}
else
{
Context ctx = new InitialContext();
return (DataSource) ctx.lookup("java:jboss/datasources/mySQLDB");
}
}
catch (Exception e)
{
logger.error(e.getMessage());
}
return null;
}
@Bean
public SessionFactory sessionFactory()
{
LocalSessionFactoryBean factoryBean = new LocalSessionFactoryBean();
factoryBean.setDataSource(dataSource());
factoryBean.setHibernateProperties(getHibernateProperties());
factoryBean.setPackagesToScan(new String[] { "org.xxxx.inquirybatch.model", "org.xxxx.core.model" } );
try {
factoryBean.afterPropertiesSet();
} catch (IOException e) {
logger.error(e.getMessage());
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
return factoryBean.getObject();
}
@Bean
public Properties getHibernateProperties()
{
Properties hibernateProperties = new Properties();
hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
hibernateProperties.setProperty("hibernate.show_sql", env.getProperty("hibernate.show_sql"));
hibernateProperties.setProperty("hibernate.use_sql_comments", env.getProperty("hibernate.use_sql_comments"));
hibernateProperties.setProperty("hibernate.format_sql", env.getProperty("hibernate.format_sql"));
hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
hibernateProperties.setProperty("hibernate.generate_statistics", env.getProperty("hibernate.generate_statistics"));
hibernateProperties.setProperty("javax.persistence.validation.mode", env.getProperty("javax.persistence.validation.mode"));
//Audit History flags
hibernateProperties.setProperty("org.hibernate.envers.store_data_at_delete", env.getProperty("org.hibernate.envers.store_data_at_delete"));
hibernateProperties.setProperty("org.hibernate.envers.global_with_modified_flag", env.getProperty("org.hibernate.envers.global_with_modified_flag"));
return hibernateProperties;
}
@Bean
public HibernateTransactionManager hibernateTransactionManager()
{
HibernateTransactionManager htm = new HibernateTransactionManager();
htm.setSessionFactory(sessionFactory());
htm.afterPropertiesSet();
return htm;
}
}