[英]Adding another context to a spring application
如何將另一個上下文添加到Web xml?
這是我寫成java類的PersistanceContext:
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = {
"ro.academy.model.daos"
})
@ComponentScan(basePackages = "ro.academy.service")
public class PersistenceContext {
@Bean(destroyMethod = "close")
DataSource dataSource(Environment env) {
BasicDataSource dataSourceConfig = new BasicDataSource();
dataSourceConfig.setDriverClassName(env.getRequiredProperty("db.driver"));
dataSourceConfig.setUrl(env.getRequiredProperty("db.url"));
dataSourceConfig.setUsername(env.getRequiredProperty("db.username"));
dataSourceConfig.setPassword(env.getRequiredProperty("db.password"));
return dataSourceConfig;
}
@Bean
LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource,
Environment env) {
LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
entityManagerFactoryBean.setDataSource(dataSource);
entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
entityManagerFactoryBean.setPackagesToScan("net.petrikainulainen.springdata.jpa.todo");
Properties jpaProperties = new Properties();
//Configures the used database dialect. This allows Hibernate to create SQL
//that is optimized for the used database.
jpaProperties.put("hibernate.dialect", env.getRequiredProperty("hibernate.dialect"));
//Specifies the action that is invoked to the database when the Hibernate
//SessionFactory is created or closed.
jpaProperties.put("hibernate.hbm2ddl.auto",
env.getRequiredProperty("hibernate.hbm2ddl.auto")
);
//Configures the naming strategy that is used when Hibernate creates
//new database objects and schema elements
jpaProperties.put("hibernate.ejb.naming_strategy",
env.getRequiredProperty("hibernate.ejb.naming_strategy")
);
//If the value of this property is true, Hibernate writes all SQL
//statements to the console.
jpaProperties.put("hibernate.show_sql",
env.getRequiredProperty("hibernate.show_sql")
);
//If the value of this property is true, Hibernate will format the SQL
//that is written to the console.
jpaProperties.put("hibernate.format_sql",
env.getRequiredProperty("hibernate.format_sql")
);
entityManagerFactoryBean.setJpaProperties(jpaProperties);
return entityManagerFactoryBean;
}
@Bean
JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(entityManagerFactory);
return transactionManager;
}
}
Web xml具有另一個應用程序上下文(我認為這是默認的上下文):
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
這是當前應用程序上下文,以xml文件形式編寫:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<context:annotation-config/>
</beans>
似乎spring無法識別我擁有所有配置的PersistanceContext。
如何將其添加到應用程序中或讓spring識別它?
提前謝謝了 !
將@ImportResource("classpath:applicationContext.xml")
為PersistentContext類的另一個注釋。
還要在Web中添加<context-param> <param-name>contextClass</param-name> <param-value> org.springframework.web.context.support.AnnotationConfigWebApplicationContext </param-value> </context-param>
。 XML文件
或者,如果您想采用反向方法,
您需要在spring上下文xml文件中添加<context:component-scan base-package="com.javaconfig" />
包,才能從spring xml加載Java配置
將base-package更改為java config所在的軟件包名稱。
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