Question

我正在尝试使用两个servlet配置Spring应用程序：

使用Spring的事务管理的常规Web servlet JPA;
用于提供REST端点的DispatcherServlet，它也是需要相同的交易管理。

我的当前配置与答案 here 相匹配，但有一件事情除外。在RootWebMvcConfig中，我导入了RootConfig。我理解这是我在下面收到的错误消息的原因，但是我想了解如何配置它，以便我的web servlet和REST servlet都可以访问root配置。如果省略导入，则会收到异常，表示通过DispatcherServlet访问REST端点时没有正在进行的会话。

HHH000436：已注册实体经理工厂名称（默认）。如果实体管理器将被群集或钝化，请为属性'hibernate.ejb.entitymanager_factory_name'指定唯一值

有关如何配置这个的建议，以便我的web servlet和REST servlet都可以访问root配置吗？

示例web.xml：

<context-param>
        <param-name>contextClass</param-name>
        <param-value>
          org.springframework.web.context.support.AnnotationConfigWebApplicationContext
      </param-value>
    </context-param>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>my.package.RootConfig</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextClass</param-name>
            <param-value>
                org.springframework.web.context.support.AnnotationConfigWebApplicationContext
            </param-value>
        </init-param>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>my.package.RootWebMvcConfig</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>anotherservlet</servlet-name>
        <servlet-class>my.package.AnotherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>anotherservlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

示例配置类：

@Configuration
@ComponentScan(basePackages = {"my.package"})
@Import(value = {PersistenceConfig.class, SecurityConfig.class})
public class RootConfig {
    ...
}

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = {"my.package.repository"})
public class PersistenceConfig {

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws Exception {
        ...
    }
    ...

}

@Configuration
@ComponentScan(basePackages = {"my.package"})
@EnableWebMvc
@Import(value = {RootConfig.class})
public class RootWebMvcConfig extends WebMvcConfigurerAdapter {
    ...
}

服务类：

@Service
@Transactional(readOnly = true)
public class MyProjectProvider {

    @Autowired
    private EntityToRestPojoMapper mapper; // This is an Orika ConfigurableMapper
    @Autowired
    private MyObjectService service;

    public List<MyObjectPojo> getMyObjects() {
        List<MyObject> data = service.findData();       
        List<MyObjectPojo> dataPojos = new ArrayList<MyObjectPojo>();
        mapper.mapAsCollection(data, dataPojos, MyObjectPojo.class);
        return dataPojos;
    }
}

无法配置RootConfig和RootWebMvcConfig

0 个答案: