2014-10-06 64 views
0

我收到豆类是如何工作的一些帮助,到目前为止,我有一个xml:豆到豆值

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 

    <bean id= "currentDateService" class ="xx.CurrentDateServiceImpl" /> 
    <bean id= "CurrentDateServiceFormat" class ="xx.CurrentDateServiceFormatImpl"> 
    <property name="service" ref="currentDateService"/> 
    </bean> 
</beans> 

一个简单的方法来获得当前日期:

public class CurrentDateServiceImpl implements CurrentDateService { 
    public LocalDate getCurrentDate() { 
     return LocalDate.now() ; 

    } 
} 

,我目前正致力于在格式化当前日期我收到:

public class CurrentDateServiceFormatImpl implements CurrentDateServiceFormat{ 


    private static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd-MM-yyyy"); 

    CurrentDateService service; 

    public String formatCurrentDate(){ 
     return service.getCurrentDate().format(formatter); 
    } 

    public void setService(CurrentDateService service){ 
     this.service = service; 
    } 
} 

我的测试是:

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(locations = { "file:src/main/resources/META-INF/application-context.xml" }) 
public class CurrentDateServiceImplTest { 

@Autowired 
CurrentDateService service; 
CurrentDateServiceFormat service2; 


    @Test 
    public void test() { 

     LocalDate date = LocalDate.now(); 
     System.out.println(service); 
     System.out.println(service2); 
     LocalDate date2 = service.getCurrentDate(); 
     assertEquals(date, date2); 
    } 

} 

但我打印出来的service2是空的,因此即时无法运行service2.formatCurrentDate,我做错了什么?

+0

另请注意,如果您只是在学习Spring,您应该学习JavaConfig的处事方式 - 基于XML的配置仅用于遗留目的,不会用于这个世界...... – 2014-10-06 07:31:42

+0

是否有任何优秀的教程可以提供建议学习JavaConfig的方式? – Monty 2014-10-06 07:35:32

+0

最简单的出发点之一是[new Spring Boot](http://spring.io/guides/gs/spring-boot/)自动引导程序。否则,[参考文档]中有大量信息(http://docs.spring.io/spring-javaconfig/docs/1.0.0.M4/reference/html/ch03.html)。 – 2014-10-06 07:37:33

回答

1

您错过了service2对象的@Autowired注释。添加它,它应该工作。