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我收到豆類是如何工作的一些幫助,到目前爲止,我有一個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>
一個簡單的方法來獲得當前日期:
public class CurrentDateServiceImpl implements CurrentDateService {
public LocalDate getCurrentDate() {
return LocalDate.now() ;
}
}
,我目前正致力於在格式化當前日期我收到:
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;
}
}
我的測試是:
@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);
}
}
但我打印出來的service2是空的,因此即時無法運行service2.formatCurrentDate,我做錯了什麼?
另請注意,如果您只是在學習Spring,您應該學習JavaConfig的處事方式 - 基於XML的配置僅用於遺留目的,不會用於這個世界...... – 2014-10-06 07:31:42
是否有任何優秀的教程可以提供建議學習JavaConfig的方式? – Monty 2014-10-06 07:35:32
最簡單的出發點之一是[new Spring Boot](http://spring.io/guides/gs/spring-boot/)自動引導程序。否則,[參考文檔]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