Spring的@Autowired没有注入依赖

Question

我有一个由各种模块组成的项目.基本上,我使用过Spring MVC和JUnit 4,一切都运行良好.但是现在,我添加了几个与测试或MVC无关的类,@ Autowired注释不会向它们注入对象.相同的对象被注入到MVC和JUnit类中,所以我真的很困惑.

这是Spring Context XML:

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc" 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-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <context:component-scan base-package="com.justic.more" />
    <mvc:annotation-driven />
    <context:annotation-config />
    <bean id="monkDAO" class="com.justic.more.data.monkDAO" />
    <bean id="BidDAO" class="com.justic.more.data.BidDAO" />

</beans>

我要注入的类:

@Component
Public Class Tesser {

@Autowired
MonkDAO monkdao;

...
blablabla
...
}

Answer 1

通过与OP的聊天,很明显他创建了对象,Tesser tesser = new Tesser()而不是将其注入测试类.Spring没有机会在它自己不创建的bean中自动装配依赖关系.

解决方案是将Tesser对象自动装入测试类,以便Spring可以注入依赖项.

@Autowired
private Tesser tesser;

@Test
public void testSth() {
    assertTrue(tesser.someBoolReturningMethodUtilizingMonkDAO());
}