simplified the business to the following code, and found that I was a little confused for null, when I was @ Autowired
Spring-config.xml
<?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">
<context:component-scan base-package="com"/>
</beans>HelloWord.java
@Controller
public class HelloWorld {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}Test class
public class Demo {
@Autowired
HelloWorld bean;
ApplicationContext context;
@Before
public void init() {
context = new ClassPathXmlApplicationContext("classpath:spring-config.xml");
}
@Test
public void testDemo() {
Object boo = context.getBean("helloWorld"); //bean
System.out.println(boo);
System.out.println(bean.getName()); //beannull,?
}
}