一、在resource目录里创建applicationContext.xml文件

<?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="checkInfo" class="com.xxxx.fabu.model.CheckInfo"/>

</beans>

测试：

public class SpringTest {

    @Test
    public void testGetBean() {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        CheckInfo checkInfo = context.getBean("checkInfo", CheckInfo.class);

        if (checkInfo!=null) {
            checkInfo.toString();
        }

    }
}

二、基于xml依赖注入

<?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">

    <!--定义一个java对象，当spring启动的时候就会自动初始化-->
    <bean id="checkInfo" class="com.xxxx.fabu.model.CheckInfo"/>

    <bean id="user" class="com.xxxx.fabu.model.User">
        <!--<property name="userName" value="姓名"/>-->
        <!--<property name="role" value="1"/>-->
        <constructor-arg name="userName" value="张三"/>
        <constructor-arg name="role" value="1"/>
    </bean>

</beans>

三、基于Annotation注入

在applicationContext中加入：

http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd

和：

    <!--在当前的配置之中采用Annotation的注解方式进行定义-->
    <context:annotation-config/>
    <!--定义扫描包，此包中定义的所有的程序类支持Annotation-->
    <context:component-scan base-package="com.xxxxx"/>

加入后如下：

四、在java文件中增加Annotation

目录格式如下

@Service注解服务层

@Service
public interface ICheckService {
    public void addCheckItem(CheckItem checkItem);
}

@Service
public class CheckServiceImpl implements ICheckService {
    @Autowired
    private ICheckInfoDao iCheckInfoDao;
    public void addCheckItem(CheckItem checkItem) {
        iCheckInfoDao.addCheckItem(checkItem);
    }
}

@Repository持久层

@Repository
public interface ICheckInfoDao {

    public void addUser(User user);

    public void addCheckItem(CheckItem checkItem);

    public void addCheckInfo(CheckInfo checkInfo);
}

@Repository
public class CheckInfoDaoImpl implements ICheckInfoDao {

    public void addUser(User user) {
        System.out.println("addUser:"+user.getUserName());
    }

    public void addCheckItem(CheckItem checkItem) {
        System.out.println("addCheckItem:title:"+checkItem.getTitle());
    }

    public void addCheckInfo(CheckInfo checkInfo) {

    }
}

四、测试(Junit)

ICheckService service = context.getBean("checkServiceImpl", CheckServiceImpl.class);

CheckItem checkItem = new CheckItem();
checkItem.setTitle("test title");
checkItem.setDetail("test detail");
service.addCheckItem(checkItem);