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容器接口与实现类

![](http://img.1024phper.com/blog21040614284183635)
## 使用maven来构建项目。

![](http://img.1024phper.com/blog21033123540815423)

![](http://img.1024phper.com/blog21033123540815553)

![](http://img.1024phper.com/blog21033123540889611)

![](http://img.1024phper.com/blog21033123540715604)

![](http://img.1024phper.com/blog21033123540741095)

![](http://img.1024phper.com/blog21033123581654303)

## 修改pom.xml文件，加入相关依赖

目前先只加

```xml
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.2.6.RELEASE</version>
</dependency>
```

## 创建UserService以及UserServiceImpl类

```java
public interface UserService {
    void run ();
}
```

```java
public class UserServiceImpl implements UserService {
    @Override
    public void run() {
        System.out.println("Hello, I'm running!");
    }
}
```

## 创建applicationContext.xml文件

![](http://img.1024phper.com/blog21040100155176384)

```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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="userService" class="com.studyspring.service.impl.UserServiceImpl" />
</beans>
```

## 编写测试

```java
public class TestUserService {

@Test
    public void run ()
    {
        String   resource    = "applicationContext.xml";
        ApplicationContext context     = new ClassPathXmlApplicationContext(resource);
        UserService  userService = (UserService) context.getBean("userService");
        userService.run();
    }
}
```

容器接口与实现类

Spring

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入门---新建Spring工程

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