1.pom.xml文件详情

<properties>
     <!-- spring版本号 -->
     <spring.version>4.2.4.RELEASE</spring.version>

 </properties>

 <dependencies>
   <dependency>
     <groupId>junit</groupId>
     <artifactId>junit</artifactId>
     <version>3.8.1</version>
     <scope>test</scope>
   </dependency>

   <!-- 1.spring核心依赖 -->
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-core</artifactId>
     <version>${spring.version}</version>
   </dependency>
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-beans</artifactId>
     <version>${spring.version}</version>
   </dependency>
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-context</artifactId>
     <version>${spring.version}</version>
   </dependency>

   <!-- 2.spring dao依赖 -->
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-jdbc</artifactId>
     <version>${spring.version}</version>
   </dependency>
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-tx</artifactId>
     <version>${spring.version}</version>
   </dependency>

   <!-- 3.spring web依赖 -->
       <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-web</artifactId>
     <version>${spring.version}</version>
   </dependency>
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-webmvc</artifactId>
     <version>${spring.version}</version>
   </dependency>

   <!-- 4.Spring test依赖：方便做单元测试和集成测试  -->
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>spring-test</artifactId>
     <version>${spring.version}</version>
   </dependency>

 </dependencies>

2.方式一：基于xml方式

(1).UserService接口

public interface UserService {
    public void insert();
}

(2).UserServiceImpl实现类

public class UserServiceImpl implements UserService{
    private String name;

    public void setName(String name) {
        this.name = name;
    }

    public void insert() {
        // TODO Auto-generated method stub
        System.out.println(name+"业务处理成功");
    }
}

(3).配置application.xml

<?xml version="1.0" encoding="UTF-8"?>

<!-- xml文件头添加shema约束 -->
<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">

     <!-- 配置，将实现类的对象创建交给Spring管理
        bean标签：
            id:给bean起个名字，唯一，不能重复，不能出现特殊字符，就看做根据面向接口编程new出来的实例
            class：类的全路径，底层根据全路径生成实例
     -->
     <bean id="userService"  class="cn.com.sinodata.service.UserServiceImpl">
         <!-- 属性依赖注入，底层会自动封装，只要在dao实现类提供属性和set方法就行 -->
         <property name="name" value="张三"></property>
     </bean>

</beans>

(4).main启动类

public class SpringDemoMain {
    public static void main(String[] args) {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("application.xml");
        UserService userService = (UserService)applicationContext.getBean("userService");
        userService.insert();
    }
}

3.方式二：.基于注解方式

原理:使用注解方式无需在XML中配置一个Bean引用，使用时更加简单和方便。

第一步:在管理的bean上加上注解@Component (Spring2.5以后引入)

第二步:applicationContext.xml中注解开启和注解扫描(注解开启和注解扫描后,扫描的bean会被自动纳入Spring容器管理)

(1).PeoperService接口

public interface PeoperService {
    public void update();
}

(2).PeoperServiceImpl实现类

@Component
public class PeoperServiceImpl implements PeoperService{
    private String name;

    public void setName(String name){
        this.name = name;
    }

    public void update() {
        // TODO Auto-generated method stub
        System.out.println(name+"信息更新成功");
    }
}

(3).配置application.xml

<?xml version="1.0" encoding="UTF-8"?>

      <!-- xml文件头添加shema约束        引入context名称空间 -->
<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">

    <!--开启spring的注解功能,配置扫描包的时候,spring会自动开启注解功能,故此项可不配置-->
    <!-- <context:annotation-config/> -->

    <!-- 配置bean组件扫描 此时会自动扫描base-package包以及子包下面含有@Component注解的bean,纳入spring容器管理-->
      <context:component-scan base-package="cn.com.sinodata.service"/>

</beans>

(4).main启动类

public class SpringDemoMain {
    public static void main(String[] args) {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("application.xml");
        PeoperServiceImpl peoperServiceImpl = (PeoperServiceImpl)applicationContext.getBean("peoperServiceImpl");

        peoperServiceImpl.setName("css");
        peoperServiceImpl.update();
    }
}