applicationContext.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:p="http://www.springframework.org/schema/p"
       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">

   //掃描com.ssm包下所有帶註解的
    <context:component-scan base-package="com.ssm"/>



</beans>
 

//實體類 HelloWorld
HelloWorld.java

package com.ssm.beans;

import org.springframework.stereotype.Component;

/**
 * DateTime: 2016/11/2 10:03
 * 功能：
 * 思路：
 */

@Component("helloWorld")
public class HelloWorld {
    private String username;
    private String password;

    public HelloWorld(){

    }
    //public HelloWorld(final String username,final String password){
 

    //    this.username=username;this.password=password;
    //}

    public void show(){
        System.out.println("username:"+username+"  password:"+password);
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

//DAO層，主要與資料庫打交道，此處並沒有真正的插入資料庫，但操作原理體現出來了。

HelloWorldDAO.java

package com.ssm.DAO;

import com.ssm.beans.HelloWorld;
import org.springframework.stereotype.Repository;

/**
 * DateTime: 2016/11/2 19:55
 * 功能：
 * 思路：
 */

@Repository("daoSupport")
public class HelloWorldDAO {
    public Object save(final HelloWorld helloWorld) throws Exception {
        System.out.println("向資料庫中插入:"+helloWorld.getUsername()+"..."+helloWorld.getPassword());
        HelloWorld helloWorld1=new HelloWorld();

        //為了測試 將傳入的資料加工，比如傳入aaa,則返回aaaaaa
        helloWorld1.setUsername("new"+helloWorld.getUsername());
        helloWorld1.setPassword("new"+helloWorld.getPassword());
        return helloWorld1;
    }
}

//service層，與DAO層打交道，並將值返回給Controller

HelloWorldService.java

package com.ssm.service;

import com.ssm.DAO.HelloWorldDAO;
import com.ssm.beans.HelloWorld;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

/**
 * DateTime: 2016/11/2 19:53
 * 功能：
 * 思路：
 */

@Service("helloWorldService")
public class HelloWorldService {

    @Resource(name = "daoSupport")
    private HelloWorldDAO helloWorldDAO;

    public HelloWorld save(final HelloWorld helloWorld) throws Exception {
        return (HelloWorld) helloWorldDAO.save(helloWorld);
    }

}

//測試，這裡沒有使用Controller，所以直接查詢helloWorldService

package com.ssm.test;

import com.ssm.beans.HelloWorld;
import com.ssm.service.HelloWorldService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * DateTime: 2016/11/2 12:49
 * 功能：
 * 思路：
 */
public class HelloWorldTest {
    public static void main(String[] args) throws Exception {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
        HelloWorldService service=(HelloWorldService)applicationContext.getBean("helloWorldService");
        HelloWorld helloWorld1 = (HelloWorld) applicationContext.getBean("helloWorld");
        helloWorld1.setUsername("YEN");
        helloWorld1.setPassword("MY");

        HelloWorld result=service.save(helloWorld1);
        System.out.println("返回的資料");
        result.show();
    }
}