spring-ioc作业

• 1.基于配置文件
• 2.基于注解

• 1）实体类

package com.putao.domain;

public class SysUser {
    private String name;

    private Integer age;

    private String email;

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

    public void setAge(Integer age) {
        this.age = age;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    @Override
    public String toString() {
        return "SysUser{" +
                "name='" + name + ''' +
                ", age=" + age +
                ", email='" + email + ''' +
                '}';
    }
}

• 2）dao类及其实现类

package com.putao.dao;

import com.putao.domain.SysUser;

public interface UserDao {

    public void insertUser(SysUser user);
}

package com.putao.dao.impl;

import com.putao.dao.UserDao;
import com.putao.domain.SysUser;

public class OracleDaoImpl implements UserDao {
    @Override
    public void insertUser(SysUser user) {
        System.out.println("oracle的insertUser");
    }
}

package com.putao.dao.impl;

import com.putao.dao.UserDao;
import com.putao.domain.SysUser;

public class OracleDaoImpl implements UserDao {
    @Override
    public void insertUser(SysUser user) {
        System.out.println("oracle的insertUser");
    }
}

• 3）service及其实现类

package com.putao.service;

import com.putao.domain.SysUser;

public interface UserService {

    void  addUser(SysUser user);
}

package com.putao.service.impl;

import com.putao.dao.UserDao;
import com.putao.domain.SysUser;
import com.putao.service.UserService;

public class UserServiceImpl implements UserService {

    //引用类型，在xml文件给属性赋值，要求属性需要有set方法
    private UserDao dao = null;

    public void setDao(UserDao dao) {
        this.dao = dao;
    }

    @Override
    public void addUser(SysUser user) {
        //调用dao的方法
        dao.insertUser(user);
    }
}

• 4）配置文件

• 5）主类

package com.putao;

import com.putao.domain.SysUser;
import com.putao.service.UserService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyApp {
    public static void main(String[] args) {
        //从容器中获取UserService类型的对象，dao,service都是spring管理的
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService service = (UserService) ctx.getBean("userService");

        SysUser user = new SysUser();
        user.setName("lisi");
        user.setAge(20);
        service.addUser(user);

    }
}

• 1）实体类
  同上
• 2）dao类及其实现类
  dao类同上

package com.putao.dao.impl;

import com.putao.dao.UserDao;
import com.putao.domain.SysUser;
import org.springframework.stereotype.Repository;

@Repository("mysqlDao")
public class UserDaoImpl implements UserDao {
    @Override
    public void insertUser(SysUser user) {
        System.out.println("user插入到mysql数据库");
    }
}

package com.putao.dao.impl;

import com.putao.dao.UserDao;
import com.putao.domain.SysUser;
import org.springframework.stereotype.Repository;

@Repository("oracleDao")
public class OracleDaoImpl implements UserDao {
    @Override
    public void insertUser(SysUser user) {
        System.out.println("oracle的insertUser");
    }
}

• 3）service及其实现类
  service类同上

package com.putao.service.impl;

import com.putao.dao.UserDao;
import com.putao.domain.SysUser;
import com.putao.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

@Service("userService")
public class UserServiceImpl implements UserService {

    //引用类型，在xml文件给属性赋值，要求属性需要有set方法
    //byType
//    @Autowired
//    @Qualifier("mysqlDao")
    @Resource(name = "oracleDao")
    private UserDao dao = null;

    //可以不需要
    public void setDao(UserDao dao) {
        this.dao = dao;
    }

    @Override
    public void addUser(SysUser user) {
        //调用dao的方法
        dao.insertUser(user);
    }
}

• 4）配置文件

• 5）主类
  同上