4、Spring+MyBatis增删改查

0、oracle数据库脚本

  create table userinfo
 (id number(4),
 name varchar2(50),
 password varchar2(20
 telephone varchar2(15),
 isadmin varchar2(5));

  --4.2 用户表序列
  create sequence seq_userinfo;
  alter table userinfo add constraint pk_userinfo_id primary key(id);

  insert into userinfo values(seq_userinfo.nextval,'holly','','134518024
 ','是');
  commit;

userinfo.sql

1、创建如下项目结构

2、在com.bean包下创建UserInfo.java

 package com.bean;

 public class UserInfo {
     private Integer id;
     private String name;
     private String password;
     private String telephone;
     private String isadmin;

     public UserInfo() {

     }
     public UserInfo(Integer id, String name, String password, String telephone,
             String isadmin) {
         this.id = id;
         this.name = name;
         this.password = password;
         this.telephone = telephone;
         this.isadmin = isadmin;
     }
     public Integer getId() {
         return id;
     }
     public void setId(Integer id) {
         this.id = id;
     }
     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public String getPassword() {
         return password;
     }
     public void setPassword(String password) {
         this.password = password;
     }
     public String getTelephone() {
         return telephone;
     }
     public void setTelephone(String telephone) {
         this.telephone = telephone;
     }
     public String getIsadmin() {
         return isadmin;
     }
     public void setIsadmin(String isadmin) {
         this.isadmin = isadmin;
     }
     @Override
     public String toString() {
         return "UserInfo [id=" + id + ", isadmin=" + isadmin + ", name=" + name
                 + ", password=" + password + ", telephone=" + telephone + "]";
     }

 }

UserInfo.java

3、在com.dao包下创建UserInfoDao.java

 package com.dao;

 import java.util.List;

 import com.bean.UserInfo;
 /**
  * mybatis映射文件的dao接口
  * @author pc
  *
  */
 public interface UserInfoDao {
     public List<UserInfo> findAll();  //查所有
     public UserInfo findUser(UserInfo user);//条件查询
     public void insertUser(UserInfo user); //插入对象
     public void updateUser(UserInfo user); //修改对象
     public void deleteUser(int id); //条件删除

 }

UserInfoDao.java

4、在com.dao包下创建UserInfoDao.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.dao.UserInfoDao">
   <select id="findAll" resultType="user">
     select * from userinfo
   </select>
   <select id="findUser" resultType="user" parameterType="user">
      select * from userinfo where name=#{name} and password=#{password}
   </select>
   <insert id="insertUser" parameterType="user">
     insert into userinfo values(seq_userinfo.nextval,#{name},#{password},#{telephone},#{isadmin})
   </insert>
   <update id="updateUser" parameterType="user">
     update userinfo set name=#{name},password=#{password},telephone=#{telephone},isadmin=#{isadmin} where id=#{id}
   </update>

   <delete id="deleteUser" parameterType="int">
     delete from userinfo where id=#{id}
   </delete>
 </mapper>

UserInfoDao.xml

5、在src包下创建mybatis-config.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd" >
 <configuration>
   <!-- mybatis映射文件的别名配置 -->
   <typeAliases>
     <typeAlias type="com.bean.UserInfo" alias="user"/>
   </typeAliases>

   <!-- 注册mybatis的映射文件 -->
   <mappers>
     <mapper resource="com/dao/UserInfoDao.xml"/>
   </mappers>
 </configuration>

mybatis-config.xml

6、在com.dao.impl包下创建UserInfoDaoImpl.java

 package com.dao.impl;

 import java.util.List;

 import org.mybatis.spring.SqlSessionTemplate;

 import com.bean.UserInfo;
 import com.dao.UserInfoDao;
 /**
  * 数据dao接口实现类
  * @author pc
  *
  */
 public class UserInfoDaoImpl implements UserInfoDao {
     private SqlSessionTemplate sqlSession;
     /**
      * 根据id删除
      */
     public void deleteUser(int id) {
         //获取代理对象
         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
         try {
             dao.deleteUser(id); //调用代理对象映射的dao接口删除
             sqlSession.commit(); //提交事务
             System.out.println("删除成功");
         } catch (Exception e) {
             System.out.println("删除失败");
             e.printStackTrace();
         }
     }
     /**
      * 查询所有
      */
     public List<UserInfo> findAll() {
         //获取代理对象
         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
         List<UserInfo> list=null;
         try {
              list=dao.findAll();
             System.out.println("查询所有成功");
         } catch (Exception e) {
             System.out.println("查询所有失败");
             e.printStackTrace();
         }
         return list;
     }

     /**
      * 条件查询
      */
     public UserInfo findUser(UserInfo user) {
         //获取代理对象
         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
         UserInfo userinfo=null;
         try {
             if(user!=null){
                 userinfo=dao.findUser(user);
                 System.out.println("条件查询成功");
             }else{
                 System.out.println("条件查询参数为空");
             }
         } catch (Exception e) {
             System.out.println("条件查询失败");
             e.printStackTrace();
         }
         return userinfo;
     }
 /**
  *添加
  */
     public void insertUser(UserInfo user) {
         //获取代理对象
         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
         try {
             if(user!=null){
                 dao.insertUser(user);
                 sqlSession.commit(); //提交事务
                 System.out.println("添加成功");
             }else{
                 System.out.println("添加参数为空");
             }
         } catch (Exception e) {
             System.out.println("添加失败");
             e.printStackTrace();
         }

     }
    /**
     * 修改对象
     */
     public void updateUser(UserInfo user) {
         //获取代理对象
         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
         try {
             if(user!=null){
                 dao.updateUser(user);
                 sqlSession.commit(); //提交事务
                 System.out.println("修改成功");
             }else{
                 System.out.println("修改参数为空");
             }
         } catch (Exception e) {
             System.out.println("修改失败");
             e.printStackTrace();
         }
     }
 public SqlSessionTemplate getSqlSession() {
     return sqlSession;
 }
 public void setSqlSession(SqlSessionTemplate sqlSession) {
     this.sqlSession = sqlSession;
 }

 }

UserInfoDaoImpl.java

7、在com.service包下创建UserInfoService.java

 package com.service;

 import java.util.List;

 import com.bean.UserInfo;
 /**
  * 服务接口
  * @author pc
  *
  */
 public interface UserInfoService {
     public List<UserInfo> findAll();  //查所有
     public UserInfo findUser(UserInfo user);//条件查询
     public void insertUser(UserInfo user); //插入对象
     public void updateUser(UserInfo user); //修改对象
     public void deleteUser(int id); //条件删除

 }

UserInfoService.java

8、在com.service.impl包下创建UserInfoServiceImpl.java

 package com.service.impl;

 import java.util.List;

 import com.bean.UserInfo;
 import com.dao.UserInfoDao;
 import com.dao.impl.UserInfoDaoImpl;
 import com.service.UserInfoService;

 public class UserInfoServiceImpl implements UserInfoService{
     //引入数据层接口
     UserInfoDao dao=new UserInfoDaoImpl();
     /**
      * 删除
      */
     public void deleteUser(int id) {
          dao.deleteUser(id);
     }
     /**
      * 查所有
      */
     public List<UserInfo> findAll() {
         return dao.findAll();
     }
   /**
    * 条件查询
    */
     public UserInfo findUser(UserInfo user) {
         return dao.findUser(user);
     }
    /**
     * 插入对象
     */
     public void insertUser(UserInfo user) {
         dao.insertUser(user);
     }
     /**
      * 修改对象
      */
     public void updateUser(UserInfo user) {
         dao.updateUser(user);
     }

     public UserInfoDao getDao() {
         return dao;
     }
     public void setDao(UserInfoDao dao) {
         this.dao = dao;
     }

 }

UserInfoServiceImpl.java

9、在src下创建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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd ">
   <!-- 1.配置数据源 -->
   <bean id="oracleDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
     <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
     <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"/>
     <property name="username" value="scott"/>
     <property name="password" value="tiger"/>
   </bean>

   <!--2.在sqlSessionFactory中注入数据源  -->
   <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
      <!-- 注入数据源 -->
      <property name="dataSource" ref="oracleDataSource"/>

      <!-- 引用mybatis的主配置文件,(注册dao映射文件) -->
      <property name="configLocation">
        <value>classpath:mybatis-config.xml</value>
      </property>
   </bean>

   <!-- 3.用构造获取sqlSessionTemplate -->
   <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
      <constructor-arg ref="sqlSessionFactory"/>
   </bean>

   <!-- 4.dao注入sqlSesson -->
   <bean id="userdao" class="com.dao.impl.UserInfoDaoImpl">
     <property name="sqlSession" ref="sqlSessionTemplate"/>
   </bean>

   <!-- 5.service注入dao -->
   <bean id="servicedao" class="com.service.impl.UserInfoServiceImpl">
     <property name="dao" ref="userdao"/>
   </bean>
 </beans>

applicationContext.xml

10、在com.test包下创建Test.java

 package com.test;

 import java.util.List;

 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.bean.UserInfo;
 import com.service.impl.UserInfoServiceImpl;

 public class Test {

     /**
      * @param args
      */
     public static void main(String[] args) {
         ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
         UserInfoServiceImpl serviceImpl=(UserInfoServiceImpl) ac.getBean("servicedao");
         List<UserInfo> list=serviceImpl.findAll();
         if(list!=null){
             for (UserInfo user : list) {
                 System.out.println(user);
             }
         }else{

         }

     }

 }

Test.java

11、运行效果：