4Spring+MyBatis增删改查

Posted 2020-07-13 红酒人生

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0、oracle数据库脚本

 1  create table userinfo
 2 (id number(4),
 3 name varchar2(50),
 4 password varchar2(20
 5 telephone varchar2(15),
 6 isadmin varchar2(5));
 7 
 8  --4.2 用户表序列
 9  create sequence seq_userinfo;
10  alter table userinfo add constraint pk_userinfo_id primary key(id);
11 
12  insert into userinfo values(seq_userinfo.nextval,\'holly\',\'123\',\'134518024
13 \',\'是\');
14  commit;

userinfo.sql

1、创建如下项目结构

2、在com.bean包下创建UserInfo.java

 1 package com.bean;
 2 
 3 public class UserInfo {
 4     private Integer id;
 5     private String name;
 6     private String password;
 7     private String telephone;
 8     private String isadmin;
 9     
10     public UserInfo() {
11         
12     }
13     public UserInfo(Integer id, String name, String password, String telephone,
14             String isadmin) {
15         this.id = id;
16         this.name = name;
17         this.password = password;
18         this.telephone = telephone;
19         this.isadmin = isadmin;
20     }
21     public Integer getId() {
22         return id;
23     }
24     public void setId(Integer id) {
25         this.id = id;
26     }
27     public String getName() {
28         return name;
29     }
30     public void setName(String name) {
31         this.name = name;
32     }
33     public String getPassword() {
34         return password;
35     }
36     public void setPassword(String password) {
37         this.password = password;
38     }
39     public String getTelephone() {
40         return telephone;
41     }
42     public void setTelephone(String telephone) {
43         this.telephone = telephone;
44     }
45     public String getIsadmin() {
46         return isadmin;
47     }
48     public void setIsadmin(String isadmin) {
49         this.isadmin = isadmin;
50     }
51     @Override
52     public String toString() {
53         return "UserInfo [id=" + id + ", isadmin=" + isadmin + ", name=" + name
54                 + ", password=" + password + ", telephone=" + telephone + "]";
55     }
56     
57 
58 }

UserInfo.java

3、在com.dao包下创建UserInfoDao.java

 1 package com.dao;
 2 
 3 import java.util.List;
 4 
 5 import com.bean.UserInfo;
 6 /**
 7  * mybatis映射文件的dao接口
 8  * @author pc
 9  *
10  */
11 public interface UserInfoDao {
12     public List<UserInfo> findAll();  //查所有
13     public UserInfo findUser(UserInfo user);//条件查询
14     public void insertUser(UserInfo user); //插入对象
15     public void updateUser(UserInfo user); //修改对象
16     public void deleteUser(int id); //条件删除
17 
18 }

UserInfoDao.java

4、在com.dao包下创建UserInfoDao.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 3 <mapper namespace="com.dao.UserInfoDao">
 4   <select id="findAll" resultType="user">
 5     select * from userinfo
 6   </select>
 7   <select id="findUser" resultType="user" parameterType="user">
 8      select * from userinfo where name=#{name} and password=#{password}
 9   </select>
10   <insert id="insertUser" parameterType="user">
11     insert into userinfo values(seq_userinfo.nextval,#{name},#{password},#{telephone},#{isadmin})
12   </insert>
13   <update id="updateUser" parameterType="user">
14     update userinfo set name=#{name},password=#{password},telephone=#{telephone},isadmin=#{isadmin} where id=#{id}
15   </update>
16   
17   <delete id="deleteUser" parameterType="int">
18     delete from userinfo where id=#{id}
19   </delete>
20 </mapper>

UserInfoDao.xml

5、在src包下创建mybatis-config.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd" >
 3 <configuration>
 4   <!-- mybatis映射文件的别名配置 -->
 5   <typeAliases>
 6     <typeAlias type="com.bean.UserInfo" alias="user"/>
 7   </typeAliases>
 8   
 9   <!-- 注册mybatis的映射文件 -->
10   <mappers>
11     <mapper resource="com/dao/UserInfoDao.xml"/>
12   </mappers>
13 </configuration>

mybatis-config.xml

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

  1 package com.dao.impl;
  2 
  3 import java.util.List;
  4 
  5 import org.mybatis.spring.SqlSessionTemplate;
  6 
  7 import com.bean.UserInfo;
  8 import com.dao.UserInfoDao;
  9 /**
 10  * 数据dao接口实现类
 11  * @author pc
 12  *
 13  */
 14 public class UserInfoDaoImpl implements UserInfoDao {
 15     private SqlSessionTemplate sqlSession;
 16     /**
 17      * 根据id删除
 18      */
 19     public void deleteUser(int id) {
 20         //获取代理对象
 21         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
 22         try {
 23             dao.deleteUser(id); //调用代理对象映射的dao接口删除
 24             sqlSession.commit(); //提交事务
 25             System.out.println("删除成功");
 26         } catch (Exception e) {
 27             System.out.println("删除失败");
 28             e.printStackTrace();
 29         }
 30     }
 31     /**
 32      * 查询所有
 33      */
 34     public List<UserInfo> findAll() {
 35         //获取代理对象
 36         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
 37         List<UserInfo> list=null;
 38         try {
 39              list=dao.findAll();
 40             System.out.println("查询所有成功");
 41         } catch (Exception e) {
 42             System.out.println("查询所有失败");
 43             e.printStackTrace();
 44         }
 45         return list;
 46     }
 47     
 48     /**
 49      * 条件查询
 50      */
 51     public UserInfo findUser(UserInfo user) {
 52         //获取代理对象
 53         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
 54         UserInfo userinfo=null;
 55         try {
 56             if(user!=null){
 57                 userinfo=dao.findUser(user);
 58                 System.out.println("条件查询成功");
 59             }else{
 60                 System.out.println("条件查询参数为空");
 61             }
 62         } catch (Exception e) {
 63             System.out.println("条件查询失败");
 64             e.printStackTrace();
 65         }
 66         return userinfo;
 67     }
 68 /**
 69  *添加
 70  */
 71     public void insertUser(UserInfo user) {
 72         //获取代理对象
 73         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
 74         try {
 75             if(user!=null){
 76                 dao.insertUser(user); 
 77                 sqlSession.commit(); //提交事务
 78                 System.out.println("添加成功");
 79             }else{
 80                 System.out.println("添加参数为空");
 81             }
 82         } catch (Exception e) {
 83             System.out.println("添加失败");
 84             e.printStackTrace();
 85         }
 86         
 87     }
 88    /**
 89     * 修改对象
 90     */
 91     public void updateUser(UserInfo user) {
 92         //获取代理对象
 93         UserInfoDao dao=sqlSession.getMapper(UserInfoDao.class);
 94         try {
 95             if(user!=null){
 96                 dao.updateUser(user); 
 97                 sqlSession.commit(); //提交事务
 98                 System.out.println("修改成功");
 99             }else{
100                 System.out.println("修改参数为空");
101             }
102         } catch (Exception e) {
103             System.out.println("修改失败");
104             e.printStackTrace();
105         }
106     }
107 public SqlSessionTemplate getSqlSession() {
108     return sqlSession;
109 }
110 public void setSqlSession(SqlSessionTemplate sqlSession) {
111     this.sqlSession = sqlSession;
112 }
113 
114     
115 }

UserInfoDaoImpl.java

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

 1 package com.service;
 2 
 3 import java.util.List;
 4 
 5 import com.bean.UserInfo;
 6 /**
 7  * 服务接口
 8  * @author pc
 9  *
10  */
11 public interface UserInfoService {
12     public List<UserInfo> findAll();  //查所有
13     public UserInfo findUser(UserInfo user);//条件查询
14     public void insertUser(UserInfo user); //插入对象
15     public void updateUser(UserInfo user); //修改对象
16     public void deleteUser(int id); //条件删除
17 
18 
19 }

UserInfoService.java

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

 1 package com.service.impl;
 2 
 3 import java.util.List;
 4 
 5 import com.bean.UserInfo;
 6 import com.dao.UserInfoDao;
 7 import com.dao.impl.UserInfoDaoImpl;
 8 import com.service.UserInfoService;
 9 
10 public class UserInfoServiceImpl implements UserInfoService{
11     //引入数据层接口
12     UserInfoDao dao=new UserInfoDaoImpl();
13     /**
14      * 删除
15      */
16     public void deleteUser(int id) {
17          dao.deleteUser(id);
18     }
19     /**
20      * 查所有
21      */
22     public List<UserInfo> findAll() {
23         return dao.findAll();
24     }
25   /**
26    * 条件查询
27    */
28     public UserInfo findUser(UserInfo user) {
29         return dao.findUser(user);
30     }
31    /**
32     * 插入对象
33     */
34     public void insertUser(UserInfo user) {
35         dao.insertUser(user);
36     }
37     /**
38      * 修改对象
39      */
40     public void updateUser(UserInfo user) {
41         dao.updateUser(user);
42     }
43     
44     
45     public UserInfoDao getDao() {
46         return dao;
47     }
48     public void setDao(UserInfoDao dao) {
49         this.dao = dao;
50     }
51 
52 }

UserInfoServiceImpl.java

9、在src下创建applicationContext.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <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 ">
 3   <!-- 1.配置数据源 -->
 4   <bean id="oracleDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
 5     <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
 6     <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"/>
 7     <property name="username" value="scott"/>
 8     <property name="password" value="tiger"/>
 9   </bean>
10   
11   <!--2.在sqlSessionFactory中注入数据源  -->
12   <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
13      <!-- 注入数据源 -->
14      <property name="dataSource" ref="oracleDataSource"/>
15      
16      <!-- 引用mybatis的主配置文件,(注册dao映射文件) -->
17      <property name="configLocation">
18        <value>classpath:mybatis-config.xml</value>
19      </property>
20   </bean>
21   
22   <!-- 3.用构造获取sqlSessionTemplate -->
23   <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
24      <constructor-arg ref="sqlSessionFactory"/>
25   </bean>
26   
27   <!-- 4.dao注入sqlSesson -->
28   <bean id="userdao" class="com.dao.impl.UserInfoDaoImpl">
29     <property name="sqlSession" ref="sqlSessionTemplate"mybatis怎么进行增删改查
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