mybatis 的配置文件及简单test

1... sqlMapperConfig.xml (配置：数据源和映射文件 )

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE configuration
 3         PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
 4         "http://mybatis.org/dtd/mybatis-3-config.dtd">
 5 <configuration>
 6     <environments default="development">
 7         <environment id="development">
 8             <transactionManager type="JDBC" />
 9             <dataSource type="POOLED">
10                 <property name="driver" value="com.mysql.jdbc.Driver" />
11                 <property name="url" value="jdbc:mysql://127.0.0.1:3306/studentdb?characterEncoding=utf8" />
12                 <property name="username" value="root" />
13                 <property name="password" value="wsc" />
14             </dataSource>
15         </environment>
16     </environments>
17     <!--映射文件路径-->
18     <mappers>
19         <mapper resource="com/wsc/dao/StudentMapper.xml"></mapper>
20         <!--        <mapper class="com/wsc/Mapper.xml"></mapper>-->
21     </mappers>
22 </configuration>

sqlMapperConfig.xml

2...StudentMapper.xml （配置：SQL语句）

 1 <?xml version="1.0" encoding="utf-8" ?>
 2 <!DOCTYPE mapper
 3         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 4         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 5 <mapper namespace="Student">
 6     <!--    查询所有-->
 7     <select id="findAll" resultType="Student">
 8         SELECT * FROM student;
 9     </select>
10     <!--    通过id查询-->
11     <select id="selectById" resultType="Student" parameterType="java.lang.Integer">
12         SELECT * FROM student where studentNo=#{studentNo};
13     </select>
14     <!--    删除通过id-->
15     <delete id="drop"  parameterType="java.lang.Integer">
16        Delete from student where studentNo=#{studentNo};
17     </delete>
18     <!--    添加-->
19     <insert id="add" parameterType="Student">
20             insert into student values (null,#{studentName},#{age},null,#{classNo});
21     </insert>
22     <!--    修改数据-->
23     <update id="change" parameterType="Student" >
24         update student set studentName=#{studentName},age=#{age},boreDate=#{boreDate},classNo=#{classNo}  where studentNo=#{studentNo};
25     </update>
26     <!--    模糊查询-->
27     <select id="queryByName" resultType="Student" parameterType="java.lang.String">
28         select * from student where studentName like "%"#{studentName}"%";
29     </select>
30 </mapper>

StudentMapper.xml

3...pom.xml 配置文件

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <modelVersion>4.0.0</modelVersion>
 6 
 7     <groupId>testmybatis</groupId>
 8     <artifactId>testmybatis04</artifactId>
 9     <version>1.0-SNAPSHOT</version>
10 
11 
12     <properties>
13         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
14         <maven.compiler.source>1.8</maven.compiler.source>
15         <maven.compiler.target>1.8</maven.compiler.target>
16     </properties>
17     <dependencies>
18         <!--单元测试-->
19         <dependency>
20             <groupId>junit</groupId>
21             <artifactId>junit</artifactId>
22             <version>4.12</version>
23         </dependency>
24         <!--mysql驱动-->
25         <dependency>
26             <groupId>mysql</groupId>
27             <artifactId>mysql-connector-java</artifactId>
28             <version>5.1.6</version>
29         </dependency>
30         <!--mybatis的依赖-->
31         <dependency>
32             <groupId>org.mybatis</groupId>
33             <artifactId>mybatis</artifactId>
34             <version>3.4.5</version>
35         </dependency>
36          <!--日志资料-->
37         <dependency>
38             <groupId>log4j</groupId>
39             <artifactId>log4j</artifactId>
40             <version>1.2.17</version>
41         </dependency>
42     </dependencies>
43 </project>

pom.xml

4...test01

  1 package com.wsc.testMybatis;
  2 
  3 import com.wsc.domain.Student;
  4 import com.wsc.dao.StudentDao;
  5 import com.wsc.dao.daoImpl.StudentDaoImpl;
  6 import org.apache.ibatis.session.SqlSessionFactory;
  7 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
  8 import org.junit.Before;
  9 import org.junit.Test;
 10 
 11 import java.io.InputStream;
 12 
 13 import java.util.Date;
 14 import java.util.List;
 15 
 16 /**
 17  * @version 1.0
 18  * @ClassName TestStudent
 19  * @Description TODO
 20  * @Author WSC
 21  * @Date 2019/6/29 17:01
 22  **/
 23 public class TestStudent {
 24     public SqlSessionFactory sessionFactory=null;
 25     @Before
 26     public void init(){
 27         InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream("SqlMapperConfig.xml");
 28         sessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
 29     }
 30     //查询方法
 31     @Test
 32     public void findAll(){
 33         StudentDao studentDao = new StudentDaoImpl(sessionFactory);
 34         List<Student> all = studentDao.findAll();
 35         for(Student list:all){
 36             System.out.println(list);
 37         }
 38     }
 39     /**
 40      * 通过id删除
 41      *
 42      */
 43     @Test
 44     public void drop(){
 45         StudentDao studentDao = new StudentDaoImpl(sessionFactory);
 46         studentDao.drop(6);
 47 
 48     };
 49 
 50     /**
 51      * 通过id 查询
 52      *
 53      */
 54     @Test
 55     public void selectId(){
 56         StudentDao studentDao = new StudentDaoImpl(sessionFactory);
 57         List<Student> students = studentDao.selectId(3);
 58         System.out.println(students);
 59     }
 60 
 61     /**
 62      * 通过对象 添加数据
 63      *
 64      */
 65     @Test
 66     public void add(){
 67         StudentDao studentDao = new StudentDaoImpl(sessionFactory);
 68         Student stu= new Student();
 69 
 70         stu.setStudentName("李国");
 71         stu.setAge(30);
 72 //        Date date = new Date();
 73 //        SimpleDateFormat simpleDateFormat = new SimpleDateFormat();
 74 //        String format = simpleDateFormat.format(date);
 75 
 76         stu.setClassNo(2);
 77         studentDao.add(stu);
 78     }
 79 
 80     /**
 81      * 模糊查询
 82      *
 83      */
 84     @Test
 85     public void selectByName(){
 86         StudentDao studentDao = new StudentDaoImpl(sessionFactory);
 87         List<Student> list = studentDao.selectByName("李");
 88         for(Student stu:list){
 89             System.out.println(stu);
 90         }
 91     }
 92 
 93     /**
 94      * 通过id 修改数据
 95      *
 96      */
 97     @Test
 98     public void change(){
 99         StudentDao studentDao = new StudentDaoImpl(sessionFactory);
100         Student stu= new Student();
101         stu.setStudentNo(19);
102         stu.setStudentName("国21家");
103         stu.setAge(23);
104         Date date = new Date();
105         stu.setBoreDate(date);
106         stu.setClassNo(1);
107         studentDao.change(stu);
108     }
109 }

test01

5...test02

  1 package com.wsc.dao;
  2 
  3 import entity.Student;
  4 import org.apache.ibatis.session.SqlSession;
  5 import org.apache.ibatis.session.SqlSessionFactory;
  6 import org.apache.ibatis.session.SqlSessionFactoryBuilder;
  7 import org.junit.Test;
  8 
  9 import java.io.InputStream;
 10 import java.util.Date;
 11 import java.util.List;
 12 
 13 /**
 14  * @version 1.0
 15  * @ClassName StudentTest
 16  * @Description TODO
 17  * @Author WSC
 18  * @Date 2019/6/29 8:42
 19  **/
 20 public class StudentTest {
 21     @Test
 22     public void test(){
 23         // 1...流   加载配置文件 SqlCfig
 24         InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream("SqlCfig.xml");
 25       //工厂类 实现创建 工厂类实例对象
 26         SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
 27       //工厂类实例对象调 build 方法 创建
 28         SqlSessionFactory build = sqlSessionFactoryBuilder.build(resourceAsStream);
 29         SqlSession sqlSession = build.openSession();
 30         List<Object> objects = sqlSession.selectList("wsc.findAll");
 31         for(Object obj:objects){
 32             System.out.println(obj);
 33         }
 34         //关闭资源
 35         sqlSession.close();
 36     }
 37     //删除
 38     @Test
 39     public void drop(){
 40         // 1...流   加载配置文件 SqlCfig
 41         InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream("SqlCfig.xml");
 42         //工厂类 实现创建 工厂类实例对象
 43         SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
 44         //工厂类实例对象调 build 方法 创建
 45         SqlSessionFactory build = sqlSessionFactoryBuilder.build(resourceAsStream);
 46         SqlSession sqlSession = build.openSession();
 47 
 48 //        Student stu= new Student();
 49 //        stu.setStudentNo(1);
 50         int delete = sqlSession.delete("wsc.drop",1);
 51         System.out.println(delete);
 52         sqlSession.commit();
 53 //        List<Object> objects = sqlSession.selectList("wsc.findAll");
 54 //        for(Object obj:objects){
 55 //            System.out.println(obj);
 56 //        }
 57         //关闭资源
 58         sqlSession.close();
 59     }
 60     //查询by id
 61     @Test
 62     public void selectById(){
 63         // 1...流   加载配置文件 SqlCfig
 64         //1 获取流对象
 65         InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream("SqlCfig.xml");
 66         //工厂类 实现创建 工厂类实例对象
 67         // 2获得sqlSessionFactory对象
 68         SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
 69         //工厂类实例对象调 build 方法 创建
 70 
 71         SqlSessionFactory build = sqlSessionFactoryBuilder.build(resourceAsStream);
 72         // 3获得sqlSession对象
 73         SqlSession sqlSession = build.openSession();
 74 
 75         Student student= new Student();
 76          student.setStudentNo(2);
 77         Object o = sqlSession.selectOne("wsc.selectById", student);
 78         System.out.println(o);
 79 
 80 //        List<Object> objects = sqlSession.selectList("wsc.findAll");
 81 //        for(Object obj:objects){
 82 //            System.out.println(obj);
 83 //        }
 84         //关闭资源
 85         sqlSession.close();
 86     }
 87     //添加数据
 88     @Test
 89     public void addById(){
 90         // 1...流   加载配置文件 SqlCfig
 91         InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream("SqlCfig.xml");
 92         //工厂类 实现创建 工厂类实例对象
 93         SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
 94         //工厂类实例对象调 build 方法 创建
 95         SqlSessionFactory build = sqlSessionFactoryBuilder.build(resourceAsStream);
 96         SqlSession sqlSession = build.openSession();
 97 
 98         Student stu= new Student();
 99 
100         stu.setStudentName("李");
101         stu.setAge(30);
102 //        Date date = new Date();
103 //        SimpleDateFormat simpleDateFormat = new SimpleDateFormat();
104 //        String format = simpleDateFormat.format(date);
105 
106         stu.setClassNo(2);
107 
108         int insert = sqlSession.insert("wsc.add", stu);
109         System.out.println(insert);
110         //手动提交方式
111         sqlSession.commit();
112 //        List<Object> objects = sqlSession.selectList("wsc.findAll");
113 //        for(Object obj:objects){
114 //            System.out.println(obj);
115 //        }
116         //关闭资源
117         sqlSession.close();
118     }
119     //通过姓名模糊查询
120     @Test
121     public void queryByName(){
122         // 1...流   加载配置文件 SqlCfig
123         InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream("SqlCfig.xml");
124         //工厂类 实现创建 工厂类实例对象
125         SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
126         //工厂类实例对象调 build 方法 创建
127         SqlSessionFactory build = sqlSessionFactoryBuilder.build(resourceAsStream);
128         SqlSession sqlSession = build.openSession();
129 
130 //        Student student= new Student();
131 //        student.setStudentNo(2);
132         List<Object> list = sqlSession.selectList("wsc.queryByName", "a");
133 
134         for(Object obj:list){
135             System.out.println(obj);
136         }
137 
138 //        List<Object> objects = sqlSession.selectList("wsc.findAll");
139 //
140         //关闭资源
141         sqlSession.close();
142     }
143     //修改数据
144     @Test
145     public void change(){
146         // 1...流   加载配置文件 SqlCfig
147         InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream("SqlCfig.xml");
148         //工厂类 实现创建 工厂类实例对象
149         SqlSessionFactoryBuilder sqlSessionFactoryBuilder = new SqlSessionFactoryBuilder();
150         //工厂类实例对象调 build 方法 创建
151         SqlSessionFactory build = sqlSessionFactoryBuilder.build(resourceAsStream);
152         SqlSession sqlSession = build.openSession();
153 
154         Student stu= new Student();
155         stu.setStudentNo(3);
156         stu.setStudentName("国30家");
157         stu.setAge(20);
158         Date date = new Date();
159 //        SimpleDateFormat simpleDateFormat = new SimpleDateFormat();
160 //        String format = simpleDateFormat.format(date);
161         stu.setBoreDate(date);
162         stu.setClassNo(1);
163 
164         sqlSession.update("wsc.change", stu);
165 //        System.out.println(insert);
166         //手动提交方式
167         sqlSession.commit();
168 //        List<Object> objects = sqlSession.selectList("wsc.findAll");
169 //        for(Object obj:objects){
170 //            System.out.println(obj);
171 //        }
172         //关闭资源
173         sqlSession.close();
174     }
175 }

test02

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原文地址：https://www.cnblogs.com/wangshichang/p/11364295.html

mybatis 的 配置文件及简单test

mybatis 的配置文件及简单test