mybatis-java1234一

 

一,简单增删改代码实现

package com.mybatis.mapper;

import java.util.List;

import com.mybatis.model.Student;

public interface StudentMapper {

    public int add(Student student);
    
    public int update(Student student);
    
    public int delete(Integer id);
    
    public Student findById(Integer id);
    
    public List<Student> findAll();
}

<?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.mybatis.mapper.StudentMapper">

    <resultMap type="student" id="studentResult">
        <id property="id" column="id"/>
        <result property="name" column="name"/>
        <result property="age" column="age"/>
    </resultMap>
    
    <insert id="add" parameterType="student"  >
        insert into t_student values(null,#{name},#{age})
    </insert>
    
    <update id="update" parameterType="student">
        update t_student set name=#{name},age=#{age} where id=#{id}
    </update>
    
    <delete id="delete" parameterType="Integer">
        delete from t_student where id=#{id}
    </delete>
    
    <select id="findById" parameterType="Integer" resultType="student">
        select * from t_student where id=#{id}
    </select>
    
    <select id="findAll"  resultMap="studentResult">
        select * from t_student 
    </select>

</mapper> 

package com.mybatis.model;

public class Student {

    private Integer id;
    private String name;
    private Integer age;
    
    
    
    public Student() {
        super();
        // TODO Auto-generated constructor stub
    }
    
    
    
    public Student(String name, Integer age) {
        super();
        this.name = name;
        this.age = age;
    }



    public Student(int id, String name, int age) {
        super();
        this.id = id;
        this.name = name;
        this.age = age;
    }



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



    /* (non-Javadoc)
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return super.toString();
    }
    
    
}

package com.mybatis.testjdbc01;

import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;

import com.mybatis.mapper.StudentMapper;
import com.mybatis.model.Student;
import com.mybatsi.util.SessionFactoryUtil;

public class TestJdbcMybatis01 {
    
    private static Logger logger = Logger.getLogger(TestJdbcMybatis01.class);

    public static void main(String[] args) {
        SqlSession sqlSession = SessionFactoryUtil.openSession();
        StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class);
        Student student=new Student("lis",11);
        int result=studentMapper.add(student);
        sqlSession.commit();
        if(result>0){
            System.out.println("添加成功！");
            logger.info("添加成功");
        }
    }
}

package com.mybatis.testjdbc01;

import static org.junit.Assert.fail;

import java.util.List;

import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.mybatis.mapper.StudentMapper;
import com.mybatis.model.Student;
import com.mybatsi.util.SessionFactoryUtil;

public class TestJdbcMybatis02 {
    
    private static Logger logger = Logger.getLogger(TestJdbcMybatis01.class);
    private SqlSession sqlSession = null;
    private StudentMapper studentMapper = null;
    
    /**
     * 测试方法调用前执行
     * @throws Exception
     */
    @Before
    public void setUp() throws Exception {
        sqlSession = SessionFactoryUtil.openSession();
        studentMapper = sqlSession.getMapper(StudentMapper.class);
    }

    /**
     * 测试方法后调用
     * @throws Exception
     */
    @After
    public void tearDown() throws Exception {
        sqlSession.close();
    }

    /**
     * 测试方法 
     */
    @Test
    public void test() {
        logger.info("添加学生");
        Student student=new Student("wang5",12);
        int result=studentMapper.add(student);
        sqlSession.commit();
    }
    
    @Test
    public void testUpdate()
    {
        logger.info("修改学生");
        Student student=new Student(4,"wang2",13);
        studentMapper.update(student);
        sqlSession.commit();
    }
    
    @Test
    public void testDelete(){
        logger.info("删除学生");
        studentMapper.delete(8);
        sqlSession.commit();
    }
    
    @Test
    public void testFindById(){
        logger.info("根据id查找学生");
        Student student = studentMapper.findById(1);
        sqlSession.commit();
    }

    @Test
    public void findAll(){
        logger.info("查找所有学生");
        List<Student> student = studentMapper.findAll();
        for(Student stu : student){
            System.out.println(stu.getName());
        }
        sqlSession.commit();
    }
}

package com.mybatsi.util;

import java.io.InputStream;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class SessionFactoryUtil {

    private static SqlSessionFactory sqlSessionFactory;
    
    public static SqlSessionFactory getSessionFactiory(){
        if(sqlSessionFactory == null){
            InputStream inputStream = null;
            try {
                inputStream = Resources.getResourceAsStream("mybatis-config.xml");
                sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
            } catch (Exception e) {
            e.printStackTrace();
            }
        }
        return sqlSessionFactory;
    }
    
    public static SqlSession openSession(){
        return getSessionFactiory().openSession();
    }
}

log4j.rootLogger=info,appender1,appender2

log4j.appender.appender1=org.apache.log4j.ConsoleAppender 

log4j.appender.appender2=org.apache.log4j.FileAppender 
log4j.appender.appender2.File=D:/logFile.txt
 
log4j.appender.appender1.layout=org.apache.log4j.TTCCLayout
log4j.appender.appender2.layout=org.apache.log4j.TTCCLayout  

<?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>
    <properties resource="jdbc.properties"/>
    <typeAliases>
        <typeAlias alias="student" type="com.mybatis.model.Student"/>
    </typeAliases>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC" />
            <dataSource type="POOLED">
                <property name="driver" value="${jdbc.driverClassName}" />
                <property name="url" value="${jdbc.url}" />
                <property name="username" value="${jdbc.username}" />
                <property name="password" value="${jdbc.password}" />
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="com/mybatis/mapper/StudentMapper.xml" />
        <!-- <mapper class="com.mybatis.mapper.StudentMapper"/> -->
    </mappers>
</configuration>