1.2.2建立MySql数据库
在C:\Program Files\MySQL\MySQL Server 5.7\bin下面:
首先连接MySQL: mysql -u root -p
/* 建立数据库 */
CREATE DATABASE STUDENT_MANAGER;
USE STUDENT_MANAGER; /***** 建立student表 *****/
CREATE TABLE STUDENT_TBL
(
STUDENT_ID VARCHAR() PRIMARY KEY,
STUDENT_NAME VARCHAR() NOT NULL,
STUDENT_SEX VARCHAR(),
STUDENT_BIRTHDAY DATE,
CLASS_ID VARCHAR()
); /*插入学生数据*/
INSERT INTO STUDENT_TBL (STUDENT_ID,
STUDENT_NAME,
STUDENT_SEX,
STUDENT_BIRTHDAY,
CLASS_ID)
VALUES (,
'某某某',
'女',
'1980-08-01', )
创建连接MySql使用的配置文件mysql.properties。
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/student_manager?user=root&password=limingnihao&useUnicode=true&characterEncoding=UTF-8
1.2.3搭建MyBatis环境
1.2.3.1创建实体类: StudentEntity
package com.deppon.test04.entity;import java.io.Serializable;
import java.util.Date;public class StudentEntity implements Serializable { private static final long serialVersionUID = 3096154202413606831L;
private Date studentBirthday;
private String studentID;
private String studentName;
private String studentSex; public Date getStudentBirthday() {
return studentBirthday;
} public String getStudentID() {
return studentID;
} public String getStudentName() {
return studentName;
} public String getStudentSex() {
return studentSex;
} public void setStudentBirthday(Date studentBirthday) {
this.studentBirthday = studentBirthday;
} public void setStudentID(String studentID) {
this.studentID = studentID;
} public void setStudentName(String studentName) {
this.studentName = studentName;
} public void setStudentSex(String studentSex) {
this.studentSex = studentSex;
}
}
1.2.3.2创建数据访问接口
Student类对应的dao接口:StudentMapper。
public interface StudentMapper { public StudentEntity getStudent(String studentID); public StudentEntity getStudentAndClass(String studentID); public List<StudentEntity> getStudentAll(); public void insertStudent(StudentEntity entity); public void deleteStudent(StudentEntity entity); public void updateStudent(StudentEntity entity);
}
1.2.3.3创建SQL映射语句文件
Student类的sql语句文件StudentMapper.xml
resultMap标签:表字段与属性的映射。
Select标签:查询sql。
<?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.deppon.test04.dao.StudentMapper"> <resultMap type="StudentEntity" id="studentResultMap">
<id property="studentID" column="STUDENT_ID"/>
<result property="studentName" column="STUDENT_NAME"/>
<result property="studentSex" column="STUDENT_SEX"/>
<result property="studentBirthday" column="STUDENT_BIRTHDAY"/>
</resultMap> <!-- 查询学生,根据id -->
<select id="getStudent" parameterType="String" resultType="com.deppon.test04.entity.StudentEntity" resultMap="studentResultMap">
<![CDATA[
SELECT * from STUDENT_TBL ST
WHERE ST.STUDENT_ID = #{studentID}
]]>
</select> <!-- 查询学生列表 -->
<select id="getStudentAll" resultType="com.deppon.test04.entity.StudentEntity" resultMap="studentResultMap">
<![CDATA[
SELECT * from STUDENT_TBL
]]>
</select> </mapper>
1.2.3.4创建MyBatis的mapper配置文件
在src/main/resource中创建MyBatis配置文件:mybatis-config.xml。
typeAliases标签:给类起一个别名。com.manager.data.model.StudentEntity类,可以使用StudentEntity代替。
Mappers标签:加载MyBatis中实体类的SQL映射语句文件。
<?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>
<!-- 全局别名设置,在映射文件中只需写别名,而不必写出整个类路径 -->
<typeAliases>
<typeAlias type="com.deppon.test04.entity.StudentEntity" alias="StudentEntity"/>
</typeAliases> <mappers>
<mapper resource="src/main/resources/StudentMapper.xml" />
</mappers> </configuration>
1.2.3.5修改Spring 的配置文件
主要是添加SqlSession的制作工厂类的bean:SqlSessionFactoryBean,(在mybatis.spring包中)。需要指定配置文件位置和dataSource。
和数据访问接口对应的实现bean。通过MapperFactoryBean创建出来。需要执行接口类全称和SqlSession工厂bean的引用