mybatis 框架 的应用之三（操作两张没有关联的表，存在主键和外键关系）

#注意：要配置开启多条语句操作，否则会报错( org.apache.ibatis.exceptions.PersistenceException)
lf-driver=com.mysql.jdbc.Driver
lf-url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&allowMultiQueries=true
lf-user=LF
lf-password=LF

<?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="mybatis/config/db.properties"></properties>
<!-- 配置环境 -->
<environments default="development">
<environment id="development">
<!-- 配置事务管理器的类型 -->
<transactionManager type="JDBC"/>
<!-- 配置数据源相关的属性 -->
<dataSource type="UNPOOLED">
<property name="driver" value="${lf-driver}"/>
<property name="url" value="${lf-url}"/>
<property name="username" value="${lf-user}"/>
<property name="password" value="${lf-password}"/>
</dataSource>
</environment>
</environments>
<!--END 配置环境 -->

<!-- 配置映射路径 -->
<mappers>
<mapper resource="mybatis/config/mapper/StudentMapper.xml"/>
</mappers>
<!-- END 配置映射路径 -->

</configuration>

<?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="cn.zr.mybatismore.entity.StudentMapper">
<!-- 添加数据 -->
<insert id="addData" parameterType="cn.zr.mybatismore.entity.Student">

INSERT INTO STUDENT (NAME,AGE) VALUES (#{name},#{age});

INSERT INTO COURSE (NAME,SCORE) VALUES
<foreach collection="courses" item="val" separator=",">
(#{val.name},#{val.score})
</foreach>

</insert>
</mapper>

package cn.zr.mybatismore.entity;

public class Course {

private String name;
private Integer score;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getScore() {
return score;
}
public void setScore(Integer score) {
this.score = score;
}
public Course() {
}
public Course(String name, Integer score) {
this.name = name;
this.score = score;
}
@Override
public String toString() {
return "Course [name=" + name + ", score=" + score + "]";
}

}

package cn.zr.mybatismore.entity;

import java.util.List;

public class Student {

private String name;
private Integer age;
private List<Course> courses;
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;
}
public List<Course> getCourses() {
return courses;
}
public void setCourses(List<Course> courses) {
this.courses = courses;
}
public Student() {
}
public Student(String name, Integer age, List<Course> courses) {
this.name = name;
this.age = age;
this.courses = courses;
}
@Override
public String toString() {
return "Student [name=" + name + ", age=" + age + ", courses="
+ courses + "]";
}

}

package cn.zr.mybatismore.entity;

public interface StudentMapper {

/**
* 添加数据
* @param student 被添加的对象
* @return 操作数据库的数据量
*/
int addData(Student student);

}

package cn.zr.mybatismore.utils;

import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import java.util.List;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionManager;

import cn.zr.mybatismore.entity.Course;
import cn.zr.mybatismore.entity.Student;
import cn.zr.mybatismore.entity.StudentMapper;

public class TestMore {

public static void main(String[] args) {
TestMore testMore = new TestMore();
testMore.addData();
}

private static SqlSessionManager sessionManager;
private static StudentMapper studentMapper;
static{
String resource = "mybatis/config/mybatis-config.xml";
try {
Reader reader = Resources.getResourceAsReader(resource);
sessionManager = SqlSessionManager.newInstance(reader);
studentMapper = sessionManager.getMapper(StudentMapper.class);
} catch (IOException e) {
e.printStackTrace();
}
}

public void addData(){

Course course1 = new Course("math", 80);
Course course2 = new Course("chinese", 90);
Course course3 = new Course("english", 85);
List<Course> courses =new ArrayList<Course>();
courses.add(course1);
courses.add(course2);
courses.add(course3);
Student student = new Student();
student.setName("ganlu");
student.setAge(23);
student.setCourses(courses);
System.out.println(student);
int count = studentMapper.addData(student);
if (count > 0) {
System.out.println("操作成功"+count+"条数据");
}else {
System.out.println("操作失败");
}
}

}