spring与mybatis四种整合方法
一、采用org.mybatis.spring.mapper.MapperScannerConfigurer
整体结构如下图：
1、配置文件
1>applicationContext01.xml
2>jdbc.properties外置文件
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/demo?characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root3>mybatis-config.xml
4>studentMapper.xml
insert intot_app_student(id,name,sex,age) values(#{id},#{name},#{sex},#{age})
select * from t_app_student where id =#{id}
5>pom.xml
4.0.0
hys.web.project
hys_demo_ssm
0.0.1-SNAPSHOT
jar
hys_demo_ssm
http://maven.apache.org
UTF-8
junit
junit
4.10
test
commons-dbcp
commons-dbcp
1.4
mysql
mysql-connector-java
5.0.8
org.mybatis
mybatis
3.4.1
org.mybatis
mybatis-spring
1.3.0
org.springframework
spring-web
4.2.0.RELEASE
org.springframework
spring-orm
4.2.0.RELEASE
org.springframework
spring-expression
4.2.0.RELEASE
建立表：
CREATE TABLE t_app_student
( id VARCHAR(32) NOT NULL PRIMARY KEY,
name VARCHAR(15),
sex VARCHAR(2),
age INT
)2、创建action、service、dao、entity类
1>实体类Student
packagecom.hys.app.student.entity;
public class Student {
private Stringid;
private Stringname;
private Stringsex;
private int age;
publicStudent(){
}
publicStudent(Stringid, Stringname, Stringsex,intage) {
this.id =id;
this.name =name;
this.sex =sex;
this.age =age;
}
public StringgetId() {
returnid;
}
public void setId(String id) {
this.id =id;
}
public StringgetName() {
returnname;
}
public void setName(String name) {
this.name =name;
}
public StringgetSex() {
returnsex;
}
public void setSex(String sex) {
this.sex =sex;
}
public int getAge() {
returnage;
}
public void setAge(intage) {
this.age =age;
}
@Override
public StringtoString() {
return"Student [id=" +id +", name=" +name +", sex=" +sex
+ ", age=" + age + "]";
}
}2>dao接口
packagecom.hys.app.student.dao;
importcom.hys.app.student.entity.Student;
public interface StudentDao {
public void save(Student student);
public Student getStudent(Stringid);
}3>service服务
packagecom.hys.app.student.service;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.stereotype.Service;
importcom.hys.app.student.dao.StudentDao;
importcom.hys.app.student.entity.Student;
@Service
publicclass StudentService {
@Autowired
private StudentDao studentDao;
public void save(Student student) {
studentDao.save(student);
}
public Student getStudent(String id) {
Student student =studentDao.getStudent(id);
return student;
}
}4>action测试类
packagecom.hys.app.student.action;
importorg.junit.Test;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.context.ApplicationContext;
importorg.springframework.context.support.ClassPathXmlApplicationContext;
importorg.springframework.stereotype.Controller;
importcom.hys.app.student.entity.Student;
importcom.hys.app.student.service.StudentService;
@Controller
publicclass StudentAction {
@Autowired
private StudentService studentService;
@Test
public void test1(){
//获取上下文对象
ApplicationContext context =newClassPathXmlApplicationContext("applicationContext01.xml");
StudentAction studentAction =(StudentAction)context.getBean("studentAction");
// Student student = newStudent("002","小明","男",20);
// studentAction.studentService.save(student);
Student std = studentAction.studentService.getStudent("001");
System.out.println(std);
}
}注：重复的文件在下面的例子中不在贴出来，在测试类中注意替换applicationContext01.xml文件名
二、采用数据映射器（MapperFactoryBean）的方式，不用写mybatis映射文件，采用注解方式提供相应的sql语句和输入参数
整体结构如下图：
1、配置文件
applicationContext04.xml
2、创建action、service、dao、entity类
1>dao接口
packagecom.hys.app.student.dao;
importorg.apache.ibatis.annotations.Insert;
importorg.apache.ibatis.annotations.Select;
importcom.hys.app.student.entity.Student;
publicinterface StudentDao {
@Insert(" insert intot_app_student(id,name,sex,age) values(#{id},#{name},#{sex},#{age})")
public void save(Student student);
@Select("select * from t_app_studentwhere id = #{id}")
public Student getStudent(String id);
}2>service服务
packagecom.hys.app.student.service;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.stereotype.Service;
importcom.hys.app.student.dao.StudentDao;
importcom.hys.app.student.entity.Student;
@Service
publicclass StudentService {
@Autowired
private StudentDao studentDao;
public void save(Student student) {
studentDao.save(student);
}
public Student getStudent(String id) {
Student student =studentDao.getStudent(id);
return student;
}
}三、采用抽象类org.mybatis.spring.support.SqlSessionDaoSupport提供SqlSession
整体结构如下图：
1、配置文件
applicationContext03.xml
studentMapper.xml
insert intot_app_student(id,name,sex,age) values(#{id},#{name},#{sex},#{age})
select * from t_app_student where id =#{id}
2、创建action、service、dao、entity类
1>dao接口
packagecom.hys.app.student.dao;
importcom.hys.app.student.entity.Student;
public interface StudentDao {
public void save(Student student);
public StudentgetStudent(Stringid);
}2>dao接口实现类
packagecom.hys.app.student.dao;
importjavax.annotation.Resource;
importorg.mybatis.spring.SqlSessionTemplate;
importorg.mybatis.spring.support.SqlSessionDaoSupport;
importorg.springframework.stereotype.Service;
importcom.hys.app.student.entity.Student;
@Service
publicclass StudentDaoImp extends SqlSessionDaoSupport implements StudentDao{
/**
* 我们发现这个类中没有把SqlSessionTemplate作为一个属性，因为我们继承了SqlSessionDaoSupport
*SqlSessionDaoSupport他会提供sqlsession
*/
@Override
public void save(Student student) {
// TODO Auto-generated method stub
this.getSqlSession().insert("com.hys.app.student.dao.StudentDao.save",student);
}
@Override
public Student getStudent(String id) {
// TODO Auto-generated method stub
returnthis.getSqlSession().selectOne("com.hys.app.student.dao.StudentDao.getStudent",id);
}
/**
* 使用SqlSessionDaoSupport必须注意，此处源码1.1.1中有自动注入，1.2中取消了自动注入，需要手工注入，侵入性强
* 也可在spring-mybatis.xml中如下配置，但是这种有多少个dao就要配置到多少个，多个dao就很麻烦。
*
*
*/
@Resource
public voidsetSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate){
super.setSqlSessionTemplate(sqlSessionTemplate);
}
}3>service服务
packagecom.hys.app.student.service;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.stereotype.Service;
importcom.hys.app.student.dao.StudentDaoImp;
importcom.hys.app.student.entity.Student;
@Service
publicclass StudentService {
@Autowired
private StudentDaoImp studentDaoImp;
public void save(Student student) {
studentDaoImp.save(student);
}
public Student getStudent(String id) {
Student student =studentDaoImp.getStudent(id);
return student;
}
}四、采用接口org.apache.ibatis.session.SqlSession的实现类org.mybatis.spring.SqlSessionTemplate
整体结构如下图：
1、配置文件
applicationContext02.xml
studentMapper.xml
insert intot_app_student(id,name,sex,age) values(#{id},#{name},#{sex},#{age})
select * from t_app_student where id =#{id}
2、创建action、service、dao、entity类
1>dao接口
package com.hys.app.student.dao;
import com.hys.app.student.entity.Student;
public interface StudentDao {
public void save(Student student);
public Student getStudent(Stringid);
}2>service服务
packagecom.hys.app.student.service;
importorg.mybatis.spring.SqlSessionTemplate;
importorg.springframework.beans.factory.annotation.Autowired;
importorg.springframework.stereotype.Service;
importcom.hys.app.student.entity.Student;
@Service
publicclass StudentService {
/**
*sqlSessionTemplate模板提供了sqlsession
*/
@Autowired
private SqlSessionTemplatesqlSessionTemplate;
public void save(Student student) {
sqlSessionTemplate.insert("com.hys.app.student.dao.StudentDao.save",student);
}
public Student getStudent(String id) {
Student student =sqlSessionTemplate.selectOne("com.hys.app.student.dao.StudentDao.getStudent",id);
return student;
}
}