先对pom.xml文件导入所需要的依赖包
这是整个pom文件的内容
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.javacto</groupId>
<artifactId>sping_mybatis02</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!-- mybatis包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
<!-- mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
<!-- spring-context包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.13</version>
</dependency>
<!-- spring-tx包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.3.13</version>
</dependency>
<!-- spring-jdbc包-->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.13</version>
</dependency>
<!-- spring-mybatis包-->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.6</version>
</dependency>
<!-- 阿里连接池druid包-->
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.8</version>
</dependency>
<!-- 测试junit包-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
<!-- spring-test包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.3.13</version>
</dependency>
</dependencies>
</project>
该spring与mybatis整合所有所需的jar包有以下配套内容
<dependencies>
<!-- mybatis包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
<!-- mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
<!-- spring-context包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.3.13</version>
</dependency>
<!-- spring-tx包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.3.13</version>
</dependency>
<!-- spring-jdbc包-->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.13</version>
</dependency>
<!-- spring-mybatis包-->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.6</version>
</dependency>
<!-- 阿里连接池druid包-->
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.8</version>
</dependency>
<!-- 测试junit包-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
<!-- spring-test包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.3.13</version>
</dependency>
</dependencies>
对项目进行创建包以及类
1:配置文件(resources目录下的配置文件)
(1):SqlMapConfig.xml
<?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>
</configuration>
(2):db.properties
jdbc.driverClassName=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql:///mybatis?characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456
(3):applicationContext.xml
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 扫描包-->
<context:component-scan base-package="com.javacto"></context:component-scan>
<!-- 读取配置文件-->
<!-- <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>-->
<context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
<!-- 调用阿里创建druid-->
<!-- <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">-->
<!-- <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">-->
<!-- <property name="driverClassName" value="${jdbc.driverClassName}"></property>-->
<!-- <property name="url" value="${jdbc.url}"></property>-->
<!-- <property name="username" value="${jdbc.username}"></property>-->
<!-- <property name="password" value="${jdbc.password}"></property>-->
<!-- </bean>-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- spring创建SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 引入数据源-->
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:SqlMapConfig.xml"></property>
<property name="mapperLocations" value="classpath*:mapper/StudentDao.xml"></property>
</bean>
<!-- 该对象可以自动扫描持久层接口,并为接口创建代理对象 -->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.javacto.dao"></property>
</bean>
</beans>
(4):mapper包下的StudnetDao.xml
StudentDao.xml
<?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.javacto.dao.StudentDao">
<select id="findAll" resultType="com.javacto.pojo.Student">
select * from student
</select>
</mapper>
2:java包下目录
(1):pojo包(Student.java)
package com.javacto.pojo;
public class Student {
private int sid;
private String name;
private int age;
private String sex;
private int classId;
public Student() {
}
public Student(String name, int age, String sex, int classId) {
this.name = name;
this.age = age;
this.sex = sex;
this.classId = classId;
}
public Student(int sid, String name, int age, String sex, int classId) {
this.sid = sid;
this.name = name;
this.age = age;
this.sex = sex;
this.classId = classId;
}
public int getSid() {
return sid;
}
public void setSid(int sid) {
this.sid = sid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public int getClassId() {
return classId;
}
public void setClassId(int classId) {
this.classId = classId;
}
@Override
public String toString() {
return "Student{" +
"sid=" + sid +
", name='" + name + '\'' +
", age=" + age +
", sex='" + sex + '\'' +
", classId=" + classId +
'}';
}
}
(2):dao包(StudentDao.java)
package com.javacto.dao;
import com.javacto.pojo.Student;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
public interface StudentDao {
// 查询所有信息
// @Select("select * from student")
List<Student> findAll();
}
(3):service包(StudentService.java)
package com.javacto.service;
import com.javacto.dao.StudentDao;
import com.javacto.pojo.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class StudentService {
@Autowired
private StudentDao studentDao;
public List<Student> findAll(){
return studentDao.findAll();
}
}
3:test包下目录
(1):test包(StudentServiceTest)
package com.java.test;
import com.javacto.pojo.Student;
import com.javacto.service.StudentService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.List;
告知创建spring容器时读取哪个配置类或配置文件
//@RunWith(SpringJUnit4ClassRunner.class)
配置类写法:@ContextConfiguration(classes=配置类.class)
JUnit使用Spring方式运行代码,即自动创建spring容器。
//@ContextConfiguration(locations = "classpath:applicationContext.xml")
@RunWith(SpringJUnit4ClassRunner.class)
//@ContextConfiguration(classes = com.javacto.dao.StudentDao.class)
@ContextConfiguration(locations = "classpath:applicationContext.xml")
public class StudentServiceTest {
@Autowired
private StudentService studentService;
@Test
public void findAll(){
List<Student> all = studentService.findAll();
all.forEach(System.out::println);
}
}