Spring系列教程七： Spring 整合mybatis的四種方式
1、使用採用數據映射器（MapperFactoryBean）的方式註解實現整合mybatis
不用寫mybatis映射文件，採用註解方式提供相應的sql語句和輸入參數，項目目錄以下java
第一步、導入jar包
<build>
<resources>
<!-- mapper.xml文件在java目錄下 -->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
</build>
<dependencies>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.6</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<scope>compile</scope>
</dependency>
</dependencies>
第二步、建立學生實體類
package com.cc.entity;
public class Student {
private int id;
private String stuno;
private String name;
private String classid;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getStuno() {
return stuno;
}
public void setStuno(String stuno) {
this.stuno = stuno;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getClassid() {
return classid;
}
public void setClassid(String classid) {
this.classid = classid;
}
@Override
public String toString() {
return "Student{" +
"id=" + id +
", stuno='" + stuno + '\'' +
", name='" + name + '\'' +
", classid='" + classid + '\'' +
'}';
}
}
第三步、建立Mapper接口，在接口中用註解的方式實現sql語句
package com.cc.dao;
import com.cc.entity.Student;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import java.util.List;
public interface StudentMapper {
@Select("select * from student where id=#{id}")
Student findById(@Param("id") int id);
@Select("select * from student")
List<Student> selectAll();
}
那麼還有一個問題，我想在註解中實現動態查詢那怎麼辦？？？案例以下mysql
@Mapper
public interface DemandCommentMapper extends BaseMapper<DemandComment>{
@Select("SELECT "
+ "a.id as 'id',a.create_date as 'createDate',a.content as 'content',"
+ "a.parent_id as 'parentId',a.first_comment_id as 'firstCommentId',"
+ "b.id as 'fromUser.id',b.realname as 'fromUser.realname',b.avatar as 'fromUser.avatar',"
+ "c.id as 'toUser.id',c.realname as 'toUser.realname',c.avatar as 'toUser.avatar' "
+ "FROM t_demand_comment a "
+ "LEFT JOIN t_user b ON b.id = a.from_uid "
+ "LEFT JOIN t_user c ON c.id = a.to_uid "
+ "WHERE a.demand_id = #{demandId} "
+ "ORDER BY a.create_date ASC"
+ "LIMIT #{startNo},#{pageSize}")
public List<DemandComment> listDemandComment(@Param("demandId") Long demandId,
@Param("startNo") Integer pageNo,
@Param("pageSize") Integer pageSize);
這樣整個語句是寫死的，若是我想根據pageNo與pageSize是否爲空來判斷是否須要分頁，該怎麼作呢?若是使用xml來配置的話能夠用spring
<when test='startNo!=null and pageSize != null '>
LIMIT #{startNo},#{pageSize}
</when>
若是是用@Select 這種該如何作呢？方法：用script標籤包圍，而後像xml語法同樣書寫sql
@Mapper
public interface DemandCommentMapper extends BaseMapper<DemandComment>{
@Select("<script>"
+ "SELECT "
+ "a.id as 'id',a.create_date as 'createDate',a.content as 'content',"
+ "a.parent_id as 'parentId',a.first_comment_id as 'firstCommentId',"
+ "b.id as 'fromUser.id',b.realname as 'fromUser.realname',b.avatar as 'fromUser.avatar',"
+ "c.id as 'toUser.id',c.realname as 'toUser.realname',c.avatar as 'toUser.avatar' "
+ "FROM t_demand_comment a "
+ "LEFT JOIN t_user b ON b.id = a.from_uid "
+ "LEFT JOIN t_user c ON c.id = a.to_uid "
+ "WHERE a.demand_id = #{demandId} "
+ "ORDER BY a.create_date ASC "
+ "<if test='startNo!=null and pageSize != null '>"
+ "LIMIT #{startNo},#{pageSize}"
+ "</if>"
+ "</script>")
public List<DemandComment> listDemandComment(@Param("demandId") Long demandId,
@Param("startNo") Integer pageNo,
@Param("pageSize") Integer pageSize);
項目實例數據庫
@Select("<script>"
+"select * from mi_taobao where 1=1"
+"<if test='status != null'>"
+"and status = #{status}"
+"</if>"
+"</script>")
public List<Taobao> getTaobao(@Param("status") Integer status);
在這裏還碰到一個問題就是報錯：Caused by: org.apache.ibatis.reflection.ReflectionException: There is no getter for property named 'status' in 'class java.lang.Interger'apache
出現緣由：這裏出現的問題是在DAO方法中定義的參數 與 實體中定義的屬性不一致 致使的。session
解決方案：dao層加@Param("userId")註解便可（實例中就是加上@Param("status")）mybatis
public List<DictItem> selectKeyByUserId(@Param("userId") long userId);app
第四步、在service層實現接口類
package com.cc.service;
import com.cc.entity.Student;
import java.util.List;
public interface StudentService {
Student findById(int id);
List<Student> selectAll();
}
package com.cc.service;
import com.cc.dao.StudentMapper;
import com.cc.entity.Student;
import java.util.List;
public class StudentServiceImpl implements StudentService {
private StudentMapper studentMapper;
public void setStudentMapper(StudentMapper studentMapper) {
this.studentMapper = studentMapper;
}
@Override
public Student findById(int id) {
return (Student) studentMapper.findById(id);
}
@Override
public List<Student> selectAll() {
return studentMapper.selectAll();
}
}
第五步、配置ApplicationContext.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
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">
<!--代表引用的數據庫配置文件db.properties-->
<context:property-placeholder location="classpath:db.properties"/>
<!--配置數據庫-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--配置sqlSessionFactoryBean對象，mybatis主要靠的sqlSessionFactoryBean對象
，裏面配置兩個參數，一個是dataSource,一個是mybatis核心配置文件-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--mybatis核心配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>
<!--配置Mapper-->
<bean id="StudentMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<!--主要靠的是那個Mapper具體來實現的-->
<property name="mapperInterface" value="com.cc.dao.StudentMapper"></property>
<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
</bean>
<!--配置StudentService-->
<bean id="studentService" class="com.cc.service.StudentServiceImpl">
<property name="studentMapper" ref="StudentMapper"></property>
</bean>
</beans>
第六步、配置db.properties文件
#mysql jdbc fresh jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/fresh?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=root
第七步、測試類
import com.cc.entity.Student;
import com.cc.service.StudentService;
import com.cc.service.StudentServiceImpl;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.util.List;
public class Testdemo1 {
@Test
public void test(){
ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
StudentService studentService =ac.getBean("studentService", StudentServiceImpl.class);
Student student=studentService.findById(5);
System.out.println(student);
List<Student> studentList=studentService.selectAll();
for (Student stu: studentList) {
System.out.println(stu);
}
}
}
2、採用抽象類org.mybatis.spring.support.SqlSessionDaoSupport提供SqlSession
目錄結構以下ide
第一步、導入jar包
<build>
<resources>
<!-- mapper.xml文件在java目錄下 -->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
</build>
<dependencies>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.6</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>Spring</groupId>
<artifactId>Spring_mybatis_01</artifactId>
<version>1.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
</dependencies>
第二步、建立實體類
package cc.entity;
public class Student {
private int id;
private String stuno;
private String name;
private String classid;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getStuno() {
return stuno;
}
public void setStuno(String stuno) {
this.stuno = stuno;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getClassid() {
return classid;
}
public void setClassid(String classid) {
this.classid = classid;
}
@Override
public String toString() {
return "Student{" +
"id=" + id +
", stuno='" + stuno + '\'' +
", name='" + name + '\'' +
", classid='" + classid + '\'' +
'}';
}
}
第三步、建立StudentDao接口，已經其實現類
package cc.dao;
import com.cc.entity.Student;
public interface StudentDao {
Student findById(int id);
}
package cc.dao;
import com.cc.dao.StudentDao;
import com.cc.entity.Student;
import org.mybatis.spring.support.SqlSessionDaoSupport;
public class StudentImpl extends SqlSessionDaoSupport implements StudentDao {
@Override
public Student findById(int id) {
return (Student) getSqlSession().selectOne("com.cc.dao.StudentMapper.findById",id);
}
}
第四步、建立映射器接口，已經其mapper配置文件
package cc.dao;
import com.cc.entity.Student;
public interface StudentMapper {
Student findById(int id);
}
<?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.cc.dao.StudentMapper">
<select id="findById" resultType="Student" parameterType="int">
SELECT * from student where id = #{id}
</select>
</mapper>
第五步、實現ApplicationContext配置文件和mybatis核心配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
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">
<!--代表引用的數據庫配置文件db.properties-->
<context:property-placeholder location="classpath:db.properties"/>
<!--配置數據庫-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--配置sqlSessionFactoryBean對象-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--mybatis核心配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>
<bean id="studentDao" class="cc.dao.StudentImpl">
<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
</bean>
</beans>
<?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> <typeAliases> <package name="com.cc.entity"/> </typeAliases> <mappers> <mapper resource="com\cc\mapper\StudentMapper.xml"></mapper> </mappers> </configuration>
第六步、配置數據文件
#mysql jdbc fresh jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/fresh?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=root
第七步、在test文件用junit4實現單元測試
import cc.dao.StudentImpl;
import com.cc.entity.Student;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
@org.junit.Test
public void test(){
ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
StudentImpl stu=ac.getBean("studentDao", StudentImpl.class);
Student student=stu.findById(6);
System.out.println(student);
}
}
3、採用接口org.apache.ibatis.session.SqlSession的實現類org.mybatis.spring.SqlSessionTemplate
這種平時都用的不多，因此這裏我就不寫了
4、採用掃描接口的方式實現Spring整合mybatis(最經常使用)
第一步、導入依賴配置
<build>
<resources>
<!-- mapper.xml文件在java目錄下 -->
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
</resource>
</resources>
</build>
<dependencies>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.9</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.6</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j</artifactId>
<version>2.6.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>Spring</groupId>
<artifactId>Spring_mybatis_01</artifactId>
<version>1.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.12</version>
</dependency>
</dependencies>
第二步、編寫實體類
package cc.entity;
public class Student {
private int id;
private String stuno;
private String name;
private String classid;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getStuno() {
return stuno;
}
public void setStuno(String stuno) {
this.stuno = stuno;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getClassid() {
return classid;
}
public void setClassid(String classid) {
this.classid = classid;
}
@Override
public String toString() {
return "Student{" +
"id=" + id +
", stuno='" + stuno + '\'' +
", name='" + name + '\'' +
", classid='" + classid + '\'' +
'}';
}
}
第三步、配置StudentMapper接口
package cc.dao;
import com.cc.entity.Student;
public interface StudentMapper {
Student findById(int id);
}
第四步、配置mybatis映射文件和核心配置文件
<?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="cc.dao.StudentMapper">
<select id="findById" resultType="Student" parameterType="int">
SELECT * from student where id = #{id}
</select>
</mapper>
<?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> <settings> <setting name="logImpl" value="LOG4J"/> </settings> <typeAliases> <package name="com.cc.entity"/> </typeAliases> <mappers> <mapper resource="com\cc\mapper\StudentMapper.xml"></mapper> </mappers> </configuration>
第五步、配置數據庫文件
#mysql jdbc fresh jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/fresh?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=root
第六步、配置ApplicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
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">
<context:component-scan base-package="cc"></context:component-scan>
<!--代表引用的數據庫配置文件db.properties-->
<context:property-placeholder location="classpath:db.properties"/>
<!--配置數據庫-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<!--配置sqlSessionFactoryBean對象-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="mapperLocations" value="cc/mapper/*.xml"></property>
<!--mybatis核心配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>
<!--配置接口掃描-->
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cc.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!--配置事務-->
</beans>
第七步、編寫測試類
import cc.service.StudentService;
import com.cc.entity.Student;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Testone {
@Test
public void test(){
ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
StudentService studentService = (StudentService) ac.getBean("studentService");
Student student=studentService.findById(4);
System.out.println(student);
}
}
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