Spring+MyBatis
作者:互联网
1.创建数据库表
#用户基本信息表
create table t_sm(
test_id int primary key auto_increment,
test_name varchar(20),
test_age int,
test_address varchar(20)
);
2.创建项目完善结构
1.导入依赖
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
<!-- spring-jdbc -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
<!-- spring_tx -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.1.5.RELEASE</version>
</dependency>
<!-- MyBatis依赖 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!-- mybatis-spring 整合包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- mysql数据库驱动 -->
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<!--druid 阿里的连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.7</version>
</dependency>
2.根据数据库表创建javabean
package com.wangxing.springmybatis.bean;
public class UserBean {
private Integer testId;
private String testName;
private Integer testAge;
private String testAddress;
public Integer getTestId() {
return testId;
}
public void setTestId(Integer testId) {
this.testId = testId;
}
public String getTestName() {
return testName;
}
public void setTestName(String testName) {
this.testName = testName == null ? null : testName.trim();
}
public Integer getTestAge() {
return testAge;
}
public void setTestAge(Integer testAge) {
this.testAge = testAge;
}
public String getTestAddress() {
return testAddress;
}
public void setTestAddress(String testAddress) {
this.testAddress = testAddress == null ? null : testAddress.trim();
}
}
3.创建数据访问接口
package com.wangxing.springmybatis.mapper;
import com.wangxing.springmybatis.bean.UserBean;
import com.wangxing.springmybatis.bean.UserBeanExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Component;
@Component
public interface UserBeanMapper {
long countByExample(UserBeanExample example);
int deleteByExample(UserBeanExample example);
int deleteByPrimaryKey(Integer testId);
int insert(UserBean record);
int insertSelective(UserBean record);
List<UserBean> selectByExample(UserBeanExample example);
UserBean selectByPrimaryKey(Integer testId);
int updateByExampleSelective(@Param("record") UserBean record, @Param("example") UserBeanExample example);
int updateByExample(@Param("record") UserBean record, @Param("example") UserBeanExample example);
int updateByPrimaryKeySelective(UserBean record);
int updateByPrimaryKey(UserBean record);
}
4.在resources创建mapper文件夹统一保存所有映射文件
5.在src/main/resources创建数据库链接字符串的资源文件【xxxxx.properties】
mydata.properties
mydriver = com.mysql.jdbc.Driver
myurl = jdbc:mysql://127.0.0.1:3306/test
myusername = root
mypassword = 123456
6.在src/main/resources配置MyBatis核心配置文件【mybatis-config.xml】中的内容融入Spring配置文件[applicationContext.xml]中
<?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">
<!--配置自动扫描seervice包 -->
<context:component-scan base-package="com.wangxing.springmybatis.service.impl"></context:component-scan>
<context:component-scan base-package="com.wangxing.springmybatis.Controller"></context:component-scan>
<context:component-scan base-package="com.wangxing.springmybatis"></context:component-scan>
<!--配置接在mydata.properties-->
<context:property-placeholder location="mydata.properties"></context:property-placeholder>
<!--配置数据源 -->
<!-- com.alibaba.druid.pool.DruidDataSource-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${mydriver}"></property>
<property name="url" value="${myurl}"></property>
<property name="username" value="${myusername}"></property>
<property name="password" value="${mypassword}"></property>
</bean>
<!--配置SqlSessionFactory -->
<!-- org.mybatis.spring.SqlSessionFactoryBean-->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--注入MyBatis配置文件 -->
<!--<property name="configLocation" value="classpath:"></property>-->
<!--注入sql映射文件路径-->
<property name="mapperLocations" value="classpath:mapper/UserBeanMapper.xml"></property>
</bean>
<!--配置扫描数据库访问接口包,创建数据库访问接口对象 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.wangxing.springmybatis.mapper"></property>
</bean>
</beans>
7.创建业务访问接口及其实现类
package com.wangxing.springmybatis.service;
import com.wangxing.springmybatis.bean.UserBean;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
public interface UserService {
public void insertUser(UserBean userBean);
public void updateUser(UserBean userBean);
public void deleteUser(int userid);
public List<UserBean> selectUserByName(String name);
public List<UserBean> selectUser();
}
package com.wangxing.springmybatis.service.impl;
import com.wangxing.springmybatis.bean.UserBean;
import com.wangxing.springmybatis.bean.UserBeanExample;
import com.wangxing.springmybatis.mapper.UserBeanMapper;
import com.wangxing.springmybatis.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
@Service("userService")
public class UserServiceImpl implements UserService {
@Autowired
private UserBeanMapper userBeanMapper;
@Override
public void insertUser(UserBean userBean) {
userBeanMapper.insert(userBean);
}
@Override
public void updateUser(UserBean userBean) {
userBeanMapper.updateByPrimaryKey(userBean);
}
@Override
public void deleteUser(int userid) {
userBeanMapper.deleteByPrimaryKey(userid);
}
@Override
public List<UserBean> selectUserByName(String name) {
UserBeanExample userBeanExample = new UserBeanExample();
UserBeanExample.Criteria criteria = userBeanExample.createCriteria();
criteria.andTestNameEqualTo(name);
List<UserBean> userList = userBeanMapper.selectByExample(userBeanExample);
return userList;
}
@Override
public List<UserBean> selectUser() {
List<UserBean> userList = userBeanMapper.selectByExample(null);
return userList;
}
}
8.创建业务实类
package com.wangxing.springmybatis.Controller;
import com.wangxing.springmybatis.bean.UserBean;
import com.wangxing.springmybatis.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import java.util.List;
@Component("userController")
public class UserController {
@Autowired
private UserService userService;
public void add(UserBean userBean){
try{
userService.insertUser(userBean);
System.out.println("添加成功");
}catch(Exception e){
System.out.println("添加失败");
e.printStackTrace();
}
}
public void upd(UserBean userBean){
try{
userService.updateUser(userBean);
System.out.println("修改成功");
}catch(Exception e){
System.out.println("修改失败");
e.printStackTrace();
}
}
public void del(int id){
try{
userService.deleteUser(id);
System.out.println("删除成功");
}catch(Exception e){
System.out.println("删除失败");
e.printStackTrace();
}
}
public List<UserBean> selOne(String name){
try{
List<UserBean> userList = userService.selectUserByName(name);
System.out.println("查询成功");
return userList;
}catch(Exception e){
System.out.println("查询失败");
e.printStackTrace();
return null;
}
}
public List<UserBean> sel(){
try{
List<UserBean> userList = userService.selectUser();
System.out.println("查询成功");
return userList;
}catch(Exception e){
System.out.println("查询失败");
e.printStackTrace();
return null;
}
}
}
9.测试代码
package com.wangxing.springmybatis;
import static org.junit.Assert.assertTrue;
import com.wangxing.springmybatis.Controller.UserController;
import com.wangxing.springmybatis.bean.UserBean;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.util.List;
public class AppTest {
@Test
public void ins() {
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
UserController userController = applicationContext.getBean("userController", UserController.class);
UserBean userBean = new UserBean();
userBean.setTestAddress("xian");
userBean.setTestAge(23);
userBean.setTestName("lisi");
userController.add(userBean);
}
@Test
public void upd() {
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
UserController userController = applicationContext.getBean("userController", UserController.class);
UserBean userBean = new UserBean();
userBean.setTestId(1);
userBean.setTestAddress("xian");
userBean.setTestAge(23);
userBean.setTestName("lisi");
userController.upd(userBean);
}
@Test
public void del() {
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
UserController userController = applicationContext.getBean("userController", UserController.class);
userController.del(3);
}
@Test
public void selOne() {
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
UserController userController = applicationContext.getBean("userController", UserController.class);
List<UserBean> list = userController.selOne("lisi");
if(list!=null) {
for (UserBean userBean : list) {
System.out.println(userBean.getTestId() + "\t" + userBean.getTestName() + "\t" + userBean.getTestAge() + "\t" + userBean.getTestAddress());
}
}else {
System.out.println("list为空");
}
}
@Test
public void sel() {
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
UserController userController = applicationContext.getBean("userController", UserController.class);
List<UserBean> list = userController.sel();
if(list!=null) {
for (UserBean userBean : list) {
System.out.println(userBean.getTestId() + "\t" + userBean.getTestName() + "\t" + userBean.getTestAge() + "\t" + userBean.getTestAddress());
}
}else {
System.out.println("list为空");
}
}
}
标签:Spring,void,UserBean,MyBatis,import,userBean,com,public 来源: https://blog.csdn.net/m0_49935332/article/details/115720174