MyBatis与Spring集成

导入pom依赖

<?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>org.example</groupId><artifactId>Spring</artifactId><version>1.0-SNAPSHOT</version><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><maven.compiler.plugin.version>3.7.0</maven.compiler.plugin.version><!--添加jar包依赖--><!--1.spring 5.0.2.RELEASE相关--><spring.version>5.0.2.RELEASE</spring.version><!--2.mybatis相关--><mybatis.version>3.4.5</mybatis.version><!--mysql--><mysql.version>5.1.44</mysql.version><!--pagehelper分页jar依赖--><pagehelper.version>5.1.2</pagehelper.version><!--mybatis与spring集成jar依赖--><mybatis.spring.version>1.3.1</mybatis.spring.version><!--3.dbcp2连接池相关 druid--><commons.dbcp2.version>2.1.1</commons.dbcp2.version><commons.pool2.version>2.4.3</commons.pool2.version><!--4.log日志相关--><log4j2.version>2.9.1</log4j2.version><!--5.其他--><junit.version>4.12</junit.version><servlet.version>4.0.0</servlet.version><lombok.version>1.18.2</lombok.version></properties><dependencies><!--1.spring相关--><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version></dependency><!--2.mybatis相关--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>${mybatis.version}</version></dependency><!--mysql--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><!--pagehelper分页插件jar包依赖--><dependency><groupId>com.github.pagehelper</groupId><artifactId>pagehelper</artifactId><version>${pagehelper.version}</version></dependency><!--mybatis与spring集成jar包依赖--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>${mybatis.spring.version}</version></dependency><!--3.dbcp2连接池相关--><dependency><groupId>org.apache.commons</groupId><artifactId>commons-dbcp2</artifactId><version>${commons.dbcp2.version}</version></dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId><version>${commons.pool2.version}</version></dependency><!--4.log日志相关依赖--><!--核心log4j2jar包--><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-core</artifactId><version>${log4j2.version}</version></dependency><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-api</artifactId><version>${log4j2.version}</version></dependency><!--web工程需要包含log4j-web，非web工程不需要--><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-web</artifactId><version>${log4j2.version}</version></dependency><!--5.其他--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version>
<!--      <scope>test</scope>--></dependency><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>${servlet.version}</version><scope>provided</scope></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>${lombok.version}</version><scope>provided</scope></dependency></dependencies><build><finalName>Spring</finalName><resources><!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题--><resource><directory>src/main/java</directory><includes><include>**/*.xml</include></includes></resource><!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题--><resource><directory>src/main/resources</directory><includes><include>jdbc.properties</include><include>*.xml</include></includes></resource></resources><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>${maven.compiler.plugin.version}</version><configuration><source>${maven.compiler.source}</source><target>${maven.compiler.target}</target><encoding>${project.build.sourceEncoding}</encoding></configuration></plugin><plugin><groupId>org.mybatis.generator</groupId><artifactId>mybatis-generator-maven-plugin</artifactId><version>1.3.2</version><dependencies><!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency></dependencies><configuration><overwrite>true</overwrite></configuration></plugin><plugin><artifactId>maven-clean-plugin</artifactId><version>3.1.0</version></plugin><!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --><plugin><artifactId>maven-resources-plugin</artifactId><version>3.0.2</version></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>3.8.0</version></plugin><plugin><artifactId>maven-surefire-plugin</artifactId><version>2.22.1</version></plugin><plugin><artifactId>maven-war-plugin</artifactId><version>3.2.2</version></plugin><plugin><artifactId>maven-install-plugin</artifactId><version>2.5.2</version></plugin><plugin><artifactId>maven-deploy-plugin</artifactId><version>2.8.2</version></plugin></plugins></build>
</project>

导入generatorConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" >
<generatorConfiguration><!-- 引入配置文件 --><properties resource="jdbc.properties"/><!--指定数据库jdbc驱动jar包的位置--><classPathEntry location="D:\\temp2\\mvn_repository\\mysql\\mysql-connector-java\\5.1.44"/><!-- 一个数据库一个context --><context id="infoGuardian"><!-- 注释 --><commentGenerator><property name="suppressAllComments" value="true"/><!-- 是否取消注释 --><property name="suppressDate" value="true"/> <!-- 是否生成注释代时间戳 --></commentGenerator><!-- jdbc连接 --><jdbcConnection driverClass="${jdbc.driver}"connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/><!-- 类型转换 --><javaTypeResolver><!-- 是否使用bigDecimal， false可自动转化以下类型（Long, Integer, Short, etc.） --><property name="forceBigDecimals" value="false"/></javaTypeResolver><!-- 01 指定javaBean生成的位置 --><!-- targetPackage：指定生成的model生成所在的包名 --><!-- targetProject：指定在该项目下所在的路径  --><javaModelGenerator targetPackage="com.xiaoxu.model"targetProject="src/main/java"><!-- 是否允许子包，即targetPackage.schemaName.tableName --><property name="enableSubPackages" value="false"/><!-- 是否对model添加构造函数 --><property name="constructorBased" value="true"/><!-- 是否针对string类型的字段在set的时候进行trim调用 --><property name="trimStrings" value="false"/><!-- 建立的Model对象是否 不可改变  即生成的Model对象不会有 setter方法，只有构造方法 --><property name="immutable" value="false"/></javaModelGenerator><!-- 02 指定sql映射文件生成的位置 --><sqlMapGenerator targetPackage="com.xiaoxu.mapper"targetProject="src/main/java"><!-- 是否允许子包，即targetPackage.schemaName.tableName --><property name="enableSubPackages" value="false"/></sqlMapGenerator><!-- 03 生成XxxMapper接口 --><!-- type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 --><!-- type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 --><!-- type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 --><javaClientGenerator targetPackage="com.xiaoxu.mapper"targetProject="src/main/java" type="XMLMAPPER"><!-- 是否在当前路径下新加一层schema,false路径com.oop.eksp.user.model， true:com.oop.eksp.user.model.[schemaName] --><property name="enableSubPackages" value="false"/></javaClientGenerator><!-- 配置表信息 --><!-- schema即为数据库名 --><!-- tableName为对应的数据库表 --><!-- domainObjectName是要生成的实体类 --><!-- enable*ByExample是否生成 example类 --><!--<table schema="" tableName="t_book" domainObjectName="Book"--><!--enableCountByExample="false" enableDeleteByExample="false"--><!--enableSelectByExample="false" enableUpdateByExample="false">--><!--&lt;!&ndash; 忽略列，不生成bean 字段 &ndash;&gt;--><!--&lt;!&ndash; <ignoreColumn column="FRED" /> &ndash;&gt;--><!--&lt;!&ndash; 指定列的java数据类型 &ndash;&gt;--><!--&lt;!&ndash; <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> &ndash;&gt;--><!--</table>--><table schema="" tableName="t_mvc_Book" domainObjectName="Book"enableCountByExample="false" enableDeleteByExample="false"enableSelectByExample="false" enableUpdateByExample="false"><!-- 忽略列，不生成bean 字段 --><!-- <ignoreColumn column="FRED" /> --><!-- 指定列的java数据类型 --><!-- <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> --></table></context>
</generatorConfiguration>

导入spring-context.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"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"><!--    spring框架与mybatis整合的配置文件加载到spring的上下文中--><import resource="classpath:spring-mybatis.xml"></import>
</beans>

导入spring-mybatis.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" xmlns:tx="http://www.springframework.org/schema/tx"xmlns:aop="http://www.springframework.org/schema/aop"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 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"><!--1. 注解式开发 --><!-- 注解驱动 --><context:annotation-config/><!-- 用注解方式注入bean，并指定查找范围：com.xiaoxu及子子孙孙包--><context:component-scan base-package="com.xiaoxu"/><context:property-placeholder location="classpath:jdbc.properties"/><bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"destroy-method="close"><property name="driverClassName" value="${jdbc.driver}"/><property name="url" value="${jdbc.url}"/><property name="username" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/><!--初始连接数--><property name="initialSize" value="10"/><!--最大活动连接数--><property name="maxTotal" value="100"/><!--最大空闲连接数--><property name="maxIdle" value="50"/><!--最小空闲连接数--><property name="minIdle" value="10"/><!--设置为-1时，如果没有可用连接，连接池会一直无限期等待，直到获取到连接为止。--><!--如果设置为N（毫秒），则连接池会等待N毫秒，等待不到，则抛出异常--><property name="maxWaitMillis" value="-1"/></bean><!--4. spring和MyBatis整合 --><!--1) 创建sqlSessionFactory--><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 指定数据源 --><property name="dataSource" ref="dataSource"/><!-- 自动扫描XxxMapping.xml文件，**任意路径 --><property name="mapperLocations" value="classpath*:com/xiaoxu/**/mapper/*.xml"/><!-- 指定别名 --><property name="typeAliasesPackage" value="com/xiaoxu/**/model"/><!--配置pagehelper插件--><property name="plugins"><array><bean class="com.github.pagehelper.PageInterceptor"><property name="properties"><value>helperDialect=mysql</value></property></bean></array></property></bean><!--2) 自动扫描com/xiaoxu/**/mapper下的所有XxxMapper接口(其实就是DAO接口)，并实现这些接口，--><!--   即可直接在程序中使用dao接口，不用再获取sqlsession对象--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!--basePackage 属性是映射器接口文件的包路径。--><!--你可以使用分号或逗号 作为分隔符设置多于一个的包路径--><property name="basePackage" value="com/xiaoxu/**/mapper"/><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/></bean><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean><tx:annotation-driven transaction-manager="transactionManager" /><aop:aspectj-autoproxy/>
</beans>

自动生成mapper文件

编写接口类：BookBiz

package com.xiaoxu.biz;import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;import java.util.List;/*** @author小徐* @site www.veryedu.cn* @company xu集团* @create 2023-08-25 15:17*/
public interface BookBiz {int deleteByPrimaryKey(Integer bid);int insert(Book record);int insertSelective(Book record);Book selectByPrimaryKey(Integer bid);int updateByPrimaryKeySelective(Book record);int updateByPrimaryKey(Book record);List<Book> listPage(Book book, PageBean pageBean);
}

编写接口实现类：

package com.xiaoxu.impl;import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.biz.BookBiz;
import com.xiaoxu.mapper.BookMapper;
import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.util.List;/*** @author小徐* @site www.veryedu.cn* @company xu集团* @create 2023-08-25 15:19*/@Service
public class BookBizimpl implements BookBiz {//相当于set,get方法@Autowiredprivate BookMapper bookMapper;@Overridepublic int deleteByPrimaryKey(Integer bid) {return bookMapper.deleteByPrimaryKey(bid);}@Overridepublic int insert(Book record) {return bookMapper.insert(record);}@Overridepublic int insertSelective(Book record) {return bookMapper.insertSelective(record);}@Overridepublic Book selectByPrimaryKey(Integer bid) {return bookMapper.selectByPrimaryKey(bid);}@Overridepublic int updateByPrimaryKeySelective(Book record) {return bookMapper.updateByPrimaryKeySelective(record);}@Overridepublic int updateByPrimaryKey(Book record) {return bookMapper.updateByPrimaryKey(record);}@Overridepublic List<Book> listPage(Book book, PageBean pageBean) {
//        if (pageBean !=null && pageBean.isPagination())
//            PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
//        List<Book> list = bookMapper.listPage(book);
//        if (pageBean !=null && pageBean.isPagination()){
//            PageInfo<Book> info = new PageInfo<>(list);
//            pageBean.setTotal((int)info.getTotal());
//        }return bookMapper.listPage(book);}}

编写实体类：

package com.xiaoxu.model;import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;//@Data
@AllArgsConstructor
@NoArgsConstructor
public class Book {private Integer bid;private String bname;private Float price;public Book(Integer bid, String bname, Float price) {this.bid = bid;this.bname = bname;this.price = price;}public Book() {super();}public Integer getBid() {return bid;}public void setBid(Integer bid) {this.bid = bid;}public String getBname() {return bname;}public void setBname(String bname) {this.bname = bname;}public Float getPrice() {return price;}public void setPrice(Float price) {this.price = price;}@Overridepublic String toString() {return "Book{" +"bid=" + bid +", bname='" + bname + '\'' +", price=" + price +'}';}
}

编写接口测试类：

package com.xiaoxu.impl;import com.xiaoxu.biz.BookBiz;
import com.xiaoxu.model.Book;
import com.xiaoxu.utlis.PageBean;
import org.junit.After;
import org.junit.Before;
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 static org.junit.Assert.*;/*** @author小徐* @site www.veryedu.cn* @company xu集团* @create 2023-08-25 16:04*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:spring-context.xml"})
public class BookBizimplTest {@Autowiredprivate BookBiz bookBiz;@Beforepublic void setUp() throws Exception {}@Afterpublic void tearDown() throws Exception {}@Testpublic void deleteByPrimaryKey() {System.out.println(this.bookBiz.deleteByPrimaryKey(1));}@Testpublic void insert() {}@Testpublic void insertSelective() {}@Testpublic void selectByPrimaryKey() {System.out.println(bookBiz.selectByPrimaryKey(37));}@Testpublic void updateByPrimaryKeySelective() {}@Testpublic void updateByPrimaryKey() {}@Testpublic void listPage() {Book book = new Book();PageBean pageBean = new PageBean();pageBean.setPage(2);pageBean.setRows(20);book.setBname("圣墟");this.bookBiz.listPage(book,pageBean).forEach(System.out::println);}
}

测试结果：

aop整合PageHelper分页插件

编写分页查询

<select id="listPage" resultType="com.xiaoxu.model.Book" parameterType="com.xiaoxu.model.Book" >select<include refid="Base_Column_List" />from t_mvc_book<where><if test="bname != null">and bname like concat('%',#{bname},'%')</if></where></select>

编写pagebean

package com.xiaoxu.utlis;import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import java.util.Map;public class PageBean implements Serializable {private static final long serialVersionUID = 2422581023658455731L;//页码private int page=1;//每页显示记录数private int rows=10;//总记录数private int total=0;//是否分页private boolean isPagination=true;//上一次的请求路径private String url;//获取所有的请求参数private Map<String,String[]> map;public PageBean() {super();}//设置请求参数public void setRequest(HttpServletRequest req) {String page=req.getParameter("page");String rows=req.getParameter("rows");String pagination=req.getParameter("pagination");this.setPage(page);this.setRows(rows);this.setPagination(pagination);this.url=req.getContextPath()+req.getServletPath();this.map=req.getParameterMap();}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public Map<String, String[]> getMap() {return map;}public void setMap(Map<String, String[]> map) {this.map = map;}public int getPage() {return page;}public void setPage(int page) {this.page = page;}public void setPage(String page) {if(null!=page&&!"".equals(page.trim()))this.page = Integer.parseInt(page);}public int getRows() {return rows;}public void setRows(int rows) {this.rows = rows;}public void setRows(String rows) {if(null!=rows&&!"".equals(rows.trim()))this.rows = Integer.parseInt(rows);}public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public void setTotal(String total) {this.total = Integer.parseInt(total);}public boolean isPagination() {return isPagination;}public void setPagination(boolean isPagination) {this.isPagination = isPagination;}public void setPagination(String isPagination) {if(null!=isPagination&&!"".equals(isPagination.trim()))this.isPagination = Boolean.parseBoolean(isPagination);}/*** 获取分页起始标记位置* @return*/public int getStartIndex() {//(当前页码-1)*显示记录数return (this.getPage()-1)*this.rows;}/*** 末页* @return*/public int getMaxPage() {int totalpage=this.total/this.rows;if(this.total%this.rows!=0)totalpage++;return totalpage;}/*** 下一页* @return*/public int getNextPage() {int nextPage=this.page+1;if(this.page>=this.getMaxPage())nextPage=this.getMaxPage();return nextPage;}/*** 上一页* @return*/public int getPreivousPage() {int previousPage=this.page-1;if(previousPage<1)previousPage=1;return previousPage;}@Overridepublic String toString() {return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", isPagination=" + isPagination+ "]";}
}

编写PagerAspect类

package com.xiaoxu.aspect;import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.xiaoxu.utlis.PageBean;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;import java.util.List;/*** @author小徐* @site www.veryedu.cn* @company xu集团* @create 2023-08-25 17:24**          * *..*Service.*Pager(..)*      *:任意返回值类型*      *..:任意包，不限层级*      *service：以serveice结尾的类/接口*      *page：以page结尾的方法*      ..：任意参数*      符合上述条件，即为目标类或者目标方法*/
@Aspect//代表当前类为切面类
@Component//代表当前类交给spring进行管理
public class PagerAspect {@Around("execution(* *..*Service.*Pager(..))")public Object invoke(ProceedingJoinPoint args) throws Throwable {PageBean pageBean = null;Object[] params = args.getArgs();for (Object param : params) {if(param instanceof PageBean){pageBean = (PageBean)param;break;}}if(pageBean != null && pageBean.isPagination())PageHelper.startPage(pageBean.getPage(),pageBean.getRows());Object list = args.proceed(params);if(null != pageBean && pageBean.isPagination()){PageInfo pageInfo = new PageInfo((List) list);pageBean.setTotal(pageInfo.getTotal()+"");}return list;}}