mybatis与Spring集成(Aop整合PagerAspect插件)

Posted huangting

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了mybatis与Spring集成(Aop整合PagerAspect插件)相关的知识,希望对你有一定的参考价值。

  目的:

  1. Mybatis与spring集成

  2. Aop整合pagehelper插件

  


 

  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/maven-v4_0_0.xsd">
    <parent>
        <artifactId>module</artifactId>
        <groupId>com.huangting</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <packaging>war</packaging>

    <name>ssm</name>
    <artifactId>ssm</artifactId>
    <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>$lombok.version</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
    <build>
        <finalName>ssm</finalName>
        <resources>
            <!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题-->
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
            <!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题-->
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>jdbc.properties</include>
                    <include>*.xml</include>
                </includes>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>$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>
                <groupId>org.mortbay.jetty</groupId>
                <artifactId>maven-jetty-plugin</artifactId>
                <version>6.1.7</version>
                <configuration>
                    <connectors>
                        <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">
                            <port>8888</port>
                            <maxIdleTime>30000</maxIdleTime>
                        </connector>
                    </connectors>
                    <webAppSourceDirectory>$project.build.directory/$pom.artifactId-$pom.version
                    </webAppSourceDirectory>
                    <contextPath>/</contextPath>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

编写配置文件applicationContext-mybatis.xml applicationContext.xml

 

  •    注解释开发

   注解驱动

<context:annotation-config/>

   用注解方式注入bean,并指定查找范围:com.ht及子子孙孙包

<context:component-scan base-package="com.ht"/>
  • 引入外部jdbc配置文件
<context:property-placeholder location="classpath:jdbc.properties"/>
  • 配置dbcp2数据库连接池
  • spring和mybatis整合
  • 注解式事物配置

  配置事务管理(环绕通知) 有关数据库操作的开启、提交操作都是在环绕在数据库操作的前后

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource" />
  </bean>
  <tx:annotation-driven transaction-manager="transactionManager" />
  <aop:aspectj-autoproxy/>
  • 开启动态代理
  <aop:aspectj-autoproxy/>

  @Repository:将DAO类声明为Bean

 @Service:通常作用在业务层

   @Constroller:通常作用在控制层,将在Spring MVC中使用

   @Component:是一个泛化的概念,仅仅表示spring中的一个组件(Bean),可以作用在任何层次

   @Scope:模式声明(singleton|prototype)

   @Autowired:将自动在代码上下文与其匹配(默认是类型匹配)的Bean,并自动注入到相应的地方

   @Resource:

   1)@Resource后面没有任何内容,默认通过name属性去匹配bean,找不到再按type去匹配

   2)指定了name或者type则根据指定的类型去匹配bean

   3)指定了name和type则根据指定的name和type去匹配bean,任何一个不匹配都将报错

题:@Autowired和@Resource两个注解的区别:

   1)@Autowired默认按照byType方式进行bean匹配,@Resource默认按照byName方式进行bean匹配

   2)@Autowired是Spring的注解,@Resource是J2EE的注解,这个看一下导入注解的时候这两个注解的包名就一清二楚了

   Spring属于第三方的,J2EE是Java自己的东西,因此,建议使用@Resource注解,以减少代码和Spring之间的耦合。

   @Transactional

   注:个人感觉注解式事务比以前的声明式事务更加麻烦,要写的东西更多

  applicationContext-Mybatis.xml 这是spring整合mybatis 的配置文件

 

applicationContext-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.xsd
       http://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.huangting及子子孙孙包-->
  <context:component-scan base-package="com.ht"/>

  <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/ht/**/mapper/*.xml"/>
    <!-- 指定别名 -->
    <property name="typeAliasesPackage" value="com/ht/**/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/javaxl/ssm/**/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/ht/**/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>

  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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

  <!--整合mybatis框架-->
  <import resource="applicationContext-mybatis.xml"></import>

</beans>

Spring Test+junit完美组合

 

  我们来测试一下

首先在service层中创建包类

BookService

package com.ht.service;
import com.ht.Util.PageBean;
import com.ht.model.Book;
import java.util.List;
import java.util.Map;

/**
 * @author 黄大娘
 * @company dogson有限公司
 * @create  2019-09-24 20:10
 */
public interface BookService 
    int deleteByPrimaryKey(Integer bid);

    int insert(Book record);

    int insertSelective(Book record);

    Book selectByPrimaryKey(Integer bid);

    int updateByPrimaryKeySelective(Book record);

    int updateByPrimaryKey(Book record);、

BookServiceipml

package com.ht.service.ipml;
import com.ht.Util.PageBean;
import com.ht.mapper.BookMapper;
import com.ht.model.Book;
import com.ht.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
import java.util.Map;
/**
 * @author 黄大娘
 * @company dogson有限公司
 * @create  2019-09-24 22:58
 */
@Service
public class BookServiceIpml implements BookService 
    @Autowired
    private BookMapper bookMapper;

    @Override
    public int deleteByPrimaryKey(Integer bid) 
        return bookMapper.deleteByPrimaryKey(bid);
    

    @Override
    public int insert(Book record) 
        return bookMapper.insert(record);
    

    @Override
    public int insertSelective(Book record) 
        return bookMapper.insertSelective(record);
    

    @Override
    public Book selectByPrimaryKey(Integer bid) 
        return bookMapper.selectByPrimaryKey(bid);
    


    @Override
    public int updateByPrimaryKeySelective(Book record) 
        return bookMapper.updateByPrimaryKeySelective(record);
    

    @Override
    public int updateByPrimaryKey(Book record) 
        return bookMapper.updateByPrimaryKey(record);
    

SpringBaseTest

package com.ht.Test;
import com.ht.Util.PageBean;
import com.ht.model.Book;
import org.junit.Before;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * @author 黄大娘
 * @company dogson有限公司
 * @create  2019-09-24 23:09
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:applicationContext.xml")
public class SpringBaseTest 
    protected Book book;
    protected PageBean pageBean;

    @Before
    public void init()
        book = new Book();
        pageBean = new PageBean();
    

  测试:

SpringBaseTestipml
package com.ht.service.ipml;
import com.ht.Test.SpringBaseTest;
import com.ht.service.BookService;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * @author 黄大娘
 * @company dogson有限公司
 * @create  2019-09-25 0:37
 */
public class SpringBaseTestipml extends SpringBaseTest 
    @Autowired
    private BookService bookService;
    @Test
    public void insert() 
        book.setBid(8);
        book.setBname("墙头马上遥相顾");
        book.setPrice(45.6);
        int n = this.bookService.insert(book);
        System.out.println(n);
    

效果:

技术图片




Aop整合pagehelper插件 

  注意:记得开动态代理

@Around("execution(* *..*Service.*pager(..))")
public Object invoke(ProceedingJoinPoint args)

execution(方法修饰符  方法返回值  方法所属类 匹配方法名 (  方法中的形参表 )  方法申明抛出的异常  )

"*"  :代表一个任意类型的参数;

“..”:代表零个或多个任意类型的参数。

  设置方法接口

  BookMapper

//用来测试的接口,一个符合规则,一个不符合规则
    List<Map> hhhh(Map map);

  配置映射BookMapper.xml文件

  <select id="hhhh" resultType="java.util.Map" parameterType="java.util.Map">
    select * from t_mvc_book
    <where>
      <if test="null != bname and bname !=‘‘">
        and bname like #bname
      </if>
    </where>
  </select>

 

  BookService

//用来测试的接口,一个符合规则,一个不符合规则
    List<Map> hhhh(Map map,PageBean pageBean);

    List<Map> listPager (Map map, PageBean pageBean);

  BookServiceIpml

 @Override
    public List<Map> hhhh(Map map,PageBean pageBean) 
        return this.bookMapper.hhhh(map);
    

    @Override
    public List<Map> listPager(Map map, PageBean pageBean) 
        return this.bookMapper.hhhh(map);
    

PagerAspect

package com.ht;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.ht.Util.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 黄大娘
 * @company dogson有限公司
 * @create  2019-09-25 1:32
 *  处理 * * ..*Service.*Pager 这个方法,只要调用这个方法,就能够达到分页的效果
 *  PageHelper.start()
 *  调用目标方法之前
 *  处理结果集
 */
@Component
@Aspect
public class PagerAspect 
    @Around("execution(* * ..*Service.*Pager(..))")
    public Object invoke(ProceedingJoinPoint args) throws Throwable
        //判断符合条件的方法中是否包含pageBean参数
        Object [] params= args.getArgs();
        PageBean pageBean = null;
        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 (pageBean!=null && pageBean.isPagination())
            PageInfo pageInfo = new PageInfo((List) list);
            pageBean.setTotal(pageInfo.getTotal()+"");
        
        return list;
    

测试:

  SpringBaseTestipml

 @Test
    public void hhhh() 
        Map map = new HashMap();
        map.put("bname", StringUtils.toLikeStr("圣墟"));
        List<Map> hhhh = this.bookService.hhhh(map,pageBean);
        for (Map m : hhhh) 
            System.out.println(m);
        
    

  这个是不进行分页的方法

  效果:

技术图片

  SpringBaseTestipml

 @Test
    public void listPager() 
        Map map = new HashMap();
        map.put("bname", StringUtils.toLikeStr("圣墟"));
        List<Map> listPager = this.bookService.listPager(map,pageBean);
        for (Map m : listPager) 
            System.out.println(m);
        
    

  调用分页方法去查询显示前十条数据

技术图片

 

 

谢谢观看!

以上是关于mybatis与Spring集成(Aop整合PagerAspect插件)的主要内容,如果未能解决你的问题,请参考以下文章

mybatis与spring的整合

spring与mybatis集成

spring与mybatis集成

Spring与Mybatis三种常用整合方法(一闪而过)

Mybatis系列六:与Spring MVC的集成

Spring和MyBatis环境整合