Mybatis与Spring集成

1.添加相关的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>com.hmc</groupId>
  <artifactId>ssm</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>ssm Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <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>
    <!--junit-->
    <junit.version>4.12</junit.version>
    <!--servlet  -->
    <servlet.version>4.0.0</servlet.version>
    <!--5.0.2.RELEASE-->
    <spring.version>5.0.2.RELEASE</spring.version>
    <!--mybatis-->
    <mybatis-version>3.4.5</mybatis-version>
    <!--mysql-->
    <mysql.version>5.1.44</mysql.version>
    <!--pagehelper-->
    <pagehelper.version>5.1.2</pagehelper.version>

    <!--mybatis与spring集成jar-->
    <mybatis.spring.version>1.3.1</mybatis.spring.version>

    <!--dbcb2连接池-->
    <commons.dbcp2.version>2.1.1</commons.dbcp2.version>
    <commons.pool2.version>2.4.3</commons.pool2.version>
    <!--lofj2-->
    <lofj2.version>2.9.1</lofj2.version>

    <!--lombok-->
    <lombok.version>1.18.2</lombok.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>

    <!--servlet  -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>${servlet.version}</version>
      <scope>provided</scope>
    </dependency>

    <!--spring-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <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>


    <!--mysql-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis-version}</version>
    </dependency>

    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>${pagehelper.version}</version>
    </dependency>

    <!--mybatis与spring集成jar-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>${mybatis.spring.version}</version>
    </dependency>

    <!--dbcp2数据库连接池-->
    <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>

    <!--lofj2-->
    <!-- log配置:Log4j2 + Slf4j -->
    <!-- slf4j核心包 -->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.7</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jcl-over-slf4j</artifactId>
      <version>1.7.7</version>
      <scope>runtime</scope>
    </dependency>

    <!--用于与slf4j保持桥接 -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-slf4j-impl</artifactId>
      <version>2.9.1</version>
    </dependency>

    <!--核心log4j2jar包 -->
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-api</artifactId>
      <version>2.9.1</version>
    </dependency>
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j-core</artifactId>
      <version>2.9.1</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>2.9.1</version>
      <scope>runtime</scope>
    </dependency>
    <!--需要使用log4j2的AsyncLogger需要包含disruptor -->
    <dependency>
      <groupId>com.lmax</groupId>
      <artifactId>disruptor</artifactId>
      <version>3.2.0</version>
    </dependency>


    <!--ehcache相关依赖-->
    <!--spring对ehcache的相关支持-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!--mybatis与ehcache整合-->
    <dependency>
      <groupId>org.mybatis.caches</groupId>
      <artifactId>mybatis-ehcache</artifactId>
      <version>1.1.0</version>
    </dependency>

    <!--ehcache依赖-->
    <dependency>
      <groupId>net.sf.ehcache</groupId>
      <artifactId>ehcache</artifactId>
      <version>2.10.0</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>ssm</finalName>
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
      <!--对应的资源目录-->
      <resource>
        <directory>src/main/resources</directory>
        <includes>
          <include>*.properties</include>
          <include>*.xml</include>
        </includes>
      </resource>
    </resources>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.7.0</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>


      </plugins>
    </pluginManagement>
  </build>
</project>

 

 

2.创建spring配置文件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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
     <!--1.开启注解,并指定扫描位置-->
    <!-- 注解驱动 -->
    <context:annotation-config/>
    <!-- 用注解方式注入bean,并指定查找范围:com.zking.ssh2及子子孙孙包-->
    <context:component-scan base-package="com.hmc.ssm"/>
     <!--2.导入外部jdbc数据库连接配置-->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--3.配置dbcp2数据库连接池-->
    <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与mybatis集成配置-->
    <!--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/hmc/ssm/**/mapper/*.xml"/>
        <!-- 指定别名 -->
       <!-- <property name="typeAliasesPackage" value="com/hmc/ssm/**/model"/>-->
        <!--<property name="configurationProperties">
            <props>
                &lt;!&ndash;开启驼峰命名&ndash;&gt;
            <prop key="mapUnderscoreToCamelCase">true</prop>
            </props>
        </property>-->
        <!--设置mybaits对缓存的支持-->
        <property name="configurationProperties">
            <props>
                <!-- 全局映射器启用缓存 *主要将此属性设置完成即可-->
                <prop key="cacheEnabled">true</prop>
                <!-- 查询时,关闭关联对象即时加载以提高性能 -->
                <prop key="lazyLoadingEnabled">false</prop>
                <!-- 设置关联对象加载的形态,此处为按需加载字段(加载字段由SQL指 定),不会加载关联表的所有字段,以提高性能 -->
                <prop key="aggressiveLazyLoading">true</prop>
            </props>

        </property>

        <!--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/zking/oa/**/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/hmc/ssm/**/mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>
     <!--5.配置注解式事务(推荐使用声明式事务)-->

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager" />

    <!--6.开启动态代理-->
    <aop:aspectj-autoproxy/>
</beans>

 

 

3.注解式开发

@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

问题:@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。

 

@Repository:将DAO类声明为Bean

 

 

 

 

@Service:通常作用在业务层

@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

 

 

 

 

4.Spring Test+Junit完美组合

4.1 在工程的pom文件中增加spring-test的依赖

4.Spring Test+Junit完美组合

4.1 在工程的pom文件中增加spring-test的依赖

 

 

 

 

 

4.2 创建测试类,并在该类上加上两个注解

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:“spring-mybatis.xml"})

 

 

 

测试查询单条数据

public class IBookServiceImplTest {

    @Autowired
    private IBookService IBookService;

    private Book Book;

    @After
    public  void  setup(){

        Book=new Book();
    }

    @Test
    public void book() {
        Book book = IBookService.selectByPrimaryKey(700);
        System.out.println(book);
//        System.out.println("------------------");
       // Book book2= IBookService.selectByPrimaryKey(701);
//         System.out.println(book2);
    }

 

 

 

 

 

 

 

 

 

5.使用aop思想进行分页

1.定义切面类  PageAspect

   

  @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

 

 

@Aspect 表示将这个类定义为切面类,让sprig进行管理

 

 

@Component
@Aspect
public class PageAspect {
    //环绕通知注解(切入点)
    @Around(value="execution(* *..*Service.*Page(..))")
   public Object invoke(ProceedingJoinPoint joinPoint) throws Throwable {
   //1.获取目标方法的执行参数
  Object[] arrgs= joinPoint.getArgs();
  //定义PageBean对象
        PageBean pageBean=null;
  //循环遍历参数
        for (Object arg : arrgs) {
            if (arg instanceof  PageBean){
                pageBean=(PageBean)arg;
                break;
            }
        }
        //2.判断是否分页,并设置分页参数PageHelper中
        if(null!=pageBean&&pageBean.isPagination()){
            PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
        }
        //3 执行目标方法
        Object result=joinPoint.proceed(arrgs);

        //4.获取分页信息
        if(null!=pageBean&&pageBean.isPagination()&&
                null!=result&&result instanceof List){
            List lst=(List)result;
            PageInfo PageInfo=new PageInfo(lst);
            pageBean.setTotal(PageInfo.getTotal()+"");
        }
        return  result;
   }

 

 /**pointcut属性用来定义一个切入点,分成四个部分理解 [* ][*..][*Biz][.*(..)]
<!-- A: 返回类型,*表示返回类型不限 -->
<!-- B: 包名,*..表示包名不限 -->
<!-- C: 类或接口名,*Biz表示类或接口必须以Biz结尾 -->
<!-- D: 方法名和参数,*(..)表示方法名不限,参数类型和个数不限 -->
**/

测试分页效果

 

 

 @Test
    public void Test(){
        PageBean PageBean=new PageBean();
        List<Book> books = IBookService.queryPage(Book, PageBean);
        System.out.println("总记录数"+PageBean.getTotal());
        System.out.println("分页");
        for (Book book : books) {
            System.out.println(book);
        }
    }

 

 

 

 

接下来我们在使用aop实现以下简单的日志功能

在切面类添加以下方法

 

   //定义切入点
  @Pointcut("execution(* *..*Service.*(..))")
   public void Pointcut(){
   }


//   //前置通知,将前置通知织入到Pointcut()切入点
    @Around("Pointcut()")
    public String  Around(ProceedingJoinPoint joinPoint){
        //1.获取目标方法的执行参数
        Object[] args = joinPoint.getArgs();//2.
        //目标对象
        Object aThis = joinPoint.getThis();

        Object target = joinPoint.getTarget().getClass().getName();
        System.out.println("执行时间"+new Date());
        System.out.println("类全路径+"+target);
        System.out.println("参数:"+args[0]+"--------");
        System.out.println("执行的方法"+joinPoint.getSignature().getName());
        return "执行成功";
    }

 

 

 

 

我们看一下结果

 

 

 

 

 

 

posted @ 2019-10-18 23:11  小蜜疯  阅读(222)  评论(0编辑  收藏  举报