mybatis整合spring自己使用的一种框架结构

1.整合环境

spring  ,springmvc的jar, 

数据库驱动包 ,

 mybatis的 jar包,

 mybatis-spring整合包 ,

 数据库连接池的jar包,

jstl的支持包

2.创建存放java类的package包

如:cn.itcast.ssm.controller(控制类)

     cn.itcast.ssm.mapper(mapper.xml和mapper.java)

     cn.itcast.ssm.po (实体类)

     cn.itcast.ssm.service (业务逻辑)

3.整合持久层(dao层)

   3.1sqlMapperConfig.xml

        在resource下建文件存放,<mapper>标签不用配置,使用springmybatis整合包进行扫描,必须遵循:mapper.xml和mapper.java在同一个目录下,并且同名,在sqlMapperConfig.xml配置文件中配置别名等

<?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="cn.itcast.ssm.po" />    </typeAliases></configuration>

     3.2配置applicationContext-dao.xml 

配置数据源 ,sqlSessionFactory , mapper扫描器,在resource中建spring文件夹存放 

<!--引入数据库的配置文件,放在resource下 ,数据库的配置文件变量要有特殊性,如下面的jdbc.driver-->

 <context:property-placeholder location="classpath:db.properties"/>    <!--配置数据源-->    <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">        <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sqlSessionFactory-->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="dataSource" ref="dataSource"/>        <property name="configLocation" value="classpath:mapper/sqlMapConfig.xml"/>    </bean>    <!--自动扫描mapper创建代理对象并注册到spring容器-->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" >        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>        <property name="basePackage" value="cn.itcast.ssm.mapper"/>    </bean>

       3.3 运用逆向工程来生成po和mapper.java以及mapper.xml(单表查询的)

     3.4 可以自定义mapper ,但mapper.xml和mapper.java必须放在同一目录下(mapper.xml和mapper.java表示同名是一个概称,不一定用mapper做文件名,)

4.整合Service(业务逻辑层)

   4.1定义一个接口  

  4.2编写4.1接口中实现类,(自己试验的时候有接口的话,将实现类或接口作为Service,不能注入mapper.java,只有将接口删除,在原来的实现类上加@Service才行,原因不明)

         在实现类中用@Autowired 自动注入mapper的java类,因为上述说过,使用mapper扫描器自动扫瞄了,所以已经加载到spring容器,可以自动注入

   4.3在spring容器配置Service

        在resource/spring文件夹下,创建applicationContext-service.xml,在里面加一行扫瞄

    <context:component-scan base-package="cn.itcast.ssm.service.impl" />

   4.4 事务控制 applicationContext-transaction.xml

         在xml中使用spring声明式事务控制方法进行配置

 <import resource="applicationContext-dao.xml"/>    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">          <property name="dataSource" ref="dataSource"/>    </bean>    <!--通知-->    <tx:advice id="txAdvice" transaction-manager="transactionManager">       <!--传播行为-->        <tx:attributes>            <tx:method name="save*" propagation="REQUIRED"/>            <tx:method name="update*" propagation="REQUIRED"/>            <tx:method name="select*" propagation="REQUIRED"/>            <tx:method name="insert*" propagation="REQUIRED"/>        </tx:attributes>    </tx:advice>    <!--切点植入-->    <aop:config>        <aop:advisor advice-ref="txAdvice"                     pointcut="execution(* cn.itcast.ssm.service.impl.*.*(..))"/>    </aop:config>

5.springmvc整合

   5.1创建springmvc.xml文件

        配置处理器映射器,适配器,视图解析器 

    <context:component-scan base-package="cn.itcast.ssm.controller"/>    <mvc:annotation-driven/>   <!--代替处理器映射器,适配器-->    <!-- 视图解析器-->    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/jsp/"/>        <property name="suffix" value=".jsp"/>    </bean>

   5.2 配置前端控制器web.xml

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xmlns="http://java.sun.com/xml/ns/javaee"         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"         version="3.0">  <display-name>Archetype Created Web Application</display-name><!-- spring监听器-->  <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:spring/applicationContext-*.xml</param-value>  </context-param>  <!-- 编码过滤器 -->  <filter>    <filter-name>encodingFilter</filter-name>    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>    <async-supported>true</async-supported>    <init-param>      <param-name>encoding</param-name>      <param-value>UTF-8</param-value>    </init-param>  </filter>  <filter-mapping>    <filter-name>encodingFilter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>  <!-- Spring监听器 -->  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>  <!-- 防止Spring内存溢出监听器 -->  <listener>    <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>  </listener>  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:spring/spring.xml</param-value>    </init-param>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>

6.编写controller和jsp调试

附录一:pom.xml

<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">  <modelVersion>4.0.0</modelVersion>  <groupId>cn.ssm.controller</groupId>  <artifactId>MybatisSpringTest2</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>MybatisSpringTest2 Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <!-- spring版本号 -->    <spring.version>4.3.6.RELEASE</spring.version>    <!-- mybatis版本号 -->    <mybatis.version>3.4.5</mybatis.version>    <!-- log4j日志文件管理包版本 -->    <slf4j.version>1.7.7</slf4j.version>    <log4j.version>1.2.17</log4j.version>  </properties>  <dependencies>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>3.8.1</version>      <scope>test</scope>    </dependency>    <dependency>      <groupId>org.apache.commons</groupId>      <artifactId>commons-pool2</artifactId>      <version>2.4.2</version>    </dependency>    <!--数据库驱动包-->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>5.1.22</version>    </dependency>    <!--dbcp 的jar包-->    <dependency>      <groupId>org.apache.commons</groupId>      <artifactId>commons-dbcp2</artifactId>      <version>2.1.1</version>    </dependency>    <dependency>      <groupId>javax.servlet</groupId>      <artifactId>javax.servlet-api</artifactId>      <version>3.0.1</version>    </dependency>    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.12</version>      <!-- 表示开发的时候引入，发布的时候不会加载此包 -->      <scope>test</scope>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-core</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-oxm</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-jdbc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aop</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-context-support</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-test</artifactId>      <version>${spring.version}</version>    </dependency>    <!-- mybatis核心包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis</artifactId>      <version>${mybatis.version}</version>    </dependency>    <!-- mybatis/spring包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis-spring</artifactId>      <version>1.3.1</version>    </dependency>    <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->    <dependency>      <groupId>commons-dbcp</groupId>      <artifactId>commons-dbcp</artifactId>      <version>1.2.2</version>    </dependency>    <!-- JSTL标签类 -->    <dependency>      <groupId>jstl</groupId>      <artifactId>jstl</artifactId>      <version>1.2</version>    </dependency>    <!-- 日志文件管理包 -->    <!-- log start -->    <dependency>      <groupId>log4j</groupId>      <artifactId>log4j</artifactId>      <version>${log4j.version}</version>    </dependency>    <!-- Hibernate Validator -->    <dependency>      <groupId>javax.persistence</groupId>      <artifactId>persistence-api</artifactId>      <version>1.0.2</version>    </dependency>    <dependency>      <groupId>javax.validation</groupId>      <artifactId>validation-api</artifactId>      <version>1.1.0.Final</version>    </dependency>    <dependency>      <groupId>org.hibernate</groupId>      <artifactId>hibernate-validator</artifactId>      <version>5.2.2.Final</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-api</artifactId>      <version>${slf4j.version}</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-log4j12</artifactId>      <version>${slf4j.version}</version>    </dependency>    <!-- log end -->  </dependencies>  <build>    <finalName>MybatisSpringTest2</finalName>    <plugins>      <plugin>        <groupId>org.apache.tomcat.maven</groupId>        <artifactId>tomcat7-maven-plugin</artifactId>        <version>2.2</version>        <configuration>          <!-- 此为管理员路径，不是部署路径 -->          <url>http://localhost:8080/manager/text</url>          <uriEncoding>utf-8</uriEncoding><!-- <update>true</update> <server>tomcat</server> --><!-- 此处为服务器上的用户名和密码，早tomcat-user里设置 -->          <!-- 格式如 <role rolename="tomcat"/> <role rolename="manager"/> <role              rolename="admin"/> <role rolename="manager-gui"/> <role rolename="manager-script"/>              <user username="admin" password="admin" roles="tomcat，manager,admin,manager-gui,manager-script"/> -->          <server>tomcat7</server>          <username>admin</username>          <password>admin</password>        </configuration>      </plugin>    </plugins>    <resources>      <resource>        <directory>src/main/resources</directory>        <includes>          <include>**/*.properties</include>          <include>**/*.xml</include>          <include>**/*.tld</include>        </includes>        <filtering>false</filtering>      </resource>      <resource>        <directory>src/main/java</directory>        <includes>          <include>**/*.properties</include>          <include>**/*.xml</include>          <include>**/*.tld</include>        </includes>        <filtering>false</filtering>      </resource>    </resources>  </build></project>

附录二：项目架构