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" 
4000
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