整合的方式
新建 maven 项目
引入依赖包
配置资源文件
案例实操
新建 maven 项目
新建 maven 项目 spring_mybatis
目录结构如下:
主目录包:
com.xxx.dao、
com.xxx.mapper、
com.xxx.service、
com.xxx.service.impl
测试包：spring_mybatis
引入依赖包
打开 pom.xml 开始添加依赖包
<?xmlversion="1.0" encoding="UTF-8"?>
<projectxmlns="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.xxx</groupId>
<artifactId>test-xxxms</artifactId>
<version>1.0-SNAPSHOT</version>
<name>test-xxxms</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>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- spring 核心jar -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<!-- spring 测试jar -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<!-- spring jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<!-- spring事物 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<!-- c3p0 连接池 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<!-- 添加mybatis与Spring整合的核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<!-- mysql 驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
<!-- 日志打印相关的jar -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.2</version>
</dependency>
</dependencies>
<build>
<finalName>tpl-web</finalName>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.properties</include>
</includes>
</resource>
</resources>
</build>
</project>
配置资源文件
a) Spring 文件 spring.xml
b) Mybatis 文件 mybatis.xml
c) 数据库连接 properties 文件 db.properties
d) 日志输出文件 log4j.properties
spring.xml 文件配置
<?xmlversion="1.0" encoding="UTF-8"?>
<beansxmlns="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"
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-3.0.xsd">
<context:component-scanbase-package="com.xxx"/>
<context:property-placeholderlocation="db.properties"/>
<tx:annotation-driventransaction-manager="txManager"/>
<!-- 配置c3p0 数据源 -->
<beanid="dataSource"class="com.mchange.v2.c3p0.ComboPooledDataSource">
<propertyname="driverClass"value="${jdbc.driver}"></property>
<propertyname="jdbcUrl"value="${jdbc.url}"></property>
<propertyname="user"value="${jdbc.user}"></property>
<propertyname="password"value="${jdbc.password}"></property>
</bean>
<beanid="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<propertyname="dataSource"ref="dataSource"></property>
</bean>
<!-- 整合 框架（Spring与Mybatis） -->
<!-- 配置 sqlSessionFactory-->
<beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 数据源 -->
<propertyname="dataSource"ref="dataSource"></property>
<!-- 框架的配置文件 -->
<propertyname="configLocation"value="classpath:mybatis.xml"/>
<!-- 映射文件 -->
<propertyname="mapperLocations"value="classpath:com/xxx/dao/mapper/*.xml"/>
</bean>
<!-- 配置扫描器 -->
<beanid="mapperScanner"class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 扫描com.xxx.dao这个包以及它的子包下的所有映射接口类 -->
<propertyname="basePackage"value="com.xxx.dao"/>
<propertyname="sqlSessionFactoryBeanName"value="sqlSessionFactory"/>
</bean>
</beans>
mybatis.xml 文件配置
<?xmlversion="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--别名的配置 每个人必须会 -->
<typeAliases>
<packagename="com.xxx.model"/>
</typeAliases>
</configuration>
db.properties 文件配置（对于其它数据源属性配置，见 c3p0 配置讲解，这里采用默认属性配置）
建立数据库 mybatis（注意数据库，用户名，密码以自己本地数据库为准 ）
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=
utf8
jdbc.username=root
jdbc.password=
log4j.properties
便于控制台日志输出
# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
扩展
开始编写 helloworld
User 实体类定义
publicclassUser{
privateintid;
privateStringuserName;
privateStringuserPwd;
publicintgetId() {
returnid;
}
publicvoidsetId(intid) {
this.id=id;
}
publicStringgetUserName() {
returnuserName;
}
publicvoidsetUserName(StringuserName) {
this.userName=userName;
}
publicStringgetUserPwd() {
returnuserPwd;
}
publicvoidsetUserPwd(StringuserPwd) {
this.userPwd=userPwd;
}
@Override
publicStringtoString() {
return"User [id="+id+", userName="+userName+", userPwd="
\+userPwd+"]";
}
}
UseDao 接口与映射文件定义
UserDao 接口
publicinterfaceUserDao{
publicUserqueryUserById(intid);
}
UserMapper.xml(注意：此时映射文件命名空间定义要符合规则：接口包名.接口类
名,否则不按规则出牌，测试会报错，然后你就蒙圈了！！！)
<?xmlversion="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mappernamespace="com.xxx.dao.UserDao">
<selectid="queryUserById"parameterType="int"resultType="user">
select id,userName,userPwd from user where id=#{id}
</select>
</mapper>
UserService 接口类与实现类定义
publicinterfaceUserService{
publicUserqueryUserById();
}
UserServiceImpl 实现类(此时直接注入我们的 UserDao 接口即可，然后直接调用
其方法，事已至此，离成功仅差一步！)
@Service
publicclassUserServiceImplimplementsUserService{
@Resource
privateUserDaouserDao;
publicUserqueryUserById(){
returnuserDao.queryUserById(7);
}
}
junit 测试
因为与 spring 框架集成，我们采用 spring 框架测试 spring Test
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:spring.xml"} )
publicclassTestSpringMybatis{
@Autowired
privateUserServiceuserService;
@Test
publicvoidtestQueryUserById() {
System.out.println(userService.queryUserById(1));
}
}
结果输出
