springMVC +mybatis的配置

工程（包）下载

1. 新建一个web工程

2. 导入相关的包

3. 配置Web.xml文件（加载配置文件，配置SpringMvc 分发器）

Web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <display-name>SpringMvcTest</display-name>

<!--1.初始化参数配置 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*</url-pattern>
</filter-mapping>

<!--2.加载配置文件项 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/classes/dao.xml
</param-value>
</context-param>
<!--1.ContextLoaderListener的作用就是启动Web容器时，自动装配ApplicationContext的配置信息。
2.ContextLoader创建的是 XmlWebApplicationContext这样一个类，它实现的接口是WebApplicationContext->
ConfigurableWebApplicationContext->ApplicationContext->
BeanFactory这样一来spring中的所有bean都由这个类来创建
-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!--3.配置springMvc 分发器 -->
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/classes/servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

建包分控制层，DAO层，service层



配置servlet.xml(注解扫描配置。静态资源转发。视图解析器配置)

servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" 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-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"> <!-- 注解驱动 -->
<mvc:annotation-driven />
<!--注解扫描 -->
<context:component-scan
base-package="com.szzt.SpringMvcTest.controller,com.szzt.SpringMvcTest.dao,com.szzt.SpringMvcTest.service" />

<!-- 静态资源访问配置 -->
<mvc:resources mapping="/css/**" location="/css/" />
<mvc:resources mapping="/img/**" location="/img/" />
<mvc:resources mapping="/js/**" location="/js/" />
<mvc:resources mapping="/**" location="/" />

<!--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>
</beans>

配置 database.properties文件

database.properties

#mysql
db.username=root
db.password=123456
db.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8

配置dao.xml(数据库的配置。加载数据库database.propert

dao.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:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> 
<!-- 配置数据源属性文件 -->
<bean id="propertyConfigurer"
class="org.springframework.context.support.PropertySourcesPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:database.properties</value>
</list>
</property>
</bean>

<!-- 配置数据源 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="url" value="${db.url}" /> <property name="username" value="${db.username}" /> <property name="password" value="${db.password}" />
</bean>

<!-- 2. mybatis的SqlSession的工厂: SqlSessionFactoryBean dataSource:引用数据源
MyBatis定义数据源,同意加载配置 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:sqlMapConfig.xml" />
<property name="dataSource" ref="dataSource" />
</bean>

<!-- 3. mybatis自动扫描加载Sql映射文件/接口 : MapperScannerConfigurer sqlSessionFactory
basePackage:指定sql映射文件/接口所在的包（自动扫描） -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="annotationClass"
value="org.springframework.stereotype.Repository" />
<property name="basePackage" value="com.szzt.SpringMvcTest.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>

<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>

<!-- 启动spring事务注解，事务注解尽在此 -->
<tx:annotation-driven transaction-manager="transactionManager" />

<!-- 自动扫描 -->
<context:component-scan base-package="com.szzt.SpringMvcTest.dao" />

</beans>

配置sqlMapConfig.xml

sqlMapConfig.xml

<?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>

<!-- 实体类,简称 -设置别名 -->

</configuration>

Test.java

@Controller
@RequestMapping(value = "/min")
public class Test {
@Autowired
private IInfoMapper info;

@RequestMapping(value = "/min")
String min(){
System.out.println("111111111111111");
info.queryInfo(1);
System.out.println("2222222222222222");
return "min";

}

IInfoMapper.java

@Repository
@Transactional
public interface IInfoMapper {
/**
* 数据插入
* */
public String queryInfo(int id);
}
IinfoMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.szzt.SpringMvcTest.dao.IInfoMapper">
<select id="queryInfo" resultType="java.lang.String" parameterType="java.lang.Integer">
select * from info where id=#{id}
</select>

</mapper>

/测试spring与mybatis 集成/

JunitDemo.java

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath*:dao.xml"})
public class JunitDemo {

@Autowired
private IInfoMapper info;

@Test
public void testQueryBatis(){

System.out.println("zzzzzzzzzzzzzzzzzzzzzzzzzzzzz");
info.queryInfo(1);
//System.out.println(info.queryInfo(1));
}
}