项目结构
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>org.example</groupId>
<artifactId>testSpringMybatis</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>testSpringMybatis 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>1.7</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>
<!-- 1.导入Spring相关的jar包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
<!-- 导入mybatis的jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.37</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- 配置日志信息-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- spring 整合 mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.18.RELEASE</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<!-- 将Mapper的映射文件拷贝出来 -->
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
<finalName>testSpringMybatis</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>mybatis配置文件
<?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>
<!--配置db.properties 转移到spring中-->
<!--<properties resource="db.properties" />-->
<!-- 配置日志管理 -->
<settings>
<setting name="logImpl" value="STDOUT_LOGGING"/>
</settings>
<!-- 设置别名-->
<typeAliases>
<package name="com.test.pojo" />
</typeAliases>
<!-- 转移到spring配置文件中 -->
<!--<environments default="development">-->
<!--<environment id="development">-->
<!--<transactionManager type="JDBC"/>-->
<!--<dataSource type="POOLED">-->
<!--<property name="driver" value="${driverClass}"/>-->
<!--<property name="url" value="${url}"/>-->
<!--<property name="username" value="${user}"/>-->
<!--<property name="password" value="${password}"/>-->
<!--</dataSource>-->
<!--</environment>-->
<!--</environments>-->
<!--注册mapper文件-->
<mappers>
<package name="com.test.mapper" />
</mappers>
</configuration>spring配置文件
<?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"
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">
<!-- 1.扫描包中的注解 -->
<context:component-scan base-package="com.test" />
<!--导入db.properties文件-->
<context:property-placeholder location="classpath:db.properties" />
<!--创建了数据源 -->
<bean id="comboPooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${driverClass}" />
<property name="jdbcUrl" value="${url}"/>
<property name="user" value="${user}" />
<property name="password" value="${password}" />
</bean>
<!--创建SqlSessionFactory对象 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="comboPooledDataSource" />
<property name="configLocation" value="classpath:sqlMapConfig.xml" />
</bean>
</beans>spring帮我们创建dao层
在spring配置文件中添加如下配置
<!-- 配置映射文件的扫描器 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.test.mapper"/>
</bean>在service中注入itemsMapper
@Autowired
private ItemsMapper itemsMapper;原来的dao层可以删除
mybatis配置文件中的注册mapper可以删除
