(三) ssm -- spring 整合mybatis
<?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>
<!-- 分页插件 -->
<plugins>
<plugin interceptor="com.github.pagehelper.PageInterceptor">
<!-- 该参数默认为false 设置为true时,会将RowBounds第一个参数offset当成pageNum页码使用和startPage中的pageNum效果一样 -->
<property name="offsetAsPageNum" value="true"/>
<!-- 该参数默认为false设置为true是,使用RowBounds分页会进行count查询 -->
<property name="rowBoundsWithCount" value="true"/>
<!-- 设置为true时,如果pageSize=0或者ROwRounds.limit=0就会查询出全部的结果(相当于每一偶执行分页查询,但是返回结果仍然是page类型) -->
<property name="pageSizeZero" value="true"/>
</plugin>
</plugins>
</configuration>
创建好 mybatis-config.xml文件后 需要创建spring-context.xml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:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 扫描service层 --> <context:component-scan base-package="com.taotao.service"></context:component-scan> <!-- 扫描jdbc.properties配置文件 --> <context:property-placeholder location="classpath:jdbc.properties"/> <!-- 配置c3p0 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="${driver}" /> <property name="jdbcUrl" value="${url}" /> <property name="user" value="${username}" /> <property name="password" value="${password}" /> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <property name="dataSource" ref="dataSource"></property> <property name="typeAliasesPackage" value="com.taotao.pojo"></property> <property name="mapperLocations" value="classpath:com/taotao/dao/*Mapper.xml"></property> </bean> <!-- 扫描生成所有dao层 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.taotao.dao"></property> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 使用注解来控制事务 --> <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven> </beans>
直接把mybatis配置写在spring 配置文件中 引用了jdbc.properties文件
需要注意扫描 mapper.xml文件位置
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/taotao?serverTimezone=UTC username=root password=root
在web.xml配置spring
<!-- 配置适配器spring -->
<listener>
<description>启动spring容器</description>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>
如以上配置完成 启动项目看是否报错 成功 / 创建测试类 测试数据访问层是否成功
整体成功 框架搭好了
注意项目使用 mybatis的反向工程 下载地址
链接: https://pan.baidu.com/s/1db4FlPFAWZpNIyAl2BBx4A 密码: jqa9

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