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详解Spring与Mybatis整合方法(基于IDEA中的Maven整合)

2020年10月17日  | 萬仟网IT编程  | 我要评论
项目结构项目路径可以自己定义,只要路径映射正确就可以pom.xml <properties> <spring.version>5.1.5.release</spring.

项目结构

在这里插入图片描述

项目路径可以自己定义,只要路径映射正确就可以

pom.xml

 <properties>
 <spring.version>5.1.5.release</spring.version>
 <mybatis.version>3.4.6</mybatis.version>
 <log4j.version>1.2.17</log4j.version>
 </properties>
 <dependencies>
 <!-- 测试包 -->
 <dependency>
  <groupid>junit</groupid>
  <artifactid>junit</artifactid>
  <version>4.11</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.projectlombok</groupid>
  <artifactid>lombok</artifactid>
  <version>1.18.14</version>
  <scope>provided</scope>
 </dependency>
 <!-- spring核心包 -->
 <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>${spring.version}</version>
 </dependency>
 <dependency>
  <groupid>org.springframework</groupid>
  <artifactid>spring-context</artifactid>
  <version>${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>1.3.2</version>
 </dependency>
 <!-- 导入mysql数据库链接jar包 -->
 <dependency>
  <groupid>mysql</groupid>
  <artifactid>mysql-connector-java</artifactid>
  <version>5.1.17</version>
 </dependency>
 <dependency>
  <groupid>com.mchange</groupid>
  <artifactid>c3p0</artifactid>
  <version>0.9.5.5</version>
 </dependency>

 <dependency>
  <groupid>jstl</groupid>
  <artifactid>jstl</artifactid>
  <version>1.2</version>
 </dependency>
 <dependency>
  <groupid>org.apache.commons</groupid>
  <artifactid>commons-dbcp2</artifactid>
  <version>2.7.0</version>
 </dependency>
 <dependency>
  <groupid>commons-io</groupid>
  <artifactid>commons-io</artifactid>
  <version>2.4</version>
 </dependency>
 <dependency>
  <groupid>commons-logging</groupid>
  <artifactid>commons-logging</artifactid>
  <version>1.2</version>
 </dependency>
 <dependency>
  <groupid>org.junit.jupiter</groupid>
  <artifactid>junit-jupiter</artifactid>
  <version>release</version>
  <scope>compile</scope>
 </dependency>
 </dependencies>

emp.java,empmapper.java, empmapper.xml

https://www.jb51.net/article/197594.htm

db.properties

# mysql
jdbc.url=jdbc:mysql://localhost:3306/jektong?useunicode=true&characterencoding=utf-8
jdbc.driver=com.mysql.jdbc.driver
jdbc.username=jektong
jdbc.password=123456

这里的key值不能写url,driver,username,password,不然后面使用${url},${username}会报错

applicationcontext.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:context="http://www.springframework.org/schema/context"
 xmlns:jdbc="http://www.springframework.org/schema/jdbc"
 xmlns:jee="http://www.springframework.org/schema/jee"
 xmlns:tx="http://www.springframework.org/schema/tx"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:mvc="http://www.springframework.org/schema/mvc"
 xmlns:util="http://www.springframework.org/schema/util"

 xsi:schemalocation="
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.1.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.1.xsd
 http://www.springframework.org/schema/jdbc
 http://www.springframework.org/schema/jdbc ">
 

	<!-- 加载配置文件并配置数据库连接池 -->
 <context:property-placeholder location="classpath:db.properties"/>

	<!--这里不要使用与name相同的属性名比如写成url-->
 <bean id="datasource" class="org.apache.commons.dbcp2.basicdatasource">
 <property name="url" value="${jdbc.url}"/>
 <property name="password" value="${jdbc.password}"/>
 <property name="username" value="${jdbc.username}"/>
 <property name="driverclassname" value="${jdbc.driver}"/>
 </bean>
 
 <!-- sqlsessionfactorybean --> 
	 <bean id="sqlsessionfactory" class="org.mybatis.spring.sqlsessionfactorybean">
		<!-- 引用数据源的组件 -->
 	 <property name="datasource" ref="datasource"/> 
 	<!-- 映射文件指定 -->
 	<property name="mapperlocations" value="classpath*:mapper/*.xml"/>
 	<!-- 类型别名 -->
 	<property name="typealiasespackage" value="com.jektong"/>
	</bean> 
	
	<!-- sqlsessionfactory已经过时,使用sqlsessionfactorybeanname,ref改为value -->
	<bean class="org.mybatis.spring.mapper.mapperscannerconfigurer">
 <property name="sqlsessionfactorybeanname" value="sqlsessionfactory"/>
 <property name="basepackage" value="com.jektong.dao"/>
	</bean>
</beans>

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