如何基于Eclipse实现Spring与Mybatis的详细整合步骤？

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项目工程总览：项目路径并非唯一，仅需配置后的路径正确映射即可，可直接输出：Emp.java、properties、spring.version=5.1.5.RELEASE、mybatis.version=3.4.6、log4j.version=1.2.17。

项目工程总览：

项目路径建的包不是唯一，只要之后配置的路径映射正确即可

Emp.java

<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>

EmpMapper.java 与EmpMapper.xml配置

package com.jektong.dao; import java.util.List; import com.jektong.entity.Emp; /** * @author jektong * @Date 2020-10-16 10:13:12 */ public interface EmpMapper { List<Emp> selectAllEmps(); }

EmpMapper.xml配置

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.jektong.dao.EmpMapper"> <resultMap type="emp" id="empMap"> <id property="id" column="e_id" jdbcType="INTEGER" /> <result property="name" column="e_name" jdbcType="VARCHAR" /> <result property="salary" column="e_salary" jdbcType="DOUBLE" /> <result property="bonus" column="e_bonus" jdbcType="DOUBLE" /> <result property="hiredate" column="e_hiredte" jdbcType="DATE" /> <result property="deptno" column="e_deptno" jdbcType="INTEGER" /> </resultMap> <!-- 查询所有Emp --> <select id="selectAllEmps" resultType="list" resultMap="empMap"> select * from t_emp </select> </mapper>

配置数据源db.properties文件

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

配置applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="www.springframework.org/schema/beans" xmlns:xsi="www.w3.org/2001/XMLSchema-instance" xmlns:context="www.springframework.org/schema/context" xmlns:jdbc="www.springframework.org/schema/jdbc" xmlns:jee="www.springframework.org/schema/jee" xmlns:tx="www.springframework.org/schema/tx" xmlns:aop="www.springframework.org/schema/aop" xmlns:mvc="www.springframework.org/schema/mvc" xmlns:util="www.springframework.org/schema/util" xsi:schemaLocation=" www.springframework.org/schema/beans www.springframework.org/schema/beans/spring-beans-4.1.xsd www.springframework.org/schema/context www.springframework.org/schema/context/spring-context-4.1.xsd www.springframework.org/schema/jdbc www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd www.springframework.org/schema/jee www.springframework.org/schema/jee/spring-jee-4.1.xsd www.springframework.org/schema/tx www.springframework.org/schema/tx/spring-tx-4.1.xsd www.springframework.org/schema/aop www.springframework.org/schema/aop/spring-aop-4.1.xsd www.springframework.org/schema/mvc www.springframework.org/schema/mvc/spring-mvc-4.1.xsd www.springframework.org/schema/util www.springframework.org/schema/util/spring-util-4.1.xsd www.springframework.org/schema/jdbc www.springframework.org/schema/jdbc "> <!-- 加载配置文件并配置数据库连接池 --> <util:properties id="db" location="classpath:db.properties"/> <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"> <property name="url" value="#{db.url}"/> <property name="password" value="#{db.password}"/> <property name="username" value="#{db.username}"/> <property name="driverClassName" value="#{db.driver}"/> </bean> <!-- 配置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:com/jektong/mapper/*.xml"/> <!-- 类型别名 --> <property name="typeAliasesPackage" value="com.jektong.entity"/> </bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.jektong.dao"/> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean> </beans>

test

package com.jektong.test; import java.util.List; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.jektong.dao.EmpMapper; import com.jektong.entity.Emp; /** * @author jektong * @Date 2020-10-15 16:31:58 */ public class TestOne { @Test public void t() throws Exception { ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml"); EmpMapper mapper = (EmpMapper) ac.getBean("empMapper"); List<Emp> selectAllEmps = mapper.selectAllEmps(); for (Emp emps : selectAllEmps) { System.out.println(emps.getName()); } } }

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