maven專案：

配置檔案

pom.xml

<?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>com.zit</groupId>
    <artifactId>spring007</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.1.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.1.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.0.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.11</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.6</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.20</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>
    <build>
        <finalName>${project.artifactId}</finalName>
        <testSourceDirectory>src/test/java</testSourceDirectory>
        <sourceDirectory>src/main/java</sourceDirectory>
        <!--處理無法載入資源配置檔案-->
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.properties</include>
                </includes>
            </resource>
        </resources>

    </build>
</project>
 

beans.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"
       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">


    <context:annotation-config/>

    <context:component-scan base-package="com.zit.entity,com.zit.mapper"/>

    <!--載入資料庫資訊-->
    <context:property-placeholder location="db.properties"/>

    <!--建立資料來源spring-->
    <bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${db.driver}"/>
        <property name="url" value="${db.url}"/>
        <property name="username" value="${db.username}"/>
        <property name="password" value="${db.password}"/>
    </bean>
    <!--SqlSessfionFactory-->
    <bean id="sf" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="ds"/>
        <property name="typeAliasesPackage" value="com.zit.entity"/>
    </bean>
    <!--mapper介面的掃描-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.zit.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sf"/>
    </bean>


</beans>
 

db.properties:

db.driver=com.mysql.cj.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/dt_game?userUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=PRC
db.username=root
db.password=

com.zit.mapper.BookMapper.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.zit.mapper.BookMapper">

</mapper>
 

com.zit.entity.Book.java

package com.zit.entity;

import lombok.Data;
import org.springframework.stereotype.Component;

import java.math.BigDecimal;
import java.util.Date;

@Data
@Component
public class Book {
    private int id;
    private String name;
    private BigDecimal price;
    private Date btime;

}

com.zit.mapper.BookMapper.interface

package com.zit.mapper;


import com.zit.entity.Book;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface BookMapper {
    @Select("select * from book")
    public List<Book> query();
}

測試類：Demo.java

package com;

import com.zit.mapper.BookMapper;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:beans.xml")
public class Demo {
    @Autowired
    protected BookMapper bdao;

    @Test
    public void tt() {
        System.out.println(bdao.query());
    }
}