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MyBatis ORM(Object-Relational Mapping)是一個(gè)將對(duì)象映射到關(guān)系數(shù)據(jù)庫(kù)的技術(shù)。集成測(cè)試是軟件開(kāi)發(fā)過(guò)程中的一個(gè)重要環(huán)節(jié),用于驗(yàn)證各個(gè)組件之間的交互是否正常。以下是一個(gè)關(guān)于MyBatis ORM集成測(cè)試的實(shí)踐指南:
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.7</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.6</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
</dependencies>
設(shè)計(jì)數(shù)據(jù)庫(kù)和實(shí)體類(lèi) 設(shè)計(jì)一個(gè)簡(jiǎn)單的數(shù)據(jù)庫(kù),例如一個(gè)用戶(hù)表(user),包含id、name和email字段。然后創(chuàng)建一個(gè)對(duì)應(yīng)的實(shí)體類(lèi)User,包含相應(yīng)的屬性和getter/setter方法。
創(chuàng)建MyBatis映射文件 創(chuàng)建一個(gè)名為UserMapper.xml的MyBatis映射文件,定義SQL語(yǔ)句和結(jié)果映射。例如:
<?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.example.dao.UserMapper">
<select id="selectUserById" resultType="com.example.entity.User">
SELECT * FROM user WHERE id = #{id}
</select>
</mapper>
package com.example.dao;
import com.example.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
@Repository
public class UserMapperImpl implements UserMapper {
@Autowired
private SqlSessionTemplate sqlSessionTemplate;
@Override
@Transactional
public User selectUserById(int id) {
return sqlSessionTemplate.selectOne("com.example.dao.UserMapper.selectUserById", id);
}
}
package com.example.dao;
import com.example.entity.User;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import static org.junit.jupiter.api.Assertions.assertEquals;
@SpringBootTest
public class UserMapperImplTest {
@Autowired
private UserMapper userMapper;
@Test
public void testSelectUserById() {
User user = userMapper.selectUserById(1);
assertEquals("John Doe", user.getName());
assertEquals("john.doe@example.com", user.getEmail());
}
}
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