在 MyBatis 中,你可以通過(guò)編寫(xiě)單元測(cè)試來(lái)測(cè)試重載方法。以下是一個(gè)簡(jiǎn)單的示例,展示了如何在 MyBatis 中測(cè)試重載方法:
UserMapper.xml
的映射文件,其中包含兩個(gè)重載的 SQL 查詢(xún)方法:<?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.mapper.UserMapper">
<select id="findUserById" parameterType="int" resultType="User">
SELECT * FROM users WHERE id = #{id}
</select>
<select id="findUserByName" parameterType="String" resultType="User">
SELECT * FROM users WHERE name = #{name}
</select>
</mapper>
UserMapper.java
的接口,用于定義這兩個(gè)重載方法:package com.example.mapper;
import com.example.model.User;
public interface UserMapper {
User findUserById(int id);
User findUserByName(String name);
}
UserMapperTest.java
的測(cè)試類(lèi),使用 JUnit 編寫(xiě)單元測(cè)試:package com.example.mapper;
import com.example.model.User;
import org.junit.jupiter.api.Test;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import java.io.Reader;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class UserMapperTest {
@Test
public void testFindUserById() throws Exception {
// 讀取 MyBatis 配置文件
Reader reader = Resources.getResourceAsReader("mybatis-config.xml");
// 構(gòu)建 SqlSessionFactory
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
// 獲取 SqlSession
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
// 獲取 UserMapper 接口的代理對(duì)象
UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
// 調(diào)用重載方法 findUserById
User user = userMapper.findUserById(1);
// 斷言結(jié)果
assertEquals("John Doe", user.getName());
} finally {
// 關(guān)閉 SqlSession
sqlSession.close();
}
}
@Test
public void testFindUserByName() throws Exception {
// 讀取 MyBatis 配置文件
Reader reader = Resources.getResourceAsReader("mybatis-config.xml");
// 構(gòu)建 SqlSessionFactory
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
// 獲取 SqlSession
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
// 獲取 UserMapper 接口的代理對(duì)象
UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
// 調(diào)用重載方法 findUserByName
User user = userMapper.findUserByName("John Doe");
// 斷言結(jié)果
assertEquals(1, user.getId());
} finally {
// 關(guān)閉 SqlSession
sqlSession.close();
}
}
}
pom.xml
文件中添加以下依賴(lài):<dependencies>
<!-- ... -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.7.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.7.0</version>
<scope>test</scope>
</dependency>
</dependencies>
現(xiàn)在,你可以運(yùn)行 UserMapperTest
類(lèi)中的測(cè)試方法,驗(yàn)證 MyBatis 是否正確地調(diào)用了重載方法。