学习mybatisplus时用@SpringBootTest注解写测试类，可以得到结果，但是运行主程序时报错
网络查询结果为版本不兼容，更换版本依然如此，
将@SpringBootTest注解注释掉却运行成功。
不太理解，求各位解惑
pom文件如下
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.li</groupId>
<artifactId>mpdemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>mpdemo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<spring-boot.version>2.3.7.RELEASE</spring-boot.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-test</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.2</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.7.2</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.3.7.RELEASE</version>
<configuration>
<mainClass>com.li.mpdemo.MpdemoApplication</mainClass>
</configuration>
<executions>
<execution>
<id>repackage</id>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
原测试类，可以使用
package com.li.mpdemo;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.li.mpdemo.mapper.EmployeeMapper;
import com.li.mpdemo.pojo.Employee;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Created with IntelliJ IDEA.
*
* @Author: llw
* @Date: 2021/08/24/14:21
* @Description:
*/
@SpringBootTest
public class MpdemoApplicationTest {
@Autowired
private EmployeeMapper employeeMapper;
@Test
void getEmployee(){
List<Employee> employees = employeeMapper.selectList(null);
employees.forEach(System.out::println);
}
@Test
void testInsert() {
int result = employeeMapper.insert(new Employee(null, "zhangsan", "zhangsan@qq.com", 0, 25));
System.out.println("result:" + result);
}
@Test
void testUpdateById() {
// 先查询
Employee employee = employeeMapper.selectById(1);
employee.setLastName("Jennie");
// 再修改
int result = employeeMapper.updateById(employee);
System.out.println(result);
}
@Test
void testSelectById() {
Employee employee = employeeMapper.selectById(1);
System.out.println(employee);
}
@Test
void testSelectByMap() {
Map<String, Object> map = new HashMap<>();
map.put("gender",0);
map.put("age",25);
List<Employee> employees = employeeMapper.selectByMap(map);
employees.forEach(System.out::println);
}
@Test
void testSelectBatchIds() {
List<Employee> employees = employeeMapper.selectBatchIds(Arrays.asList(1, 2, 3));
employees.forEach(System.out::println);
}
@Test
void testDeleteById() {
int result = employeeMapper.deleteById(1);
System.out.println(result);
}
@Test
void testDeleteByMap() {
Map<String, Object> map = new HashMap<>();
map.put("gender", 0);
map.put("age", 25);
int result = employeeMapper.deleteByMap(map);
System.out.println(result);
}
@Test
void testDeleteBatchIds() {
int result = employeeMapper.deleteBatchIds(Arrays.asList(4, 5, 6));
System.out.println(result);
}
@Test
void testwrapper1(){
QueryWrapper<Employee> queryWrapper=new QueryWrapper<>();
queryWrapper
.like("last_name","B")
.eq("gender","1")
.gt("age",24);
List<Employee> employees=employeeMapper.selectList(queryWrapper);
employees.forEach(System.out::println);
}
@Test
void testSelectList3() {
QueryWrapper<Employee> queryWrapper = new QueryWrapper<>();
queryWrapper.eq("gender", 1);
Integer count = employeeMapper.selectCount(queryWrapper);
System.out.println(count);
}
@Test
void testUpdate() {
UpdateWrapper<Employee> updateWrapper = new UpdateWrapper<>();
updateWrapper
.eq("gender", 1)
.gt("age", 25)
;
Employee employee = new Employee();
employee.setGender(0);
employeeMapper.update(employee, updateWrapper);
}
@Test
void testDelete() {
QueryWrapper<Employee> queryWrapper = new QueryWrapper<>();
queryWrapper.like("last_name", "Tom");
int result = employeeMapper.delete(queryWrapper);
System.out.println(result);
}
}
运行主程序时报错
将测试类中的@Spring BootTest注解注释之后可以运行成功
不明白
项目结构如下
