SpringBoot测试mapper接口

一、创建例子

1.建立数据库

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for student
-- ----------------------------
DROP TABLE IF EXISTS `student`;
CREATE TABLE `student`  (
  `student_id` int UNSIGNED NOT NULL AUTO_INCREMENT COMMENT ‘编号‘,
  `name` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT ‘姓名‘,
  `phone` varchar(20) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT ‘电话‘,
  `email` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL COMMENT ‘邮箱‘,
  `sex` tinyint NULL DEFAULT NULL COMMENT ‘性别‘,
  `locked` tinyint NULL DEFAULT NULL COMMENT ‘状态(0:正常,1:锁定)‘,
  `gmt_created` datetime NULL DEFAULT CURRENT_TIMESTAMP COMMENT ‘存入数据库的时间‘,
  `gmt_modified` datetime NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT ‘修改的时间‘,
  PRIMARY KEY (`student_id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 7 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci COMMENT = ‘学生表‘ ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of student
-- ----------------------------

SET FOREIGN_KEY_CHECKS = 1;

2.创建SpringBoot项目

• 配置数据源

# DataSource Config
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/student?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=Asia/Shanghai
    username: xxx
    password: xxx
mybatis-plus:
  mapper-locations: classpath*:/mapper/**Mapper.xml
server:
  port: 8081

• 添加mapper接口

  List<Student> selectByStudentSelective(Student student);
  

• 对应的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.mrdouym.demo2.mapper.StudentMapper">
  
      <sql id="List">    student_id,name,phone,email,sex,locked,gmt_created,gmt_modified
      </sql>
  
      <select id="selectByStudentSelective" resultType="com.mrdouym.demo2.entity.Student">
          select
          <include refid="List" />
          from student
          where 1=1
          <if test="name != null and name !=‘‘">
              and name like concat(‘%‘, #{name}, ‘%‘)
          </if>
          <if test="sex != null">
              and sex=#{sex}
          </if>
      </select>
  </mapper>
  
  

  测试mapper接口

  import com.mrdouym.demo2.entity.Student;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.test.context.ActiveProfiles;
  import org.springframework.test.context.ContextConfiguration;
  import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
  import org.springframework.test.context.junit4.SpringRunner;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * @program: demo2
   * @description: SpringBoot测试mapper接口
   * @create: 2021-07-12 15:38
   * @author: MrdouYM
   **/
  @SpringBootTest
  @RunWith(SpringRunner.class)
  //@RunWith(SpringJUnit4ClassRunner.class)
  @ActiveProfiles("test")
  public class StudentMapperTest {
  
      @Autowired
      private StudentMapper studentMapper;
      @Test
      public void test(){
          List<Student> list = new ArrayList<>();
          Student student=new Student();
          //student.setName("xxx");
          student.setSex(1);
          list=studentMapper.selectByStudentSelective(student);
          System.out.println("=================================================================");
          for (Student student1 : list) {
              System.out.println(student1);
          }
          System.out.println("=================================================================");
      }
  }
  

@RunWith(SpringRunner.class)继承了@RunWith(SpringJUnit4ClassRunner.class)，两者都可。

测试成功！

原文：https://www.cnblogs.com/blogBydym/p/15005727.html