极简的MyBatis在Spring Boot下的配置

以我的一个项目为例。

0、项目结构：

1、POM中添加MyBatis的依赖：

<dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>1.3.1</version>
</dependency>

2、配置application.properties：

mybatis.mapper-locations=classpath:mapper/*.xml
#mybatis.type-aliases-package=com.julion.onlinestudy.domain

好吧，配置已经结束了。

接下来是一个小测试。

0、Bean文件：

package com.julion.onlinestudy.domain;

import com.fasterxml.jackson.annotation.JsonFormat;

import java.util.Date;

public class Student {
    private Integer id;

    private String username;

    private String password;

    private String name;

    private String gender;

    private String studentNo;

    private String grade;

    private String major;

    private Date createTime;

    private Date lastEditTime;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username == null ? null : username.trim();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender == null ? null : gender.trim();
    }

    public String getStudentNo() {
        return studentNo;
    }

    public void setStudentNo(String studentNo) {
        this.studentNo = studentNo == null ? null : studentNo.trim();
    }

    public String getGrade() {
        return grade;
    }

    public void setGrade(String grade) {
        this.grade = grade == null ? null : grade.trim();
    }

    public String getMajor() {
        return major;
    }

    public void setMajor(String major) {
        this.major = major == null ? null : major.trim();
    }

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

    @JsonFormat(pattern="yyyy-MM-dd HH:mm:ss")
    public Date getLastEditTime() {
        return lastEditTime;
    }

    public void setLastEditTime(Date lastEditTime) {
        this.lastEditTime = lastEditTime;
    }
}

1、Mapper XML文件：

<?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.julion.onlinestudy.mapper.StudentMapper" >
  <resultMap id="BaseResultMap" type="com.julion.onlinestudy.domain.Student" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="username" property="username" jdbcType="VARCHAR" />
    <result column="password" property="password" jdbcType="VARCHAR" />
    <result column="name" property="name" jdbcType="VARCHAR" />
    <result column="gender" property="gender" jdbcType="CHAR" />
    <result column="student_no" property="studentNo" jdbcType="VARCHAR" />
    <result column="grade" property="grade" jdbcType="VARCHAR" />
    <result column="major" property="major" jdbcType="VARCHAR" />
    <result column="create_time" property="createTime" jdbcType="TIMESTAMP" />
    <result column="last_edit_time" property="lastEditTime" jdbcType="TIMESTAMP" />
  </resultMap>

  <sql id="Base_Column_List" >
    id, username, password, name, gender, student_no, grade, major, create_time, last_edit_time
  </sql>

  <select id="getOneById" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    from student
    where id = #{id,jdbcType=INTEGER}
  </select>

</mapper>

 

2、Mapper文件：

package com.julion.onlinestudy.mapper;

import com.julion.onlinestudy.domain.Student;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;
import java.util.Map;

@Mapper
public interface StudentMapper {

    Student getOneById(Integer id);

}

3、Service文件：

package com.julion.onlinestudy.service;import com.julion.onlinestudy.domain.Student;import java.util.List;
import java.util.Map;public interface StudentService {Student getOneById(Integer id);}

4、Controller文件：

package com.julion.onlinestudy.controller;

import com.julion.onlinestudy.common.BaseResponse;
import com.julion.onlinestudy.domain.Student;
import com.julion.onlinestudy.enums.StatusCode;
import com.julion.onlinestudy.service.StudentService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;

@RestController
@RequestMapping("/student")
public class StudentController {

    private Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private StudentService service;

    @GetMapping(value = "/one/{id}", produces = "application/json;charset=utf-8")
    @ResponseBody
    public Student getOneStudent(@PathVariable Integer id) {
        logger.info("Controller--获取单个学生信息---Start");
        Student student = service.getOneById(id);
        logger.info("Controller--获取单个学生信息---End");
        return student;
    }

}

5、测试结果：