springboot集成mybatis-generator，自动生成mapper文件，实体，dao

mybatis的逆向工程给我们使用mybatis带来了很大的便利，现在我们就来配置一下一个简单的mybatis-generator的demo

1.第一步创建springboot项目，这里就不再一步步操作
2.通过maven导入jar包(此处用的是sqlite数据库)

 
        org.springframework.boot
        spring-boot-starter-parent
        2.0.4.RELEASE
         
    

    
        UTF-8
        UTF-8
        1.8
    

    
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            1.3.2
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
        
            org.xerial
            sqlite-jdbc
            3.20.0
        
        
        
            org.springframework.boot
            spring-boot-devtools
            true
        
        
        
            io.springfox
            springfox-swagger2
            2.7.0
        
        
            io.springfox
            springfox-swagger-ui
            2.7.0
        
          
        
            org.mybatis.generator
            mybatis-generator-core
            1.3.2
        
    


    
        
        
            
                org.mybatis.generator
                mybatis-generator-maven-plugin
                1.3.2
                
                    true
                    true
                    ${project.basedir}/src/main/resources/mybatis-generator/mybatisgenetorConfig.xml
                    
                
             
        
    

3.配置application.yml文件

server:
  port: 8010
spring:
  application:
    name: fmea
#配置数据源
  datasource:
    url: jdbc:sqlite:C:\\sqlite\\fmea.db
    driver-class-name: org.sqlite.JDBC
    username:
    password:
#配置mybatis
mybatis:
  mapper-locations: classpath:mappers/*.xml
  type-aliases-package: com.rb.fmea.entities

4.配置genertor的xml文件
mybatisgenetorConfig.xml

执行命令

mvn mybatis-generator:generate

执行那个后会生成dao,entites,mapper.xml文件
实体

package com.rb.fmea.entities;

import java.io.Serializable;

public class User implements Serializable {
    /**
     * This field was generated by MyBatis Generator.
     * This field corresponds to the database column user.id
     *
     * @mbggenerated
     */
    private Integer id;

    /**
     * This field was generated by MyBatis Generator.
     * This field corresponds to the database column user.name
     *
     * @mbggenerated
     */
    private String name;

    /**
     * This field was generated by MyBatis Generator.
     * This field corresponds to the database column user.password
     *
     * @mbggenerated
     */
    private String password;

    /**
     * This field was generated by MyBatis Generator.
     * This field corresponds to the database column user.des
     *
     * @mbggenerated
     */
    private String des;

    /**
     * This field was generated by MyBatis Generator.
     * This field corresponds to the database table user
     *
     * @mbggenerated
     */
    private static final long serialVersionUID = 1L;

    /**
     * This method was generated by MyBatis Generator.
     * This method returns the value of the database column user.id
     *
     * @return the value of user.id
     *
     * @mbggenerated
     */
    public Integer getId() {
        return id;
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method sets the value of the database column user.id
     *
     * @param id the value for user.id
     *
     * @mbggenerated
     */
    public void setId(Integer id) {
        this.id = id;
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method returns the value of the database column user.name
     *
     * @return the value of user.name
     *
     * @mbggenerated
     */
    public String getName() {
        return name;
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method sets the value of the database column user.name
     *
     * @param name the value for user.name
     *
     * @mbggenerated
     */
    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method returns the value of the database column user.password
     *
     * @return the value of user.password
     *
     * @mbggenerated
     */
    public String getPassword() {
        return password;
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method sets the value of the database column user.password
     *
     * @param password the value for user.password
     *
     * @mbggenerated
     */
    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method returns the value of the database column user.des
     *
     * @return the value of user.des
     *
     * @mbggenerated
     */
    public String getDes() {
        return des;
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method sets the value of the database column user.des
     *
     * @param des the value for user.des
     *
     * @mbggenerated
     */
    public void setDes(String des) {
        this.des = des == null ? null : des.trim();
    }

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbggenerated
     */
    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(getClass().getSimpleName());
        sb.append(" [");
        sb.append("Hash = ").append(hashCode());
        sb.append(", id=").append(id);
        sb.append(", name=").append(name);
        sb.append(", password=").append(password);
        sb.append(", des=").append(des);
        sb.append(", serialVersionUID=").append(serialVersionUID);
        sb.append("]");
        return sb.toString();
    }
}

dao

package com.rb.fmea.dao;

import com.rb.fmea.entities.User;
import java.util.List;

public interface UserMapper {
    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbggenerated
     */
    int deleteByPrimaryKey(Integer id);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbggenerated
     */
    int insert(User record);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbggenerated
     */
    User selectByPrimaryKey(Integer id);

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbggenerated
     */
    List selectAll();

    /**
     * This method was generated by MyBatis Generator.
     * This method corresponds to the database table user
     *
     * @mbggenerated
     */
    int updateByPrimaryKey(User record);
}

mapper文件

  
    
    
    
    
    
  
  
    
    delete from user
    where id = #{id,jdbcType=INTEGER}
  
  
    
    
      SELECT LAST_INSERT_ID()
    
    insert into user (`name`, `password`, des
      )
    values (#{name,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR}, #{des,jdbcType=VARCHAR}
      )
  
  
    
    update user
    set `name` = #{name,jdbcType=VARCHAR},
      `password` = #{password,jdbcType=VARCHAR},
      des = #{des,jdbcType=VARCHAR}
    where id = #{id,jdbcType=INTEGER}
  
  
    
    select id, `name`, `password`, des
    from user
    where id = #{id,jdbcType=INTEGER}
  
  
    
    select id, `name`, `password`, des
    from user
  

使用中出现问题：

执行mvn mybatis-generator:generate命令时报错(mysql一样也会报错)

Exception getting JDBC Driver: org.sqlite.JDBC

错误原因有两个
1.在mybatisgenetorConfig.xml文件中没有加载数据库驱动添加下面配置即可，加载你本地的驱动即可

2.在pox.xml文件中添加驱动(网上都用的这种，但是我使用了，不起效果)

                    org.mybatis.spring.boot
                    mybatis-spring-boot-starter
                    1.3.2
                
                    <!– SQLite3 驱动 –>
                    
                        org.xerial
                        sqlite-jdbc
                        3.20.0
                        runtime