Springbootmybatisplus Springboot整合mybatisplus详细篇+数据库+代码自动生成

直接上代码，目录在后面：

1 pom.xml

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>

   <groupId>com.gf</groupId>
   <artifactId>springboot-mybatis</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <packaging>jar</packaging>

   <name>springboot-mybatis</name>
   <description>Demo project for Spring Boot</description>

   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.2.12.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>

   <properties>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
         <scope>runtime</scope>
      </dependency>

      <dependency>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok</artifactId>
         <optional>true</optional>
      </dependency>

      <dependency>
         <groupId>com.baomidou</groupId>
         <artifactId>mybatis-plus-boot-starter</artifactId>
         <version>3.0.1</version>
      </dependency>

      <dependency>
         <groupId>org.apache.velocity</groupId>
         <artifactId>velocity</artifactId>
         <version>1.7</version>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>
   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>


</project>


2:application.xml  这里也可以是yml文件 不多说

#spring.datasource.url=jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=false&serverTimezone=UTC
spring.datasource.url=jdbc:mysql://192.168.110.208:3306/tb_web_ir?characterEncoding=utf8&useSSL=false&serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=root123
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
mybatis-plus.type-aliases-package=com.gf.mapper
mybatis-plus.mapper-locations=classpath*:mapper/*Mapper.xml
mybatis-plus.configuration.map-underscore-to-camel-case=true

idea 安装MybatisX 插件  ，连接数据库  

controller

package com.gf.controller;


import com.gf.entity.BTbEpc;
import com.gf.entity.Employee;
import com.gf.service.BTbEpcService;
import com.gf.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author jyc
 * @since 2018-11-25
 */
@RestController
@RequestMapping("/employee")
public class EmployeeController {


    @Autowired
    EmployeeService employeeService;

    @Autowired
    BTbEpcService bTbEpcService;

    @RequestMapping("btb")
    public List<BTbEpc> getBTbEpcs(){
        return bTbEpcService.list(null);

    }

    //localhost
    @RequestMapping(value = "/list", method = RequestMethod.GET)
    public List<Employee> getEmployees() {
        return employeeService.list( null );
    }
    //localhost
    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    public Employee getEmployeeById(@PathVariable("id") int id) {
        return employeeService.getById( id );
    }
    //localhost
    @RequestMapping(value = "/{id}", method = RequestMethod.PUT)
    public String updateEmployee(@PathVariable("id") int id, @RequestParam(value = "lastName", required = true) String lastName,
                                @RequestParam(value = "email", required = true) String email , @RequestParam(value = "gender", required = true) int gender , @RequestParam(value = "dId", required = true) int dId) {
        Employee employee = new Employee();
        employee.setId( id );
        employee.setLastName( "张" );
        employee.setEmail( "zhang@163.com" );
        employee.setGender( 1 );
        employee.setDId( 1 );

        boolean b = employeeService.updateById( employee );

        if (b) {
            return "update success";
        } else {
            return "update fail";
        }

    }

    @RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
    public String delete(@PathVariable(value = "id")int id) {
        boolean b = employeeService.removeById( id );

        if(b) {
            return "delete success";
        }else {
            return "delete fail";
        }

    }

    @RequestMapping(value = "", method = RequestMethod.POST)
    public String postEmployee(@RequestParam(value = "lastName", required = true) String lastName,
                               @RequestParam(value = "email", required = true) String email , @RequestParam(value = "gender", required = true) int gender , @RequestParam(value = "dId", required = true) int dId) {

        Employee employee = new Employee();
        employee.setLastName( "王" );
        employee.setEmail( "wang@163.com" );
        employee.setGender( 2 );
        employee.setDId( 2 );
        boolean b = employeeService.save( employee );

        if(b) {
            return "sava success";
        }else {
            return "sava fail";
        }

    }


}

entity

package com.gf.entity;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import java.io.Serializable;
import java.util.Date;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;

/**
 * 电力公司信息表（省级、市级、区级）<epc: electric power company>
 * @TableName b_tb_epc
 */
@TableName(value ="b_tb_epc")
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class BTbEpc implements Serializable {
    /**
     * 电力公司ID
     */
    @TableId(value = "epc_id")
    private Long epcId;

    /**
     * 电力公司父级ID（最高级别：0）
     */
    @TableField(value = "epc_parent_id")
    private Long epcParentId;

    /**
     * 电力公司编码
     */
    @TableField(value = "epc_code")
    private String epcCode;

    /**
     * 电力公司名称
     */
    @TableField(value = "epc_name")
    private String epcName;

    /**
     * 电力公司级别(1-2-3 省-市-区/县)
     */
    @TableField(value = "epc_level")
    private Integer epcLevel;

    /**
     * 变电检测记录是否存在(1:存在)
     */
    @TableField(value = "b_exist")
    private Boolean bExist;

    /**
     * 输电检测记录是否存在(1:存在)
     */
    @TableField(value = "s_exist")
    private Boolean sExist;

    /**
     * 配电检测记录是否存在(1:存在)
     */
    @TableField(value = "p_exist")
    private Boolean pExist;

    /**
     * 所属地市ID
     */
    @TableField(value = "region_id")
    private Long regionId;

    /**
     * epc访问路径
     */
    @TableField(value = "epc_route_path")
    private String epcRoutePath;

    /**
     * epc访问路径ID
     */
    @TableField(value = "epc_route_id")
    private String epcRouteId;

    /**
     * reg访问路径
     */
    @TableField(value = "reg_route_path")
    private String regRoutePath;

    /**
     * reg访问路径ID
     */
    @TableField(value = "reg_route_id")
    private String regRouteId;

    /**
     * 排序
     */
    @TableField(value = "sorted")
    private Integer sorted;

    /**
     * 创建时间
     */
    @TableField(value = "create_time")
    private Date createTime;

    /**
     * 创建人
     */
    @TableField(value = "creator")
    private Long creator;

    /**
     * 更新时间
     */
    @TableField(value = "update_time")
    private Date updateTime;

    /**
     * 更新人
     */
    @TableField(value = "updater")
    private Long updater;

    /**
     * 软删除（1：已删除）
     */
    @TableField(value = "deleted")
    private Boolean deleted;

    /**
     * 乐观锁版本号
     */
    @TableField(value = "version")
    private Integer version;

    /**
     * 备注
     */
    @TableField(value = "remark")
    private String remark;

    @TableField(exist = false)
    private static final long serialVersionUID = 1L;



    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(getClass().getSimpleName());
        sb.append(" [");
        sb.append("Hash = ").append(hashCode());
        sb.append(", epcId=").append(epcId);
        sb.append(", epcParentId=").append(epcParentId);
        sb.append(", epcCode=").append(epcCode);
        sb.append(", epcName=").append(epcName);
        sb.append(", epcLevel=").append(epcLevel);
        sb.append(", bExist=").append(bExist);
        sb.append(", sExist=").append(sExist);
        sb.append(", pExist=").append(pExist);
        sb.append(", regionId=").append(regionId);
        sb.append(", epcRoutePath=").append(epcRoutePath);
        sb.append(", epcRouteId=").append(epcRouteId);
        sb.append(", regRoutePath=").append(regRoutePath);
        sb.append(", regRouteId=").append(regRouteId);
        sb.append(", sorted=").append(sorted);
        sb.append(", createTime=").append(createTime);
        sb.append(", creator=").append(creator);
        sb.append(", updateTime=").append(updateTime);
        sb.append(", updater=").append(updater);
        sb.append(", deleted=").append(deleted);
        sb.append(", version=").append(version);
        sb.append(", remark=").append(remark);
        sb.append(", serialVersionUID=").append(serialVersionUID);
        sb.append("]");
        return sb.toString();
}
}

mapper

package com.gf.mapper;

import com.gf.entity.BTbEpc;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.apache.ibatis.annotations.Mapper;

/**
 * @Entity com.gf.entity.BTbEpc
 */
//@Mapper
public interface BTbEpcMapper extends BaseMapper<BTbEpc> {

}

service

package com.gf.service;

import com.gf.entity.BTbEpc;
import com.baomidou.mybatisplus.extension.service.IService;

/**
 *
 */
public interface BTbEpcService extends IService<BTbEpc> {

}

impl

package com.gf.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.gf.entity.BTbEpc;
import com.gf.service.BTbEpcService;
import com.gf.mapper.BTbEpcMapper;
import org.springframework.stereotype.Service;

/**
 *
 */
@Service
public class BTbEpcServiceImpl extends ServiceImpl<BTbEpcMapper, BTbEpc> implements BTbEpcService{

}

resource/mapper

<?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.gf.mapper.BTbEpcMapper">

    <resultMap id="BaseResultMap" type="com.gf.entity.BTbEpc">
            <id property="epcId" column="epc_id" jdbcType="BIGINT"/>
            <result property="epcParentId" column="epc_parent_id" jdbcType="BIGINT"/>
            <result property="epcCode" column="epc_code" jdbcType="VARCHAR"/>
            <result property="epcName" column="epc_name" jdbcType="VARCHAR"/>
            <result property="epcLevel" column="epc_level" jdbcType="INTEGER"/>
            <result property="BExist" column="b_exist" jdbcType="BOOLEAN"/>
            <result property="SExist" column="s_exist" jdbcType="BOOLEAN"/>
            <result property="PExist" column="p_exist" jdbcType="BOOLEAN"/>
            <result property="regionId" column="region_id" jdbcType="BIGINT"/>
            <result property="epcRoutePath" column="epc_route_path" jdbcType="VARCHAR"/>
            <result property="epcRouteId" column="epc_route_id" jdbcType="VARCHAR"/>
            <result property="regRoutePath" column="reg_route_path" jdbcType="VARCHAR"/>
            <result property="regRouteId" column="reg_route_id" jdbcType="VARCHAR"/>
            <result property="sorted" column="sorted" jdbcType="INTEGER"/>
            <result property="createTime" column="create_time" jdbcType="TIMESTAMP"/>
            <result property="creator" column="creator" jdbcType="BIGINT"/>
            <result property="updateTime" column="update_time" jdbcType="TIMESTAMP"/>
            <result property="updater" column="updater" jdbcType="BIGINT"/>
            <result property="deleted" column="deleted" jdbcType="BOOLEAN"/>
            <result property="version" column="version" jdbcType="INTEGER"/>
            <result property="remark" column="remark" jdbcType="VARCHAR"/>
    </resultMap>

    <sql id="Base_Column_List">
        epc_id,epc_parent_id,epc_code,
        epc_name,epc_level,b_exist,
        s_exist,p_exist,region_id,
        epc_route_path,epc_route_id,reg_route_path,
        reg_route_id,sorted,create_time,
        creator,update_time,updater,
        deleted,version,remark
    </sql>
</mapper>

 http://localhost:8080/xxx/xxx