1、idea连接mysql生成对象实体
1.1 在mysql中创建表
1.2 使用idea连接数据库
如果下载有问题，在这边可以配置驱动，根据自己的mysql版本来配置：
1.3修改配置文件
idea版本不一样，步骤会有所不同
配置根据自己情况修改：
import com.intellij.database.model.DasTable
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil
import java.text.SimpleDateFormat
/* 关键点请看 TODO */
/* 关键点请看 TODO */
/* 关键点请看 TODO */
/* TODO 项目包名 */
packageName = "com.zsh.test.swagger3test.model.entity;"
typeMapping = [
(~/(?i)int/) : "long",
(~/(?i)float|double|decimal|real/): "double",
// (~/(?i)datetime|timestamp/) : "java.sql.Timestamp",
(~/(?i)date|datetime|timestamp/) : "java.sql.Date",
(~/(?i)time/) : "java.sql.Time",
(~/(?i)/) : "String"
]
FILES.chooseDirectoryAndSave("Choose directory", "Choose where to store generated files") { dir ->
SELECTION.filter { it instanceof DasTable }.each { generate(it, dir) }
}
def generate(table, dir) {
def className = javaName(table.getName(), true)
def fields = calcFields(table)
/* TODO 需要设置编码，否则，导出的脚本会有乱码*/
new File(dir, className + ".java").withPrintWriter("utf-8") { out -> generate(out, className, fields,table) }
}
def generate(out, className, fields,table) {
out.println "package $packageName"
/* TODO 手动添加项目需要的包*/
out.println "import java.util.Date;"
//lombok
out.println "import lombok.Data;"
out.println "import lombok.NoArgsConstructor;"
out.println "import lombok.AllArgsConstructor;"
out.println "import lombok.experimental.Accessors;"
out.println "import lombok.EqualsAndHashCode;"
//mybatisplus
out.println "import com.baomidou.mybatisplus.annotation.TableName;"
out.println "import com.baomidou.mybatisplus.annotation.TableField;"
//swagger
out.println "import io.swagger.v3.oas.annotations.media.Schema;"
// out.println "import io.swagger.annotations.ApiModel;"
// out.println "import javax.persistence.Column;"
// out.println "import javax.persistence.Entity;"
// out.println "import javax.persistence.Table;"
out.println ""
/* TODO 添加注释*/
out.println "/**\n" +
" * @Description \n" +
" * @Author ZhaoShuhao\n" +
" * @Date: "+new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) +"\n" +
" */"
out.println ""
/* TODO
1.添加@Data 注解,使用lombok,所以不生成 get/set 方法
2.需要生成文档,所以使用swagger注解
*/
out.println "@Data"
out.println "@NoArgsConstructor"
out.println "@AllArgsConstructor"
out.println "@EqualsAndHashCode(callSuper = false)"
out.println "@Accessors(chain = true)"
/* TODO 添加表名和表说明*/
// out.println "@ApiModel(value=\" " + table.getName()+" \", description=\" "+table.getComment()+" \")"
out.println "@Schema(name=\" "+table.getName()+" \", description=\" "+table.getComment()+" \")"
out.println "@TableName(value = \""+table.getName()+"\",autoResultMap = true)"
out.println "public class $className {"
out.println ""
fields.each() {
/* TODO 添加字段属性和注解*/
// out.println " @Excel(name = \""+it.commoent+"\")"
// out.println " @ApiModelProperty(value = \""+it.commoent+"\")"
out.println " @TableField(value = \""+it.name+"\")"
out.println " @Schema(name=\""+it.name+"\",description=\""+it.commoent+"\")"
out.println " private ${it.type} ${it.name};"
out.println " \n"
}
out.println "}"
}
def calcFields(table) {
DasUtil.getColumns(table).reduce([]) { fields, col ->
def spec = Case.LOWER.apply(col.getDataType().getSpecification())
def typeStr = typeMapping.find { p, t -> p.matcher(spec).find() }.value
fields += [[
/* TODO name:字段名 type:字段类型 commoent:字段说明*/
name : javaName(col.getName(), false),
type : typeStr,
commoent: col.getComment()]]
}
}
def javaName(str, capitalize) {
def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
.collect { Case.LOWER.apply(it).capitalize() }
.join("")
.replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
}1.4开始生成
package com.zsh.test.swagger3test.model.entity;
import java.util.Date;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.AllArgsConstructor;
import lombok.experimental.Accessors;
import lombok.EqualsAndHashCode;
import com.baomidou.mybatisplus.annotation.TableName;
import com.baomidou.mybatisplus.annotation.TableField;
import io.swagger.v3.oas.annotations.media.Schema;
/**
* @Description
* @Author ZhaoShuhao
* @Date: 2024-07-21 12:45:39
*/
@Data
@NoArgsConstructor
@AllArgsConstructor
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
@Schema(name=" user ", description=" null ")
@TableName(value = "user",autoResultMap = true)
public class User {
@TableField(value = "id")
@Schema(name="id",description=" 主键 ")
private long id;
@TableField(value = "name")
@Schema(name="name",description=" 姓名 ")
private String name;
@TableField(value = "age")
@Schema(name="age",description=" 年龄 ")
private long age;
@TableField(value = "phone")
@Schema(name="phone",description=" 电话 ")
private String phone;
@TableField(value = "account")
@Schema(name="account",description=" 账号 ")
private String account;
@TableField(value = "pwd")
@Schema(name="pwd",description=" 密码 ")
private String pwd;
@TableField(value = "creat_time")
@Schema(name="creatTime",description=" 创建时间 ")
private java.sql.Date creatTime;
@TableField(value = "update_time")
@Schema(name="updateTime",description=" 更新时间 ")
private java.sql.Date updateTime;
}
2、Mybatis-X插件自动生成代码
2.1安装Mybatis-X插件
File–>Settings–>Plugins–>Marketplace，搜索MyBatisX–>install
2.2 生成代码
（1）侧边栏打开数据库，选择要生成代码的表格，在表名上右击，点击MybatisX-Generator
（2）设置类名生成规则及生成代码的路径
路径的生成按照物理路径是： module path --》 base path --》base package
（这里注意如果想实体类带Entity后缀，在extra class suffix一栏填上Entity即可）
（3）生成代码
custom-model-swagger：生成实体文件，属性上会自动增加swagger的相关注解，
default-all：生成实体文件、xml文件和dao层接口文件，
默认会生成常用的增删改查到的方法
mybatis-plus3：生成实体文件、xml文件、dao层接口文件、
service层接口文件和service层接口实现文件
2.3 配置文件（可自定义修改）
