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修改了下idea自带的代码生成脚本，增加了脚本代码的注释，生成了controller，service，impl，mapper，里面都是空的，具体可以根据自己的代码习惯增加
代码生成脚本的使用可以看下使用 idea 生成实体类代码

修改后的脚本代码

import com.intellij.database.model.DasTable
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil
import com.intellij.database.model.ObjectKind
import java.io.*
import java.text.SimpleDateFormat/** Available context bindings:*   SELECTION   Iterable<DasObject>*   PROJECT     project*   FILES       files helper*/
/*** 对应类型转换配置* 数据库类型：java类型*/
typeMapping = [(~/(?i)tinyint|smallint|mediumint/)  : "Integer",(~/(?i)int/)                         : "Long",(~/(?i)bool|bit/)                    : "Boolean",(~/(?i)float|double|decimal|real/)   : "Double",(~/(?i)datetime|timestamp|date|time/): "Date",(~/(?i)/)                            : "String"
]/*** 程序入口*/
FILES.chooseDirectoryAndSave("选择文件夹", "选择controller、domain,service,mapper的上级目录，生成的代码将会保存到对应文件夹。") {dir -> SELECTION.filter { it instanceof DasTable }.each { generate(it, dir) }
}/*** 代码生成* @param table 表的对象* @param dir 选择的文件夹路径*/
def generate(table, dir) {String domainDir = "${dir}/domain"String domainClassName = javaName(table.getName(), true)String domainPackageName = getPackageName(domainDir)// 生成实体类// 这个utf8是解决乱码new File(domainDir, "${domainClassName}.java").withPrintWriter("UTF-8") {out -> generateDomain(out, domainClassName, table, domainPackageName)}// 生成mapperString mapperDir = "${dir}/mapper"String mapperClassName = "${domainClassName}Mapper"String mapperPackageName = getPackageName(mapperDir)new File(mapperDir, "${mapperClassName}.java").withPrintWriter("UTF-8") {out ->generateMapper(out, mapperClassName, mapperPackageName,domainClassName, domainPackageName)}// 生成serviceString serviceDir = "${dir}/service"String serviceClassName = "${domainClassName}Service"String servicePackageName = getPackageName(serviceDir)new File(serviceDir, "${serviceClassName}.java").withPrintWriter("UTF-8") { out -> generateService(out, serviceClassName, servicePackageName) }// 生成serviceImplString servicImplDir = "${serviceDir}/impl"String serviceImplClassName = "${serviceClassName}Impl"String serviceImplPackageName = getPackageName(servicImplDir)new File(servicImplDir, "${serviceImplClassName}.java").withPrintWriter("UTF-8") {out ->generateServiceImpl(out, serviceImplClassName, serviceImplPackageName,serviceClassName, servicePackageName, mapperPackageName,mapperClassName, domainClassName, domainPackageName)}// 生成ControllerString controllerDir = "${dir}/controller"String controllerClassName = "${domainClassName}Controller"String controllerPackageName = getPackageName(controllerDir)new File(controllerDir, "${controllerClassName}.java").withPrintWriter("UTF-8") {out ->generateController(out, controllerClassName, controllerPackageName,serviceImplClassName, serviceImplPackageName, serviceClassName,servicePackageName, domainClassName, domainPackageName)}}/*** 文件夹路径转换为包名* @param dir 文件夹路径* @return 包名*/
static String getPackageName(dir) {return dir.toString().replaceAll("\\\\", ".").replaceAll("/", ".").replaceAll("^.*src(\\.main\\.java\\.)?", "")
}
/*** 生成实体类* @param out 输出流* @param className 类名* @param table 数据库表对象* @param dir 文件夹路径*/
def generateDomain(out, className, table, domainPackageName) {def fields = calcFields(table)String tableName = table.getName();def comment = table.getComment();out.println "package $domainPackageName;"out.println ""out.println "import com.baomidou.mybatisplus.annotation.IdType;"out.println "import com.baomidou.mybatisplus.annotation.TableField;"out.println "import com.baomidou.mybatisplus.annotation.TableId;"out.println "import com.baomidou.mybatisplus.annotation.TableName;"out.println "import java.util.Date;"out.println "import com.fasterxml.jackson.annotation.JsonFormat;"out.println "import java.io.Serializable;"out.println "import lombok.Data;"out.println "import lombok.AllArgsConstructor;"out.println "import lombok.Builder;"out.println "import lombok.NoArgsConstructor;"out.println ""out.println "/**"out.println "* $comment"out.println "* @author zjx"out.println "*/"out.println "@Data"out.println "@TableName(\"$tableName\")"out.println "@NoArgsConstructor"out.println "@AllArgsConstructor"out.println "@Builder"out.println "public class $className implements Serializable{"out.println ""out.println "\t@TableField(exist = false)"out.println genSerialID()out.println ""fields.each() {// 输出注释if (isNotEmpty(it.commoent)) {out.println "\t/**"out.println "\t * ${it.commoent}"out.println "\t */"}if (it.type == "Date") {out.println "\t@JsonFormat(pattern = \"yyyy-MM-dd HH:mm:ss\")"}if (it.annos != "") out.println "  ${it.annos}"out.println "\tprivate ${it.type} ${it.name};"}out.println ""out.println "}"
}/*** 生成mapper* @param out 输出流* @param mapperClassName mapper类名* @param mapperPackageName mapper包名* @param domainClassName 实体类类名* @param domainPackageName 实体类包名*/
void generateMapper(out, mapperClassName, mapperPackageName, domainClassName,domainPackageName) {out.println "package $mapperPackageName;"out.println ""out.println "import $domainPackageName.$domainClassName;"out.println "import com.baomidou.mybatisplus.core.mapper.BaseMapper;"out.println "import org.apache.ibatis.annotations.Mapper;"out.println ""out.println "/**"out.println "* @author zjx"out.println "*/"out.println "@Mapper"out.println "public interface $mapperClassName extends BaseMapper<$domainClassName>{"out.println ""out.println "}"
}
/*** 生成service* @param out 输出流* @param serviceClassName service类名* @param servicePackageName service包名*/
void generateService(out, serviceClassName, servicePackageName) {out.println "package $servicePackageName;"out.println ""out.println "/**"out.println "* @author zjx"out.println "*/"out.println "public interface $serviceClassName {"out.println ""out.println "}"
}
/*** 生成ServiceImpl* @param out 输出流* @param serviceImplClassName serviceImpl类名* @param serviceImplPackageName serviceImpl包名* @param serviceClassName service类名* @param service包名* @param mapperPackageName mapper类名* @param mapperClassName mapper包名* @param domainClassName 实体类类名* @param domainPackageName 实体类包名*/
void generateServiceImpl(out, serviceImplClassName, serviceImplPackageName,serviceClassName, servicePackageName, mapperPackageName,mapperClassName, domainClassName, domainPackageName) {String lowerMapperClassName =mapperClassName.length() == 1 ? mapperClassName : mapperClassName[0].toLowerCase() + mapperClassName[1..-1];out.println "package $serviceImplPackageName;"out.println ""out.println "import $servicePackageName.$serviceClassName;"out.println "import $mapperPackageName.$mapperClassName;"out.println "import org.springframework.stereotype.Service;"out.println "import javax.annotation.Resource;"out.println ""out.println "/**"out.println "* @author zjx"out.println "*/"out.println "@Service"out.println "public class $serviceImplClassName implements $serviceClassName {"out.println "\t@Resource"out.println "\tprivate $mapperClassName $lowerMapperClassName;"out.println ""out.println "}"
}/**** 生成ServiceImpl* @param out 输出流* @param serviceImplClassName serviceImpl类名* @param serviceImplPackageName serviceImpl包名* @param serviceClassName service类名* @param service包名* @param controllerClassName controller类名* @param controllerPackageName controller包名* @param domainClassName 实体类类名* @param domainPackageName 实体类包名*/
void generateController(out, controllerClassName, controllerPackageName,serviceImplClassName, serviceImplPackageName, serviceClassName,servicePackageName, domainClassName, domainPackageName){String lowerServiceClassName =serviceClassName.length() == 1 ? serviceClassName : serviceClassName[0].toLowerCase() + serviceClassName[1..-1];String lowerDomainClassName =domainClassName.length() == 1 ? domainClassName : domainClassName[0].toLowerCase() + domainClassName[1..-1];out.println "package $serviceImplPackageName;"out.println ""out.println "import $servicePackageName.$serviceClassName;"out.println "import javax.annotation.Resource;"out.println "import org.springframework.web.bind.annotation.RestController;"out.println "import org.springframework.web.bind.annotation.RequestMapping;"out.println ""out.println "/**"out.println "* @author zjx"out.println "*/"out.println "@RestController"out.println "@RequestMapping(\"/${lowerDomainClassName}\")"out.println "public class $controllerClassName {"out.println "\t@Resource"out.println "\tprivate $serviceClassName $lowerServiceClassName;"out.println ""out.println "}"
}/*** 读取处理表的数据* @param table 表的对象* @return 表的数据*/
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() }.valuedef comm = [colName : col.getName(),name    : javaName(col.getName(), false),type    : typeStr,commoent: col.getComment(),annos   : ""]if ("主键".equals(col.getComment().toString()))comm.annos += "\t@TableId(type = IdType.AUTO)"fields += [comm]}
}/*** 表名转换为类名* @param tableName 表名* @param capitalize 是否将首字母转大写* @return 转换后的类名*/
String javaName(tableName, capitalize) {String s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(tableName).collect { Case.LOWER.apply(it).capitalize() }.join("").replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")capitalize || s.length() == 1 ? s : Case.LOWER.apply(s[0]) + s[1..-1]
}static def isNotEmpty(content) {return content != null && content.toString().trim().length() > 0
}/*** 生成serialVersionUID*/
static String genSerialID() {return "\tprivate static final long serialVersionUID =  " + Math.abs(new Random().nextLong()) + "L;"
}