idea不需安装插件，自动生成mybatis-plus对应的实体类entity，带注解@TableName、@TableId、@TableField

1、修改Generate poJOs.groovy文件

2、idea中连接数据库

3、生成entity代码

4、查看生成的实体类

1、修改Generate poJOs.groovy文件

在项目下方点击Scratches and Consoles→ Extensions→ Database Tools and SQL箭头→schema→ Generate POJOs.groovy

替换为以下文件，直接可用

import com.intellij.database.model.DasTable
import com.intellij.database.model.ObjectKind
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtilimport java.io.*
import java.text.SimpleDateFormat//自定义包名
packageName = ""
typeMapping = [//类型映射(~/(?i)tinyint|smallint|mediumint/)      : "Integer",(~/(?i)int/)                             : "Long",(~/(?i)bool|bit/)                        : "Boolean",(~/(?i)float|double|decimal|real/)       : "BigDecimal",(~/(?i)datetime|timestamp|date|time/)    : "Date",(~/(?i)blob|binary|bfile|clob|raw|image/): "InputStream",(~/(?i)/)                                : "String"
]FILES.chooseDirectoryAndSave("Choose directory", "Choose where to store generated files") { dir ->SELECTION.filter { it instanceof DasTable && it.getKind() == ObjectKind.TABLE }.each { generate(it, dir) }
}def generate(table, dir) {def className = javaName(table.getName(), true)def fields = calcFields(table)packageName = getPackageName(dir)PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(new FileOutputStream(new File(dir, className + ".java")), "UTF-8"))printWriter.withPrintWriter {out -> generate(out, className, fields,table)}
}def getPackageName(dir) {return dir.toString().replaceAll("\\\\", ".").replaceAll("/", ".").replaceAll("^.*src(\\.main\\.java\\.)?", "") + ";"
}def generate(out, className, fields,table) {out.println "package $packageName"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 lombok.EqualsAndHashCode;")out.println "import lombok.experimental.Accessors;"out.println "import java.io.Serializable;"out.println "import lombok.Data;"Set types = new HashSet()fields.each() {types.add(it.type)}if (types.contains("Date")) {out.println "import java.util.Date;"}if (types.contains("InputStream")) {out.println "import java.io.InputStream;"}out.println ""out.println ""out.println "@EqualsAndHashCode(callSuper = false)"out.println "@Accessors(chain = true)"out.println "@TableName ( \""+table.getName() +"\" )"out.println "@Data"out.println "public class $className  implements Serializable {"out.println ""out.println genSerialID()fields.each() {out.println ""//添加字段注释if (isNotEmpty(it.commoent)) {out.println "\t/**"out.println "\t * ${it.commoent.toString()}"out.println "\t */"}if (it.annos != "") out.println "   ${it.annos.replace("[@TableId]", "")}"//显示变量out.println "\tprivate ${it.type} ${it.name};"}out.println ""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() }.valuedef comm =[colName : col.getName(),name :  javaName(col.getName(), false),type : typeStr,commoent: col.getComment(),annos: "\t@TableField(value = \""+col.getName()+"\")"]if("id".equals(col.getName()))comm.annos = comm.annos.toString().replace("@TableField(value = \"id\")","@TableId(value = \"id\", type = IdType.AUTO)")fields += [comm]}
}def javaClassName(str, capitalize) {def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str).collect { Case.LOWER.apply(it).capitalize() }.join("").replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")s = s[1..s.size() - 1]capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
}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]
}def isNotEmpty(content) {return content != null && content.toString().trim().length() > 0
}static String changeStyle(String str, boolean toCamel){if(!str || str.size() <= 1)return strif(toCamel){String r = str.toLowerCase().split('_').collect{cc -> Case.LOWER.apply(cc).capitalize()}.join('')return r[0].toLowerCase() + r[1..-1]}else{str = str[0].toLowerCase() + str[1..-1]return str.collect{cc -> ((char)cc).isUpperCase() ? '_' + cc.toLowerCase() : cc}.join('')}
}static String genSerialID()
{return "\tprivate static final long serialVersionUID =  "+Math.abs(new Random().nextLong())+"L;"
}