IDEA Groovy 脚本一键生成实体类＜mybatisplus＞

配置数据库（mysql）

一键生成（右键点击table）

配置自己的groovy脚本

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
 *   PROJECT     project
 *   FILES       files helper
 */
packageName = ""
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)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)}
//    new File(dir, className + ".java").withPrintWriter { out -> generate(out, className, fields,table) }
}

// 获取包所在文件夹路径
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.TableId;"
  out.println "import com.baomidou.mybatisplus.annotation.TableName;"
  out.println "import lombok.AllArgsConstructor;"
  out.println "import lombok.Builder;"
  out.println "import lombok.Data;"
  out.println "import lombok.NoArgsConstructor;"
  out.println ""
  Set types = new HashSet()

  fields.each() {
    types.add(it.type)
  }

  if (types.contains("Date")) {
    out.println "import java.util.Date;"
    out.println ""
  }

  if (types.contains("InputStream")) {
    out.println "import java.io.InputStream;"
  }

//  out.println "/**\n" +
//          " * @Description  \n" +
//          " * @Author  yanlp\n" +
//          " * @Date "+ new SimpleDateFormat("yyyy-MM-dd").format(new Date()) + " \n" +
//          " */"
//  out.println ""
  out.println "@Data"
  out.println "@Builder"
  out.println "@AllArgsConstructor"
  out.println "@NoArgsConstructor"
  out.println "@TableName(\"" + table.getName() + "\")"
  // out.println "public class $className  implements Serializable {"
  out.println "public class $className {"
//  out.println ""
//  out.println genSerialID()
  fields.each() {
    out.println ""
    // 输出注释
    if (isNotEmpty(it.comment)) {
      out.println "    /**"
      out.println "     * ${it.comment.toString()}"
      out.println "     */"
    }

    if (it.annos != "") out.println "${it.annos.replace("[@Id]", "")}"

    // 输出成员变量
    out.println "    private ${it.type} ${it.name};"
  }

  // 输出get/set方法
//    fields.each() {
//        out.println ""
//        out.println "\tpublic ${it.type} get${it.name.capitalize()}() {"
//        out.println "\t\treturn this.${it.name};"
//        out.println "\t}"
//        out.println ""
//
//        out.println "\tpublic void set${it.name.capitalize()}(${it.type} ${it.name}) {"
//        out.println "\t\tthis.${it.name} = ${it.name};"
//        out.println "\t}"
//    }
  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() }.value
    def comm =[
            colName : col.getName(),
            name :  javaName(col.getName(), false),
            type : typeStr,
            comment: col.getComment(),
            // annos: "\t@Column(name = \""+col.getName()+"\" )"]
            annos: ""]
    if("id".equals(Case.LOWER.apply(col.getName())))
      comm.annos = "    @TableId(type = IdType.AUTO)"
    fields += [comm]
  }
}

// 处理类名（这里是因为我的表都是以t_命名的，所以需要处理去掉生成类名时的开头的T，
// 如果你不需要那么请查找用到了 javaClassName这个方法的地方修改为 javaName 即可）
def javaClassName(str, capitalize) {
  def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
          .collect { Case.LOWER.apply(it).capitalize() }
          .join("")
          .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
  // 去除开头的T
  // http://developer.51cto.com/art/200906/129168.html
  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 = str.split(/(?<=[^\p{IsLetter}])/).collect { Case.LOWER.apply(it).capitalize() }
//            .join("").replaceAll(/[^\p{javaJavaIdentifierPart}]/, "_")
//    capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
  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 str

  if(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;"
}

效果图

参考