IntelliJ IDEA 自定义 Generate POJOs.groovy 生成 POJO

1，找到目录，新建MyGenerate POJOs.groovy

2，自定义MyGenerate POJOs.groovy

import com.intellij.database.model.DasTable
import com.intellij.database.model.ObjectKind
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil
import java.io.*
import java.text.SimpleDateFormat

/*
 * Available context bindings:
 *   SELECTION   Iterable<DasObject>
 *   PROJECT     project
 *   FILES       files helper
 */
packageName = "com.n22.cs.drp.model"
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 javax.persistence.Column;"
  out.println "import javax.persistence.Entity;"
  out.println "import javax.persistence.Table;"
  out.println "import java.io.Serializable;"
  out.println "import lombok.Data;"
  out.println "import lombok.AllArgsConstructor;"
  out.println "import lombok.NoArgsConstructor;"
  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 "/**
" +
          " * @Description  
" +
          " * @Author  zhulei
" +
          " * @Date "+ new SimpleDateFormat("yyyy-MM-dd").format(new Date()) + " 
" +
          " */"
  out.println ""
  out.println "@Data"
  out.println "@AllArgsConstructor"
  out.println "@NoArgsConstructor"
  out.println "@Entity"
  out.println "@Table ( name =""+table.getName() +"" )"
  out.println "public class $className  implements Serializable {"
  out.println ""
  out.println genSerialID()
  fields.each() {
    out.println ""
    // 输出注释
    if (isNotEmpty(it.commoent)) {
      out.println "	/**"
      out.println "	 * ${it.commoent.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 "	public ${it.type} get${it.name.capitalize()}() {"
//        out.println "		return this.${it.name};"
//        out.println "	}"
//        out.println ""
//
//        out.println "	public void set${it.name.capitalize()}(${it.type} ${it.name}) {"
//        out.println "		this.${it.name} = ${it.name};"
//        out.println "	}"
//    }
  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,
            commoent: col.getComment(),
            annos: "	@Column(name = ""+col.getName()+"" )"]
    if("id".equals(Case.LOWER.apply(col.getName())))
      comm.annos +=["@Id"]
    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.htm
  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 "	private static final long serialVersionUID =  "+Math.abs(new Random().nextLong())+"L;"
}

3，想要有@Data，@Entity和@ Column注释，请加入lombok和persistence-api依赖

<dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>persistence-api</artifactId>
        <version>1.0.2</version>
</dependency>

<dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.8</version>
</dependency>    

4，生成POJO效果如下

package com.n22.cs.drp.model;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;
import java.io.Serializable;

import lombok.Data;

/**
 * @Description  
 * @Author  zhulei
 * @Date 2020-07-08 
 */

@Data
@Entity
@Table ( name ="tr_dept_eleme_mapping" )
public class TrDeptElemeMappingEntity  implements Serializable {

    private static final long serialVersionUID =  6224989432472255038L;

    /**
     * 部门内部代码
     */
       @Column(name = "inner_code" )
    private String innerCode;

    /**
     * 饿了么对应的商铺Id
     */
       @Column(name = "shop_id" )
    private String shopId;

    /**
     * 达达商铺号
     */
       @Column(name = "dada_shop_id" )
    private String dadaShopId;

    /**
     * 权重-占的百分比
     */
       @Column(name = "proportion" )
    private Long proportion;

    /**
     * 关联的内代码
     */
       @Column(name = "rela_inner_code" )
    private String relaInnerCode;

    /**
     * 蜂鸟对应的门店Id
     */
       @Column(name = "fengniao_shop_id" )
    private String fengniaoShopId;

    /**
     * 美团对应的门店Id
     */
       @Column(name = "meituan_shop_id" )
    private String meituanShopId;

    /**
     * 配送时间(针对预订单)
     */
       @Column(name = "delivery_time" )
    private String deliveryTime;

    /**
     * 1-饿了么 2-美团
     */
       @Column(name = "source_type" )
    private String sourceType;

}