原文地址
JPA 主动生成 POJO
通过表生成 POJO 类
这篇文章不波及 idea 配置数据源教程，该文章应用前提是用户已配置好 idea 数据源
批改自带的生成类
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.text.SimpleDateFormat
/*
* Available context bindings:
* SELECTION Iterable<DasObject>
* PROJECT project
* FILES files helper
*/
packageName = ""
typeMapping = [(~/(?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) }
// new File(dir, className + ".java").withPrintWriter {out -> generate(out, className, fields,table) }
}
// 获取包所在文件夹门路
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 lombok.Data;"out.println"import javax.persistence.Column;"out.println"import javax.persistence.Entity;"out.println"import javax.persistence.Table;"out.println"import javax.persistence.Id;"out.println"import javax.persistence.GeneratedValue;"out.println"import java.io.Serializable;"
Set types = new HashSet()
fields.each() {types.add(it.type)
}
if (types.contains("Date")) {out.println "import java.util.Date;"}
if (types.contains("BigDecimal")) {out.println "import java.math.BigDecimal;"}
if (types.contains("InputStream")) {out.println "import java.io.InputStream;"}
out.println ""out.println"/**\n"+" * "+ table.getName() +"\n"+" * \n"+" * @author <a href = \"mailto:njpkhuan@gmail.com\" > huan </a >\n"+ //1. 批改 idea 为本人名字" * @date "+ new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) +" \n"+" */"out.println""
out.println "@Data"
out.println "@Entity"
out.println "@Table (name =\"" + table.getName() + "\" , schema = \""+ DasUtil.getSchema(table)+"\")"
//2. schema = \" 前面增加本人的表空间名称 (mysql 能够不增加, 不必这个 schema 属性也行)
out.println "public class $className implements Serializable {"
out.println ""
out.println genSerialID()
fields.each() {
out.println ""
// 输入正文
if (isNotEmpty(it.commoent)) {
out.println "\t/**"
out.println "\t * ${it.commoent.toString()}"
out.println "\t */"
}
if ((it.annos + "").indexOf("[@Id]") >= 0) out.println"\t@Id\r\n\t@GeneratedValue(strategy = GenerationType.IDENTITY)"if (it.annos !="") out.println "${it.annos.replace("[@Id]","")}"
// 输入成员变量
out.println "\tprivate ${it.type} ${it.name};"
}
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 : "\t@Column(name = \"" + col.getName() + "\" )"]
if ("id".equals(Case.LOWER.apply(col.getName())))
comm.annos += ["@Id"]
fields += [comm]
}
}
// 这里是解决数据库表前缀的办法，这里解决的是 t_xxx 命名的表
// 曾经批改为应用 javaName, 如果有须要能够在 def className = javaName(table.getName(), true) 中批改为 javaClassName
// 解决类名（这里是因为我的表都是以 t_命名的，所以须要解决去掉生成类名时的结尾的 T，// 如果你不须要去掉表的前缀，那么请查找用到了 javaClassName 这个办法的中央批改为 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}[_]]/, "_")
// 去除结尾的 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('')
}
}
// 生成序列化的 serialVersionUID
static String genSerialID() {return "\tprivate static final long serialVersionUID =" + Math.abs(new Random().nextLong()) + "L;"
}
应用 (右击表名)
成果
文件夹要抉择 model 文件夹，其余文件夹不行
package com.fedtech.sso.config;
import lombok.Data;
import javax.persistence.*;
import java.io.Serializable;
import java.util.Date;
/**
* user
*
* @author <a href = "mailto:njpkhuan@gmail.com" > huan </a >
* @date 2021-02-18 14:49:22
*/
@Data
@Entity
@Table (name ="user" , schema = "pension_pz")
public class User implements Serializable {
private static final long serialVersionUID = 2682344461617421681L;
/**
* id
*/
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "id")
private Long id;
/**
* 用户登录账号
*/
@Column(name = "login_name")
private String loginName;
/**
* 明码
*/
@Column(name = "password")
private String password;
/**
* 昵称
*/
@Column(name = "nick_name")
private String nickName;
/**
* 所属区域
*/
@Column(name = "area_id")
private Long areaId;
/**
* 所属服务组织 / 机构
*/
@Column(name = "org_id")
private Long orgId;
/**
* 所属评估机构
*/
@Column(name = "assess_org_id")
private Long assessOrgId;
/**
* 电话
*/
@Column(name = "phone")
private String phone;
/**
* 头像
*/
@Column(name = "avatar")
private String avatar;
/**
* 性别：1 男,2 女,0 窃密
*/
@Column(name = "gender")
private String gender;
/**
* 用户认证 token
*/
@Column(name = "token")
private String token;
/**
* app 验证信息
*/
@Column(name = "token_app")
private String tokenApp;
/**
* 0: 待激活 1: 失常 2：已删除 3 已禁用
*/
@Column(name = "status")
private String status;
/**
* 联系人
*/
@Column(name = "link_name")
private String linkName;
/**
* 邮箱
*/
@Column(name = "email")
private String email;
/**
* 盐
*/
@Column(name = "salt")
private String salt;
/**
* 记录创立工夫
*/
@Column(name = "create_time")
private Date createTime;
/**
* 记录更新工夫
*/
@Column(name = "modify_time")
private Date modifyTime;
/**
* 组织名称
*/
@Column(name = "org_name")
private String orgName;
/**
* 省名称
*/
@Column(name = "province_name")
private String provinceName;
/**
* 市名称
*/
@Column(name = "city_name")
private String cityName;
/**
* 区县名称
*/
@Column(name = "county_name")
private String countyName;
/**
* 镇名称
*/
@Column(name = "town_name")
private String townName;
/**
* 村名称
*/
@Column(name = "village_name")
private String villageName;
/**
* 创立用户
*/
@Column(name = "create_uid")
private Long createUid;
}