自定义Generate

Intellij IDEA 通过数据库表逆向生成带注释的实体类文件（Generate ）

生成JPA实体文件，生成的代码如下：

import ;
import .*;
import ;
import ;
import ;

@Table ( name ="image" )
@Data
@ApiModel
public class Image  implements Serializable{

private static final long serialVersionUID = 1L;

  @Id
  @Column(name = "id" )
  @ApiModelProperty( value="id")
  private String id;

  @Column(name = "entity_id" )
  @ApiModelProperty( value="实体id-可关联作业单")
  private String entity_id;

  @Column(name = "image_name" )
  @ApiModelProperty( value="图片名称")
  private String image_name;

  @Column(name = "image_path" )
  @ApiModelProperty( value="图片路径")
  private String image_path;

  @Column(name = "create_time" )
  @ApiModelProperty( value="创建时间")
  private  create_time;

  @Column(name = "update_time" )
  @ApiModelProperty( value="修改时间")
  private  update_time;

}

Generate 内容如下

import 
import 
import 
import 

import 
import 

/*
 * Available context bindings:
 *   SELECTION   Iterable<DasObject>
 *   PROJECT     project
 *   FILES       files helper
 *   update by yitianRen 20200324
 */

packageName = ";"
typeMapping = [
        (~/(?i)int/)                      : "Integer",  //数据库类型和Jave类型映射关系
        (~/(?i)float|double|decimal|real/): "Double",
        (~/(?i)bool|boolean/)             : "Boolean",
        (~/(?i)datetime|timestamp/)       : "",
        (~/(?i)date/)                     : "",
        (~/(?i)time/)                     : "",
        (~/(?i)/)                         : "String"
]

("Choose directory", "Choose where to store generated files") { dir ->
   { it instanceof DasTable }.each { generate(it, dir) }
}

def generate(table, dir) {
  def className = javaName((), true)
  def fields = calcFields(table)//更改实体生成规则
  new File(dir, className + ".java").withPrintWriter { out -> generate(out, className, fields, table) }//输出实体类
}

def generate(out, className, fields, table) {
   "package $packageName"
   ""
   "/**\n" +
          " *  \n" +
          " * <p>@Date: " + ().format(("yy-MM-dd HH:mm:ss")).toString() + ".</p>\n" +
          " *\n" +
          " * @author linqh03\n" +
          " */"
   ""
   "import ;"
   "import .*;"
   "import ;"
   "import ;"
   "import ;"
   ""
   "@Table ( name =\"" + () + "\" )"
   "@Data"
   "@ApiModel"
   "public class $className  implements Serializable{"
   ""
   "private static final long serialVersionUID = 1L;"
  () {
     ""
    // 输出注释  这里和下面的 comm是一一对应的
/*    if (isNotEmpty()) {//定义非空校验， ！= ""手写无效
       "// ${}"
    }*/
    if ( == "id")  "  @Id"
    if ( != "")  "  ${}"
     "  @ApiModelProperty( value=\"${}\")"
     "  private ${} ${};"
  }
   ""

   "}"
}

def calcFields(table) {
  (table).reduce([]) { fields, col ->
    def spec = (().getSpecification())
    def typeStr =  { p, t -> (spec).find() }.value
    def comm = [
            name : (),
            type : typeStr,
            commoent: (),
            annos: "@Column(name = \"" + () + "\" )"
    ]
    //对于表中主键自定义注解
    if ("pk".equals((()))){
       = "\t@Id\n"
      //自增主键需要
       += "@Column(name = \"" + () + "\")"
    }
    fields += [comm]//字段对照
  }
}

def javaName(str, capitalize) {
  def s = (str)
          .collect { (it).capitalize() }
          .join("")
          .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
  capitalize || () == 1? s : (s[0]) + s[1..-1]
}


def isNotEmpty(content) {
  return content != null && ().trim().length() > 0
}