Generate POJOs.groovy 自动生成代码 (二) 生成实体类

​​SpringBoot JPA 自动生成代码 (一) 生成实体类​​，下面脚本如何使用可以参考这篇博客；

这里记录下使用 Mybatis-Plus 时生成实体类：

import com.intellij.database.model.DasTable
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 = "com.sample;"
typeMapping = [
  (~/(?i)int/)                      : "Integer",
  (~/(?i)float|double|decimal|real/): "double",
  (~/(?i)datetime|timestamp/)       : "LocalDateTime",
  (~/(?i)date/)                     : "LocalDate",
  (~/(?i)time/)                     : "LocalDateTime",
  (~/(?i)/)                         : "String"
]

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

def generate(table, dir) {
    // 默认表名
    // def className = javaName(table.getName(), true)
    // 去除表名前缀
    def className = javaClassName(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 java.io.Serializable;"
    out.println "import lombok.Data;"
    Set types = new HashSet()
    out.println "import com.baomidou.mybatisplus.annotation.TableName;"

    // 表字段遍历
    fields.each() {
        // 将表字段类型加入到types里面
        types.add(it.type)
    }

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

    if (types.contains("LocalDateTime")) {
        out.println "import java.time.LocalDateTime;"
        out.println "import com.fasterxml.jackson.annotation.JsonFormat;"
        out.println "import org.springframework.format.annotation.DateTimeFormat;"
    }

    if (types.contains("LocalDate")) {
        out.println "import java.time.LocalDate;"
    }

    if (types.contains("BigDecimal")) {
        out.println "import java.math.BigDecimal;"
    }

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

    out.println ""
    out.println ""
    out.println "/**\n" +
            " * @Description  \n" +
            " * @author  linmengmeng\n" + //1. 修改idea为自己名字
            " * @since " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + " \n" +
            " */"
    out.println "@Data"
    out.println "@TableName(\"" + table.getName() + "\")"
    out.println "public class $className implements Serializable {"
    out.println ""
    out.println genSerialID()
    out.println ""
    fields.each() {
        out.println ""
        // 输出注释
        println it.commoent
        // 输出注释 it 对象： [name:tenantId, type:String, annos:]
        if (isNotEmpty(it.commoent)) {
            out.println "\t/**"
            out.println "\t * ${it.commoent.toString()}"
            out.println "\t */"
        }

        // Spring Data JPA
        /*if (it.colName == "id") {
            out.println "\t@Id"
            out.println "\t@GeneratedValue(strategy = GenerationType.IDENTITY)"
        }*/

        // Mybatis-plus
        if (it.colName == "id") {
            out.println "\t@TableId(value = \"id\", type = IdType.ASSIGN_UUID)"
        }

        if (it.annos != "") out.println "  ${it.annos}"
        // if ((it.annos+"").indexOf("[@Id]") >= 0) out.println "\t@TableId(value = \"id\", type = IdType.ASSIGN_UUID)"
        String type = it.type;
        if (type == "LocalDateTime") {
            out.println "\t@JsonFormat(pattern = \"yyyy-MM-dd HH:mm:ss\", locale = \"zh\", timezone = \"GMT+8\")";
            out.println "\t@DateTimeFormat(pattern = \"yyyy-MM-dd HH:mm:ss\")";
        }

        out.println "\tprivate ${it.type} ${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
    if ("Date".equals(typeStr)) {
      typeStr = "LocalDateTime"
    }
    def comm = [
              colName : col.getName(),  // 表字段名
              name : javaName(col.getName(), false), // 表字段名（无下划线）
              //name : javaClassName(col.getName(), false),
              type : typeStr, // 表类型
              commoent: col.getComment(), // 表字段说明
              annos: ""] // 主键标识 [@Id]
    fields += [comm]
  }
}

// 这里是处理数据库表前缀的方法，这里处理的是t_xxx命名的表
// 已经修改为使用javaName, 如果有需要可以在def className = javaName(table.getName(), true)中修改为javaClassName
// 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，
// 如果你不需要去掉表的前缀，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 airadar_
    s = s[7..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 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
}

//生成序列化的serialVersionUID
static String genSerialID() {
    return "\tprivate static final long serialVersionUID =  " + Math.abs(new Random().nextLong()) + "L;"
}

生成的实体类效果如下：

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.Data;
import org.springframework.format.annotation.DateTimeFormat;

import java.io.Serializable;
import java.time.LocalDateTime;


/**
 * @Description  XX信息历史表
 * @author  linmengmeng
 * @since 2022-09-27 16:08:06 
 */
@Data
@TableName("airadar_asset_vul_info_his")
public class AssetVulInfoHis implements Serializable {

  private static final long serialVersionUID =  7686024001170977261L;


  /**
   * 主键
   */
  @TableId(value = "id", type = IdType.ASSIGN_UUID)
  private String id;


  /**
   * 源主键
   */
  private String assVulId;

  /**
   * 更新时间
   */
  @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", locale = "zh", timezone = "GMT+8")
  @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
  private LocalDateTime updateTime;


  /**
   * 入库时间
   */
  @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", locale = "zh", timezone = "GMT+8")
  @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
  private LocalDateTime insertTime;


  @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", locale = "zh", timezone = "GMT+8")
  @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
  private LocalDateTime closingDate;


  /**
   * 修改人名称
   */
  private String updateName;

}