IDEA 生成Java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/)                      : "long",
  (~/(?i)float|double|decimal|real/): "double",
  (~/(?i)datetime|timestamp/)       : "java.sql.Timestamp",
  (~/(?i)date/)                     : "Date",
  (~/(?i)time/)                     : "java.sql.Time",
//  (~/(?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 }.each { generate(it, dir) }
}
 
def generate(table, dir) {
  def className = javaName(table.getName(), true)
  def fields = calcFields(table)
  packageName = getPackageName(dir)
  new File(dir, className + ".java").withPrintWriter("utf-8") { 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 lombok.Data;"
  out.println "import javax.persistence.*;"
  out.println "import java.io.Serializable;"
  out.println "import io.swagger.annotations.ApiModel;"
  out.println "import io.swagger.annotations.ApiModelProperty;"
 
  Set types = new HashSet()
  fields.each() {
    types.add(it.type)
  }
  if (types.contains("Date")) {
    out.println "import java.util.Date;"
    out.println "import com.fasterxml.jackson.annotation.JsonFormat;"
    out.println "import org.springframework.format.annotation.DateTimeFormat;"
  }
 
  if (types.contains("InputStream")) {
    out.println "import java.io.InputStream;"
  }
 
  out.println ""
  out.println ""
  out.println "/**\n" +
          " * ${table.comment}\n"+
          " * \n"+
          " * @Author Gavino\n" + //1. 修改idea为自己名字
          " * @Create " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + " \n" +
          " * @Description \n" +
          " */"
  out.println "@Data"
 
  out.println "@ApiModel(value=\"${table.comment}\")"
  out.println "@Table ( name =\"" + table.getName() + "\" , schema = \"\")" //2. schema = \"后面添加自己的表空间名称(mysql可以不添加, 不用这个schema属性也行)
 
  out.println "public class $className implements Serializable{"
  out.println ""
  out.println " "+genSerialID()
  out.println ""
  fields.each() {
    out.println ""
    // 输出注释
    if (isNotEmpty(it.commoent)) {
      out.println "  /**"
      out.println "  * ${it.commoent.toString()}"
      out.println "  */"
    }
 
    if ((it.annos+"").indexOf("[@Id]") >= 0){
      out.println "  @Id"
      out.println "  @GeneratedValue(strategy = GenerationType.IDENTITY,generator = \"select sequence.nextval from dual\")"
    }
    if (it.type == "Date"){
      out.println "  @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = \"yyyy-MM-dd HH:mm:ss\", timezone = \"GMT+8\")"
      out.println "  @DateTimeFormat(pattern = \"yyyy-MM-dd HH:mm:ss\")"
    }
 
    out.println "  @ApiModelProperty(value = \"${it.commoent.toString()}\")"
 
    out.println "  @Column(name = \"${it.colum}\")"
    out.println "  private ${it.type} ${it.colum};"
 
  }
  out.println ""
 
  /*fields.each() {
    out.println ""
    out.println "  public ${it.type} get${it.name.capitalize()}() {"
    out.println "    return ${it.name};"
    out.println "  }"
    out.println ""
    out.println "  public void set${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 = [
                 name : javaName(col.getName(), false),
                 colum: col.getName(),
                 type : typeStr,
                 commoent: col.getComment(),
                 annos   : "@Column(name = \"" + col.getName() + "\" )"]
    if ("n_a".equals(Case.LOWER.apply(col.getName())))
      comm.annos += "[@Id]"
    fields += [comm]
  }
}
 
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 isNotEmpty(content) {
  return content != null && content.toString().trim().length() > 0
}
 
static String genSerialID() {
  return "\tprivate static final long serialVersionUID =  " + Math.abs(new Random().nextLong()) + "L;"
}