idea 通过 Generate POJOs.groovy 生成实体类

Generate POJOs.groovy脚本:

import com.intellij.database.model.DasTable
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil


packageName = ""
typeMapping = [
        (~/(?i)tinyint|smallint|mediumint/)      : "Integer",
        (~/(?i)bool|bit/)                        : "Boolean",
        (~/(?i)int/)                      : "Long",
        (~/(?i)float|double|decimal|real/): "BigDecimal",
        (~/(?i)datetime|timestamp/)       : "Date",
        (~/(?i)date/)                     : "Date",
        (~/(?i)time/)                     : "Date",
        (~/(?i)/)                         : "String",
        (~/(?i)blob|binary|bfile|clob|raw|image/): "InputStream"
]

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,table, fields) }
}

def generate(out, className,table, fields) {

  Set<String> types = new HashSet<String>()
  fields.each() {
    types.add(it.type)
  }

  out.println "package $packageName"
  out.println ""
  out.println ""
  out.println "import antu.com.annotations.Column;"
  out.println "import antu.com.annotations.PrimaryKey;"
  out.println "import antu.com.annotations.TableName;"
  if (types.contains("Date")) {
    out.println "import java.util.Date;"
  }

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

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

  out.println ""
  out.println "/**
" +
          " * @Author CYH 
" +
          "**/"
  out.println "@TableName("${table.toString().replaceAll("table:","")}")"
  out.println "public class $className {"
  out.println ""
  fields.each() {
    out.println ""
    if (it.annos != "") out.println "  ${it.annos}"
    if (it.comment != "")  out.println "  /*** ${it.comment} */"
    out.println "  @Column("${it.name.toUpperCase()}")"
    out.println "  private ${it.type} ${it.name};"
  }
  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 getPackageName(dir) {
  return dir.toString().replaceAll("\\", ".").replaceAll("^.*src(\.main\.java\.)?", "") + ";"
}

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
    fields += [[
                       column : col.getName(),
                       comment: col.getComment(),
                       name : javaName(col.getName(), false),
                       type : typeStr,
                       annos: ""]]
  }
}

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]
}

在idea右侧Database工具栏中新建数据库连接后选中表如图操作即可生成实体类