• 因：使用SpringBoot -jpa，需要手动配置Entity

• 但是如果你的表中有很多属性，或者有很多表怎么办？？ 每个手动写？ 还是用mybatis。写mapper？？？
• 解决：使用idea自动工具
  
• 使用工具可以生成pojo对象，但是缺少了注解：
• 手动修改李groovy文件，方便以后一键生成：

import com.intellij.database.model.DasTable

import com.intellij.database.model.ObjectKind

import com.intellij.database.util.Case

import com.intellij.database.util.DasUtil

/*

 * Available context bindings:

 *   SELECTION   Iterable<DasObject>

 *   PROJECT     project

 *   FILES       files helper

 */

packageName = "com.inyu.entity;"

typeMapping = [

        (~/(?i)int/)                      : "long",

        (~/(?i)float|double|decimal|real/): "double",

        (~/(?i)datetime|timestamp/)       : "java.sql.Timestamp",

        (~/(?i)date/)                     : "java.sql.Date",

        (~/(?i)time/)                     : "java.sql.Time",

        (~/(?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)

  new File(dir, className + ".java").withPrintWriter { out -> generate(out,table, className, fields) }

}

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

  def tableName = table.getName();

  out.println "package $packageName"

  out.println ""

  out.println ""

  out.println "public class $className {"

  out.println ""

  fields.each() {

    if (it.annos != "") out.println "  ${it.annos}"

    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 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 += [[

                       name : javaName(col.getName(), false),

                       colum: col.getName(),

                       type : typeStr,

                       annos: ""]]

  }

}

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]

}