idea快速生成entity mapper文件

*前置说明：

• 主要是将IDEA自带的Generate POJOs.groovy文件进行简单修改，简易的实现一键生成；
• 以生成文件为主，实现SQL语句功能推荐easycode插件，或Mybatis插件
• 因为小辣椒（lombok 插件)的使用，生成实体类不再包含set/get方法，如有需要看Generate POJOs.groovy原文件自行添加回来
• 数据库表名中间带_的命名未处理好！！

1.生成entity实体类的文件代码：

点击查看代码

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

/*
 *   生成表的实体类
 */

packageName = ""
typeMapping = [
  (~/(?i)tinyint|smallint|mediumint/)      : "Integer",
  (~/(?i)int/)                             : "long",
  (~/(?i)bool|bit/)                        : "Boolean",
  (~/(?i)float|double|decimal|real/)       : "double",
  (~/(?i)datetime|timestamp/)              : "LocalDateTime",
  (~/(?i)date/)                            : "LocalDate",
  (~/(?i)time/)                            : "java.sql.Time",
  (~/(?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)
  packageName = getPackageName(dir)
  def fields = calcFields(table)
  new File(dir, className + ".java").withPrintWriter { out -> generate(out, className, fields) }
}

def getPackageName(dir) {
    return dir.toString().replaceAll("\\\\", ".").replaceAll("/", ".").replaceAll("^.*src(\\.main\\.java\\.)?", "") + ";"
}

def generate(out, className, fields) {
  out.println "package $packageName"
  out.println ""
  out.println "import lombok.Data;"
  out.println ""
  out.println "@Data"
  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 ""
  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),
                 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]
}

2.生成映射接口类

点击查看代码

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

/*
 *   生成映射接口类
 */

packageName = ""
typeMapping = [
  (~/(?i)tinyint|smallint|mediumint/)      : "Integer",
  (~/(?i)int/)                             : "long",
  (~/(?i)bool|bit/)                        : "Boolean",
  (~/(?i)float|double|decimal|real/)       : "double",
  (~/(?i)datetime|timestamp/)              : "LocalDateTime",
  (~/(?i)date/)                            : "LocalDate",
  (~/(?i)time/)                            : "java.sql.Time",
  (~/(?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)
  packageName = getPackageName(dir)
  def fields = calcFields(table)
  new File(dir, className + ".java").withPrintWriter { out -> generate(out, className, fields) }
}

def getPackageName(dir) {
    return dir.toString().replaceAll("\\\\", ".").replaceAll("/", ".").replaceAll("^.*src(\\.main\\.java\\.)?", "") + ";"
}

def generate(out, className, fields) {
  out.println "package $packageName"
  out.println ""
  out.println "import org.springframework.stereotype.Repository;"
  out.println ""
  out.println "@Repository"
  out.println "public interface $className {"
  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),
                 type : typeStr,
                 annos: ""]]
  }
}

def javaName(str, capitalize) {
  def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
    .collect { Case.LOWER.apply(it).capitalize() }
    .join("").concat("Mapper")
    .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
  capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
}

3.生成Mybatis映射文件

点击查看代码

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

/*
 *   生成Mybatis映射文件
 */

packageName = ""
typeMapping = [
  (~/(?i)tinyint|smallint|mediumint/)      : "Integer",
  (~/(?i)int/)                             : "long",
  (~/(?i)bool|bit/)                        : "Boolean",
  (~/(?i)float|double|decimal|real/)       : "double",
  (~/(?i)datetime|timestamp/)              : "LocalDateTime",
  (~/(?i)date/)                            : "LocalDate",
  (~/(?i)time/)                            : "java.sql.Time",
  (~/(?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)
  packageName = getPackageName(dir)
  def fields = calcFields(table)
  new File(dir, className + ".xml").withPrintWriter { out -> generate(out, className, fields) }
}

//获取包名
def getPackageName(dir) {
    return dir.toString().replaceAll("\\\\", ".").replaceAll("/", ".").replaceAll("^.*src(\\.main\\.xml\\.)?", "")
}

def generate(out, className, fields) {
  out.println "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>"
  out.println "<!DOCTYPE mapper PUBLIC \"-//mybatis.org//DTD Mapper 3.0//EN\" \"http://mybatis.org/dtd/mybatis-3-mapper.dtd\">"
  out.println ""
  out.println "<mapper namespace=\" \">"
  out.println ""
  out.println ""
  out.println "</mapper>"
}

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),
                 type : typeStr,
                 annos: ""]]
  }
}

def javaName(str, capitalize) {
  def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
    .collect { Case.LOWER.apply(it).capitalize() }
    .join("").concat("Mapper")
    .replaceAll(/[^\p{javaJavaIdentifierPart}[_]]/, "_")
  capitalize || s.length() == 1? s : Case.LOWER.apply(s[0]) + s[1..-1]
}

4.最终结果图