1、修改Generate poJOs.groovy文件
在项目下方点击Scratches and Consoles→ Extensions→ Database Tools and SQL箭头→schema→ Generate POJOs.groovy
import com.intellij.database.model.DasTable
import com.intellij.database.model.ObjectKind
import com.intellij.database.util.Case
import com.intellij.database.util.DasUtil
import java.io.*
import java.text.SimpleDateFormat
//自定义包名
packageName = ""
typeMapping = [
//类型映射
(~/(?i)tinyint|smallint|mediumint/) : "Integer",
(~/(?i)int/) : "Long",
(~/(?i)bool|bit/) : "Boolean",
(~/(?i)float|double|decimal|real/) : "BigDecimal",
(~/(?i)datetime|timestamp|date|time/) : "Date",
(~/(?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 && it.getKind() == ObjectKind.TABLE }.each { generate(it, dir) }
}
def generate(table, dir) {
def className = javaName(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)}
}
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 com.baomidou.mybatisplus.annotation.IdType;"
out.println "import com.baomidou.mybatisplus.annotation.TableField;"
out.println "import com.baomidou.mybatisplus.annotation.TableId;"
out.println "import com.baomidou.mybatisplus.annotation.TableName;"
out.println("import lombok.EqualsAndHashCode;")
out.println "import lombok.experimental.Accessors;"
out.println "import java.io.Serializable;"
out.println "import lombok.Data;"
Set types = new HashSet()
fields.each() {
types.add(it.type)
}
if (types.contains("Date")) {
out.println "import java.util.Date;"
}
if (types.contains("InputStream")) {
out.println "import java.io.InputStream;"
}
out.println ""
out.println ""
out.println "@EqualsAndHashCode(callSuper = false)"
out.println "@Accessors(chain = true)"
out.println "@TableName ( ""+table.getName() +"" )"
out.println "@Data"
out.println "public class $className implements Serializable {"
out.println ""
out.println genSerialID()
fields.each() {
out.println ""
//添加字段注释
if (isNotEmpty(it.commoent)) {
out.println "t/**"
out.println "t * ${it.commoent.toString()}"
out.println "t */"
}
if (it.annos != "") out.println " ${it.annos.replace("[@TableId]", "")}"
//显示变量
out.println "tprivate ${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
def comm =[
colName : col.getName(),
name : javaName(col.getName(), false),
type : typeStr,
commoent: col.getComment(),
annos: "t@TableField(value = ""+col.getName()+"")"]
if("id".equals(col.getName()))
comm.annos = comm.annos.toString().replace("@TableField(value = "id")","@TableId(value = "id", type = IdType.AUTO)")
fields += [comm]
}
}
def javaClassName(str, capitalize) {
def s = com.intellij.psi.codeStyle.NameUtil.splitNameIntoWords(str)
.collect { Case.LOWER.apply(it).capitalize() }
.join("")
.replaceAll(/[^p{javaJavaIdentifierPart}[_]]/, "_")
s = s[1..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 isNotEmpty(content) {
return content != null && content.toString().trim().length() > 0
}
static String changeStyle(String str, boolean toCamel){
if(!str || str.size() <= 1)
return str
if(toCamel){
String r = str.toLowerCase().split('_').collect{cc -> Case.LOWER.apply(cc).capitalize()}.join('')
return r[0].toLowerCase() + r[1..-1]
}else{
str = str[0].toLowerCase() + str[1..-1]
return str.collect{cc -> ((char)cc).isUpperCase() ? '_' + cc.toLowerCase() : cc}.join('')
}
}
static String genSerialID()
{
return "tprivate static final long serialVersionUID = "+Math.abs(new Random().nextLong())+"L;"
}
2、idea中连接数据库
找到idea的database,添加一个data source,我这里选择的是mysql
配置数据源地址、端口、用户密码、数据库名,点击测试连接,成功后点击ok,即可看见数据库表信息
3、生成entity代码
1)、选中要生成entity的数据库表,右键tools→Scripted Extensions→Generate poJOs.groovy
3)、右下角会有提示,已经生成
4、查看生成的实体类
原文地址:https://blog.csdn.net/weixin_36027342/article/details/134687974
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