<dependency>
????<groupId>org.freemarker</groupId>
????<artifactId>freemarker</artifactId>
????<version>2.3.23</version>
</dependency>

package?${package};

import?java.io.Serializable;

/**
?*?<p>
?*?${tableComment}
?*?</p>
?*
?*?@author?${author}
?*?@since?${date}
?*/
public?class?${entityClass}?implements?Serializable?{

????private?static?final?long?serialVersionUID?=?1L;
????
????<#--屬性遍歷-->
????<#list?columns?as?pro>

????/**
?????*?${pro.comment}
?????*/
????private?${pro.propertyType}?${pro.propertyName};
????</#list>

????<#--屬性get||set方法-->
????<#list?columns?as?pro>
????public?${pro.propertyType}?get${pro.propertyName?cap_first}()?{
????????return?this.${pro.propertyName};
????}

????public?${entityClass}?set${pro.propertyName?cap_first}(${pro.propertyType}?${pro.propertyName})?{
????????this.${pro.propertyName}?=?${pro.propertyName};
????????return?this;
????}
????</#list>
}

public?class?CodeGeneratorDemo?{

????public?static?void?main(String[]?args)?throws?IOException,?TemplateException?{
????????Map<String,?Object>?objectMap?=?new?HashMap<>();
????????//定義包路徑
????????objectMap.put("package",?"com.example.test");
????????//定義實體類
????????objectMap.put("entityClass",?"Student");

????????//定義實體類屬性
????????List<Map<String,?Object>>?columns?=?new?ArrayList<>();
????????//姓名字段
????????Map<String,?Object>?column1?=?new?HashMap<>();
????????column1.put("propertyType",?"String");
????????column1.put("propertyName",?"name");
????????column1.put("comment",?"姓名");
????????columns.add(column1);
????????//年齡字段
????????Map<String,?Object>?column2?=?new?HashMap<>();
????????column2.put("propertyType",?"Integer");
????????column2.put("propertyName",?"age");
????????column2.put("comment",?"年齡");
????????columns.add(column2);

????????//定義類的屬性
????????objectMap.put("columns",?columns);
????????//定義作者
????????objectMap.put("author",?"張三");
????????//定義創(chuàng)建時間
????????objectMap.put("date",?new?SimpleDateFormat("yyyy-MM-dd").format(new?Date()));
????????//定義類描述
????????objectMap.put("tableComment",?"學生信息");

????????//生產目標代碼
????????Configuration?configuration?=?new?Configuration(Configuration.VERSION_2_3_23);
????????configuration.setDefaultEncoding(Charset.forName("UTF-8").name());
????????configuration.setClassForTemplateLoading(CodeGeneratorDemo.class,?"/");
????????Template?template?=?configuration.getTemplate("/templates/entity.java.ftl");
????????FileOutputStream?fileOutputStream?=?new?FileOutputStream(new?File("../src/main/java/com/example/generator/Student.java"));
????????template.process(objectMap,?new?OutputStreamWriter(fileOutputStream,?Charset.forName("UTF-8").name()));
????????fileOutputStream.close();
????????System.out.println("文件創(chuàng)建成功");

????}
}

package?com.example.test;

import?java.io.Serializable;

/**
?*?<p>
?*?學生信息
?*?</p>
?*
?*?@author?張三
?*?@since?2021-08-22
?*/
public?class?Student?implements?Serializable?{

????private?static?final?long?serialVersionUID?=?1L;
????

????/**
?????*?姓名
?????*/
????private?String?name;

????/**
?????*?年齡
?????*/
????private?Integer?age;

????public?String?getName()?{
????????return?this.name;
????}

????public?Student?setName(String?name)?{
????????this.name?=?name;
????????return?this;
????}
????public?Integer?getAge()?{
????????return?this.age;
????}

????public?Student?setAge(Integer?age)?{
????????this.age?=?age;
????????return?this;
????}
}