输入实体

基类

import lombok.Data;@Data
public class PersonInputDto {private Integer id;private String name;
}

子类

@Data
@AllArgsConstructor
@NoArgsConstructor
public class ManPerson extends PersonInputDto {private String sex;
}@Data
@AllArgsConstructor
@NoArgsConstructor
public class WomenPerson extends PersonInputDto {private String sex;
}

创建抽象接口

接口

public interface Person {Object query(PersonInputDto inputDto);Integer getType();
}

抽象具体实现

@Component
public class ManHandle implements Person {@Overridepublic Object query(PersonInputDto inputDto) {if (inputDto instanceof ManPerson) {ManPerson manPerson = (ManPerson) inputDto;manPerson.setId(1);manPerson.setSex("男");manPerson.setName("name1");return manPerson;}return null;}@Overridepublic Integer getType() {return 1;}
}

@Component
public class WomenHandle implements Person {@Overridepublic Object query(PersonInputDto inputDto) {if (inputDto instanceof WomenPerson) {WomenPerson womenPerson = (WomenPerson) inputDto;womenPerson.setId(2);womenPerson.setSex("女");womenPerson.setName("name2");return womenPerson;}return null;}@Overridepublic Integer getType() {return 2;}
}

两种方式创建工厂

创建工厂1

import com.alibaba.fastjson.JSON;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.stereotype.Component;import java.util.Collection;
import java.util.HashMap;
import java.util.Map;@Component
public class MainTestFactory implements ApplicationListener<ApplicationReadyEvent> {private static final Map<Integer, Person> handlerMap = new HashMap<>();public Person getAccountModel(Integer type) {return handlerMap.get(type);}@Overridepublic void onApplicationEvent(ApplicationReadyEvent applicationReadyEvent) {Collection<Person> values = applicationReadyEvent.getApplicationContext().getBeansOfType(Person.class).values();values.forEach(value -> handlerMap.put(value.getType(), value));System.out.println("handlerMap ===> " + JSON.toJSONString(handlerMap));}
}

创建工厂2

import com.alibaba.fastjson.JSON;
import org.springframework.stereotype.Component;import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.List;
import java.util.Map;@Component
public class MainTestFactory2 {@Resourceprivate List<Person> personList;private static final Map<Integer, Person> handlerMap = new HashMap<>();public Person getAccountModel(Integer type) {return handlerMap.get(type);}@PostConstructpublic void init() {personList.forEach(value -> handlerMap.put(value.getType(), value));System.out.println("handlerMap ===> " + JSON.toJSONString(handlerMap));}
}

服务调用

@RestController
@RequestMapping({"/", ""})
public class DemoController {@Resourceprivate MainTestFactory factory;@Resourceprivate MainTestFactory2 mainTestFactory2;@PostMapping("/test")@ResponseBody@ApiOperation("test")public String test() {ManPerson query = (ManPerson) factory.getAccountModel(1).query(new ManPerson());System.out.println(JSON.toJSONString(query));ManPerson query1 = (ManPerson) factory.getAccountModel(2).query(new ManPerson());System.out.println(query1);WomenPerson query2 = (WomenPerson) mainTestFactory2.getAccountModel(2).query(new WomenPerson());return JSON.toJSONString(query2);}}