【笔记】SpringBoot项目请求参数动态类型

前言

SpringBoot项目请求参数动态类型

正文

com.controller.DemoController.java

import com.bean.BaseType;
import com.bean.TypeDouble;
import com.bean.TypeInt;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class DemoController {

    @RequestMapping("/")
    public String hello(@RequestBody BaseType dto) {
        if (dto instanceof TypeInt typeInt) {
            return "TypeInt: " + typeInt.getD();
        } else if (dto instanceof TypeDouble typeDouble) {
            return "TypeDouble: " + typeDouble.getD();
        } else {
            return "0";
        }
    }

}

com.bean.DemoController.java

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "t")
@JsonSubTypes({
        @JsonSubTypes.Type(value = TypeInt.class, name = "I"),
        @JsonSubTypes.Type(value = TypeDouble.class, name = "D")
})
public class BaseType {

    @JsonProperty("t")
    private String t;

}

com.bean.DemoController.java

import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;

@Data
public class TypeInt extends BaseType {

    @JsonProperty("d")
    private Integer d;

}

com.bean.DemoController.java

import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;

@Data
public class TypeDouble extends BaseType {

    @JsonProperty("d")
    private Double d;

}

完成