mybatis-plus使用@EnumValue处理枚举类型的示例代码

自mybatis3.1.0开始，如果你无需使用原生枚举，可配置默认枚举来省略扫描通用枚举配置 默认枚举配置

1、配置文件配置枚举所在的包

#配置枚举 支持通配符 * 或者 ; 分割
mybatis-plus.type-enums-package=com.iscas.biz.mp.test.model.enums
mybatis-plus.configuration.default-enum-type-handler=org.apache.ibatis.type.EnumOrdinalTypeHandler

2、定义一个枚举，在需要存入数据库的字段上加上@EnumValue注解

package com.iscas.biz.mp.test.model.enums;

import com.baomidou.mybatisplus.annotation.EnumValue;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonValue;
import com.fasterxml.jackson.annotation.JsonView;
import com.iscas.biz.mp.test.model.TestEntity;
import lombok.Getter;

import java.util.Objects;



public enum SexEnum  {

  
  MAN(1, "男"),

  
  WOMEN(2, "女");


  @EnumValue
  private final int code;

  @JsonValue
  public int getCode() {
    return this.code;
  }

  public String getDescription() {
    return description;
  }

  private final String description;
  SexEnum(int val, String description) {
    this.code = val;
    this.description = description;
  }

  @JsonCreator
  public static SexEnum getByCode(int code) {
    for (SexEnum value : SexEnum.values()) {
      if (Objects.equals(code, value.getCode())) {
 return value;
      }
    }
    return null;
  }

}

3、测试实体使用枚举

package com.iscas.biz.mp.test.model;

import com.iscas.biz.mp.test.model.enums.SexEnum;
import lombok.Data;


@Data
public class TestEntity {
  private String name;

  private SexEnum sex;
}

4、测试读取和存储带有枚举的实体

package com.iscas.biz.mp.test.controller;

import com.iscas.biz.mp.test.mapper.TestEntityMapper;
import com.iscas.biz.mp.test.model.enums.SexEnum;
import com.iscas.biz.mp.test.model.TestEntity;
import com.iscas.templet.common.baseController;
import com.iscas.templet.common.ResponseEntity;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;


@RestController
@RequestMapping("/testEntity")
public class TestMpEnumController extends baseController {
  @Autowired
  private TestEntityMapper testEntityMapper;

  @GetMapping("/get")
  public ResponseEntity testEntity() {
    ResponseEntity response = getResponse();
    List testEntities = testEntityMapper.selectList(null);
    response.setValue(testEntities);
    return response;
  }
  @PostMapping("/post")
  public ResponseEntity testSaveEntity(@RequestBody TestEntity testEntity) {
    ResponseEntity response = getResponse();
    int insert = testEntityMapper.insert(testEntity);
    response.setValue(insert);
    return response;
  }

}

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