首先，實體類中的ID型別為LONG

前端接收到的ID精度丟失

{
  "success": true,
  "code": "200",
  "data": [
    {
      "id": 1199222178982396000, //這裡精度丟失了！！
      "idCard": "422202199910210811",
      "personName": "string",
      "age": 0,

    }
  ],
  "errorMessage": null,
  "currentTime": "2019-11-26T07:06:25.301+0000"
}

但是資料庫中的ID是正常的

原因：JS中沒有長整型的型別，所以我們返回時應該轉化為字串型別

解決方案（SPRING BOOT版）

我這裡使用的fastjson進行序列化

使用MAVEN引入FASTJSON的依賴

 <!--fastjson-->
 <dependency>
     <groupId>com.alibaba</groupId>
     <artifactId>fastjson</artifactId>
     <version>1.2.62</version>
 </dependency>

FASTJSON的配置類

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;

/**
 * @Classname JsonConfig
 * @Date 2019/11/26 15:16
 * @Created by ChuWanJiang
 */
@Configuration
public class JsonConfig {
    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
        // 1.定義一個converters轉換訊息的物件
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        // 2.新增fastjson的配置資訊，比如: 是否需要格式化返回的json資料
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
        // 3.在converter中新增配置資訊
        fastConverter.setFastJsonConfig(fastJsonConfig);
        // 4.將converter賦值給HttpMessageConverter
        HttpMessageConverter<?> converter = fastConverter;
        // 5.返回HttpMessageConverters物件
        return new HttpMessageConverters(converter);
    }
}
 

最後在實體類中加上註解

    @ApiModelProperty(value = "id")
    @JSONField(serializeUsing = ToStringSerializer.class)
    @TableId(value = "id", type = IdType.ID_WORKER)
    private Long id;

其中，引入的類為

import com.alibaba.fastjson.annotation.JSONField;
import com.alibaba.fastjson.serializer.ToStringSerializer;

大功告成

{
  "code": "200",
  "currentTime": 1574752655889,
  "data": [
    {
      "age": 0,
      "id": "1199225233215705089",
      "idCard": "422202199910210811",
      "personName": "string"
    }
  ],
  "success": true
}