Springboot项目解决前端Long字段精度丢失问题

一、概述

Springboot项目后端把Long类型的数据传给前端，前端可能会出现精度丢失的情况，解决方案是将Long字段转成字符串。 转换为

二、jackson解决方案

1.局部解决

在字段上添加@JsonSerialize(using = ToStringSerializer.class)

2.全局解决

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class JacksonConfig {
    @Bean
    public ObjectMapper objectMapper() {
        ObjectMapper objectMapper = new ObjectMapper();
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(Long.class, ToStringSerializer.instance)
                .addSerializer(Long.TYPE, ToStringSerializer.instance);
        objectMapper.registerModule(simpleModule);
        return objectMapper;
    }
}