Java Long类型处理精度丢失问题 传递给前端精度丢失

推荐统一处理 不需要单独处理了

package com.wochanye.ssc.portal.config;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;

import java.math.BigInteger;


@Configuration
@AutoConfigureAfter(JacksonAutoConfiguration.class)
public class JacksonConfiguration {

    public JacksonConfiguration(ObjectMapper objectMapper) {
        SimpleModule module = new SimpleModule();
        module.addSerializer(new ToStringSerializer(Long.TYPE));
        module.addSerializer(new ToStringSerializer(Long.class));
        module.addSerializer(new ToStringSerializer(BigInteger.class));
        objectMapper.registerModule(module);
    }

}

方法一、使用JsonSerialize注解的时候把Long自动转为String

import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
 
@JsonSerialize(using = ToStringSerializer.class)
private Long id;

方法二、使用JsonSerialize注解的时候把Long自动转为String

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
 
 
 
@Configuration
@AutoConfigureAfter(JacksonAutoConfiguration.class)
public class JacksonConfiguration {
 
    public JacksonConfiguration(ObjectMapper objectMapper) {
        SimpleModule module = new SimpleModule();
        module.addSerializer(new ToStringSerializer(Long.TYPE));
        module.addSerializer(new ToStringSerializer(Long.class));
        module.addSerializer(new ToStringSerializer(BigInteger.class));
        objectMapper.registerModule(module);
    }
 
}