Java Long类型处理精度丢失问题

Posted 2023-02-20 wb54979

方法一、使用JsonSerialize注解序列化的时候把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注解序列化的时候把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);