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说明
在传递long类型到前台时,如果long类型的数值比较长,会出现精度丢失的问题。以下是解决办法。
前提
- 版本:Spring Boot 2.0及以上
- 序列化工具Jackson
解决办法
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
/**
* Jackson配置
* @author William
*
*/
@Configuration
public class JacksonConfig {
/**
* Jackson全局转化long类型为String,解决jackson序列化时long类型缺失精度问题
* @return Jackson2ObjectMapperBuilderCustomizer 注入的对象
*/
@Bean
public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
Jackson2ObjectMapperBuilderCustomizer cunstomizer = new Jackson2ObjectMapperBuilderCustomizer() {
@Override
public void customize(Jackson2ObjectMapperBuilder jacksonObjectMapperBuilder) {
jacksonObjectMapperBuilder.serializerByType(Long.TYPE, ToStringSerializer.instance);
}
};
return cunstomizer;
}
}
其他配置,参考:https://blog.csdn.net/xiaoxiangzi520/article/details/76522242