记录碰到的json转换异常

最新推荐文章于 2025-04-17 16:37:27 发布

旗木卡卡西zz

最新推荐文章于 2025-04-17 16:37:27 发布

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文章标签： json java spring boot

本文链接：https://blog.youkuaiyun.com/weixin_43470118/article/details/139676758

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先把报错信息贴出来：

org.springframework.web.client.RestClientException: Error while extracting response for type [com.mi.info.comb.common.x5protocol.core.dto.X5Response<com.mi.info.miim.fs.service.x5.dto.customer.OwnerPageDTO>] and content type [application/json]; nested exception is org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Unrecognized field "country" (class com.mi.info.miim.fs.service.x5.dto.customer.OwnerInfoDTO), not marked as ignorable; nested exception is com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "country" (class com.mi.info.miim.fs.service.x5.dto.customer.OwnerInfoDTO), not marked as ignorable (5 known properties: "status", "veCode", "veComName", "veComNameEn", "veComShortName"])
 at [Source: (PushbackInputStream); line: 1, column: 112] (through reference chain: com.mi.info.comb.common.x5protocol.core.dto.X5Response["body"]->com.mi.info.miim.fs.service.x5.dto.customer.OwnerPageDTO["records"]->java.util.ArrayList[0]->com.mi.info.miim.fs.service.x5.dto.customer.OwnerInfoDTO["country"])

从下面这行错误信息大致可以看出，有个字段country没找到，导致报错了

ested exception is com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "country" (class com.mi.info.miim.fs.service.x5.dto.customer.OwnerInfoDTO)

为啥折腾了很久呢，用的公司的一个框架，看不到请求之后的response中的内容，后来尝试增加了配置，配置主要是用于：json转对象的时候，如果字段找不到，就不赋值，这样不存在的字段直接跳过就好了。配置如下：

package com.*;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Configuration
public class MvcConfig implements WebMvcConfigurer {

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(mappingJackson2HttpMessageConverter());
    }

    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        converter.setObjectMapper(objectMapper);
        return converter;
    }

}

问题得到解决，记录一下。