少了 jackson-annotation https://blog.csdn.net/qq_36497454/article/details/80461676…

练习:将值是null的数据删除掉(剔除):com.fasterxml.jackson.annotation.JsonInclude;包 例如,有数据是null,不想展示 { "statusCode": 0, "message": "返回成功", "data": [{ "orderId": "1542785381425923730", "buyerName": &quo…

项目中,父层是Gene.java[基因实体]  子层是Corlib.java[文集库实体],一种基因对用多个文集库文章 但是在查询文集库这个实体的时候报错:[com.fasterxml.jackson.databind.JsonMappingException] com.fasterxml.jackson.databind.JsonMappingException: No serializer found for class org.hibernate.proxy.pojo.javassist.…

详细信息   https://www.cnblogs.com/xuwenjin/p/8832522.html 解决办法: 在实体类上面加上注解 @JsonIgnoreProperties(value = { "hibernateLazyInitializer", "handler" }) package cn.edu.aynu.Bean; import com.fasterxml.jackson.annotation.JsonIgnoreProperties; im…

代码程序: @PostMapping("selectById") @ResponseBody public Result selectById(@RequestBody int id) { Result result =new Result(); List<User> list = userService.selectById(id); if(list.size()==1){ result.setCode("000"); result.setMsg(&q…

接口测试中用postman测试返回是正常的,但是使用其他人去调用就出错了,找了半天,才想起来使用了nginx,用于端口的代理转发.然后根据错误信息发现json格式的某个字段为null,结合日志中的报文: {"MSG":"查询成功","OPERATE_TIME":"1568170376","STATUS":"0000","state":null} 发现state对应的值…

异常信息如下: JSON parse error: Can not deserialize instance of java.lang.String out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT token…

在hibernate spring springMVC整合的时候出现下面的情况: WARNING: Exception encountered during context initialization - cancelling refresh attempt org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet…

非常感谢: 谭卓博客 springmvc4 json springmvc4 集成hibernate4 出现 NoClassDefFoundError:com/fasterxml/jackson/core/JsonProcessingException springmvc4 JSON 的配置发生了变化: <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"…

1. Overview In this article, we’ll do a deep dive into Jackson Annotations. We’ll see how to use the existing annotations, how to create custom ones and finally – how to disable them. Further reading: More Jackson Annotations This article covers some…