错误“cannot deserialize instance of java.lang.String out of START_OBJECT token”通常出现在使用Jackson或类似的JSON库进行JSON反序列化时。这个错误表明JSON解析器期望从一个JSON对象(即START_OBJECT标记开始)中获取一个字符串(java.lang.String),但这在JSON数据结构中是不可能的,因为字符串是以双引号括起来的文...
具体表现为出现 "Cannot deserialize instance ofjava.lang.Stringout of START_OBJECT token" 错误。经过仔细研究和调试,发现问题的根源在于之前使用的 fastjson 转换库被替换为 jackson 后无法正确读取数据。 针对这个问题,我们需要做一些调整和更改。首先,让我们来看一下相关的代码内容: 代码语言:javascript 复制 /*...
结果复现: JSON parse error: Cannot deserialize instance of `java.lang.String` out of START_ARRAY token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of START_ARRAY token at [Source: (PushbackInputStream); l...
Could not read document: Cannot deserialize instance of `java.lang.String` out of START_ARRAY token 1. 最开始的时候是这样写的 ResponseEntity<String> response = restTemplate.getForEntity(url, String.class); 1. 后来改成这样就好了 ResponseEntity<JSONObject> response = restTemplate.getForEntity(url,...
前端请求进入后端控制器报错【Cannot deserialize instance of `java.lang.String` out of START_OBJECT token】,从错误信息上看是json解析错误,对比下前端请求发送内容和后端控制器接收参数即可发现问题。 前端发送内容: api_save(JSON.stringify({ po:this.form ...
feign远程调用出现问题 WXWorkCapture_16987422535658.png 最后找到原因是传入的参数有问题,传入的list的大小为0导致的 报错日志: 2023-10-3116:51:43.376DEBUG25232---[nio-9101-exec-3]c.s.e.n.auth.config.ThreadContextAspect:请求未携带系统编码,请求url:/powerNet/screen/getPowerManageListData2023-10-3116:...
Cannot deserialize instance ofjava.lang.Stringout of START_OBJECT token at [Source: (sun.net.www.protocol.http.HttpURLConnection$HttpInputStream); line: 1, column: 10] (through reference chain: java.util.LinkedHashMap["error"]); nested exception is org.springframework.http.converter.HttpMessage...
com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of START_ARRAY token at [Source: (String)"{"thread": {"thread_id": "thread_id", "thread_v2_id": "17873302081828739", "users": [{"pk": 7218769496, "username": "usernameHide...
Jackson错误：Cannotdeserializeinstanceofjava.lan。。。org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: Can not deserialize instance of java.lang.String out of START_OBJECT token at [Source: org.apache.http.conn.EofSensorInputStream@42b0f150; line: 1, column: ...
org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of ...