nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of START_ARRAY token at [Source: (PushbackInputStream); line: 1, column: 9] (through reference chain: cn.zno.Foo[\"name\"])...
instance of java.lang.String out of START_ARRAY token 是一个在JSON解析过程中常见的错误,通常出现在使用Jackson等JSON处理库时。这个错误表明,在解析JSON数据时,解析器期望得到一个字符串(java.lang.String),但实际上遇到了一个数组(START_ARRAY)的开始标记。
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,...
"status": 400, "error": "Bad Request", "exception": "org.springframework.http.converter.HttpMessageNotReadableException", "message": "Could not read document: Can not deserialize instance of java.lang.String out of START_ARRAY token\n at [Source: java.io.PushbackInputStream@6d9b2ba7; li...
最近在代码迁移过程中,遇到了 JSON 解析失败的问题。具体表现为出现 "Cannot deserialize instance of java.lang.String out 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 jac...
未对作废数据内存单元置为null,尽早释放无用对象的引用,使用临时变量时,让引用变量在推出活动域后自动设置为null,暗示垃圾收集器收集;程序避免用String拼接,用StringBuffer,因为每个String会占用内存一块区域;尽量少用静态变量(全局不会回收);不要集中创建对象尤其大对象,可以使用流操作;尽量使用对象池,不再循环中创建...
【已解决】JSON parse error: Cannot deserialize instance of `java.lang.String` out of START_ARRAY token; 上述问题为:前后端联调,类型转换不一致问题 不能将数组等转换为String类型 在我进行前后端联调的时候,发现前端传过来的JSON数据为: { "customAttributeItems": [ ...
Exception in thread "main" java.lang.IllegalArgumentException: Cannot deserialize instance ofjava.lang.Stringout of START_ARRAY token at [Source: UNKNOWN; line: -1, column: -1] (through reference chain: ssf.app.api.entity.groups.GroupsDetailEntity["member_list"]) ...
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...
\Error: Request failed with status code 400: {"errorCode":4001,"message":"Incorrect Request. Invalid JSON input: Cannot deserialize instance ofjava.lang.Stringout of START_ARRAY token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance ofjava....