python使用request发送post请求,显示{"code":500,"msg":"Invalid JSON input: Cannot construct instance of `com.qianya.dto.api.ApiQueuesAddParm` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('{\"inspectionNo\": \"77617\", \"name\": \"\\u5184\\u53bd\", \"sex\": 1, \"age\": 65, \"type\": 4, \"checkItem\": 0, \"isAddProject\": 0, \"departmentsDataList\": [{\"departmentsId\": 1, \"departmentsProjectNumber\": \"1,2,3\", \"isBeforeDinner\": 0}, {\"departmentsId\": 2, \"departmentsProjectNumber\": \"4,5,6\", \"isBeforeDinner\": 0}, {\"departmentsId\": 3, \"departmentsProjectNumber\": \"7,8,9\", \"isBeforeDinner\": 0}]}'); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `com.qianya.dto.api.ApiQueuesAddParm` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('{\"inspectionNo\": \"77617\", \"name\": \"\\u5184\\u53bd\", \"sex\": 1, \"age\": 65, \"type\": 4, \"checkItem\": 0, \"isAddProject\": 0, \"departmentsDataList\": [{\"departmentsId\": 1, \"departmentsProjectNumber\": \"1,2,3\", \"isBeforeDinner\": 0}, {\"departmentsId\": 2, \"departmentsProjectNumber\": \"4,5,6\", \"isBeforeDinner\": 0}, {\"departmentsId\": 3, \"departmentsProjectNumber\": \"7,8,9\", \"isBeforeDinner\": 0}]}')\n at [Source: (PushbackInputStream); line: 1, column: 1]","data":null}是什么原因
时间: 2023-07-06 07:37:11 浏览: 148
python爬虫使用requests发送post请求示例详解
这个错误通常意味着您向服务器发送了一个POST请求,但请求体中包含的JSON数据格式不正确。服务器无法正确解析您发送的JSON数据,因此它无法创建请求参数对象。具体来说,服务器在错误消息中指出了问题所在:请求体中的JSON数据缺少一个适当的构造函数或工厂方法,以便服务器可以将其反序列化为请求参数对象。
要解决这个问题,您需要检查请求体中的JSON数据格式是否正确,并确保它们与服务器期望的JSON格式匹配。您还可以检查请求参数对象的构造函数或工厂方法是否正确实现。如果您无法解决这个问题,您可以考虑联系服务器开发人员以获取更多帮助。
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