标准的 Openai ChatCompletion JSON 参数字符串没法转成 ChatCompletionRequest #52
Description
看异常应该是有些字段的序列化方式没设置对。
重现测试用例：
public class ChatCompletionExample {
private static final String BASE_URL = "https://api.openai.com/v1/";
private static final String API_KEY = "sk-1234567890";
private static final ObjectMapper objectMapper = new ObjectMapper();
public static void main(String[] args) throws JsonProcessingException {
String json = "{\"model\":\"gpt-4o-mini\",\"max_tokens\":150,\"response_format\":{\"type\":\"json_object\"},\"messages\":[{\"role\":\"system\",\"content\":\"You are a helpful assistant and you should reply in JSON format.\"},{\"role\":\"user\",\"content\":\"What is your name?\"}]}";
ChatCompletionRequest completionRequest = objectMapper.readValue(json, ChatCompletionRequest.class);
OpenAiService openAiService = new OpenAiService(API_KEY, BASE_URL);
ChatCompletionResult completionResult = openAiService.createChatCompletion(completionRequest);
System.out.println(completionResult);
}
}
报了如下异常：
Exception in thread "main" com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `com.theokanning.openai.completion.chat.ChatResponseFormat` (although at least one Creator exists): cannot deserialize from Object value (no delegate- or property-based Creator)
at [Source: (String)"{"model":"gpt-4o-mini","max_tokens":150,"response_format":{"type":"json_object"},"messages":[{"role":"system","content":"You are a helpful assistant and you should reply in JSON format."},{"role":"user","content":"What is your name?"}]}"; line: 1, column: 60] (through reference chain: com.theokanning.openai.completion.chat.ChatCompletionRequest["response_format"])
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63)
at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1733)
at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1358)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1420)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:352)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:185)
at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:314)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:177)
at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:323)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4730)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3677)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3645)
at example.ChatCompletionExample.main(ChatCompletionExample.java:21)