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多模态请求发送前抛异常 com.alibaba.dashscope.exception.ApiException #250
Description
请求信息
messages
[
{
"role":"user",
"content":[
{"text":"大约 14KB 的提示词"},
{
"video":[
"PNG 图片的 Base64 编码结果",
// 共 6 张，每张大约 200K
],
"fps":0.1
}
]
}
]其他参数
ResponseFormatTypeTemperatureTopPSeed
报错堆栈 (2.22.26)
com.alibaba.dashscope.exception.ApiException: {"statusCode":-1,"message":"UnsupportedOperationException: null","code":"network error","isJson":false}; status body:{"statusCode":-1,"message":"UnsupportedOperationException: null","code":"network error","isJson":false} | at com.google.gson.internal.bind.JsonTreeWriter.jsonValue(JsonTreeWriter.java:241) | at com.alibaba.dashscope.common.MultiModalMessageAdapter.writeValue(MultiModalMessageAdapter.java:51) | at com.alibaba.dashscope.common.MultiModalMessageAdapter.writeMapObject(MultiModalMessageAdapter.java:31) | at com.alibaba.dashscope.common.MultiModalMessageAdapter.write(MultiModalMessageAdapter.java:226) | at com.alibaba.dashscope.common.MultiModalMessageAdapter.write(MultiModalMessageAdapter.java:25) | at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:73) | at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:100) | at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.write(CollectionTypeAdapterFactory.java:64) | at com.google.gson.Gson.toJson(Gson.java:944) | at com.google.gson.Gson.toJsonTree(Gson.java:802) | at com.google.gson.Gson.toJsonTree(Gson.java:779) | at com.alibaba.dashscope.utils.JsonUtils.toJsonArray(JsonUtils.java:80) | at com.alibaba.dashscope.aigc.multimodalconversation.MultiModalConversationParam.getInput(MultiModalConversationParam.java:203) | at com.alibaba.dashscope.aigc.multimodalconversation.MultiModalConversationParam.getHttpBody(MultiModalConversationParam.java:192) | at com.alibaba.dashscope.protocol.HalfDuplexRequest.getHttpRequest(HalfDuplexRequest.java:124) | at com.alibaba.dashscope.protocol.okhttp.OkHttpHttpClient.send(OkHttpHttpClient.java:242) | at com.alibaba.dashscope.api.SynchronizeHalfDuplexApi.call(SynchronizeHalfDuplexApi.java:58) | at com.alibaba.dashscope.aigc.multimodalconversation.MultiModalConversation.call(MultiModalConversation.java:107) | at
...
版本信息
2.22.26, 2.22.28 有问题
2.21.10 无问题
Activity
lzsweb commentedon Aug 7, 2026
感谢反馈！问题已定位并修复，将随下一个版本发布。
原因：v2.22.25 引入的改动（#244）在
MultiModalMessageAdapter序列化BigDecimal/BigInteger类型的值（如 content 中的fps）时使用了JsonWriter.jsonValue()，而多模态请求构建 body 时走的是Gson.toJsonTree()（内部为JsonTreeWriter），该方法在JsonTreeWriter上会抛出UnsupportedOperationException，导致请求发送前报错。修复方式：改用
JsonTreeWriter兼容的value(Number)写入数字，并对兜底分支做同样处理。感谢 @newvoid7 的详细报告（含版本对比信息），对快速定位帮助很大！
fix(multimodal): fix UnsupportedOperationException for BigDecimal/Big…