{"record":{"id":"f5d603e4a2289401","repo":"alibaba/spring-ai-alibaba","slug":"error-f5d603","errorCode":null,"errorMessage":"解析默认参数失败: {}","messagePattern":"解析默认参数失败: (.+?)","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"spring-ai-alibaba-admin/spring-ai-alibaba-admin-server-start/src/main/java/com/alibaba/cloud/ai/studio/admin/service/client/ChatClientFactoryDelegate.java","lineNumber":140,"sourceCode":"     *\n     * @param userParameters 用户传入的参数\n     * @return 合并后的参数\n     */\n    private Map<String, Object> mergeParameters(ModelConfigDO config, Map<String, Object> userParameters) {\n        Map<String, Object> mergedParameters = new HashMap<>();\n        \n        // 首先添加默认参数\n        if (StringUtils.hasText(config.getDefaultParameters())) {\n            try {\n                @SuppressWarnings(\"unchecked\")\n                Map<String, Object> defaultParams = objectMapper.readValue(\n                        config.getDefaultParameters(),\n                        Map.class\n                );\n                mergedParameters.putAll(defaultParams);\n                log.debug(\"加载默认参数: {}\", defaultParams);\n            } catch (Exception e) {\n                log.warn(\"解析默认参数失败: {}\", config.getDefaultParameters(), e);\n            }\n        }\n        \n        // 然后添加用户参数（覆盖默认参数）\n        if (userParameters != null) {\n            mergedParameters.putAll(userParameters);\n            log.debug(\"用户参数: {}\", userParameters);\n        }\n        \n        log.debug(\"合并后的参数: {}\", mergedParameters);\n        return mergedParameters;\n    }\n}\n","sourceCodeStart":122,"sourceCodeEnd":154,"githubUrl":"https://github.com/alibaba/spring-ai-alibaba/blob/f82da0b50f35744c13968191be2b1cd2452ef550/spring-ai-alibaba-admin/spring-ai-alibaba-admin-server-start/src/main/java/com/alibaba/cloud/ai/studio/admin/service/client/ChatClientFactoryDelegate.java#L122-L154","documentation":"ChatClientFactoryDelegate.mergeParameters parses the model config's defaultParameters JSON string into a Map and merges it under the caller-supplied user parameters. If the JSON cannot be parsed into Map.class, it warns with the raw string and continues with only the user parameters.","triggerScenarios":"mergedParameters -> mergeParameters with config.getDefaultParameters() that is malformed JSON, a JSON array/string/scalar instead of an object, or null-garbage from a prior save.","commonSituations":"Admin UI saving default params with single quotes or trailing commas; another client writing a JSON array; encoding corruption; hand-edited database rows.","solutions":["Fix defaultParameters in the model config to be a valid JSON object, e.g. {\"temperature\":0.7}","Validate the JSON in the UI/API before saving model configs","Make mergeParameters throw or return an error for invalid JSON instead of silently ignoring defaults, so bad configs surface immediately"],"exampleFix":"// before\ndefaultParameters: \"{'temperature':0.7}\"\n// after\ndefaultParameters: \"{\\\"temperature\\\":0.7}\"","handlingStrategy":"validation","validationCode":"boolean isValidJsonObject(String s) {\n    if (s == null || s.isBlank()) return true; // optional field\n    try { new ObjectMapper().readValue(s, Map.class); return true; } catch (Exception e) { return false; }\n}\n// reject model configs whose defaultParameters fails isValidJsonObject","typeGuard":null,"tryCatchPattern":"try { client = delegate.createChatClient(config); }\ncatch (Exception e) { log.warn(\"falling back to params without defaults: {}\", e.getMessage()); }","preventionTips":["Use a JSON editor with validation in the admin UI for defaultParameters","Always save default params as JSON objects, never arrays or quoted strings","Round-trip test: parse what you save before persisting"],"tags":["json","configuration","model-parameters","parsing"],"backgroundTag":"json-parse-error","analyzedSha":"f82da0b50f35744c13968191be2b1cd2452ef550","analyzedAt":"2026-09-09T15:32:42.421Z","contentChangedAt":"2026-09-09T15:32:42.421Z","schemaVersion":2},"datasetVersion":"2026-09-14T11:17:12.474Z"}