{"record":{"id":"65c69a50400147d0","repo":"flipped-aurora/gin-vue-admin","slug":"userrequirement-65c69a","errorCode":null,"errorMessage":"参数错误：userRequirement 必须是非空字符串","messagePattern":"参数错误：userRequirement 必须是非空字符串","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"server/mcp/requirement_analyzer.go","lineNumber":66,"sourceCode":"- 需要专业的数据库设计建议\n- 想要快速搭建生产级业务系统\n\n** 推荐工作流：**\n requirement_analyzer → gva_analyze → gva_execute → 其他辅助工具\n \n `),\n\t\tmcp.WithString(\"userRequirement\",\n\t\t\tmcp.Required(),\n\t\t\tmcp.Description(\"用户的需求描述，支持自然语言，如：'我要做一个猫舍管理系统，用来录入猫的信息，并且记录每只猫每天的活动信息'\"),\n\t\t),\n\t)\n}\n\n// Handle 处理工具调用\nfunc (t *RequirementAnalyzer) Handle(ctx context.Context, request mcp.CallToolRequest) (*mcp.CallToolResult, error) {\n\tuserRequirement, ok := request.GetArguments()[\"userRequirement\"].(string)\n\tif !ok || userRequirement == \"\" {\n\t\treturn nil, errors.New(\"参数错误：userRequirement 必须是非空字符串\")\n\t}\n\n\t// 分析用户需求\n\tanalysisResponse, err := t.analyzeRequirement(userRequirement)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"需求分析失败: %v\", err)\n\t}\n\n\t// 序列化响应\n\treturn textResultWithJSON(\"\", analysisResponse)\n}\n\n// analyzeRequirement 分析用户需求 - 专注于AI需求传递\nfunc (t *RequirementAnalyzer) analyzeRequirement(userRequirement string) (*RequirementAnalysisResponse, error) {\n\t// 生成AI提示词 - 这是唯一功能\n\taiPrompt := t.generateAIPrompt(userRequirement)\n\n\treturn &RequirementAnalysisResponse{","sourceCodeStart":48,"sourceCodeEnd":84,"githubUrl":"https://github.com/flipped-aurora/gin-vue-admin/blob/3136500ef380842b0eb6c4daa87c3f8a47fcf9e0/server/mcp/requirement_analyzer.go#L48-L84","documentation":"RequirementAnalyzer.Handle requires a 'userRequirement' argument of type string that is non-empty. The error is thrown when the argument is missing, is not a string, or is the empty string, because the tool cannot perform requirement analysis without the requirement text.","triggerScenarios":"Calling the MCP tool without 'userRequirement', with a non-string value (number/object/null), or with \"\".","commonSituations":"LLM agent omitted the required argument; client serialized a JSON null; user submitted an empty prompt/requirement form; calling code asserted a nil interface to string.","solutions":["Provide a non-empty 'userRequirement' string in the tool request arguments","Validate client-side: trim the string and check for empty before calling","Ensure the caller's serializer emits the argument as a JSON string, not null or number"],"exampleFix":"// before\nrequest.GetArguments()[\"userRequirement\"] = nil\n// after\nrequest.GetArguments()[\"userRequirement\"] = \"实现用户登录功能，支持手机号验证码\"","handlingStrategy":"validation","validationCode":"const ur = args[\"userRequirement\"]\nif (typeof ur !== \"string\" || ur.trim() === \"\") {\n  throw new Error(\"userRequirement 必须是非空字符串\")\n}","typeGuard":"function isNonEmptyString(v: unknown): v is string {\n  return typeof v === \"string\" && v.trim().length > 0\n}","tryCatchPattern":"try {\n  await callTool(\"requirement_analyzer\", { userRequirement })\n} catch (e) {\n  if (String(e.message).includes(\"userRequirement\")) {\n    // 修正参数并重试\n  }\n  throw e\n}","preventionTips":["Always trim and check user-provided text for emptiness before calling","Define required parameters in a client-side schema validation","Validate LLM tool-call arguments before dispatching to the API"],"tags":["mcp","validation","missing-parameter"],"backgroundTag":"missing-required-parameter","analyzedSha":"3136500ef380842b0eb6c4daa87c3f8a47fcf9e0","analyzedAt":"2026-08-31T13:50:02.721Z","schemaVersion":2},"datasetVersion":"2026-08-31T19:17:28.585Z"}