{"record":{"id":"07c4c195fef84f5c","repo":"flipped-aurora/gin-vue-admin","slug":"go-mod-module","errorCode":null,"errorMessage":"go.mod 中未找到 module 定义","messagePattern":"go\\.mod 中未找到 module 定义","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"server/cmd/mcp/config.go","lineNumber":186,"sourceCode":"\tfile, err := os.Open(goModPath)\n\tif err != nil {\n\t\treturn \"\", err\n\t}\n\tdefer file.Close()\n\n\tscanner := bufio.NewScanner(file)\n\tfor scanner.Scan() {\n\t\tline := strings.TrimSpace(scanner.Text())\n\t\tif strings.HasPrefix(line, \"module \") {\n\t\t\treturn strings.TrimSpace(strings.TrimPrefix(line, \"module \")), nil\n\t\t}\n\t}\n\n\tif err := scanner.Err(); err != nil {\n\t\treturn \"\", err\n\t}\n\n\treturn \"\", errors.New(\"go.mod 中未找到 module 定义\")\n}\n\nfunc isDir(path string) bool {\n\tinfo, err := os.Stat(path)\n\treturn err == nil && info.IsDir()\n}\n","sourceCodeStart":168,"sourceCodeEnd":193,"githubUrl":"https://github.com/flipped-aurora/gin-vue-admin/blob/3136500ef380842b0eb6c4daa87c3f8a47fcf9e0/server/cmd/mcp/config.go#L168-L193","documentation":"detectGoModule scans a go.mod file line by line for the 'module <name>' directive. If the file exists and is fully read but no module line is found, it returns this error, which surfaces from applyStandaloneDefaults.","triggerScenarios":"A go.mod was found at the detected root, but it contains no 'module x/y' declaration (empty file, malformed, or commented out).","commonSituations":"Hand-crafted or truncated go.mod; a file named go.mod used as a marker without valid module syntax; tooling that stripped the module line; reading the wrong go.mod in a nested dir.","solutions":["Add or restore the module directive at the top of go.mod (e.g. `module github.com/user/repo/server`)","Regenerate go.mod with `go mod init <module-path>` if it was malformed","Verify the file being parsed is the real go.mod at the intended project root"],"exampleFix":"// before (go.mod)\nrequire (\n  github.com/spf13/viper v1.18.2\n)\n// after (go.mod)\nmodule github.com/flipped-aurora/gin-vue-admin/server\n\ngo 1.20\n\nrequire (\n  github.com/spf13/viper v1.18.2\n)","handlingStrategy":"validation","validationCode":"// validate go.mod before calling detectGoModule\nfunc validateGoMod(path string) error {\n  data, err := os.ReadFile(path)\n  if err != nil { return err }\n  if !bytes.Contains(data, []byte(\"\\nmodule \")) && !bytes.HasPrefix(data, []byte(\"module \")) {\n    return errors.New(path + \" has no module directive\")\n  }\n  return nil\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Never hand-edit the module line out of go.mod; run `go mod tidy` after changes","Commit a valid go.mod so root detection has a real module to parse","Guard detection with a regex that distinguishes 'module x' from commented lines"],"tags":["go","gomod","config","mcp"],"backgroundTag":"gomod-module-missing","analyzedSha":"3136500ef380842b0eb6c4daa87c3f8a47fcf9e0","analyzedAt":"2026-08-31T13:50:02.721Z","schemaVersion":2},"datasetVersion":"2026-08-31T19:17:28.585Z"}