{"record":{"id":"cc93691b798e6c5e","repo":"fish2018/pansou","slug":"s-w-cc9369","errorCode":null,"errorMessage":"[%s] 创建内容请求失败: %w","messagePattern":"\\[(.+?)\\] 创建内容请求失败: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"plugin/jsnoteclub/jsnoteclub.go","lineNumber":278,"sourceCode":"\n\treturn match[1], nil\n}\n\nfunc (p *JsNoteClubPlugin) fetchPosts(client *http.Client, dataKey string) ([]ghostPost, error) {\n\tparams := url.Values{}\n\tparams.Set(\"key\", dataKey)\n\tparams.Set(\"limit\", \"10000\")\n\tparams.Set(\"fields\", \"id,slug,title,excerpt,url,updated_at,visibility\")\n\tparams.Set(\"order\", \"updated_at DESC\")\n\n\treqURL := fmt.Sprintf(\"https://jsnoteclub.com/ghost/api/content/posts/?%s\", params.Encode())\n\n\tctx, cancel := context.WithTimeout(context.Background(), requestTimeout)\n\tdefer cancel()\n\n\treq, err := http.NewRequestWithContext(ctx, http.MethodGet, reqURL, nil)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"[%s] 创建内容请求失败: %w\", p.Name(), err)\n\t}\n\tsetAPIHeaders(req, \"https://jsnoteclub.com/\")\n\n\tresp, err := p.doRequestWithRetry(req, client, maxRequestRetries)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"[%s] 获取内容失败: %w\", p.Name(), err)\n\t}\n\tdefer resp.Body.Close()\n\n\tif resp.StatusCode != http.StatusOK {\n\t\treturn nil, fmt.Errorf(\"[%s] 内容接口返回状态码: %d\", p.Name(), resp.StatusCode)\n\t}\n\n\tvar payload ghostPostsResponse\n\tif err := json.NewDecoder(resp.Body).Decode(&payload); err != nil {\n\t\treturn nil, fmt.Errorf(\"[%s] 解析内容数据失败: %w\", p.Name(), err)\n\t}\n","sourceCodeStart":260,"sourceCodeEnd":296,"githubUrl":"https://github.com/fish2018/pansou/blob/beaa56133755a548ebc51b090b3816e2ae044aa6/plugin/jsnoteclub/jsnoteclub.go#L260-L296","documentation":"This error is returned by fetchPosts in the jsnoteclub plugin when http.NewRequestWithContext fails to construct the GET request for the Ghost Content API (https://jsnoteclub.com/ghost/api/content/posts/). With a constant, hard-coded URL and no request body, this essentially only fails on invalid URL parsing or a nil context, making it a near-impossible internal failure that surfaces wrapped with the plugin name. It aborts the search before any network call is made.","triggerScenarios":"http.NewRequestWithContext returns an error while building the posts API request — practically only if the constructed URL (base URL + url.Values query string) fails url.Parse, or the context is nil. In this code path the URL is constant and the context is always valid, so it is effectively unreachable in normal operation.","commonSituations":"Developers hit this when forking/modifying the plugin: changing the base URL to a malformed value, injecting user-supplied data into the URL string without escaping, or refactoring the context handling so a nil context is passed.","solutions":["Check the URL string being passed to http.NewRequestWithContext — print/log it and validate with url.Parse; fix any malformed characters (spaces, unescaped symbols).","Verify the context passed in is non-nil; use context.WithTimeout(context.Background(), ...) as the source does.","Revert any local modifications to the hard-coded posts URL constant in jsnoteclub.go.","Since the error wraps the original err with %w, inspect errors.Unwrap(err) to see the exact url.Error cause."],"exampleFix":"// before\nreqURL := fmt.Sprintf(\"https://jsnoteclub.com/ghost/api/content/posts/?%s\", params.Encode())\nreq, err := http.NewRequestWithContext(ctx, http.MethodGet, reqURL, nil)\n// after\nreqURL := fmt.Sprintf(\"https://jsnoteclub.com/ghost/api/content/posts/?%s\", params.Encode())\nif _, perr := url.Parse(reqURL); perr != nil {\n    return nil, fmt.Errorf(\"invalid posts URL %q: %w\", reqURL, perr)\n}\nreq, err := http.NewRequestWithContext(ctx, http.MethodGet, reqURL, nil)","handlingStrategy":"try-catch","validationCode":"// Go: validate the URL before building the request\nif _, err := url.Parse(\"https://jsnoteclub.com/ghost/api/content/posts/\"); err != nil {\n    return fmt.Errorf(\"invalid posts URL: %w\", err)\n}\nif ctx == nil {\n    return fmt.Errorf(\"context must not be nil\")\n}","typeGuard":null,"tryCatchPattern":"posts, err := p.fetchPosts(client, dataKey)\nif err != nil {\n    log.Printf(\"jsnoteclub fetchPosts failed: %v\", err)\n    return nil, err\n}","preventionTips":["Never build URLs by string concatenation with unescaped user data; always use url.Values.Encode() for query strings.","Always pass a non-nil context (context.WithTimeout(context.Background(), ...)) to NewRequestWithContext.","When forking the plugin, validate any changed base URL with url.Parse in a unit test."],"tags":["http","request-construction","go","url"],"backgroundTag":"invalid-url","analyzedSha":"beaa56133755a548ebc51b090b3816e2ae044aa6","analyzedAt":"2026-09-07T00:31:18.025Z","contentChangedAt":"2026-09-07T00:31:18.025Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}