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| author | Jason Buberel <[email protected]> | 2015-05-25 06:57:43 -0700 |
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| committer | Jason Buberel <[email protected]> | 2015-05-25 14:24:11 -0700 |
| commit | f9f629a1d082960e5d1747f33c2b378612615fea (patch) | |
| tree | 21d5e6305da1ecf44dadd9ab2e1c2bb6e12f4aea | |
| parent | a6eef0c3a9a158ce0fc790d13fadb69186a36cb5 (diff) | |
Provide an example on how to debug a web app.
Update README.md
Removing extra line.
| -rw-r--r-- | README.md | 27 |
1 files changed, 27 insertions, 0 deletions
@@ -65,6 +65,33 @@ spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2) spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4) ``` +## Debugging a Web Application Example + +Here is an example of how you can use `spew.Sdump()` to help debug a web application. Please be sure to wrap your output using the `html.EscapeString()` function for safety reasons. You should also only use this debugging technique in a development environment, never in production. + +```Go +package main + +import ( + "fmt" + "html" + "net/http" + + "github.com/davecgh/go-spew/spew" +) + +func handler(w http.ResponseWriter, r *http.Request) { + w.Header().Set("Content-Type", "text/html") + fmt.Fprintf(w, "Hi there, %s!", r.URL.Path[1:]) + fmt.Fprintf(w, "<!--\n" + html.EscapeString(spew.Sdump(w)) + "\n-->") +} + +func main() { + http.HandleFunc("/", handler) + http.ListenAndServe(":8080", nil) +} +``` + ## Sample Dump Output ``` |
