dtcd27183
2015-10-01 08:24
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已采纳

如何在golang中缓存http.Response?

req, err := http.NewRequest("GET", "http://example.com", nil)
req.AddCookie(&http.Cookie{Name: "c", Value: "ccc"})
resp, err := client.Do(req)

I need to cache resp on disk and keep its type as http.Response after restoring from cache. Any ideas?

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3条回答 默认 最新

  • dth54864 2015-10-01 10:26
    已采纳

    The easiest way is to use httputil.DumpResponse and http.ReadResponse.

    See here for an example. (You have to copy the code onto your local machine and run it there, because the Playground doesn't allow I/O)

    The first dumps your request as-received, optionally also dumping the body, to an in-memory []byte that you can then write to disk. Later you can read the response back from disk (or where ever you stored it) and wrap it in an bufio.Reader, which you pass to http.ReadResponse.

    ReadResponse takes a *http.Request as second parameter that is used as the value for the Request field of the response. If nil is given, the returned Response will have GET request in it's Request field.

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  • duancoubeng5909 2015-10-01 11:56

    ... Or use https://github.com/lox/httpcache. An RFC7234 compliant golang http.Handler for caching HTTP responses

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  • dongwen3437 2019-04-04 15:50

    … Or use https://github.com/gregjones/httpcache. An RFC7234 compliant Golang http.RoundTripper for caching HTTP responses.

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