{"id":240372,"date":"2024-05-13T15:59:49","date_gmt":"2024-05-13T07:59:49","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/240372.html"},"modified":"2024-05-13T15:59:58","modified_gmt":"2024-05-13T07:59:58","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8golang-http%e6%9c%8d%e5%8a%a1%e7%ab%af%e7%a8%8b%e5%ba%8f%e4%b8%ad%e8%af%bb%e5%8f%962%e6%ac%a1request-body","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/240372.html","title":{"rendered":"\u5982\u4f55\u5728golang http\u670d\u52a1\u7aef\u7a0b\u5e8f\u4e2d\u8bfb\u53d62\u6b21Request Body"},"content":{"rendered":"

\"\u5982\u4f55\u5728golang<\/p>\n

\u5728Golang\u4e2d\uff0cHTTP\u670d\u52a1\u7aef\u7a0b\u5e8f\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4ec5\u80fd\u8bfb\u53d6\u4e00\u6b21Request Body\uff0c\u56e0\u4e3a\u5b83\u662f\u4e00\u4e2a\u4e0d\u53ef\u518d\u751f\u7684\u6d41\u6570\u636e\u3002\u4f46\u901a\u8fc7\u4e00\u4e9b\u7279\u6b8a\u7684\u5904\u7406\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u4e8c\u6b21\u8bfb\u53d6Request Body\u7684\u76ee\u7684\u3002\u8fd9\u901a\u5e38\u6d89\u53ca\u5230\u7f13\u51b2\u539f\u59cb\u7684body\u6570\u636e\u3001\u4f7f\u7528\u7f13\u51b2\u4f53\u91cd\u6784\u8bf7\u6c42\uff0c\u4ee5\u53ca\u4f7f\u7528\u4e2d\u95f4\u4ef6\u6216\u5176\u4ed6\u5c01\u88c5\u7684\u673a\u5236\u3002<\/strong><\/p>\n<\/p>\n

\u4e00\u79cd\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u5148\u8bfb\u53d6Body\u5185\u5bb9\u5e76\u5c06\u5176\u5b58\u50a8\u5728bytes.Buffer\u4e2d\uff0c\u7136\u540e\u4f7f\u7528\u8fd9\u4e2a\u7f13\u51b2\u533a\u7684\u526f\u672c\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u7684io.ReadCloser\uff0c\u5c06\u5176\u8d4b\u503c\u7ed9Request\u7684Body\u5c5e\u6027\uff0c\u4ece\u800c\u5b9e\u73b0\u53ef\u4ee5\u591a\u6b21\u8bfb\u53d6\u7684\u6548\u679c\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u901a\u5e38\u4f1a\u5728\u8bf7\u6c42\u5904\u7406\u6d41\u7a0b\u7684\u65e9\u671f\u9636\u6bb5\u5b8c\u6210\uff0c\u786e\u4fdd\u6240\u6709\u5904\u7406\u5668\u548c\u4e2d\u95f4\u4ef6\u90fd\u80fd\u987a\u5229\u8bfb\u53d6Request Body\u5185\u5bb9\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u9884\u5907\u77e5\u8bc6<\/h3>\n<\/p>\n

\u5728\u6df1\u5165\u7814\u7a76\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u4e86\u89e3HTTP\u8bf7\u6c42\u7684Body\u662f\u4e00\u4e2aio.ReadCloser<\/code>\u63a5\u53e3\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u65e2\u53ef\u4ee5\u88ab\u8bfb\u53d6\uff0c\u4e5f\u9700\u8981\u5728\u8bfb\u53d6\u5b8c\u6210\u540e\u5173\u95ed\u3002\u6b64\u5916\uff0c\u5728HTTP\/1.x\u4e2d\uff0c\u8bf7\u6c42\u7684Body\u901a\u5e38\u4e0d\u80fd\u91cd\u65b0\u8bfb\u53d6\uff0c\u56e0\u4e3a\u5b83\u4ee3\u8868\u7684\u662f\u7f51\u7edc\u4e0a\u7684\u4e00\u4e2a\u5e8f\u5217\u5316\u6d41\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u5b9e\u73b0Request Body\u7684\u4e8c\u6b21\u8bfb\u53d6<\/h3>\n<\/p>\n

\u5b9e\u73b0Request Body\u91cd\u8bfb\u9700\u8981\u4e24\u4e2a\u6b65\u9aa4\uff1a\u9996\u5148\u8bfb\u53d6\u5e76\u7f13\u5b58Body\u6570\u636e\uff0c\u7136\u540e\u5c06\u7f13\u5b58\u7684\u6570\u636e\u91cd\u65b0\u8bbe\u7f6e\u56deRequest.Body\u3002\u8fd9\u8981\u6c42\u6211\u4eec\u6269\u5c55http.Request\u7ed3\u6784\u4ee5\u652f\u6301\u8fd9\u4e00\u529f\u80fd\u3002<\/strong><\/p>\n<\/p>\n

\u8bfb\u53d6\u5e76\u7f13\u5b58Body<\/h4>\n<\/p>\n

\u7b2c\u4e00\u6b65\u662f\u5728Handler\u4e2d\u8bfb\u53d6http.Request\u7684Body\u5c5e\u6027\uff0c\u52a1\u5fc5\u8981\u786e\u4fdd\u5728\u8bfb\u53d6\u540e\u6b63\u786e\u5904\u7406\u9519\u8bef\u5e76\u5173\u95edbody\uff1a<\/p>\n<\/p>\n

var buf bytes.Buffer<\/p>\n
body, err := ioutil.ReadAll(r.Body)<\/p>\n
if err != nil {<\/p>\n
    \/\/ \u5904\u7406\u9519\u8bef<\/p>\n
}<\/p>\n
buf.Write(body)<\/p>\n
\/\/ \u786e\u4fdd\u539f\u59cbBody\u5173\u95ed<\/p>\n
if err = r.Body.Close(); err != nil {<\/p>\n
    \/\/ \u5904\u7406\u9519\u8bef<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u91cd\u65b0\u8bbe\u7f6eRequest.Body<\/h4>\n<\/p>\n
\u7b2c\u4e8c\u6b65\u662f\u521b\u5efa\u4e00\u4e2a\u65b0\u7684io.ReadCloser\uff0c\u5c06\u5176\u8bbe\u7f6e\u56de\u8bf7\u6c42\u7684Body\u5c5e\u6027\uff1a<\/p>\n<\/p>\n
\/\/ \u4f7f\u7528bytes.Buffer\u521b\u5efa\u4e00\u4e2a\u65b0\u7684ReadCloser<\/p>\n
r.Body = ioutil.NopCloser(&buf)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528\u4e2d\u95f4\u4ef6\u5b9e\u73b0<\/h3>\n<\/p>\n
\u4e2d\u95f4\u4f53\u662fHTTP\u670d\u52a1\u5668\u4e2d\u5904\u7406\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u5e38\u7528\u7ec4\u4ef6\u3002\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e2d\u95f4\u4ef6\uff0c\u5b83\u5728\u8bf7\u6c42\u5230\u8fbe\u5b9e\u9645\u5904\u7406\u51fd\u6570\u524d\u8bfb\u53d6\u8bf7\u6c42Body\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5728\u8bf7\u6c42\u7684\u4e0a\u4e0b\u6587\u4e2d\uff0c\u4ee5\u4fbf\u4e8e\u540e\u7eed\u5904\u7406\u3002<\/p>\n<\/p>\n
func BodyDumpMiddleware(next http.Handler) http.Handler {<\/p>\n
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {<\/p>\n
        var bodyBytes []byte<\/p>\n
        if r.Body != nil {<\/p>\n
            bodyBytes, _ = ioutil.ReadAll(r.Body)<\/p>\n
        }<\/p>\n
        \/\/ \u5c06Body\u5b58\u50a8\u5230\u4e0a\u4e0b\u6587<\/p>\n
        r = r.WithContext(context.WithValue(r.Context(), "body", bodyBytes))<\/p>\n
        \/\/ \u521b\u5efa\u65b0\u7684ReadCloser\uff0c\u6062\u590dr.Body<\/p>\n
        r.Body = ioutil.NopCloser(bytes.NewBuffer(bodyBytes))<\/p>\n
        next.ServeHTTP(w, r)<\/p>\n
    })<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4f7f\u7528\u4e0a\u8ff0\u4e2d\u95f4\u4ef6\u540e\uff0c\u5728\u5904\u7406\u51fd\u6570\u4e2d\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u83b7\u53d6\u5148\u524d\u8bfb\u53d6\u7684body\uff1a<\/p>\n<\/p>\n
func myHandler(w http.ResponseWriter, r *http.Request) {<\/p>\n
    \/\/ \u4ece\u4e0a\u4e0b\u6587\u4e2d\u63d0\u53d6body<\/p>\n
    body := r.Context().Value("body").([]byte)<\/p>\n
    \/\/ \u5904\u7406\u8bf7\u6c42...<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u6ce8\u610f\u548c\u5c40\u9650<\/h3>\n<\/p>\n
\u76f8\u6bd4\u53ea\u8bfb\u53d6\u4e00\u6b21\uff0c\u4e8c\u6b21\u8bfb\u53d6Request Body\u5e26\u6765\u989d\u5916\u7684\u6027\u80fd\u5f00\u9500\u548c\u590d\u6742\u6027\uff0c\u56e0\u6b64\u5efa\u8bae\u4ec5\u5728\u5fc5\u8981\u65f6\u91c7\u7528\u6b64\u65b9\u6cd5\u3002<\/strong><\/p>\n<\/p>\n
\u5728\u91cd\u8bfbBody\u7684\u64cd\u4f5c\u4e2d\uff0c\u5fc5\u987b\u6ce8\u610f\u4e0d\u8981\u5ffd\u7565\u4efb\u4f55\u53ef\u80fd\u5bfc\u81f4\u7f13\u51b2\u533a\u8bfb\u5199\u9519\u8bef\u3001\u7f51\u7edcI\/O\u9519\u8bef\u6216\u8d44\u6e90\u6cc4\u9732\u7684\u5f02\u5e38\u60c5\u51b5\u3002\u5e76\u4e14\uff0c\u5904\u7406\u5b8c\u8bf7\u6c42\u540e\u8981\u786e\u4fdd\u8bf7\u6c42\u7684Body\u88ab\u6b63\u786e\u5173\u95ed\uff0c\u4ee5\u907f\u514d\u5185\u5b58\u6cc4\u9732\u3002\u5173\u4e8e\u4e8c\u6b21\u8bfb\u53d6\u7684\u64cd\u4f5c\uff0c\u8fd8\u9700\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<\/p>\n