go語言http接口示例

 

go語言http接口示例

下面是一個獲取隨機數接口。

主要為獲取http請求參數，返回json數據。

 

// keymgrapiHttp project main.go
package main

import (
    "encoding/json"
    "fmt"
    "io"
    "io/ioutil"
    "log"
    "net/http"
    "strconv"
    "yuzyong/keymgrapi"
)

type Ret struct {
    Code       int
    Outdata    []byte
    OutdataLen int
    Param      string
    Msg        string //msgtype??
    // Data  []Data
}

var addr string = "192.168.2.148:9166"
var count int = 0

func main() {
    fmt.Println("Hello World!")
    httpStart()
}

func csp_random_Handler(w http.ResponseWriter, r *http.Request) {
    //打印請求主機地址
    fmt.Println(r.Host)
    //打印請求頭信息
    fmt.Printf("header content:[%v]\n", r.Header)

    //獲取 post 請求中 form 里邊的數據
    // fmt.Printf("form content:[%s, %s]\n", r.PostFormValue("username"), r.PostFormValue("passwd"))
    // fmt.Printf("form content:[%s, %s]\n", r.PostFormValue("len"), r.PostFormValue("passwd"))

    len := r.PostFormValue("randDataLen")

    len_int, err := strconv.Atoi(len)
    var randData = make([]byte, len_int)
    // result, _, _ := YM_GenRandom(pKmpHandle, len_int, uintptr(unsafe.Pointer(&randData[0])))

    conn, err := keymgrapi.YM_GetConnect(addr)
    if err != nil {
        log.Printf("dial error: %s", err)
        return
    }
    defer keymgrapi.YM_DisConnect(conn)

    //正式開始調用接口

    //隨機數
    randData, _, status := keymgrapi.YM_GenRandom(conn, len_int)
    if status == 0 {
        count += 1
        fmt.Printf("[%d] YM_GenRandom success. \n", count)
    } else {
        count += 1
        fmt.Printf("[%d] YM_GenRandom error. status=%d \n", count, status)
        fmt.Printf("[%d] YM_GenRandom failed. randData: %v\n", count, randData)
    }

    fmt.Println("randData: ", randData)

    //讀取請求體信息
    // bodyContent, err := ioutil.ReadAll(r.Body)
    // if err != nil && err != io.EOF {
    //     fmt.Printf("read body content failed, err:[%s]\n", err.Error())
    //     return
    // }
    // fmt.Printf("body content:[%s]\n", string(bodyContent))

    //響應
    data := make(map[string]interface{})
    data["code"] = status
    data["randData"] = randData
    jsonData, _ := json.Marshal(data)
    io.WriteString(w, string(jsonData))
    // fmt.Fprintf(w, string(jsonData))

}

func IndexHandler(w http.ResponseWriter, r *http.Request) {
    //打印請求主機地址
    fmt.Println(r.Host)
    //打印請求頭信息
    fmt.Printf("header content:[%v]\n", r.Header)

    //獲取 post 請求中 form 里邊的數據
    fmt.Printf("form content:[%s, %s]\n", r.PostFormValue("username"), r.PostFormValue("passwd"))

    //讀取請求體信息
    bodyContent, err := ioutil.ReadAll(r.Body)
    if err != nil && err != io.EOF {
        fmt.Printf("read body content failed, err:[%s]\n", err.Error())
        return
    }
    fmt.Printf("body content:[%s]\n", string(bodyContent))

    //返回響應內容
    fmt.Fprintf(w, "hello world ~")
}

func httpStart() {
    http.HandleFunc("/index", IndexHandler)
    // http.HandleFunc("/csp/msgDigest", csp_msgDigest_Handler)
    http.HandleFunc("/csp/random", csp_random_Handler)
    // http.HandleFunc("/csp/getsm4key", csp_getsm4key_handler)
    // http.HandleFunc("/csp/sm4ecbEnc", csp_sm4ecbEnc_handler)
    // http.HandleFunc("/csp/sm4ecbDec", csp_sm4ecbDec_handler)
    // http.HandleFunc("/csp/sm4cbcEnc", csp_sm4cbcEnc_handler)
    // http.HandleFunc("/csp/sm4cbcDec", csp_sm4cbcDec_handler)
    // http.HandleFunc("/csp/genMac", csp_genMac_handler)
    // http.HandleFunc("/csp/verifyMac", csp_verifyMac_handler)
    // http.HandleFunc("/csp/genSM2KeyPair", csp_genSM2KeyPair_handler)
    // http.HandleFunc("/csp/sm2PubKeyEnc", csp_sm2PubKeyEnc_handler)
    // http.HandleFunc("/csp/sm2PriKeyDec", csp_sm2PriKeyDec_handler)
    // http.HandleFunc("/csp/sm2Sign", csp_sm2Sign_handler)
    // http.HandleFunc("/csp/sm2Verify", csp_sm2Verify_handler)
    // http.HandleFunc("/csp/getSM2PubKey", csp_getSM2PubKey_handler)
    http.ListenAndServe("0.0.0.0:8000", nil)

}

 

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