使用POSTMAN测试Golang微服务

jum4pzuy 于 2023-03-18 发布在 Postman

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我试着用postman作为客户端来测试我的Golang微服务，但是我不能正确地管理响应。当前的情况是我有一个代理服务，它与一个单独的身份验证服务通信来验证用户，如下面的代码所示。

func Authenticate(w http.ResponseWriter,  a AuthPayload){
    //////Create a json to send to the auth microservice///////
    //Marshal the request struct into a json
    jsonData,_:=json.Marshal(a)
    log.Printf("got jsonm data as %s",jsonData)

    //////Call the auth microservice///////
    //http://{name of the authentication service in docker-compose}/{name of url we want from the auth service}
    request,err := http.NewRequest("POST", "http://authentication-service:8081/authenticateuser",bytes.NewBuffer(jsonData))
    if err!=nil{
        log.Printf("Broker service couldnt connect to the auth service, %s",err)
        return

    }

    client:=&http.Client{}
    response, err := client.Do(request)
    if err!=nil{
        log.Printf("Broker service client error: , %s",err)
        return

    }
    defer response.Body.Close()

    //////Make sure to get back the correct status code///////
    if response.StatusCode == http.StatusUnauthorized{
        log.Println("Invalid credentials")
        return
    }else if response.StatusCode != http.StatusOK{
        log.Println("Error authenticating user error code ",response.StatusCode)
        return

    }

    //Create a variable we'll read response.body (from auth service ) into
    var jsonFromAuthService jsonResponse
    //Decode the json from the auth service
    err=json.NewDecoder(response.Body).Decode(&jsonFromAuthService)
    if err!=nil{
        log.Printf("Error decoding json from auth service: , %s",err)
        return

    }
    var payload =jsonResponse{Error: false,Message: "User Authenticated",Data:jsonFromAuthService.Data}
    json.Marshal(payload)

}

Postman 给了我状态码200 ok（我知道这意味着请求已经成功发送），但是我想从我的验证服务得到响应，这将是400无效的密码或电子邮件。我如何修改上面的代码从我的验证服务返回状态码，而不是 Postman 的状态码，同时仍然使用 Postman 作为客户端？

postman

来源：https://stackoverflow.com/questions/75752690/testing-golang-microservices-with-postman

1条答案

按热度按时间

3j86kqsm1#

您没有发回任何状态代码;所以，当你的代码执行完毕时，它会返回一个200响应，这就是你在Postman中看到的。如果你想在代码的不同点发送其他响应代码，你可以使用w.WriteHeader并发送适用的响应代码。

func Authenticate(w http.ResponseWriter,  a AuthPayload){
    jsonData,_:=json.Marshal(a)
    log.Printf("got jsonm data as %s",jsonData)

    request,err := http.NewRequest("POST", "http://authentication-service:8081/authenticateuser",bytes.NewBuffer(jsonData))
    if err!=nil {
        log.Printf("Broker service couldnt connect to the auth service, %s",err)
        w.WriteHeader(http.StatusInternalServerError)
        return
    }

    client:=&http.Client{}
    response, err := client.Do(request)
    if err!=nil{
        log.Printf("Broker service client error: , %s",err)
        w.WriteHeader(http.StatusInternalServerError)
        return

    }
    defer response.Body.Close()

    if response.StatusCode == http.StatusUnauthorized{
        log.Println("Invalid credentials")
        w.WriteHeader(http.StatusUnauthorized)
        return
    }
    if response.StatusCode != http.StatusOK{
        log.Println("Error authenticating user error code ",response.StatusCode)
        w.WriteHeader(response.StatusCode)
        return
    }

    var jsonFromAuthService jsonResponse
    err=json.NewDecoder(response.Body).Decode(&jsonFromAuthService)
    if err!=nil{
        log.Printf("Error decoding json from auth service: , %s",err)
        w.WriteHeader(response.StatusInternalServerError)
        return

    }
    var payload =jsonResponse{Error: false,Message: "User Authenticated",Data:jsonFromAuthService.Data}
    json.Marshal(payload)
}

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使用POSTMAN测试Golang微服务

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