dosf40815
2014-03-01 00:41
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如何使用Golang的net / http包读取流式响应正文？

我正在尝试连接到一个执行json数据流的端点。我想知道如何使用Go的net/http包执行基本请求，并在响应出现时读取响应？目前，我只能在连接关闭时读取响应。 

resp, err := http.Get("localhost:8080/stream")
if err != nil {
    ...
}
...
// perform work while connected and getting data

任何帮助都将不胜感激！谢谢!

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我正在尝试连接到执行json数据的http流传输的端点。 我想知道如何使用Go的net / http包执行基本请求并读取传入的响应。目前，我只能在连接关闭时读取响应。 

  resp，err：= http.Get（“ localhost：8080 / stream”）
if err！= nil {
 ... 
} 
 ..  。
 //在连接并获取数据的同时执行工作
   
 
 
任何见识将不胜感激！ 
 
 
谢谢！<  / p> 
 
 
 -RC
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2条回答 默认 最新

  • doure8758 2014-03-01 14:23
    已采纳

    The way to do streaming JSON parsing is with a Decoder: 

    json.NewDecoder(resp.Body).Decode(&yourStuff)

    For a streaming API where it's a bunch of objects coming back (a la Twitter), that should stream great with this model and the built-in encoding/json API. But if it's a large response where you have an object that's got a giant array with 10MB of stuff, you probably need to write your own Decoder to pull those inner pieces out and return them. I'm running into that problem with a library I've written.

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  • dtrotfd1012 2014-03-04 16:39

    The answer provided by Eve Freeman is the correct way to read json data. For reading any type of data, you can use the method below:

    resp, err := http.Get("http://localhost:3000/stream")
...

reader := bufio.NewReader(resp.Body)
for {
    line, err := reader.ReadBytes('
')
    ...

    log.Println(string(line))
}
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