英文:
Read until the server closes the connection
问题
我试图从服务器读取一个JSON编码的字节，它将被缩进，但长度不可预测，并且没有明显的终止字节。我想将整个服务器响应读入一个字节中。服务器将关闭连接。是否可以使用net来实现这个？
英文:
I'm trying to read a JSON-encoded byte from a server, which will be indented, but of an unpredictable length, and no obvious termination byte. I would like to read the entire server response into a byte. The server will close the connection. Is it possible to do this using net?
答案1
得分: 4
作为对@minikomi的回答的补充，我想补充一点，如果你确定从服务器返回的字节是JSON编码的，那么有一个很好的包encoding/json可以使用。
http://golang.org/pkg/encoding/json/
如果你正在使用解码器直接从连接中解码，有时错误不会被返回。你可能想使用fmt.Printf("%v\n", whateverDecodedFromTheConnection)来查看连接关闭时解码器对你的结构体得到的内容。
例如，在我的情况下，使用encoding/gob解码器将消息从TCP连接解码为一个定义为：
type MessageType struct {
Type uint8
}
当连接关闭时，decoder.Decode(&buffer)返回{0}。这可能不是一个常见的情况，但需要注意。
英文:
As a supplement to @minikomi 's answer, I would like to add that, if you are sure that the bytes returned from the server are JSON encoded, there's a nice package encoding/json for this.
http://golang.org/pkg/encoding/json/
If you are using a decoder to decode directly from a connection, sometimes the error won't be returned. You might want to use fmt.Printf("%v\n", whateverDecodedFromTheConnection) to see what the decoder gets for your struct when the connection is closed.
For example, in my case, where the encoding/gob decoder is used to decode a message from a tcp connection into a struct defined as:
type MessageType struct {
Type uint8
}
When the connection is closed, decoder.Decode(&buffer) returns {0}. This might not be a common situation, but something needed to be watched out.
答案2
得分: 2
请查看http://golang.org/pkg/net/http/上的文档。
一个http Get将返回一个Response结构体，其中会有一个类型为io.ReadCloser的Body。
然后，您可以使用ioutil.ReadAll将整个响应读取到一个字节数组中。
resp, err := http.Get("http://example.com/")
if err != nil {
// 处理错误
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
英文:
Please have a look at the docs at http://golang.org/pkg/net/http/
An http Get will return a Response struct, which will have a Body of type io.ReadCloser.
You can then use ioutil.ReadAll to read the entire response to a byte array.
resp, err := http.Get("http://example.com/")
if err != nil {
// handle error
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
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