本文介绍了如何通过Go语言中的url获取JSON对象?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我开始学习Golang，我想知道如何通过调用url来获取json响应，如果您能给我一个例子，那么对自己进行指导非常有用.

I'm starting to learn Golang and I would like to know how to get a json response by calling an url, if you could give me an example it would be great in order to guide myself.

推荐答案

我会写一个辅助函数来实现它:

I'd write a little helper function to do it:

// getJSON fetches the contents of the given URL // and decodes it as JSON into the given result, // which should be a pointer to the expected data. func getJSON(url string, result interface{}) error { resp, err := http.Get(url) if err != nil { return fmt.Errorf("cannot fetch URL %q: %v", url, err) } defer resp.Body.Close() if resp.StatusCode != http.StatusOK { return fmt.Errorf("unexpected http GET status: %s", resp.Status) } // We could check the resulting content type // here if desired. err := json.NewDecoder(resp.Body).Decode(result) if err != nil { return fmt.Errorf("cannot decode JSON: %v", err) } return nil }

可以在此处找到完整的工作示例: play.golang/p/b1WJb7MbQV

A full working example can be found here: play.golang/p/b1WJb7MbQV

请注意，检查状态码和Get错误非常重要，并且必须明确关闭响应正文(请参见此处的文档: golang/pkg/net/http/#Get )

Note that it is important to check the status code as well as the Get error, and the response body must be closed explicitly (see the documentation here: golang/pkg/net/http/#Get)