如何通过POST发送参数

Question

resource receives the parameters

example: http://example.com/show-data?json={"fob":"bar"}

in case of GET request, all clear and work well.

urlStr := "http://87.236.22.7:1488/test/show-data"
json := `"foo":"bar"`
r, _ := http.Get(urlStr+`?json=`+json)
println(r.Status)


200 OK

But how it shoud be done when use POST request?

i try

 urlStr := "http://87.236.22.7:1488/test/show-data"
    json := `{"foo":"bar"}`
    form := url.Values{}
    form.Set("json", json)

    println(form.Encode())
    post, _ := http.PostForm(urlStr, form)

    println(post.Status)



400 Bad Request 

json parameter is missing

but it`s not work.

Answer 1

There are a bunch of ways to POST stuff, but you probably want to use PostForm: https://golang.org/pkg/net/http/#PostForm

You'll need to set up a Values object first then pass it right in. See the example code in the docs: https://golang.org/pkg/net/url/#Values

Once you've jammed the json into a Values object, just call PostForm() to fire it up.

Edit: This works assuming that the receiving end is wanting something encoded as application/x-www-form-urlencoded. I'm putting in a second answer if the receiving end is expecting application/json.