英文:
r.PostForm and r.Form always empty
问题
我有一个非常奇怪的问题，要么是我真的瞎了，要么这是某种错误。我有以下的http.Handler：
func ServeHTTP(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
log.Println("解析表单数据时出错")
return
}
log.Println("打印r.PostForm：")
for key, values := range r.PostForm { // 遍历map
for _, value := range values { // 遍历[]string
log.Println(key, value)
}
}
b, _ := ioutil.ReadAll(r.Body)
s := string(b)
log.Println("打印body：", s)
}
现在，当向绑定到此处理程序的URL发送PUT请求，并使用以下表单数据时：
Name=someName
Version=1.0.0
PLanguage=java
GitRepo=someRepo
这总是输出：
打印r.PostForm：
打印body： Name=someName&Version=1.0.0&PLanguage=java&GitRepo=someRepo
我已经试图找到原因已经有2个小时了，但我完全不知道出了什么问题。没有错误解析表单数据，但r.PostForm映射始终为空（我也尝试了r.Form，结果相同）。所以为了调试，我添加了打印body的部分，只是为了确保里面确实有一些数据 - 而且确实有。我真的很感激任何帮助。提前谢谢！
英文:
I have a very strange problem, and i'm either really blind, or this is some kind of a bug. I have the following http.Handler:
func ServeHTTP(w http.ResponseWriter, r *http.Request) {
err := r.ParseForm()
if err != nil {
log.Println("Error while parsing form data")
return
}
log.Println("Printing r.PostForm:")
for key, values := range r.PostForm { // range over map
for _, value := range values { // range over []string
log.Println(key, value)
}
}
b, _ := ioutil.ReadAll(r.Body)
s := string(b)
log.Println("Printing body: ",s)
}
Now, when sending a PUT-Request to the url binded to this handler with the following FORM-Data:
Name=someName
Version=1.0.0
PLanguage=java
GitRepo=someRepo
This is ALWAYS the output:
Printing r.PostForm:
Printing body: Name=someName&Version=1.0.0&PLanguage=java&GitRepo=someRepo
I've been trying to find the cause for like 2 hours already and i just have no idea what the heck is wrong here. There is no error parsing the Form-Data, but the r.PostForm map is always empty (i also tried r.Form, with same result). So for debugging i added the part where i print the body, just to make sure there actually is some data in there - and it is. I would really appreciate any help here. Thanks in advance!
答案1
得分: 1
你需要设置'Content-Type'头。
如果没有设置头部，根据RFC 2616将使用"application/octet-stream"。
简而言之，这是一种二进制格式，因此你的请求体将不会被解析为Form。
英文:
You need to set the 'Content-Type' header.
If no header is set "application/octet-stream" is used according to RFC 2616.
Long story short that is a binary format so your body will not be parsed into the Form.
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