从Go函数返回整个结构

Question

I have a lengthy struct of json key value pairs returned from a GET function. Similiar to:

type content struct {
field1 string `json:"Language"`
field2  int `json:"Runtime"`
field3 time.Time `json:"StartTime"`
field4 time.Time `json:"EndTime"`
field5 int64 `json:"ProgramId`
field6 string `json:"ProviderId"`
field7 string `json:"Title:`
}

I know how to return a single field value using:

println(content.field1)

but how do I return every field name and value without listing out every element? How would I return something like this?

field1:value

Answer 1

Because the JSON decoder ignores unexported field names, you must export the field names:

type content struct {
  Field1 string `json:"Language"`
  Field2  int `json:"Runtime"`
  Field3 time.Time `json:"StartTime"`
  Field4 time.Time `json:"EndTime"`
  Field5 int64 `json:"ProgramId`
  Field6 string `json:"ProviderId"`
  Field7 string `json:"Title:`
}

To show the fields, print the decoded value content using "%+v":

fmt.Printf("%+v
", content)