英文:
In Go, why is my JSON decoding not working here?
问题
我无法使标准库的encoding/json包能够解码JSON对象。以下是一个最简示例：
b := []byte(`{"groups":[{"name":"foo"},{"name":"bar"}]}`)
type Group struct{ name string }
var contents struct {
groups []Group
}
err := json.Unmarshal(b, &contents)
fmt.Printf("contents = %+v\nerr = %+v\n", contents, err)
这段代码输出：
contents = {groups:[]}
err = nil
但我期望的输出是：
contents = {groups:[{name:foo} {name:bar}]}
我做错了什么？
英文:
I cannot get the standard library's encoding/json package to work for decoding JSON objects. Here's a minimal example:
b := []byte(`{"groups":[{"name":"foo"},{"name":"bar"}]}`)
type Group struct{ name string }
var contents struct {
groups []Group
}
err := json.Unmarshal(b, &contents)
fmt.Printf("contents = %+v\nerr = %+v\n", contents, err)
This prints:
contents = {groups:[]}
err = nil
But I expect:
contents = {groups:[{name:foo} {name:bar}]}
What am I doing wrong?
答案1
得分: 14
字段名必须以大写字母开头：
type Group struct{ Name string }
var contents struct {
Groups []Group
}
英文:
The field names have to start with a capital letter:
type Group struct{ Name string }
var contents struct {
Groups []Group
}
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