我正在尝试扩展AWS S3 Bucket类型以包含其他格式并将其编组为JSON,但编组将不会获取其他字段
这就是我所拥有的
// AWS has this struct already
type Bucket struct {
// Date the bucket was created.
CreationDate *time.Time `type:"timestamp"
timestampFormat:"iso8601"`
// The name of the bucket.
Name *string `type:"string"`
// contains filtered or unexported fields
}
// Extended struct
type AWSS3Bucket struct {
s3.Bucket
location string
}
somefunc()
{
var region string = "us-west-1"
aws_s3_bucket := AWSS3Bucket{Bucket:*bucket, location:region}
jsonString, err := json.Marshal(&aws_s3_bucket)
fmt.Printf("%s\n", jsonString)
}
我得到的只是Bucket的编码。例如,我的输出总是这样,没有包含区域
{"CreationDate":"2016-10-17T22:33:14Z","Name":"test-bucket"}
为什么区域没有被编组到json缓冲区中的任何想法?
答案 0 :(得分:4)
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location
字段未导出(即不以大写字母开头),因此AWSS3Bucket
包无法使用反射找到它。如果您导出该字段:
json
然后它会显示在type AWSS3Bucket struct {
s3.Bucket
Location string
}
中。如果您希望它在JSON中显示为jsonString
,则将其标记为:
"location":...