How to Handle JSON Keys with Spaces in Go?

Unmarshalling JSON with Key Names Containing Spaces

In the JSON deserialization process, you may encounter difficulties when dealing with JSON data that includes key names with spaces. This issue arises when utilizing the standard encoding/json library in Go. The library struggles to interpret keys with spaces while attempting to map JSON fields to struct fields.

To resolve this issue, ensure that the JSON tag specification is correct. The json tag maps JSON field names to struct field names. When a space character appears in the JSON tag specification after the colon but before the quotation mark, the library is unable to properly map the JSON field to the struct field.

Consider the following example code:

type Animal struct {
    Name  string `json:"Na me"`
    Order string `json:"Order,omitempty"`
}

In this example, the JSON tag for the "Name" field is incorrectly specified with a space after the colon. To resolve the issue, remove the space and specify the tag as follows:

type Animal struct {
    Name  string `json:"Name"`
    Order string `json:"Order,omitempty"`
}

With this modification, the JSON library can successfully map the JSON field names to the struct field names, even if the field names contain spaces. This ensures that the struct fields are appropriately populated with values from the JSON data.

The above is the detailed content of How to Handle JSON Keys with Spaces in Go?. For more information, please follow other related articles on the PHP Chinese website!