Go

JSON: Array of Objects

See more JSON Examples

Here we have a JSON object that contains an array, where each element in the array is a JSON object. This example demonstrates how to access the objects contained within an array.

{ 
  "employees":[
    {"firstName":"John", "lastName":"Doe"},
    {"firstName":"Anna", "lastName":"Smith"},
    {"firstName":"Peter","lastName":"Jones"}
  ]
}

Go

    success := false

    json := chilkat.NewJsonObject()

    // This is the above JSON with whitespace chars removed (SPACE, TAB, CR, and LF chars).
    // The presence of whitespace chars for pretty-printing makes no difference to the Load
    // method. 
    jsonStr := "{\"employees\":[{\"firstName\":\"John\", \"lastName\":\"Doe\"},{\"firstName\":\"Anna\", \"lastName\":\"Smith\"},{\"firstName\":\"Peter\",\"lastName\":\"Jones\"}]}"

    success = json.Load(jsonStr)
    if success != true {
        fmt.Println(json.LastErrorText())
        json.DisposeJsonObject()
        return
    }

    // Get the "employees" array.
    employees := json.ArrayOf("employees")
    if json.LastMethodSuccess() == false {
        fmt.Println("employees member not found.")
        json.DisposeJsonObject()
        return
    }

    // Iterate over each employee, getting the JSON object at each index.
    numEmployees := employees.Size()
    i := 0
    for i < numEmployees {

        empObj := employees.ObjectAt(i)

        fmt.Println("employee[", i, "] = ", *empObj.StringOf("firstName"), " ", *empObj.StringOf("lastName"))
        empObj.DisposeJsonObject()

        i = i + 1
    }

    employees.DisposeJsonArray()

    json.DisposeJsonObject()