用戶端和服務端的http資訊傳遞,采用json幾乎成了标配。json格式簡單,易于處理,不過由于沒有格式規定,無法校驗。
好在php有json-schema子產品,可以用來驗證json是否符合規定的格式。
安裝使用composer
composer require justinrainbow/json-schema:~1.3
建立一個schema檔案,如:schema.json
{
"type": "object",
"properties": {
"firstName": {
"type": "string",
"required": true
},
"lastName": {
"type": "string"
},
"age": {
"type": "integer",
"minimum": 0
},
"data":{
"type":"object",
"required":true,
"properties":{
}
}
}
}
可以在字段裡嵌套子結構,如果properties為空,則可以任意,比如上例的data。
類型有:
array
A JSON array.
boolean
A JSON boolean.
integer
A JSON number without a fraction or exponent part.
number
Any JSON number. Number includes integer.
null
The JSON null value.
object
A JSON object.
string
A JSON string.
php代碼如下:
$json = '{"firstName":"ban", "lastName":"shan","age":1,"data":{"hobby":"coding"} }';
$validator = new JsonSchema\Validator;
$schema = file_get_contents("schema.json");
$validator->check(json_decode($json), json_decode($schema));
if ($validator->isValid()) {
echo "The supplied JSON validates against the schema.\n";
} else {
echo "JSON does not validate. Violations:\n";
foreach ($validator->getErrors() as $error) {
echo sprintf("[%s] %s\n", $error['property'], $error['message']);
}
}
這樣先定義好通信的schema,在json發送給用戶端之前校驗是否和約定相同,避免不必要的錯誤
(責任編輯:最模闆)