客户端和服务端的http信息传递,采用json几乎成了标配。json格式简单,易于处理,不过由于没有格式规定,无法校验。
好在php有json-schema模块,可以用来验证json是否符合规定的格式。
安装使用composer
composer require justinrainbow/json-schema:~1.3
新建一个schema文件,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":{
}
}
}
}
可以在字段里嵌套子结构,如果properties为空,则可以任意,比如上例的data。
类型有:
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代码如下:
$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']);
}
}
这样先定义好通信的schema,在json发送给客户端之前校验是否和约定相同,避免不必要的错误
(责任编辑:最模板)