json schema校验

工作中使用到了json schema格式校验的问题，在网上查了些资料，结合自己的理解记录一下。

json schema可以对json结果字符串做出一些约束，例如：

1. 值类型是：array, object, number, string等等

2.值类型必须是枚举中的一个

3. 字符串的长度限制

4. 对字符串判断是否符合正则表达式

5. array元素个数

6. object对象必要属性

测试schema文件

 {
     "$schema": "http://json-schema.org/draft-04/schema#",
     "title": "Product set",
     "type": "array",
     "items": {
         "title": "Product",
         "type": "object",
         "properties": {
             "name": {
                 "type": "string"
             },
             "price": {
                 "type": "number",
                 "minimum": 0,
                 "maximum":30,
                 "exclusiveMinimum": true
             },
             "tags": {
                 "type": "array",
                 "items": {
                     "type": "string",
                     "minLength":10,
                     "maxLength":1024,
                     "pattern":"http://.*"
                 },
                 "minItems": 2,
                 "uniqueItems": true
             },
             "city":{
               "type":"string",
               "enum" : ["bj", "sh", "hk"]
             }
         },
         "required": ["name", "price"]
     }
 }

测试json

 [
   {
     "name":"san",
     "price":29,
     "tags":["http://sdtr/sdg", "http://qwewret/qsdf"],
     "city":"bj"
   },
   {
     "name":"dong",
     "price":30,
     "tags":["http://test", "http://sina"],
     "city":"hk"
   },
 ]

参考:

http://blog.csdn.net/Miss_Ashelley/article/details/53285762

http://www.jsonschemavalidator.net/

http://json-schema.org/