JSON Support in Qt
Qt5之后开始提供对处理JSON数据的支持,JSON是一种Interter数据交换的数据格式。
JSON 用于存储结构化的数据,JSON有6种基本数据类型:
bool | double | string | array | object | null |
All keys in an object are strings, and an object cannot contain any duplicate keys.
在JSON的对象中,所有的键都是字符串,且不能包含重复的字符串。
Entries in arrays and objects are separated by commas. The separator between keys and values in an object is a colon (:).
在JSON中,键和值用":"隔开,多个键值对之间用","隔开。
A valid JSON document is either an array or an object, so a document always starts with a square or curly bracket.
有效的JSON文本是一个数组或对象,因此JSON文本总是以方括号或大括号开始。
举例:
{ "FirstName": "John", "LastName": "Doe", "Age": 43, "Address": { "Street": "Downing Street 10", "City": "London", "Country": "Great Britain" }, "Phone numbers": [ "+44 1234567", "+44 2345678" ] } |
Qt中的JSON相关类
QJsonArray | Encapsulates a JSON array | 封装JSON数组 |
QJsonDocument | Way to read and write JSON documents | 读取和写入JSON文本的方式 |
QJsonObject | Encapsulates a JSON object | 封装JSON对象 |
QJsonObject::iterator | QJsonObject::iterator class provides an STL-style non-const iterator for QJsonObject | JSON迭代器 |
QJsonObject::const_iterator | QJsonObject::const_iterator class provides an STL-style const iterator for QJsonObject | JSON const迭代器 |
QJsonParseError | Used to report errors during JSON parsing | 用于报告JSON解析期间的错误 |
QJsonValue | Encapsulates a value in JSON | 封装JSON中的值 |
http://blog.csdn.net/jan5_reyn/article/details/38955721